Manuel d'utilisation de l'émetteur universel Honeywell XNX

Manuel d’utilisation de l’émetteur universel XNX de Honeywell

Manuel d’utilisation pour les modèles Honeywell incluant : Émetteur universel XNX

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Manuel technique de l’émetteur universel XNX

Manuel technique du transmetteur universel XNX

Transmetteur universel XNX Introduction 5 Sécurité Lire et comprendre ce manuel avant d’installer, d’utiliser ou d’entretenir le transmetteur XNX. Accordez une attention particulière aux points suivants

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DocumentDocument1998M0738 XNX Technical Manual ENG rev12

XNX® Universal Transmitter

Technical Manual · Table of Contents · Safety Information · Introduction · Installation and Operation

· Calibration · Maintenance · Warnings/Faults · Specifications

· Control Drawings · HART® Protocol · Warranty · Index

XNX Universal Transmitter

TOC

Table of Contents

Safety Warnings5 Cautions 7 Notes 7 Information 8
1 Introduction 11 Product Description 10 111 The XNX® Universal Transmitter 10 112 20 mA/HART® Output 11 113 Communications 11 114 Certifications11 115 Patents12 12 Product Overview 12 121 Enclosure12 122 Cover 13 123 POD 14 13 Options 14 131 Local HART 14 132 Relays 14 133 Modbus 15 134 Foundation Fieldbus 15 135 XNX Accessories 15 14 The XNX Front Panel 17 141 Controls and Navigation 18 142 The General Status Screen 19 15 Main Menu 22 151 XNX Menu Map 23
2 Installation and Operation

21 Mounting and Location of Sensors 28 211 Mounting the XNX® Universal Transmitter28
22 Wiring the XNX Transmitter30 221 General Wiring Considerations 30 222 Distance Considerations for Installation31 223 POD Connections 36 224 4-20mA Output, Common Connections, and Power Settings 37 225 Foundation Fieldbus Wiring38 226 Terminal Block Connections38 227 EC Personality Wiring 39 XNX Electrochemical Sensor Installation40 XNX EC Sensor Remote Mounting Kit41 228 mV Personality Wiring43 229 IR Personality Wiring 46 Connecting a Searchpoint Optima Plus or Searchline Excel 46 Connecting Generic mA Devices 47
23 Options 51 231 Local HART Interface51 232 Relays 53 233 Modbus 53 234 Foundation Fieldbus 54
24 Powering the XNX for the First Time55 241 XNX Units Configured for EC, mV, and IR (except Searchline Excel) 55 242 LCD and LED Test 56 243 XNX IR Units Configured for Searchline Excel 56

Table of Contents

XNX Universal Transmitter

Table of Contents

25 Configuring the XNX Universal Transmitter 57 Select Language 57 Set Date & Time 58 Set mV Sensor Type 59 Set mA Sensor Type 60 Range & Alarms67 Latching / Non-Latching69 Set Units 70 mA Levels 70 Calibration Interval71
Accept New Sensor Type 72 Beam Block Options 72
Path Length 74 Unit ID 75 Relay Options 76 Fieldbus Options 77 Configure Security 78 26 Verifying the XNX Configuration 79 261 Test Menu 79 X Inhibit 79 Force mA Output 80 Force Relays 81 Alarm/Fault Simulation 81 262 ? Information Menu83
Alarm/Fault Status 83 Date & Time83 Transmitter Data83

? Transmitter Status 84 Sensor Data 85
? Sensor Status 85 Gas Data85 Range/Alarm Settings85 mA Level Settings86 Fieldbus Settings 86 Relay Data86 ? Event History87
3 Calibration 31 Gas Calibration Menu 90 32 Calibration 90 321 Zero and Span Calibration for XNX EC Sensors, mV Sensors, and Searchpoint Optima 91 322 Calibration Procedure 91 323 Using the Calibration Cup 93 324 Zero and Span Calibration of XNX EC Hydrogen Sulfide (H2S) Sensors94 325 705/705HT Calibrating 94 326 Sensepoint/Sensepoint HT Calibrating 94 327 Calibrating the Searchpoint Optima Plus 94 328 Zero and Span Calibration for MPD Sensors 97 329 MPD Flammable Sensor Operational Life 98 3210 XNX EC Sensor Operational Life98 33 Functional Gas Testing (Bump Testing) 99 34 Calibrate mA Output 100 35 Align Excel (Searchline Excel) 100 36 Soft Reset 101

Table of Contents

XNX Universal Transmitter

Table of Contents

4 Maintenance 41 MPD Sensor Cartridge Replacement 104 42 XNX® EC Sensor Cartridge Replacement 105 421 Replacing with the Same Cartridge Type105 422 Replacing with a Different Cartridge Type106
5 Warnings and Faults 51 Warning Messages 108 52 Fault Messages 113 53 Informational Messages 124
6 Specifications 61 Product Specifications 128 62 Sensor Data130 621 Operating and Storage Conditions for Performance Tested EC Cartridges 130 622 EC Sensor Performance Data, Factory Mutual Verified (see Section 63)131 623 EC Sensor Performance Data, DEKRA EXAM verified (see Section 63)132 624 Other EC Sensors133 625 XNX EC Sensor Cross-sensitivity135 626 XNX MPD Sensor Performance Data 142 627 EN60079-29-1 Performance Approved Gases for mV Sensor Types 143 628 Other Sensor Performance Data 143 63 XNX Certifications by Part Number Series 144 631 Certification Labels 148 64 Product Identification 151 641 XNX Universal Transmitter 151

642 XNX EC Replacement Sensors 152
643 XNX EC Replacement Cells 153
644 Multi Purpose Detector (MPD)154
645 XNX Catalytic Bead and IR Replacement Sensor Cartridges 154
646 Accessories/Spares 155
7 Control Drawings 71 XNX UL/INMETRO 159 72 XNX UL/CSA/FM 162 73 Remote Sensor Mount 164
Appendix A - HART® Protocol
A1 HART® Interface 168
ATEX Conditions for Safe Use of Intrinsically Safe HART Handheld Devices 168 A11 HART Sink, Source, and Isolated Wiring169 A12 DevComm PC-based HART Interface 172
Overview 172 Functions 173 A13 Handheld Online Menu176
Appendix B - Modbus® Protocol B1 Modbus and the XNX transmitter 183 B2 Modbus Registers 185
Appendix C - Warranty Warranty Statement 191
Index 192

Table of Contents

XNX Universal Transmitter

Table of Contents

XNX Universal Transmitter
Safety
Read and understand this manual before installing, operating, or maintaining the XNX Transmitter. Pay particular attention to the warnings and cautions below. All of the warnings and cautions shown here are repeated in the appropriate sections of the manual.
Warnings: Identify hazardous or unsafe practices which could result in severe injury or death.
Warnings
· Installation must be in accordance with the recognized standards of the appropriate authority in the country concerned.
· Access to the interior of the sensor, when carrying out any work, must only be conducted by trained personnel.
· Before carrying out any work ensure local regulations and site procedures are followed. Appropriate standards must be followed to maintain the overall certification of the sensor.
· To reduce risk of ignition of hazardous atmospheres, conduit runs must have a seal fitting connected within 18 inches (45 cm) of the enclosure.
· To reduce the risk of ignition of hazardous atmosphere, disconnect the equipment from the supply circuit before opening the sensor enclosure. Keep assembly tightly closed during operation.
· Never open the XNX enclosure under power unless the area is known to be non hazardous.

· The sensor must be earthed/grounded for Intrinsic Safety, electrical safety and to limit the effects of radio frequency interference. Earth/ ground points are provided inside and outside the unit. EMI note for applications using shielded cable: Cable shield terminations must be made at the cable glands with suitable EMI type glands. Avoid terminating cable shields at the Earth ground lug inside the XNX enclosure. In cases where wiring is in pipe, a shielded cable is not required. The external terminal is only a supplemental bonding connection where local authorities permit or require such a connection.
· Take care when handling EC sensor cells as they may contain corrosive solutions.
· Do not tamper or in any way disassemble the sensor cells.
· Do not expose to temperatures outside the recommended range.
· Do not expose the sensor to organic solvents or flammable liquids.
· At the end of their working lives, sensors must be disposed of in an environmentally safe manner, in accordance with local waste management requirements and environmental legislation. Do NOT incinerate sensors as they may emit toxic fumes.
· High off-scale readings may indicate an explosive concentration of gas.
· Verify all outputs, including display, after installation, after service events, and periodically to ensure the safety and integrity of the system.
· Do not use the XNX Universal Transmitter in oxygen-enriched atmospheres. Concentrations displayed will be adversely affected by oxygen depletion.
· After changing parameters with a handheld device, verify that the parameter settings are correct at the transmitter.
· The factory-set passcodes must be reset to prevent unauthorized access to
the transmitter's menus.

Introduction

XNX Universal Transmitter
· When the transmitter is equipped with the optional Remote Mount Kit, the remote sensor must be securely mounted in a fixed position. The Remote Sensor kit is not intended to be used as a hand-held sensor.
· Enclosures of remotely mounted sensors contain aluminum. Be careful to avoid ignition hazards due to impact or friction when installed in Zone 1 locations.
· Install the junction box according to local codes and manufacturer's requirements.
· The enclosures of remotely mounted 705HT sensors contain aluminum. Be careful to avoid ignition hazards due to impact or friction when installed in Zone 1 locations.
· Power off the transmitter before changing S3 or S4. Both switches must be set in either Source or Sink prior to applying power.
· Minimum and maximum controller alarm levels should not be set at less than 10% or greater than 90% of the full scale range of the sensor. Limits are 60% LEL or 0.6mg/m3 for agency performance certification.
· When configuring or communicating with the transmitter using the front panel displays, resume monitoring by exiting all menus and returning to the General Status menu manually. No time outs are invoked.
· When selecting a new target gas for units with a Searchpoint Optima Plus, the sensor must be recalibrated.
· XNX Universal Transmitters carrying UL/CSA/FM approvals that are configured for devices measuring %LEL will not allow adjustments to the full scale value. The range is fixed at 100%.
· There is a potential loss of sensitivity during exposure to high concentrations of H2S. Under these conditions, set the control unit to latch at overrange. In standalone configuration, set alarms to latching. When resetting the overrange or alarm, verify correct operation of the transmitter.
Introduction

· Keep the passwords in a secure area to prevent unauthorized access to the transmitter. If the passwords are lost, resetting the XNX transmitter will require a service technician.
· When the XNX transmitter is placed in Inhibit Mode, alarms are silenced. This will prevent an actual gas event from being reported. Inhibit Mode must be limited to testing and maintenance only. Exit Inhibit Mode after testing or maintenance activities.
· Honeywell recommends periodic bump tests (every 30 days or in accordance with customer site procedures) to the sensor to insure proper operation and compliance with the functional safety rating of the installation.
· As some test gases are hazardous, exhaust the flow housing outlet to a safe area. Do not use the XNX Universal Transmitter in oxygen-enriched atmospheres. (In oxygen-enriched atmospheres, the electrical safety is not given.)
· Exposure to desensitizing or contaminating substances or concentrations causing operation of any alarm may affect sensor sensitivity. Following such events, it is recommended to verify sensor performance by performing a functional gas test (bump test).
· When servicing or replacing sensors, reduce the risk of ignition of hazardous atmosphere by declassifying the area or disconnecting the equipment from the supply circuit before opening the sensor enclosure. Keep the assembly tightly closed during operation.
· Take appropriate precautions when using toxic, flammable, and pressurized cylinders.
· Delays resulting from transmission errors between sensor and transmitter extend response times T90 by more than one-third. The period until fault indication is 10 seconds.
· The HART interface is subject of this EC-type examination certificate only for the purpose of configuration and maintenance.
6

XNX Universal Transmitter
· The options "Modbus interface" and "Foundation Fieldbus interface" are not subject of this EC-type examination certificate.
· Long-term exposure (> 20 minutes) to concentrations exceeding the fullscale range of the H2S sensor type 2 can cause it to lose sensitivity. The measured value may decrease even though high levels of toxic gas are still present. If such conditions can occur, set the control unit to latch at overrange. In standalone operation, set alarms to latching. When resetting the overrange or alarm, verify correct operation of the transmitter.
Hazardous Location Installation Requirements (UL/CSA)
· To reduce risk of ignition of hazardous atmospheres, conduit runs must have a pour gland installed within 18 inches (457mm) of enclosure.
· All ¾ inch NPT conduit, stopping plugs and adapters must be installed with 5¼ threads (minimum) engaged to maintain Explosion Proof rating.
· Stopping Plugs supplied (Honeywell Part Number 1226-0258) are approved for use ONLY with the XNX Universal Transmitter.
· For units fitted with the Optional Relay Module: Relay Contact Ratings are 250 VAC 5A, 24 VDC 5A Resistive Loads Only.
· Terminal block screws should be tightened to 4.5 lb/in (max). · Reference XNX Control Drawing 1226E0402 or 1226E0454 for
additional information regarding IS function (Local HART and EC Personality).
Hazardous Location Installation Requirements (ATEX)
· Read and understand this manual prior to installation and use. · Use only certified M25 cable glands for installation. · Shielded armored cable is required for CE compliance.

· Special Conditions for Safe Use
· The following applies to the HART Barrier intrinsically safe circuits: For installations in which both the Ci and Li of the intrinsically safe apparatus exceeds 1% of the Co and Lo parameters of the associated apparatus (excluding the cable), then 50% of Co and Lo parameters are applicable and shall not be exceeded, i.e. the Ci of the device plus the C of the cable must be less than or equal to 50% of the Co of the associated apparatus, and the Li of the device plus the L of the cable must be less than or equal to 50% of the Lo of the associated apparatus.
· For circuits connected to the EC barrier in which the capacitance and inductance exceed 1% of the permitted values, then the maximum permitted capacitance is limited to 600nF for group IIC and 1uF for group IIIC.
· The connection to the HART circuit shall be rated a minimum of IP 6X.
Cautions
Cautions: Identify hazardous or unsafe practices which could result in damage to property or to the product.

Notes

Notes: Additional useful information.

Introduction

XNX Universal Transmitter
Information
Honeywell Analytics assumes no responsibility for equipment that is not installed and used following the procedures in the Technical Manual.
The reader of this manual should ensure that the appropriate equipment has been installed. If in doubt, contact Honeywell Analytics.
Every effort has been made to ensure the accuracy of our documents, however, Honeywell Analytics can assume no responsibility for any errors or omissions in its documents or their consequences. Honeywell Analytics greatly appreciates being informed of any errors or omissions that may be found in the contents of any of its documents. For information not covered in this document, or if there is a requirement to send comments/corrections about this document, please contact Honeywell Analytics using the contact details given on the back cover of this document.
Honeywell Analytics reserves the right to change or revise the information supplied in this document without notice and without obligation to notify any person or organization of such revision or change. If information is required that does not appear in this document, contact the local distributor/agent or Honeywell Analytics.
XNX® is a registered trademark of Honeywell International.
HART® is a registered trademark of the HART Communication Foundation.
Modbus® is a registered trademark of Schneider Automation Inc.
FOUNDATIONTM is a trademark of Fieldbus Foundation.

Introduction

XNX Universal Transmitter
1 Introduction

XNX Universal Transmitter Technical Manual

XNX Universal Transmitter

1.1 Product Description
1.1.1 The XNX® Universal Transmitter
The XNX Universal Transmitter is a comprehensive gas detection system designed to operate in hazardous locations1 and utilize multiple sensor technologies, catalytic bead, electrochemical (EC), or infrared (IR) to detect toxic gases, flammable gases, and oxygen depletion gas hazards. Each technology has a dedicated personality board.

communication board. There are three types of boards: relay, Modbus®, or FoundationTM Fieldbus. See Section 1.1. 2 Communications for additional information.
XNX Universal Transmitter
Searchline Excel

Catalytic bead technology is used with the XNX mV personality board. Catalytic bead sensors respond to a wide variety of combustibles so are typically used for flammable gas detection.

Searchpoint Optima Plus

Electrochemical technology is used with the XNX electrochemical board. EC sensors measure toxic gases in low concentrations. The XNX EC sensors employ the patented ReflexTM cell fault diagnosis routine. ReflexTM checks for cell presence, cell dry-out, and cell open or short circuit. ReflexTM is automatically initiated by the transmitter at eight-hour intervals. It is also initiated on power up or sensor exchange. In the event of a cell failing this test, a sensor fault code is displayed. ReflexTM diagnostics occur in the first minutes of the power up sequence.

CL2 ClO2 CO

H2 H2S HF

NH3 NO NO2

O2 PH3 SO2

705 705HT
Sensepoint Sensepoint HT

Multi-Purpose Detector (MPD) Catalytic Bead Infrared Flammable Infrared Methane/CO2

Infrared technology is used with the XNX IR board. IR sensors optically absorb gases that fall into the infrared spectrum.
For additional information about any of the three sensor types, refer to the applicable data sheet for the supported sensor in Figure 1.
The XNX Universal Transmitter also allows for an optional

Personality

Sensor Type

Supported Sensors

Point and Open-Path Infrared Searchpoint Optima Plus, Searchline Excel

mV Flammable and Toxic

XNX EC
.

Toxic and O2 Sensing

705, 705HT, Sensepoint, Sensepoint HT, MPD (Catalytic Bead Flammable, IR Flammable and IR CO2) Electrochemical sensors, with Hot Swap, pre-calibrated through Intrinsically Safe (IS) barrier

1There are three main types of gas hazards: flammable, toxic, and asphyxiant. A flammable gas hazard is one in which there is a risk of fire and/or explosion (e.g., a situation in which a gas such as methane, butane, or propane is present). A toxic gas hazard is one in which there is a risk of poisoning (e.g., a gas such as carbon monoxide, hydrogen sulfide, or chlorine is present). An asphyxiant hazard would include a risk of suffocation through oxygen deficiency. (Oxygen can be consumed or displaced by another gas.)

Figure 1. XNX Universal Transmitter and supported sensing technologies
The XNX Universal Transmitter relies on 4-20mA output, refreshed at least every two seconds (once per second is typical), in which the output is proportional to the gas concentration.

Section 1 - Introduction

XNX Universal Transmitter
1.1.2 20 mA/HART® Output
All XNX Transmitters provide a 20mA Current Loop with HART
Source (3-Wire) or Isolated (4-Wire) electrical interface based on installation requirements. The 20mA current loop output provides an analog indication of special states, a proportional output to gas concentration and over range indication per the table below. In the event of a simultaneous alarm and fault, an alarm condition will always override a warning state.

The transmitter uses HART over 4-20mA as the standard communications protocol. Additional optional communication interfaces are available: relay communication, Modbus, or Foundation Fieldbus. Each communication option has a dedicated option board. For additional information, refer to Section 1.3 Options.
1.1.4
installation in Class I, Division 1, Groups A, B, C and D Hazardous Locations. FM Approvals evaluation includes Class I, Zone

Output

Description*

Notes

1.0 mA
2.0 mA
3.0 mA 4-20 mA 21 mA

Fault
Warm-up Inhibit
Bump Test Calibration
Warning
Gas Concentration
Over Range

Special State Indication

*Alarm conditions always take priority over faults and warnings.

HART Protocol provides digital communications with the XNX

Diagnostics. (See Appendix A HART Protocol for additional information)

1.1.3 Communications
The XNX Universal Transmitter is registered with the HART Communication Foundation.
Section 1 - Introduction

not cover daisy-chained XNX combustible gas transmitters, the use of HART, Modbus, or Foundation Fieldbus protocols for combustible gas performance. HART, Modbus, or Foundation Fieldbus protocols can be used only for data collection or record keeping with regards to combustible gas. The EC cartridge2 and
standards.
European Community ATEX Directive and the prescribed protection methods for installation in Potentially Explosive Atmospheres. XNX-BT**.***** and XNX-UT**.***** versions are UL classified and INMETRO approved (TÜV Rhineland) for compliance with both U.S. and Brazilian standards. See Section 6.2 for additional information on applicable approvals by part number and Section 6.2.1 for marking.
2"Cartridge" and "sensor" are used interchangeably in this document.
11

XNX Universal Transmitter

1.1.5 Patents
This table shows details about XNX-related patents.

Patents Applicable to the XNX Universal Transmitter

Patent Number 6,123,818 6,251,232 6,351,982 6,395,230 7,225,661 7,716,962

Description
Reflex patent Reflex patent Flammable sensor housing Pellistor Gas calibration adapter Method of gas calibration

Application
Implemented in XNX Implemented in XNX XNX accepts this sensor Sensor used in XNX Applicable to XNX Used to calibrate XNX ECC cartridges

1.2 Product Overview
The XNX transmitter is comprised of the main parts shown below.
Cover
Pod
Intrinsically Safe (IS) Barrier for Optional Local HART Interface
Intrinsically Safe (IS) Barrier for Electrochemical Sensor Interface (when equipped)
Enclosure
Figure 2. XNX Exploded View
A complete description of XNX accessories can be found in publication 1998-0807 XNX Universal Transmitter Parts List. Section 1 - Introduction

1.2.1 Enclosure
Available in either Stainless Steel or Aluminum, with 3/4" NPT (UL/CSA or UL/ INMETRO) or M25 (ATEX/IECEx only) threaded cable/conduit ports, the XNX Universal Transmitter enclosure is explosion-proof and suitable for use in -40°F to +149°F (-40°C to +65°C) operating conditions. A 5-coat marine finishing process provides the highest degree of corrosion protection. For more information on performance specifications, see Section 6 Specifications. The XNX enclosure is equipped with five threaded cable/conduit ports providing functional and flexible configurations based on sensor and option choices. See Figure 5 for cable/conduit port assignments and restrictions. Stopping plugs (HA PN# 1226-0257 or 1226-0258) have been provided to seal unused cable/conduit ports and have been Agency evaluated/approved for use with the XNX enclosure only. The number of stopping plugs varies among available configurations.
Caution: The stopping plugs are for use only with the XNX Transmitter and should not be used with any other device.
Mounting lugs integral to the XNX enclosure allow easy installation on a flat surface or 2"-6" (50-150mm) diameter pipe with the optional Pipe Mount Kit or Ceiling Mount Bracket Kit.
12

XNX Universal Transmitter
1.2.2 Cover
The transmitter cover is supplied in the identical material specified for the enclosure.
Cover Tempered Glass Window
Cover Lock Screw, requires a 2mm hex key (included) Figure 3. XNX components
A tempered glass window requires the use of the supplied magnetic wand/screwdriver to activate the four user interface switches that are located on the front of the display module. This allows for nonintrusive setup and operation. A locking screw integrated into the cover provides positive locking that can be removed by using the supplied 2mm hex key3.
Figure 4. Magnetic Wand/Screwdriver
Note: When attaching the cover or stopping plugs, coat the threads to prevent corrosion.

While relay wiring can use any available cable/conduit port in the XNX enclosure, do not use the same cable/conduit port for both relay reset and relay signal lines to
avoid electrical noise.

Option Local HART Option XNX Electrochemical Sensor - Local/Remote MPD, 705 Series, Sensepoint Series Searchpoint Optima Plus Searchline Excel Remote Sensor Connection (except EC ) Searchpoint Optima Plus - Remote Modbus Relays Power

Position B C C
A or E Typically C Any remaining Any remaining Any remaining Any remaining Any remaining

Figure 5. XNX Universal Transmitter Cable/Conduit Port Assignments

3See the XNX Universal Transmitter Parts List (document 1998-0807) for a description of all of the parts that are shipped with the transmitter.

Section 1 - Introduction

XNX Universal Transmitter

1.2.3 POD
The POD (Personality, Options, and Display) encloses circuit boards for the personality module, optional interfaces, and display.
The personality module, or circuit board, determines the transmitter behavior based on the sensor type attached to the transmitter (electrochemical cell, catalytic bead sensor, or infrared) and provides the necessary interface. Connection to the attached sensor is made through the sensor connector accessed via a slot in the POD housing.
The optional communication boards vary depending on the option selected when ordered. Only one of the three available interface options (relays, Modbus, or Foundation Fieldbus) can be attached to the XNX transmitter.

1.3 Options
1.3.1 Local HART
Available with any sensor technology or personality, an external access to the HART interface in the XNX transmitter is provided. An intrinsically safe (IS) barrier inside the transmitter gives the user full control using a hand-held interrogator for programming and configuration. The external interface is installed in the lower left cable/conduit port of the transmitter and is intrinsically safe. For more information, see Appendix A - HART Protocol.

Figure 6. POD, exploded View
Section 1 - Introduction

Figure 7. XNX Universal Transmitter with HART Interface IS Barrier
1.3.2 Relays
The relay option (XNX-Relay) provides 3 form "C" (SPDT) normally open/normally closed (NO/NC) contacts for alarm and fault indication. A remote reset input is provided (TB4). Momentarily closing the the circuit between the pins of TB4 performs the same function as the Reset Alarms & Faults command. The XNX transmitter has three relays: relay 1 is for alarm level 1, relay 2 is for alarm level 2, and relay 3 is for faults and special
14

XNX Universal Transmitter
states. Two alarm levels can be set, allowing, for example, a level 1 alarm for the immediate area when a certain gas concentration is detected and a plant-wide level 2 alarm when a greater gas concentration is detected.
The maximum refresh rate of the relays is 2 seconds. See Set Alarm Values for more information.

1.3.5 XNX Accessories
Pipe Mount Kit
The Pipe Mount kit (1226A0358) allows the XNX to be mounted to pipe from 2"-6" (50-150mm) in diameter. The kit includes the pipe mount bracket, two carriage bolts, nuts, and lock washers.

1.3.3 Modbus
The optional Modbus interface allows the XNX to connect to a bus of devices and transmit data to PLCs or controllers. (For more information, see the Modbus Protocol Manual). Connections to the XNX are made through a pluggable terminal block on the Modbus interface circuit board. Modbus RTU protocol uses ASCII/Hex protocols for communication.

Note: POD options are either relay, Modbus, or Foundation Fieldbus.
1.3.4 Foundation Fieldbus
Foundation Fieldbus is a digital communication system which supports several types of messages. Unlike many traditional systems which require a set of wires for each device, multiple Foundation Fieldbus devices can be connected with a single set of wires. Foundation Fieldbus overcomes some of the disadvantages of proprietary networks by providing a standardized network for connecting systems and devices.

Figure 8. Pipe-mounted XNX Transmitters
Calibration Gas Flow Adapter
The calibration gas flow adapter is used to apply calibration test gas to the sensor. It attaches to the bottom of the sensor and can be fitted without removing the weatherproof cover. See Section 3 - Calibration for further details on gas calibration.

Sensor XNX EC MPD Sensepoint
705

Flow Adapter P/N S3KCAL
1226A0411 02000-A-1645 00780-A-0035

Section 1 - Introduction

XNX Universal Transmitter

Weatherproof Cap

The weatherproof cap protects XNX sensors from harsh weather.

Sensor XNX EC

Weatherproof Cap P/N Included

MPD

02000A1640

Sensepoint

02000-A-1640

705

00780-A-2076

MPD-*TCB1 SPXCDWP (included)

Remote Sensor Mounting Kit for XNX EC Sensors
The remote sensor mounting kit (S3KRMK) allows XNX EC sensors to be remotely mounted via an IS cable kit, up to 50 feet (15 meters) from the transmitter. The kit includes 50 feet of shielded cable, cable glands, and remote terminal box. The cable can be cut to the required length then terminated at the remote terminal box.

Ceiling Mount Bracket Kit
The optional Ceiling Mount Bracket Kit (1226A0355) allows the XNX Transmitter to be mounted to the ceiling. The kit includes two stainless steel ceiling mount brackets, bolts,
and nuts.

Remote Gassing Kit

The Remote Gassing Kit (1226A0354) enables gas to be
applied remotely for performing functional response checks (bump tests). The kit Includes: 50' Teflon® tubing, a mounting bracket, a tube cap, and device adapters in 1/4" and 1/8" (6.3 mm and 3.2 mm) ID to
attach to bump test ports on the
weatherproof cap of the device.

Collecting Cone
The collecting cone improves detection of lighter-than-air gases such as hydrogen and methane.

Sensor Collecting Cone P/N

XNX EC MPD Sensepoint 705

S3KCC 02000-A-1642 02000-A-1642 02000-A-1642

Duct Mount Kit

The duct mounting kit (S3KDMK) can

be used with the EC sensor to allow

detection

O, 2

CO,

H 2

and

H2S

gases

in ducts. When combined with the

1226A0382 MPD Adapter Ring

MPD Interface Adapter (1226A0382),

S3KDMK EC/MPD Duct Adapter Kit

the duct mounting kit can

accommodate the MPD to detect flammable gases in a duct

application. The duct mount kit includes the adapter, gasket and

required fasteners. The MPD Interface Adapter includes only the

adapter and requires the S3KDMK duct mount kit.

Section 1 - Introduction

XNX Universal Transmitter
Weather Protector The Extreme Weather Protector (SPXCDWP) is designed to protect the sensor from environmental conditions in outdoor exposure applications.

1.4 The XNX Front Panel
The XNX Transmitter uses magnetic switches to enable nonintrusive operation. To activate a magnetic switch, hold the magnetic end of the screwdriver up to the glass window and slowly swipe the magnet directly over the shaded area.
For best results, hold the screwdriver as illustrated in Figure 9.

Enter/Accept

Switch Actuation Visual Indicator

Escape/Back

Section 1 - Introduction

Move Right/Increment Value

Move Left/Decrement Value

Figure 9. Using the magnetic wand
A decal illustrating the proper method for actuating the magnetic switches is placed on the POD of each transmitter.

XNX Universal Transmitter

Wand Instruction Decal

Power LED (green)

Fault LED (yellow)

Alarm LED (red)

Escape

Enter/Accept

Move Left Decement Value

Switch Actuation Visual Indicator
Move Right Increment Value

Figure 10. Operation decal
The switch is actuated by the flux lines between the poles of the magnet. This actuation method provides the most consistent response. A visual indication of the switch actuation will appear in the lower right corner of the XNX display each time the switch is activated.
In some menus where displayed values can be changed, the magnet must be swiped over the switch to cause the numeral on the display to advance through the available values. Use the switch to return to a previous menu or field.
For the purposes of this manual, the instruction to use , , or , means to activate the relevant magnetic switch as described above.

Figure 11. Front panel display of the XNX transmitter

1.4.1 Controls and Navigation

Command

Description

Enter/Accept

The Enter/Accept switch is used to access menus, accept changes and to answer "yes" to system prompts.

Escape/Back

The Escape/Back switch is used to return to previous menus or to answer "no" to system prompts.

The Left/Decrement arrow is used to move through

Move Left/

menu options or decrement values when entering text

Decrement Value or numbers.

Move Right/ Increment Value

The Right/Increment arrow is used to move through menu options or increment values when entering text or numbers.

Section 1 - Introduction

XNX Universal Transmitter
1.4.2 The General Status Screen

Figure 12. General Status screen4
The General Status Screen shows the status of the XNX Transmitter.

Status Indicator
Current Concentration Level (Bar Graph)

Current Concentration Level (Numeric)
Concentration Units Full Scale
Alarm 2 Set Point Alarm 1 Set Point

Figure 13. General Status screen, normal operating mode

When a warning is triggered, the warning icon appears and information is displayed on the General Status Screen. The information displayed alternates between screens displaying the gas concentration and the warning code. See Section 5 Warnings/Faults for more warning code information.

Warning Icon

Warning Code

Figure 14. General Status Warning detail
If the Fault icon is displayed, a fault condition has been triggered and the display will alternate between the target gas concentration and the fault code. See Section 5 - Warnings/ Faults for more fault code information.

Fault Icon

Fault Code

The Normal Operating Mode icon indicates proper operation. The XNX display also shows the concentration level of the target gas in two ways. In the first, a numeric value is shown in the upper right corner of the display in the units selected (ppm, %LEL, %VOL). The second concentration display is shown in

Figure 15. General Status Fault detail

the form of a bar graph representing the current concentration against full scale and in relation to the defined alarm levels. For more information on setting range and alarm levels, see Section 2.6.2 Range/Alarm Settings. See Section 6.2.2, Section 6.2.3, and Section 6.2.4 for negative drift and zero deviation values.

In the event of multiple warnings or faults, the user can view all messages with the transmitter's Event History function. When an Alarm icon is displayed, the target gas concentration exceeds one or both preset alarm levels. The General Status Screen displays the gas concentration and the alarm level

4The LCD screen's refresh rates are 500 milliseconds (when the LCD heater is off) and 1 second (when the heater is on).

exceeded.

Section 1 - Introduction

XNX Universal Transmitter

Alarm Icon

Alarm Level Triggered

Target Gas Concentration
Figure 16. General Status Alarm detail
In an over range condition, the alarm icon will display and the target gas concentration bar graph and alarm setpoints will flash.
Alarm Level Triggered

1.4.3 Entering the Menu Structure
Swiping the magnet over the magnetic switch or allows the user to reset faults or alarms, display current settings, or make adjustments to the device.
Note: If the Easy Reset option is set to Lock, alarms and faults cannot be reset without logging in or entering a passcode. For more information, see Section 2.5.1 Configure Security.

Full Scale Concentration

Concentration Bar, Alarm Setpoints Flash

Figure 17. General Status Over Range detail
Negative values are not displayed and do not appear on the 4-20 mA output, but they are indicated by faults or warnings when preset thresholds are exceeded. (See zero deviation in Section 6.1.1)
In addition to the graphic alarm, fault, and warning indicators, the LEDs on the front panel flash in these patterns based on the condition:

Condition Red

LED1 Green

Yellow

Alarm 1 Solid

Alarm 2 Flashing

Warning

Solid

Fault

Flashing2

Health

Flashing

1The refresh rate of the LEDs is 0.5 second. 2Special states (Warmup, Inhibit) are not indicated by the Fault LED.

Swiping the or "escape" magnetic switch activates the Alarm Re-set screen and allows alarms to be silenced and faults to be reset. The switch resets all alarms and faults and returns to the General Status Screen. Use the switch to return to the General Status Screen without resetting the alarms and faults.
Figure 18. Alarm Reset screen
Two authorization levels control access based upon the security level of the user: Level 1 (routine maintenance) and Level 2 (technician and password administrator). The default passcodes for both levels are "0000" and must be reset after installation to control access (see Section 2.5.1 Configure Security). In general, access to neither security level restricts the user to viewing the transmitter's display. If desired, the Easy Reset from Main Status option allows alarm and fault resets without requiring access to either security level.

Section 1 - Introduction

XNX Universal Transmitter

Figure 19. Passcode screen
Warning: The factory-set passcodes must be reset to prevent unauthorized access to the transmitter's menus.
When the Passcode Screen is displayed, the first passcode digit is highlighted. Use the switches to increment or decrement through the values. Once the correct value is displayed for the first digit, accepts the value and moves to the next digit or moves to the previous digit of the passcode.

Figure 21. Invalid Passcode screen
1.4.4 Displaying Transmitter Information
While in the General Status display, swipe the magnet over the magnetic switch to display information about the transmitter. The General Status display will replace the bar graph in the lower portion of the screen with the unit's serial number, the date and time, and the unit's part number.

Figure 22. General Status Screen with Unit Information

Figure 20. Entering the passcode
Repeat for each of the remaining digits in the passcode. If the passcode is not entered correctly, the Invalid Passcode screen is displayed and the user is returned to the General Status screen.

Section 1 - Introduction

XNX Universal Transmitter
1.5 Main Menu
Once the proper passcode has been entered, the transmitter displays the Main Menu.

Figure 23. The Main Menu
From the Main Menu, a Level 1 user can: · display the current settings/configuration · test the transmitter · calibrate and bump test the transmitter · configure the unit for language, date and time

The Main Menu consists of these options:

Description

Configure

Provides access to settings to configure the transmitter and connected devices

Test

Provides access to tools and settings to allow simulation of gas events to test the system

Information

Displays current settings for the XNX transmitter including optional relays and Modbus

Gas

Displays the XNX interface to calibrate sensors

Calibration attached directly to the transmitter

See Section...
2.5.1
2.6.1
2.6.2
3.1

Section 1 - Introduction

XNX Universal Transmitter

1.5.1 XNX Menu Map

Status Display

Alarm/Fault Reset Display

Passcode Display

1 Information Mode
?

2 Test Mode

Main Menu

3 Calibration Mode

4 Configuration Mode

Continued on page 24
Section 1 - Introduction

Continued on page 25

Continued on page 25
23

Continued on page 26

XNX Universal Transmitter
Information Mode Alarm/Fault Status Alarm/Fault Confirm Alarm/Fault Reset Reset Alarm/Fault Date & Time Transmitter ID, Serial #, Revision Transmitter Data Transmitter Status Transmitter Status Sensor Type, Serial #, Revision Sensor Data Sensor Status Sensor Status Gas Name, ID, Range Gas Data Range Settings, Alarm Settings Range/Alarm Settings mA Level Settings mA Level Settings Relay Settings5 Relay Settings
5 Optional relay only
Section 1 - Introduction

Fieldbus Settings6 Fieldbus Settings
Event History Increment Next/Previous Event Increment Next/Previous Hour Increment Next/Previous Day Increment Next/Previous Alarm Increment Next Previous Fault
6 Optional Foundation Fieldbus and Modbus only
24

XNX Universal Transmitter
Test Mode Inhibit Enable/Disable Inhibit Force mA Output Select Current: 0 to 22 mA Accept Force Relay7 Select Relay 1 Select Relay 2 Select Relay 3 Accept Alarm/Fault Simulation Alarm 1 Simulation Alarm 2 Simulation Warning Simulation Fault Simulation

Calibration Mode
Gas Calibration Enter Span Gas Concentration (Oxygen) Enter Span Gas Concentration (Not Oxygen)
Bump Test mA Output Calibration
Adjust 4 mA Output Adjust 20 mA Output
Soft Reset8 Align Excel9

7 Optional relay only
Section 1 - Introduction

8 Searchpoint Optima and Searchline Excel only 9 Searchline Excel only
25

XNX Universal Transmitter
Configuration Mode Select Language Set Date & Time Set Date Format Set Year, Month, Day Set Hours, Minutes, Seconds Sensor Type Selection Set mV Sensor Type10 Set mA Sensor Type11 Gas Selection Changing the Gas or Units Name Gas Selections and Alarm Limits Based on mV Sensor Type Range & Alarms Set Range Alarm 1 Type Alarm 1 Setpoint Alarm 1 Latching or Non-latching Alarm 2 Type Alarm 2 Setpoint Alarm 2 Latching or Non-latching Selecting the Numeric Format Latching/Non-latching Change Meas. Units12 mA Output Levels Change mA for Inhibit
10 Catalytic bead sensor only 11 Searchpoint Optima and Searchline Excel only 12 ECC and mV only
Section 1 - Introduction

Change mA for Warning Change mA for Overrange Change mA for Low Signal Change mA for Blocked Beam
Set Calibration Interval Accept New Sensor Type13
Information screen identifying previous sensor and new sensor
Screen displays new type and old type Set Beam Block14
Select Beam Block Threshold Select Time to Beam Block
Select Time to Fault Set Path Length15
Set New Path Length Configure Unit ID
Edit ID
Clear ID
Default ID Relay Options16
Select A1 Select A2 Fieldbus Options17 Change Fieldbus Address
Change Fieldbus Speed
Security Reset and LVL1 LVL1 Code LVL2 Code
13 Electrochemical and catalytic bead sensors only
14 Searchline Excel only 15 Searchline Excel only 16 Optional relay only 17 Optional Foundation Fieldbus and Modbus only
26

XNX Universal Transmitter
2 Installation and Operation

XNX Universal Transmitter Technical Manual

XNX Universal Transmitter
2.1 Mounting and Location of Sensors
Caution: Locate transmitters and sensors in accordance with relevant local and national legiislation, standards, and codes of practice.
The placement of sensors should be determined following the advice of experts having specialist knowledge of gas dispersion, experts having knowledge of the process plant system and equipment involved, and safety and engineering personnel. The agreement reached on the location of sensors should be recorded. Consider these factors when locating gas sensors:
· possible damage caused by natural events such as rain or flooding
· ease of access for functional testing and servicing · how escaping gas may behave due to natural or forced air
currents.
2.1.1 Mounting the XNX® Universal Transmitter
The transmitter can be mounted in a number of ways using the integral mounting tabs. The transmitter can be attached to flat wall surfaces or to Unistrut®. With the optional Pipe Mount kit, the unit can be mounted to pipe of diameter 2" to 6" (50 to 150mm). A ceiling mount bracket kit (1226A0358) is also available.
Note: Agency certifications require that EC and mV sensors face down. Optima sensors must be mounted horizontally.

775" 19685 mm
600" 154 mm
56" 12424 mm

448" 1138 mm
055" 1435 mm

167" 4241 mm

12" 3175mm

2054" 5218mm
0625" 1588mm

1768" 4490 mm
1768" 4490 mm

3176" 8067 mm

6138" 15875mm

0945" 24mm

Figure 24. XNX Universal Transmitter mounting dimensions and clearances

Section 2 - Installation and Operation

XNX Universal Transmitter
Warning: When the transmitter is equipped with the optional Remote Mount Kit, the remote sensor must be securely mounted in a fixed position. The Remote Sensor kit is not intended to be used as a hand-held sensor.
The transmitter is configured with five cable/conduit ports built into the housing for wiring and mounting sensors. Figure 25 provides the guidelines to proper installation of the XNX.
While relay wiring can use any available cable/conduit port in the XNX enclosure, do not use the same cable/conduit port for both relay reset and relay signal lines to avoid electrical noise.

Option

Position

Local HART® Option

XNX Electrochemical Sensor - Local/Remote

MPD, 705 Series, Sensepoint Series

Searchpoint Optima Plus

A or E

Searchline Excel

Typically C

Remote Sensor Connection (except EC )

Any remaining

Searchpoint Optima Plus - Remote

Any remaining

Modbus

Any remaining

Relays

Any remaining

Power

Any remaining

Figure 25. XNX Universal Transmitter cable/conduit port assignments

Section 2 - Installation and Operation

Integral Mounting Lugs
Figure 26. XNX Universal Transmitter mounting lugs Figure 27. Optional pipe and ceiling mounts

XNX Universal Transmitter

2.2 Wiring the XNX Transmitter
The XNX transmitter is available in sensor technologies, or personality options, which support a variety of sensors and applications. Each of the personalities use dedicated interface boards. Pluggable terminal blocks are used for easy connection and service. The personality boards and optional communication interfaces are enclosed in plastic housings comprising the electronics POD (Personality, Options, and Display). The Personality circuit board determines the XNX behavior based on the sensor type attached to the XNX interface (Figure 35). See Specifications for drift and zero deviation values.
This table illustrates the three XNX transmitter configurations and the sensors each support.

XNX IR Personality

XNX EC Personality

Searchline Excel

Searchpoint Optima Plus Local/ Remote

Generic mA Sensors

XNX EC Sensor XNX EC Sensor Remote Mount Kit

Caution: Before wiring the transmitter, confirm that the correct personality and communication boards are installed.
2.2.1 General Wiring Considerations
For proper operation of the XNX Universal Transmitter and sensor technologies, consideration of wiring-induced voltage drops, transient electrical noise, and dissimilar earth ground potentials is imperative in the design and installation of the system.
EMI note for applications using shielded cable: Cable shield must provide 90% coverage of the wiring. Cable shield terminations must be made at the cable glands with suitable EMI-type glands. Avoid terminating cable shields at the earth ground lug inside the XNX enclosure. Loading When wiring for DC power, 4-20mA signal, remote wiring to sensors must be sized sufficiently to provide adequate voltages for the line length and the loads that will be used.

XNX mV Personality

Isolation Isolating power and signal carrying conductors is recommended.

705 Local / Remote

MPD Local (cat bead and IR) Sensepoint Local / Remote

705HT Local / Remote

MPD Remote

Sensepoint PPM Local/Remote

Sensepoint HT Remote Figure 28. XNX Transmitter personalities

Circuit Protection
Supply circuits must provide over current protection. Class 2 power supplies are required for 24 volt DC supply. Consider inrush current in specifying any DC supply. Power supply range

Section 2 - Installation and Operation

XNX Universal Transmitter

is 16 to 32 VDC for EC and mV versions, 18 to 32 VDC for Searchpoint Optima Plus and Searchline Excel, and 16 to 32 VDC depending on the limitations of the device for the generic 4-20mA input.

Single Transmitter
This is the simplest type of installation. It consists of a single XNX transmitter installation per power source.

Loads
The use of high inrush or inductive loads may affect the performance of the transmitter. For best reliability use resistive loads only.
2.2.2 Distance Considerations for Installation
Providing power to the transmitter is the factor that will determine the maximum distance of the installation. The 4-20 mA output signal will easily handle the distance back to the control equipment.
The primary factors determining distance are the minimum operating voltage of the transmitter and/or sensor; the maximum current draw of the transmitter/sensor, the resistance of the wire used, the power supply voltage, and the current capacity of power supply. An additional consideration is the type of installation; specifically, how many transmitters/sensors are drawing power from the same power supply and whether these transmitters are using the same pair of wires ("daisy-chain") or have their own connections.

Class 2 Power Supply

Figure 29. Single Transmitter Installation

Advantages: · Maximum distance between power source and transmitter · Smaller power source · If a power source fails, only one monitoring point fails.

Disadvantage: · Multiple transmitters require multiple power sources.

Multiple Transmitters Connected to a Single Power Source
This is two or more transmitters sharing a single power source with each transmitter having its own dedicated wiring to the power source.

Types of Installations
There are three basic types of installation: a single transmitter; multiple transmitters connected to a single power source; and multiple transmitters connected in a "daisy-chain" configuration.

Class 2 Power Supply
Figure 30. Multiple Transmitters Powered by a Single Power Supply
Advantages: · Maximum distance between power source and transmitters

Section 2 - Installation and Operation

XNX Universal Transmitter

· Fewer power sources.
Disadvantages: · Larger power source will be needed · If a power source fails, several monitoring points fail.

important. Power supplies are rated by voltage and power. The nominal voltage for all XNX transmitters is 24V with the power required depending on the number of points using the same power supply.

Multiple Transmitters Connected in a "Daisy-Chain" Configuration
This configuration consists of two or more transmitters installed in a line. The power connections are installed as an extension of the previous transmitter, with the first transmitter being the only one actually wired to the power source.

XNX Universal Transmitter Maximum Power Consumption

-40°C to +65°C

-10°C to +65°C

Configuration

HART over 4-20mA (watts)

HART over 4-20mA with Relay, Modbus®, or FoundationTM Fieldbus
(watts)

HART over 4-20mA (watts)

HART over 4-20mA with Relay, Modbus, or Foundation
Fieldbus (watts)

Class 2 Power Supply
Figure 31. Daisy-chained transmitters from one power supply
Advantages: · Less wire needed for installation · Fewer power sources.
Disadvantages: · Requires a larger power source · Shorter distance between power source and transmitters. · If a power source fails, several monitoring points fail.
Note: CSA/FM certification does not cover daisy-chained XNX combustible gas transmitters.

XNX with toxic sensors

5.1

6.2

3.4

4.5

XNX with catalytic sensors

5.4

6.5

3.7

4.8

XNX with infrared cartridge

5.4

6.5

3.7

4.8

XNX with Searchpoint Optima Plus

8.6

9.7

6.9

8.0

XNX with Searchline Excel

12.1

13.2

10.4

11.5

As a general guideline, the power supply should be capable of providing more power than is required by the installation. A 10 watt power supply is fine for a single XNX mV with catalytic sensor (6.5 watts required, see the following table) but is inadequate for a single XNX IR with Searchpoint Optima Plus (10 watts required).

Power Source Selection For each type of installation, selection of power supply is

To determine the wattage required, add the maximum power requirements of all the points that will share the power supply. For example, consider a system with two XNX mV transmitters with catalytic sensors (6.5 watts each) and one XNX IR with

Section 2 - Installation and Operation

XNX Universal Transmitter
Searchpoint Optima Plus (10 watts). A 25 watt power supply would probably handle this installation, but a 30 watt power supply would be a better choice.
Wire Selection The type of wire used for connections has an effect on the distance of the installation. This is because some of the voltage is lost in the wire on the way to the transmitter.
Thinner wire (i.e., 18 AWG) will lose more voltage than thicker wire (i.e., 12 AWG). The amount of voltage lost depends on how much power is being drawn through the wire; more power means more loss. If too much voltage is lost in the wiring, there may not be enough at the distant point to allow the transmitter to operate.

Configuration

Single Transmitter Distances

18 AWG

16 AWG

14 AWG

[1.0 mm2] [1.5 mm2] [2.0 mm2]

XNX mV or EC 1140 feet 1810 feet 2890 feet With Sensor [347 meters] [551 meters] [880 meters]

XNX IR with 660 feet Searchpoint Optima Plus [201 meters]
XNX IR with 550 feet Searchline Excel [168 meters]

1060 feet [323 meters]
890 feet [270 meters]

1690 feet [515 meters]
1410 feet [430 meters]

12 AWG [3.5 mm2]
4620 feet [1408 meters]
2690 feet [820 meters]
2260 feet [690 meters]

Distance Chart for Single Transmitter Distances
For installations that have dedicated wiring between the transmitter and the power supply, use the following chart. These distances assume stranded wire is used. If multiple transmitters are using the same power supply, make sure the power supply wattage rating is high enough to power all transmitters simultaneously.

Class 2 Power Supply

Class 2 Power Supply
Figure 32. Single transmitter distances

Section 2 - Installation and Operation

XNX Universal Transmitter

Daisy-Chained Transmitter Distances

It is difficult to calculate distances for this configuration. There are many factors to be considered: distance from control room to first transmitter, distance between transmitters, sensor types, etc. A few scenarios are presented here to provide a base to
work from.

Transmitter 1

Transmitter 2

Transmitter 3

Transmitter 4

Transmitter 5

Class 2 Power Supply

"d"

Figure 33. Daisy-chained transmitter distances

1. Several transmitters equally spaced from themselves and the power source.

2 Transmitters - Distance "d"

Configuration
XNX mV or EC With Sensor XNX IR with
Searchpoint Optima Plus XNX IR with
Searchline Excel

18 AWG [1.0 mm2]
380 feet [115 meters]
220 feet [67 meters]
185 feet [56 meters]

16 AWG [1.5 mm2]
600 feet [183 meters]
350 feet [106 meters]
295 feet [90 meters]

14 AWG [2.0 mm2]
960 feet [292 meters]
560 feet [170 meters]
470 feet [143 meters]

12 AWG [3.5 mm2]
1540 feet [469 meters]
900 feet [274 meters]
750 feet [229 meters]

Configuration
XNX mV or EC With Sensor XNX IR with
Searchpoint Optima Plus XNX IR with
Searchline Excel

3 Transmitters - Distance "d"

18 AWG

16 AWG

14 AWG

[1.0 mm2] [1.5 mm2] [2.0 mm2]

190 feet [58 meters]
110 feet [33 meters]
90 feet [27 meters]

300 feet [91 meters]
175 feet [53 meters]
145 feet [44 meters]

480 feet [146 meters]
280 feet [85 meters]
235 feet [71 meters]

12 AWG [3.5 mm2]
770 feet [234 meters]
450 feet [137 meters]
375 feet [114 meters]

4 Transmitters - Distance "d"

Configuration

18 AWG

16 AWG

14 AWG

[1.0 mm2] [1.5 mm2] [2.0 mm2]

XNX mV or EC 110 feet

180 feet

290 feet

With Sensor [33 meters] [55 meters] [88 meters]

XNX IR with 65 feet

105 feet

165 feet

Searchpoint Optima Plus [20 meters] [32 meters] [50 meters]

XNX IR with 55 feet

85 feet

140 feet

Searchline Excel [17 meters] [26 meters] [43 meters]

12 AWG [3.5 mm2]
460 feet [140 meters]
270 feet [82 meters]
225 feet [68 meters]

5 Transmitters - Distance "d"

Configuration

18 AWG

16 AWG

14 AWG

[1.0 mm2] [1.5 mm2] [2.0 mm2]

XNX mV or EC 75 feet

120 feet

190 feet

With Sensor [23 meters] [36 meters] [58 meters]

XNX IR with 45 feet

70 feet

110 feet

Searchpoint Optima Plus [13 meters] [21 meters] [33 meters]

XNX IR with 35 feet

55 feet

90 feet

Searchline Excel [11 meters] [17 meters] [27 meters]

12 AWG [3.5 mm2]
300 feet [91 meters]
180 feet [55 meters]
150 feet [46 meters]

Section 2 - Installation and Operation

XNX Universal Transmitter

2. Several transmitters installed in pairs with each pair equally spaced from the next pair and the power source. These distances assume the paired transmitters are installed within 10 feet [3 meters] of each other.

Transmitters 1 and 2

Transmitters 3 and 4

Transmitters 5 and 6

Class 2 Power Supply

"d"

Figure 34. Transmitters in pairs

6 Transmitters - Distance "d"

Configuration

18 AWG

16 AWG

14 AWG

[1.0 mm2] [1.5 mm2] [2.0 mm2]

XNX mV or EC 95 feet

150 feet

240 feet

With Sensor [33 meters] [45 meters] [73 meters]

XNX IR with 55 feet

85 feet

140 feet

Searchpoint Optima Plus [17 meters] [26 meters] [42 meters]

XNX IR with 45 feet

70 feet

115 feet

Searchline Excel [14 meters] [21 meters] [35 meters]

12 AWG [3.5 mm2]
385 feet [117 meters]
225 feet [68 meters]
185 feet [56 meters]

2 Transmitters - Distance "d"

Configuration

18 AWG

16 AWG

14 AWG

[1.0 mm2] [1.5 mm2] [2.0 mm2]

XNX mV or EC 485 feet

775 feet 1230 feet

With Sensor [147 meters] [235 meters] [292 meters]

XNX IR with 380 feet

600 feet

960 feet

Searchpoint Optima Plus [115 meters] [180 meters] [290 meters]

XNX IR with 280 feet

440 feet

700 feet

Searchline Excel [85 meters] [134 meters] [213 meters]

12 AWG [3.5 mm2]
1970 feet [600 meters]
1540 feet [470 meters]
1130 feet [344 meters]

Ensure that wiring is adequately protected from mechanical failure in installation. Specific shorted or open circuit conditions of wiring to the MPD **I** sensors may result in full scale concentration readings prior to, or preventing the internal diagnostic routines from identifying the
external installation fault.

4 Transmitters - Distance "d"

Configuration

18 AWG

16 AWG

14 AWG

12 AWG

[1.0 mm2] [1.5 mm2] [2.0 mm2] [3.5 mm2]

XNX mV or EC 190 feet

300 feet

480 feet

770 feet

With Sensor [58 meters] [91 meters] [146 meters] [234 meters]

XNX IR with 110 feet

175 feet

280 feet

450 feet

Searchpoint Optima Plus [33 meters] [53 meters] [85 meters] [137 meters]

XNX IR with 90 feet

145 feet

Searchline Excel [27 meters] [44 meters]

Section 2 - Installation and Operation

235 feet [71 meters]

375 feet [114 meters]
35

XNX Universal Transmitter

2.2.3 POD Connections
This illustration shows the connections available on each of the terminal blocks for each type of personality board.

E F

Option Boards

J1 - Remote HART® Connector Only A B

Personality Boards

C
D
Figure 35. XNX Personality Board Terminal Block Legend
Each of the personalities use a single terminal block for connection with the exception of the IR personality, which requires a second terminal block. The personality boards also provide a dedicated pair of jumper switches to define output of the transmitter as isolated 4-20mA, Sink 20mA, or Source 20mA as well as a service jumper to allow power to the loop to continue when the transmitter is being serviced. A separate connector is used to activate local HART (see Section 2.3.1).
Local HART provides an external access to control the transmitter. An intrinsically safe (IS) barrier inside the transmitter allows the user to attach an external hand-held interrogator for programming and configuration. The external interface is intrinsically safe. It is installed in the transmitter's lower left cable/conduit port.

Board Type
EC Personality
mV Personality
IR Personality

Table A

Function

S1 S2

Source

4-20mA Output

Sink Isolated

Board Type EC Personality mV Personality
IR Personality

Table B

Connection Function

Power, 4-20mA

Power, 4-20mA,

TB1

Sensor

Power, 4-20mA,

IR Power and

Signal

Board Type
IR Personality

Table C

Function
IR 4-20mA Input

S3 S4 Source
Sink

Board Type EC Personality IR Personality

Table D

Connection Function

EC IS Barrier

TB2 Com A and B

Board Type Relay
Modbus Foundatin Fieldbus

Table E

Connection Function

TB4

Remote Reset Connector

SW5

Bus Loop Terminators

SW5 Simulation Mode

Board Type Relay

Table F Connection Function
TB3 Relay Output

Modbus
Foundation Fieldbus

TB3 Data Connection TB3 Data connection

Note: Open loop faults are not available due to HART, Modbus, and Foundation Fieldbus interfaces where a 4-20 signal cannot be used. In this case, open loop, 0mA must be used as the diagnostic.

The Option circuit boards vary depending upon the option selected when ordered. Only one of the three available interface options (relays, Modbus, or Foundation Fieldbus) can be attached to the XNX transmitter. When installed, connections to the options are made to connectors at the bottom of the POD.

Section 2 - Installation and Operation

XNX Universal Transmitter

2.2.4 4-20mA Output, Common Connections, and Power Settings
The XNX Universal Transmitter allows the user to configure the 4-20mA output to Sink, Source, or Isolated mode operation via two programming switches on the POD1. The Switch Configuration table shows the S1 and S2 setting and corresponding output configuration.
Switch Configuration Mode S1 S2 Source Down Up Sink Up Down Isolated Down Down

the maximum is 500 ohms. If the 20 mA output is not used, a 500 ohm resistor must be installed.
The XNX Universal Transmitter power consumption is dependent on the sensor and options for the specific configuration. For proper operation, the input voltage must be maintained at 16 to 32 VDC for EC and mV units and 18 to 32 VDC for IR units.

Controller +VE 1
RL Signal 2
-VE 3

1-1 +V

XNX

1-5 +mA
Current Flow
1-3 -V

XNX Sink Configuration
Figure 36. Sink wiring for XNX

Most controllers in the market will accept source-configured devices. Sink-configured signals are used in older technology controllers, which reduce the need for complete system upgrades.In isolated-signal devices, if the controller fails or the mA signal wires are disconnected or broken, the field device will remain operational. Most controllers in the market will accept isolated configured devices.

Terminate cable screen at the detector or controller, not both

Controller

XNX

+VE 1

1-1 +V

Signal 2

Current Flow

-VE 3

1-6 -mA 1-3 -V

Power and 4-20mA connections are made at TB-1 and are identical for the EC, IR, and mV Personality Boards. For user convenience, a second set of +Ve and -Ve power terminals have been provided to eliminate the need for a secondary junction box in multi-node systems when used with the supplied terminal jumpers.

The total load resistance for the 4-20mA output should be kept lower than 500, including the resistance of the properly selected 4-20mA cable and input impedance of the equipment to be connnected. The minimum loop impedence is 200 ohms;

1 The 4-20 mA output state is refreshed at least every two seconds (once per second is typical).

Section 2 - Installation and Operation

XNX Source Configuration
Figure 37. Source wiring for XNX

Controller +V1
+V2

1-1 +V 1-5 +mA

XNX

-V2

-mA 1-6

-V1

1-3 -V

XNX Isolated Configuration

Figure 38. Isolated wiring for XNX

XNX Universal Transmitter

Labels applied to the back of the POD identify each of the connection points.
Note: Pins 2 and 4 of terminal block TB1 have no internal connection on the personality board. When used with the terminal block jumpers, pins 2 and 4 can provide additional 4-20mA connections or supply power for daisy-chained units.

2.2.5 Foundation Fieldbus Wiring

Foundation Fieldbus connections to the XNX transmitter are
made through a pluggable terminal block on the Foundation
Fieldbus option board, shown in Figure 39. A simulation switch (SW5) is included on the board to enable/disable simulation
mode. Terminals 3-1 through 3-4 are provided to facilitate bus wiring; there is no internal connection to other XNX circuitry.
Terminal 3-1 is connected internally to 3-2. Similarly, terminal 3-3
is connected internally to 3-4.

S5 Sim Mode

12 3456

Foundation Fieldbus ground cable

Out In

TB-3 Modbus
+ +
TB-3 FFB
3-1 F+ 3-2 F+ 3-3 F3-4 F3-5 FS 3-6 FS Use shorting jumper supplied to maintain connection during service

SW5 Sim switch
Jumper assignments

to internal ground lug
Internal ground lug

2.2.6 Terminal Block Connections
Connections to the transmitter are made via pluggable terminal blocks secured to the back of the POD. The terminal blocks are keyed and polarized. A color coded label assists in wiring when the block is removed from the POD.
The terminals are suitable for use with 12 to 28 AWG or 0.8 to 2.5mm2 wire. Wire insulation must be stripped 5/16" (0.312") or 8mm. Tighten each terminal to a maximum of 4.5 in-lbs (0.51 Nm). Up to four terminal blocks are provided; each having 2, 6, 9, or 10 positions (see the XNX Quick Start Guide for additional details). Two terminal block jumpers are included to provide an electrical connection without connection to the Personality Board. Install the jumpers between pins 1 and 2 and between pins 3 and 4 to support multi-node wiring.
Warning: When the transmitter is equipped with the optional Remote Mount Kit, the remote sensor must be securely mounted in a fixed position. The Remote Sensor kit is not intednded to be used as a hand-held sensor.

Figure 39. XNX Foundation Fieldbus option board and terminal block

Section 2 - Installation and Operation

XNX Universal Transmitter
Terminal Block Jumper

IN TB-1 Terminal Block

OUT

Figure 40. Pluggable Terminal Block and Terminal Block Jumper

2.2.7 EC Personality Wiring
Caution: Do not force the POD into the enclosure. Doing so may result in damage to the wiring or the POD or may alter the switch settings. If resistance is felt, wires may be preventing the POD from being properly positioned.

LOCAL

J1 HART

20 mA Operation

S1 S2 Source Sink S1 S2 Isolated
+V 1-1

1-2

-V 1-3

1-4

+mA 1-5

4-20mA 16-32 VDC HART 6.2W max.

-mA 1-6

EC TB-1

EC Barrier J2

J1 - Local HART Connector

S1 and S2 - Signal Output Jumper Switch

Source

Sink

Isolated

J2 - EC Barrier Connector

XNX EC TB-1

12 3456

TB1

Position

+24

Figure 41. XNX EC Personality Board Terminal Blocks and Jumper Switches and Terminal Block Assignments

Section 2 - Installation and Operation

XNX Universal Transmitter

J1 HART

S1 S2

Terminal Block 1

Optional Local HART IS Barrier must be connected to J1

J2 EC Barrier
EC IS Barrier must be connected to J2

HART Adaptor

Local HART IS Barrier (optional)

EC IS Barrier

EC Adaptor

Sensor Cartridge Sensor Retainer

Weatherproof Cap Local Sensor Mounted to Transmitter

Weatherproof Cap
Sensor Mounted to Remote Sensor Kit
Figure 42. EC Personality Wiring
Section 2 - Installation and Operation

XNX Electrochemical Sensor Installation
EC Sensor Installation
Caution: A missing oxygen cell will result in 0% V/V O2 gas concentration, thus triggering alarm events. In this situation, check the connection of the EC cell to the sensor connector board.
Caution: For biased sensors (e.g., nitrogen dioxide) remove the sensor stabilizer from the bottom of the sensor prior to installation.
Using Figure 42 as a guide, follow this procedure: 1. Verify that the label on the new sensor is the correct gas type. 2. Unscrew the weatherproof cover, loosen the retainer locking screw with the supplied hex key, and unscrew the sensor retainer. 3. Plug in the new sensor. Take care to align the sensor pins with the connector. 4. Refit the sensor retainer, tighten the locking screw with the hex key, and refit the weatherproof cover. Countdown time of up to 180 seconds (depending on the sensor type) will be displayed. 5. Acknowledgement of the gas type will be required before proceeding. For more information on setting gas type, see Section 2.5.1 Gas Selection.
40

XNX Universal Transmitter
6. After the sensor is installed and the gas type is confirmed, the range, alarm levels, and other important settings must be set; see Section 2.5.
7. After the transmitter has been configured, calibrate the sensor following the procedures in Section 3 Calibrations.

Transmitter
Sensor Retainer & Locking Screw

New Sensor
3

Note: Reference Control Drawing 3000E3157 and 3000E3159 for install requirements on EC cells and remote mounting.
XNX EC Sensor Remote Mounting Kit
The remote sensor mounting kit is used to mount the XNX EC sensor up to 50 feet away from the transmitter. To mount the sensor remotely, follow this procedure:
1. Unscrew the weatherproof cover, loosen the retainer locking screw and unscrew the sensor retainer.
2. Remove the sensor by pulling without twisting. 3. Plug the remote sensor cable connector into the bottom of
the transmitter. 4. Route the cable to the location where the remote sensor is
to be mounted. 5. Optional: make a loop of cable at the junction box. This
will provide some slack for any future re-terminations. 6. If necessary, cut the cable to the required length.

Caution: Take care not to cut the cable too short. Once cut, additional lengths of cable cannot be added as this would invalidate the intrinsically safe certification.

Weatherproof Cap
Figure 43. Installing Plug In Sensor

Warning: Enclosures of remotely mounted sensors contain aluminum. Be careful to avoid ignition hazards due to impact or friction when installed in Zone 1 locations.

Section 2 - Installation and Operation

XNX Universal Transmitter
7. Mount the remote sensor junction box ensuring enough room below to fit the sensor and weatherproof cover. See control drawing 3000E3157 in Section 7.2 for specific mounting information.
8. Attach the cable to the remote terminal box via the gland provided.
9. Make the wiring connections as shown in Figure 43. 10. Fit the Terminal box lid. 11. Plug the sensor into the socket at the bottom of the terminal
box. 12. Fit the sensor retainer, tighten the locking screw, and fit
the weatherproof cover. 13. Calibrate the sensor following the procedure in Section
3.2.1.

Connections
Pin # Color 1 Yellow 2 Green 3 Blue 4 White 5 Red 6 Black

Sensor Cartridge Sensor Retainer Weatherproof Cap

Sensor Mounted to Remote Sensor Kit Figure 44. Installing Remote Sensor Mounting Kit

Section 2 - Installation and Operation

XNX Universal Transmitter
2.2.8 mV Personality Wiring
XNX Universal Transmitter with the mV personality Board allows interface to HA's Multi Purpose Detector (MPD) and field proven 705 and Sensepoint devices.
Caution: See Section 6 - Specifications to ensure that the transmitter and the mV sensor have the appropriate approvals prior to commissioning.

Caution: Verify that the mV sensor being installed has compatible threads (3/4 NPT or M25).
Read Section 2.2 which defines the XNX power and 4-20mA output connections that are common to all personalities. Connections from the mV Sensor to the XNX are made via a single pluggable terminal block allowing ease of installation and service. Honeywell Analytics recommends that an 8" (203 mm) service length for wiring be maintained. The wire colors for the connections for each sensor type are shown in the following Wire Color from Sensor table. Verify that wires for 4-20mA outputs are routed away from sources of noise such as relay wires.
Note: The black and red wires from the MPD are not used with the XNX mV personality board. Ensure that they are properly isolated from live connections. Do NOT cut the wires.

Section 2 - Installation and Operation

Caution: Do not force the POD into the enclosure. Doing so may result in damage to the wiring or the POD or may alter the switch settings. If resistance is felt, wires may be preventing the POD from being properly positioned.
Caution: Be certain to dress the wires properly to ensure cabling does not contact switches 1-2 on the back of the POD.

XNX Universal Transmitter

J1 - Local HART Option Connector

LOCAL

J1 HART

20 mA Operation

S1 S2

Source

Sink Isolated

+V 1-1

4-20mA MPD, 705 16-32 VDC HART Sensepoint 6.5W max.

1-2

-V 1-3

1-4

+mA 1-5

-mA 1-6

Sense 1-7

0v 1-8

Ref 1-9

mV TB-1

S1 and S2 - 20mA Output

Jumper Switch

Source

Sink

Isolated

1 2 34 56 78 9

internal grounding lugs
XNX mV TB-1

Figure 45. mV personality board terminal blocks and jumper switches.

Wire Color from Sensor

TB-1 Desc.

mV Catalytic Bead Sensor

MPD

705 705HT

Sensept Senspt HT

Sensept PPM*

mv MPD w/IR Sensor

IR 5%

CO2

CH4

IR Flam

Pins 1-6

See subsections in Section 2.2.4 for pin identification

7 Sense

Brown

Red

Brown

White

Green

White

Ref

Blue

*Internal earth ground; approximately one inch of the black sheath that contains the Sensepoint PPM's four wires (red, blue, green, silver) must be split to allow the silver grounding wire to reach the internal grounding lugs.

Section 2 - Installation and Operation

Internal Ground Lug

J1 HART

S1 S2

Sense 7

Com 8 Ref 9

Terminal Block 1

Optional Local HART IS Barrier must be connected to J1

HART Adaptor

Local HART IS Barrier (optional)

Ground Wire from Sensepoint PPM and HT
MPD 705 Sensepoint
Figure 46. mV Personality Wiring

XNX Universal Transmitter
mV Remote Sensor Mounting The sensor can be mounted remotely from the transmitter; the installation will vary by installed location, sensor and thread type used. To remotely mount the sensor, follow this procedure:
1. Unscrew the transmitter's weatherproof cover and loosen the retainer locking screw with the supplied hex key.
2. Run conduit from one of the transmitter's available conduit ports to the location of the remote terminal housing. A terminal housing provides a mounting base for the sensor. The installation wiring enters the terminal housing via conduit.

3. Wire the pluggable terminal block as shown in Figure 45 then plug the connector into the back of the mV personality board. In remote mount MPD configurations, the 3 wires connecting the pluggable terminal block and the remote MPD must be routed through the supplied ferrite bead (Honeywell Analytics part no. 0060-1051, supplied in the accessory kit) as shown in Figure 48.
Internal Ground Lug (do not use)
Power

UL/CSA Aluminum Junction Box 2441-0022

UL/CSA Stainless Steel Junction Box 2110B2103

ATEX/IEC Junction Box 00780-A-0100

Figure 47. Remote Terminal Housings
The distance between the XNX Transmitter and remote installation must comply with these parameters to insure proper operation. Distances are dependent on sensor types and the wire gauge used.

MPD CB1, 705 Series. AWG Metric Wire Gauge Sensepoint Series
Sensors

MPD IC1, IV1 & IF1 Sensors

0.25 mm2

12m (47 ft.)

30m (97 ft.)

20m (65 ft.)

50m (162 ft.)

0.5 mm2

30m (97 ft.)

80m (260 ft.)

50m (162 ft.)

120m (390 ft.)*

1.0 mm2

80m (260 ft.)*

200m (650 ft.)*

* Frequency of Zero calibration may increase due to the changes in wire resistance from changing temperature.

Section 2 - Installation and Operation

Ferrite Bead for Remote Sensor Wiring

mV Remote Sensor

XNX Universal Transmitter

Figure 48. Ferrite bead wiring
4. Mount the remote sensor junction box with sufficient room below to fit the sensor and weatherproof cover.
Warning: Install the junction box according to local codes and manufacturer's requirements.

XNX Universal Transmitter

5. Attach the conduit to the remote terminal box. 6. In the remote junction box, connect the wires from the
transmitter to the 3-way terminal block in the terminal box.
Note: The black and red wires from the MPD are not used with the XNX mV personality board. Ensure that they are properly isolated from live connections. Do NOT cut the wires.
Warning: The enclosures of remotely mounted 705HT sensors contain aluminum. Be careful to avoid ignition hazards due to impact or friction when installed in Zone 1 locations.
All cable port devices and blanking elements shall be certified in type of explosion protection flameproof enclosure "Ex d" or "Ex e", suitable for the conditions of use and correctly installed.
7. Attach and wire the sensor in the terminal box. 8. Fit the terminal box lid. 9. Fit the sensor. 10. Calibrate the sensor following the procedure in Section 3.2
- Calibration.

communication line as long as it is in agreement with the 4-20 mA output, otherwise the 4-20mA output takes precedence.
Caution: Dress the wires properly so that cabling does not contact switches 1-4 on the back of the POD.
The transmitter provides a 4-20mA output reflecting the input received. It also offers diagnostic information or data via HART or any of the additional communication options offered. Read Section 2.2 which defines the XNX power and 4-20mA output connections that are common to all personalities.
Warning: Power off the transmitter before changing S3 or S4. Both switches must be set in either Source or Sink prior to applying power.
Caution: Do not force the POD into the enclosure. Doing so may result in damage to the wiring or the POD or may alter the switch settings. If resistance is felt, wires may be preventing the POD from being properly positioned.
Do not adjust switch settings while power is applied to the transmitter; doing so will cause permanent damage.

2.2.9 IR Personality Wiring
The XNX Universal Transmitter allows local programming and configuration through the local LCD display as well as through the HART protocol. Gas concentrations can be read at the transmitter from Searchpoint Optima Plus or Searchline Excel, via 4-20mA output as well as from the digital communication connection on TB2 that can provide additional diagnostic information. The gas concentration is taken from the digital
Section 2 - Installation and Operation

Connecting a Searchpoint Optima Plus or Searchline Excel
Connections from the Searchpoint Optima Plus or Searchline Excel to the transmitter are made via two pluggable terminal blocks allowing ease of installation and service (see Figure 49). HA recommends that an 8" service length of wiring be maintained. In remote mount configurations, the maximum distance between
46

XNX Universal Transmitter
the XNX Transmitter and Optima Plus or Excel is 100 feet (33 meters) using 0.75 mm2 (18 AWG) wire minimum.
Note: A second, black-handled screwdriver is included for use on terminal blocks 2 and 4. This tool is smaller than the magnetic wand and is designed to fit into the terminal connections on TB2 and TB4.
The Searchpoint Optima Plus or Searchline Excel can be supplied in either Sink or Source mode operation and is typically labeled on the white wire exiting the Searchpoint Optima Plus or Searchline Excel. Use the table in Figure 50 to set S3 and S4 to the same output type that appears on the wire tag of the IR device. For more information see the Searchpoint Optima Plus Operating Instructions (2104M0508) or the Searchline Excel Technical Manual (2104M0506).
Connecting Generic mA Devices
Use the following schematics to set switches S3 and S4 They must be set to the same output type (which appears on the wire tag of the mA device).
The IR personality type provides for a generic mA input under sensor type configuration. The transmitter can be used to convert the mA input to be read over HART or optional Modbus or Foundation Fieldbus protocols and set optional relays (if equipped). Additional configuration of gas type and unit ID for reporting is required (see Gas Selection). For Generic mA devices, input values below 3mA will generate Fault 155.

XNX S3 and S4 must be in the UP position Set mA Device and XNX to the same output type

XNX

mA Device

24V 7W Max

+IR 1-7

RL Signal
1-9

+mA

-IR
1-8

Current Flow
-V

Figure 49. XNX mA input sink configuration

XNX S3 and S4 must be in the DOWN position Set mA Device and XNX to the same output type

XNX

mA Device

+IR

1-7

Signal
1-9

Current Flow

-IR
1-8

-mA -V

Figure 50. XNX mA input source configuration

Section 2 - Installation and Operation

XNX Universal Transmitter

LOCAL
20 mA Operation

J1 HART

S1 S2

Source

Sink Isolated

+V 1-1

4-20mA Searchline 18-32 VDC HART Searchpoint 13.2W max.

1-2

-V 1-3

1-4

+mA 1-5

-mA 1-6

+ Ir 1-7

- Ir 1-8

Sig 1-9

Ir TB-1

TB-2 Ir Data

S3 S4
Source Sink

J1 - Local HART Connector

S1 and S2 - 20mA Output Jumper Switch

Source

Sink

Isolated

S3 and S4 - IR 20mA Input Jumper Switch

Source

Sink

Figure 51. XNX IR Personality Board Terminal Blocks, Jumper Switches
and Wiring Guide

TB1

XNX IR TB-1

TB2

TB1

Terminal No.

Desc.

+24v

0 VDC

+20mA

-20mA

+24VDC

0VDC

9 Sig - 20mA

From Searchpoint Optima Plus
Searchline Excel
See Section 2.2.4 Common Connections
.
Red Black White

Terminal No.
A B

TB2
From Searchpoint Optima Plus
Searchline Excel
Blue
Orange

Desc. Earth

XNX
From Searchpoint Optima Plus Searchline Excel Green/Yellow

HART Adaptor

Note: Honeywell Aanalytics recommends that Excel or Optima and the XNX transmitter be wired to building ground. The system should be grounded at only one point.

Section 2 - Installation and Operation

J1 HART

S1 S2

Terminal Block 1

2 3

+24

Gnd

Sig

S3 S4

Terminal Block 2 IRData

Optional Local HART ISBarrier must be connected to J1

Local HART IS Barrier (optional)

To Building Ground

Searchpoint Optima Plus

To Building Ground
Figure 52. IR Personality Wiring - Searchpoint Optima Plus

XNX Universal Transmitter

J1 HART

S1 S2

Terminal Block 1

2 3

4 5

+24

Gnd 8

Sig

S3 S4

Terminal Block 2 IR Data

Optional Local HART IS Barrier must be connected to J1

Conduit/armored cable RFI and EMC shield

HART Adaptor

Local HART IS Barrier (optional)

Earth loop through the conduit/armored cable must be avoided
Control Room

Internal body screw

Isolation kit is not important in this configuration

External body screw
Mounting plate must be connected to the same earth ground as the XNX transmitter

Searchline Excel

To local building ground

Control Room

Armor

RFI and EMC shield
Notes: Ground loops through the armor must be avoided. If armor is connected to the XNX transmitter via a conductive EXd cable gland, the armor must not be earthed at any other location (this will prevent ground loops). Since it is already earthed at the transmitter. Armor must be grounded only if an isolating gland is used to connect it to the transmitter.
Ground loops through the RFI and EMC shield must be avoided. RFI and EMC shield must be connected to a clean/instrumentation earth ground at the control room. To avoid an earth loop, connect it only at the control room (not at the transmitter).

XNX Transmitter

Figure 53. IR Personality Wiring - Searchline Excel

Section 2 - Installation and Operation

Attaching the Searchpoint Optima Plus to the XNX Universal Transmitter For M25 entries, insert the seal (P/N 1226-0410) into the proper cable/conduit opening then thread the locknut (P/N 1226-0409) onto the Optima to the end of the threads. Thread the Optima body into the transmitter until the seal compresses and/or the Optima bottoms out. Reverse until the semi-circular pattern of holes on the front of the weather protection are on the bottom (see below). Tighten the locknut to the XNX body.
Figure 54. Searchpoint Optima Plus orientation
The 3/4" NPT ports do not require the seal and locknut. The form of the threads provide positive locking and sealing.
Note: When attaching the Searchpoint Optima Plus, coat the threads with an anti-seize compound to prevent corrosion.
Searchline Excel and Searchpoint Optima Plus Remote Installation Junction Boxes are available for the Searchline Excel and Searchpoint Optima Plus to facilitate remote mounting from the XNX Universal Transmitter. Junction boxes are available for installations requiring UL/CSA or ATEX approvals. Consult 49

XNX Universal Transmitter
the Searchline Excel Technical Handbook (2104M0506) or Searchpoint Optima Plus Operating Instructions (2104M0508) for specifics on remote installations or contact your Honeywell Analytics representative for more information.

Searchpoint Optima Plus or Searchline Excel Wiring Recommendations
When wiring the XNX transmitter and the Searchpoint Optima Plus or Searchline Excel for remote applications, the general recommendations of the ANSI/TIA/EIA-485-A standard must be adhered to with the following additions:
1. When mounting the Searchline Excel or Searchpoint Optima Plus, run wiring connections between each Excel or Optima and the transmitter in a dedicated separate conduit.
2. Use 18 AWG twisted shielded cable for the RS485 connection between Excel or Optima and the XNX. Make sure that the shield of the cable is grounded to earth and XNX ground on one end ONLY.
3. Avoid running wiring near main cables or other high voltage equipment.
4. Do not apply 120 ohm terminating resistors. These resistors are not required due to low data rates.
5. Honeywell Analytics recommends that Excel or Optima sensors and the XNX transmitter be wired to building ground. The system should be grounded at one point only.

INSTALLATION TIP:
Always perform a soft reset after connecting the Searchpoint Optima and XNX transmitter for the first time. The soft reset is performed by accessing the transmitter's Calibration Menu.

Section 2 - Installation and Operation

Pair 1: Unit Ground and IRSense (Cable Shield Grounded ONEEND ONLY)

Pair 2: RS485+ and RS485(Cable Shield Grounded ONEEND ONLY)

Pair 3: IR+ve and IR-ve (Cable Shield Grounded ONEEND ONLY)

J1 HART

LOCAL

20 mA Operation

S1 S2 Source Sink S1 S2 Isolated +V 1-1

1-2

IRSens IR-ve

Twisted Shielded Pair 18 AWG
Junction Box

IR+ve

-V 1-3

1-4

+mA 1-5

-mA 1-6

+ Ir 1-7

- Ir 1-8

IRSens (silver) IR+ve (red)
IR-ve (black) RS485+ (yellow)
RS485- (blue) Unit Gnd (green)

Sig 1-9

RS485+

Ir TB-1

TB-2 Ir Data

RS485-

S3 S4 Source
Sink

Searchline Excel Searchpoint Optima Plus

RS485 Cable Shield Ground ONEEND ONLY

+ve -ve

Power Supply

Figure 55. XNX IR Remote Wiring
4-20mA Searchline 18-32 VDC HART Searchpoint 13.2W max.

Single Ground Point

XNX Universal Transmitter

2.3 Options
2.3.1 Local HART Interface
Available with any sensor technology or option, this option provides an external access to the HART interface in the transmitter. An IS barrier inside the transmitter allows the user to attach an external hand-held interrogator for programming and configuration. The external interface is installed in the lower left cable/conduit port of the transmitter and is intrinsically safe (IS).

Layer Test Procedure, HCF_TEST-2. · Data transfer rate: 1200 bps. HART devices can operate in point-to-point or multidrop configurations.
Caution: Device address changes must be performed only by qualified service personnel.

Point-to-Point Mode
In point-to-point mode, the 420 mA signal is used to communicate one process variable, while additional process variables, configuration parameters, and other device data are transferred digitally via HART protocol (Figure 57). The 420 mA analog signal is not affected by the HART signal.

Multiplexer

Control System or Other Host Application

Figure 56. XNX Universal Transmitter with HART Interface IS Barrier installed
The HART protocol is a communication technology used with smart process instrumentation, providing two-way digital communication simultaneously with the 4-20mA analog signaling used by traditional instrumentation equipment. For more detailed information on HART, see the HART Protocol and www. hartcomm.org.
Implementation of the HART protocol in the XNX transmitter: · Meets HART 6.0 physical layer specification · The physical layer is tested according to HART Physical

Section 2 - Installation and Operation

Barrier

Note: Instrument power is provided by an interface or external power source that is not shown

Handheld Terminal

Field Device Figure 57. Point-to-Point Mode of Operation

XNX Universal Transmitter

Multidrop Mode The multidrop mode of operation requires only a single pair of wires and, if applicable, safety barriers and an auxiliary power supply for up to 8 field devices (Figure 58). All process values are transmitted digitally. In multidrop mode, all field device polling addresses are >0, and the current through each device is fixed at a minimum value (typically 4 mA).
Control System or Other Host Application
Handheld Terminal
Input/Output (I/O) System
Note: Instrument power is provided by an interface or external power source that is not shown Field Devices Figure 58. Multidrop Mode of Operation
Note: Use multidrop connection for supervisory control installations that are widely spaced, such as pipelines, custody transfer stations, and tank farms.
In general, the installation practice for HART devices is the same as conventional 4-20mA instrumentation. Individually shielded twisted pair cable, either in single-pair or multi-pair varieties, is the recommended wiring practice. Unshielded cables may be

used for short distances if ambient noise and cross-talk will not affect communication.
The minimum conductor size is 0.51mm diameter (#24 AWG) for cable runs of less than 5,000 ft (1,524m) and 0.81mm diameter (#20 AWG) for longer distances.
Cable Length
Most installations are well within the 10,000 ft (3,000 m) theoretical limit for HART communication. However, the electrical characteristics of the cable (mostly capacitance) and the combination of connected devices can affect the maximum allowable cable length of a HART network. The table below shows the effect of cable capacitance and the number of network devices on cable length. The table is based on typical installations of HART devices in non-IS environments, i.e. no miscellaneous series impedance.
Detailed information for determining the maximum cable length for any HART network configuration can be found in the HART Physical Layer Specifications.

Cable Capacitance pf/ft (pf/m) Allowable Cable Lengths for 1 mm (18 AWG) Shielded Twisted Pair feet (meters)

Number of Network 20 pf/ft

30 pf/ft

50 pf/ft

70 pf/ft

Devices

(65 pf/m) (95 pf/m) (160 pf/m) (225 pf/m)

9,000 ft

6,500 ft

4,200 ft

3,200 ft

(2,769 m) (2,000 m) (1,292 m)

(985 m)

8,000 ft

5,900 ft

3,700 ft

2,900 ft

(2,462 m) (1,815 m) (1,138 m)

(892 m)

7,000 ft

5,200 ft

3,300 ft

2,500 ft

(2,154 m) (1,600 m) (1,015 m)

769 m)

Section 2 - Installation and Operation

XNX Universal Transmitter
2.3.2 Relays
The relay option (XNX-Relay) provides 3 form "C" SPCO contacts for alarm and fault indication. TB4 allows alarms to be reset remotely.
Note: This option is not available when the Modbus or Foundation Fieldbus options are installed.
Wiring for the relays is through an available cable/conduit port to a pluggable terminal block. See Figure 35 for the terminal block legend.
Note: A second, black-handled screwdriver is included for use on terminal blocks 2 and 4. This tool is smaller than the magnetic wand and is designed to fit into the terminal connections on TB4.

TB4
Remote Reset SW
Relay Ratings 250VAC 5A 24VDC 5A
3-1 NC
3-2 C
3-3 NO
3-4 NC
3-5 C
3-6 NO
3-7 NC
3-8 C
3-9 NO
TB-3 RELAY
Warning: Power externally supplied. Disconnect at source prior to servicing.

Fault Level 2 Level 1

TB3

2 1
TB4
TB3 Relay Connections Warning: Power externally supplied, disconnect at source
prior to servicing Relay Contact Ratings:
250 VAC 5 amps 24 VDC 5 amps

Relay

TB3

TB4

Figure 59. XNX Relay Option Board Terminal Blocks

The XNX transmitter has three relays: relay 1 is for alarm level 1, relay 2 is for alarm level 2, and relay 3 is for faults and special states. All special states are indicated by the fault relay.
Honeywell Analytics recommends that the fault relay be used in all installations to maintain safe operation. See Set Alarm Values for more information.
The relay state is refreshed every 2 seconds. The fault relay is normally energized indicating proper operation. In the event of power failure or fault, the C-NO connection will open.

2.3.3 Modbus
The optional Modbus interface allows all transmitter local user interface (LUI) functions and parameter settings to be transmitted.
Modbus is a master-slaves protocol. Only one master (at a time) is connected to the bus. Up to 247 slave nodes are also connected to the same serial bus. Modbus communication is always initiated by the master. The slave nodes never transmit data without receiving a request from the master node. The slave nodes never communicate with each other. The master node initiates only one Modbus transaction at a time.

Section 2 - Installation and Operation

XNX Universal Transmitter

Out In
Out In

S5 EOL Term RT =120
TB-3 Modbus
3-1 + 3-2 + 3-3 3-4 3-5 A 3-6 A 3-7 B 3-8 B 3-9 S 3-10 S Use shorting jumper supplied to maintain connection during service

Terminals 3-1 through 3-4 are provided to facilitate bus wiring; there is no internal connection to other XNX circuitry. Terminal 3-1 is connected internally to 3-2. Similarly, terminal 3-3 is connected to 3-4

SW5 - Loop Termination

10 9

TB3 Modbus Connections
Use Jumper to maintain connection during service

Modbus

TB3

Figure 60. XNX Modbus Option Board Terminal Block / Jumper Switch

Modbus connections to the XNX are made through a pluggable terminal block on the Modbus interface circuit board. Modbus RTU protocol uses ASCII/Hex protocols for communication. See Figure 35 for the terminal block legend. A loop termination point (SW5) is included on the Modbus interface board to provide
termination of the Modbus loop.

2.3.4 Foundation Fieldbus

Foundation Fieldbus connections to the XNX transmitter are
made through a pluggable terminal block on the Foundation
Fieldbus option board, shown in Figure 60. A simulation switch (SW5) is included on the board to enable/disable simulation
mode. Terminals 3-1 through 3-4 are provided to facilitate bus wiring; there is no internal connection to other XNX circuitry.
Terminal 3-1 is connected internally to 3-2. Similarly, terminal 3-3
is connected internally to 3-4.

S5 Sim Mode

12 3456

Foundation Fieldbus ground cable

TB-3 Modbus
+ +
TB-3 FFB
3-1 F+ 3-2 F+ 3-3 F3-4 F3-5 FS 3-6 FS Use shorting jumper supplied to maintain connection during service

SW5 Sim switch
Jumper assignments

to internal ground lug
Internal ground lug

Foundation Fieldbus

TB3

F+

F-

Figure 61. Foundation Fieldbus Option Board, Terminal Block, Jumper Switch

Section 2 - Installation and Operation

XNX Universal Transmitter
2.4 Powering the XNX for the First Time
2.4.1 XNX Units Configured for EC, mV, and IR (except Searchline Excel)
After mounting, wiring the transmitter, wiring the specific mV or IR sensor or installing the EC cartridge, the installation is visually and electrically tested as described below.
Warning: Minimum and maximum controller alarm levels should not be set at less than 10% or greater than 90% of the full scale range of the sensor. CSA and FM agency limits are 60% LEL or 0.6mg/m3.
1. Verify that the transmitter is wired correctly according to this manual and the associated control equipment manual.
2. If equipped, unscrew the weatherproof cover, loosen the sensor retainer locking screw, and unscrew the retainer.
3. For EC sensors, plug in the sensor cartridge, taking care to align the sensor pins with the connector holes in the PCB.
Caution: For toxic sensors, remove the shorting clip from the bottom of the sensor prior to installation. No shorting clip is provided with O2 sensors.
4. Refit the sensor retainer, tighten the locking screw and refit the weatherproof cover.
Note: Before replacing the cover on the transmitter housing, coat the threads with anti-seize compound to prevent corrosion buildup.

Note: Inspect the cover O-ring for cracking or any other defects that might compromise the integrity of the seal. If it is damaged, replace with the O-ring supplied in the accessory kit.
5. Apply power to the transmitter. This will in turn provide power to the sensor.
6. During warmup, the XNX transmitter will be forced to 2mA (inhibit mode).
7. The transmitter will enter a boot-up routine displaying the initialization screen. The transmitter loads its operating system, data from the sensor, sensor software version numbers, gas type, the detection range and span calibration gas level, estimated time to next calibration due, and self test result. This will take about 45 seconds.
Figure 62. XNX Initialization and General Status Screens
In the final stages of boot-up, warnings and faults may be observed until the user performs the proper configuration, calibration, and reset activities described in the following sections. See Section 5 for descriptions of warnings and faults. Once the General Status screen appears, the transmitter and sensor are in normal monitoring mode.

Section 2 - Installation and Operation

XNX Universal Transmitter
Note: Calibration of sensors attached to the transmitter is mandatory before the sensor can be used for gas monitoring. Refer to Section 3 - Calibration for the procedure.

version numbers, gas type, the detection range and span calibration gas level, estimated time to next calibration due, and self test result. This will take about 45 seconds.

Note: For initial commissioning, refer to EN 60079-29-2.

2.4.2 LCD and LED Test
The LCD and LED test is performed in the initialization after powering on. All LCD pixels and LEDs (red, green, and yellow) are turned on for 1.5 seconds. The LCD then goes blank and the LEDs turn off.
2.4.3 XNX IR Units Configured for Searchline Excel
When powering the transmitter fitted with a Searchline Excel sensor, the following procedure must be followed to assure proper installation.

1. Verify that the transmitter is wired correctly according to this manual and the associated control equipment manual.
2. Apply power to the XNX transmitter. This will in turn provide power to the sensor.
3. The sensor output will be forced to 2mA (default fault/ inhibit).

4. The XNX transmitter will enter a boot-up routine, displaying the initialization screen. The transmitter will load its operating system, data from the sensor, sensor software

Section 2 - Installation and Operation

Figure 63. XNX Initialization and General Status Screens
In the final stages of boot-up, warnings and faults may be observed until the user performs the proper configuration, calibration, and reset activities described in the following sections. See Section 5 for descriptions of warnings and faults.
5. When the XNX completes boot-up, perform a soft reset (see Section 3.6 Soft Reset) on the Excel sensor from the Calibration Menu. When the soft reset is intitated, the RS485 communication will be temporarily interrupted and faults F120 and/or F161 may be observed. The RS-485 communication will be re-established in a few minutes and the faults will automatically be reset in the Non-Latching mode. F120 and/or F161 must be reset manually in the Latching mode.
6. Set the Path Length for the application, then align the transmitter and receiver (see Section 3.5 Align Excel).
7. Once the alignment is complete, a Zero Calibration must be performed on the Excel sensor to complete the commissioning process. (See the Searchline Excel

XNX Universal Transmitter
Technical Manual for calibration information P/N 2104M0506).
8. Reset any faults that appear in the transmitter's display. The XNX transmitter and Searchline Excel sensor are now ready to monitor.

Warning: When configuring or communicating with the transmitter using the front panel displays, resume monitoring by exiting all menus and returning to the General Status menu manually. No time outs are invoked.

2.5 Configuring the XNX Universal Transmitter
The XNX Universal Transmitter can be configured via the front panel by using the menus available in Configure Menu. For information on accessing and navigating the menus, see Section 1.4.1.
2.5.1 Configure Menu
Functions in the Configure Menu and the security levels required to change them are explained in this table.

Symbol

Description

Select Language

Set Date & Time

Set mV Sensor Type

Security Level 1
1
2

Symbol

Description

Calibration Interval Accept New Sensor Type Beam Block Options

Security Level 2
2
2

Set mA Sensor Type

Path Length

Gas Selection

Unit ID

Range & Alarms

Latching/Nonlatching

Set Units

Relay Options

Fieldbus Options

Configure Security

mA Levels

Note: With the exception of Inhbit Mode, gas measurement continues in the background allowing users to navigate screens without taking the transmitter offline.
Select Language
Available languages for the XNX transmitter are English, Italian, French, German, Spanish, Russian, Mandarin, and Portuguese.
Figure 64. Select Language Menu
Different screens are used to display each of the eight available languages, one language per screen. Each language screen will appear in three languages: the selected language, Russian, and Mandarin. To select a new display language, use the switches to navigage through the selections. Use to make the selection or to discard the selection and return to the previous menu.

Section 2 - Installation and Operation

XNX Universal Transmitter

Set Date

Figure 65. Language Selection Screen
Figure 66. Accept Language Change Screen
Set Date & Time

Figure 69. Set Date Format Screen / Set Date Menu
Use the Set Date selection to set the current date. Use the switches to select the year, month, and day. Select to set the desired date.

Figure 67. Set Date & Time Menu
Select "Set Date and Time" to change the date format and set the current time/date into the XNX.
Set Date Format

Figure 70. Setting the Date Screen
Use the switches to decrement or increment the values until the desired value appears. Select to set the value and move to the next character. Repeat for each character to be changed.
Set Time

Figure 68. Set Date Format Menu

Use the

switches to highlight "MM/DD/YY." Select to set

the date format.

Figure 71. Set Time Menu
Use the switches to decrement or increment the values until the desired value appears. Use to select the value and move to the next character. Repeat for each character to be changed.

Section 2 - Installation and Operation

XNX Universal Transmitter

Set mV Sensor Type

Figure 72. Set Time Screen

Use the

switches to navigate to the ü. Select it to save the

changes. If ü is not selected, no changes will be saved.

Figure 75. Set mV Sensor Type Screen
Set mV Sensor Type sets the identity of the type of mV sensor attached to the transmitter. The available mV sensor type selections are:

Figure 73. Accept Time-Date Changes
When the new settings have been saved, the "Settings Accepted" screen will be displayed.
Figure 74. Time-Date Settings Accepted
The remainder of this section requires Level 2 security access.

Sensor MPD-IC1 (5%V) MPD-IV1 (5%V) MPD-IV1 (100%L) MPD-IF1 (100%L) MPD-CB1 (100%L) 705-HT (20%L) 705-HT (100%L) 705-STD (100%L) SP-HT (20%L) SP-HT (100%L) SP-STD (100%L) SP-PPM (10%L) SP-PPM SP-HT-NH3

Description MPD Carbon Dioxide 5%Vol MPD Methane 5%Vol MPD Methane 100%LEL MPD Flammable 100%LEL MPD Flammable 100%LEL 705 Flammable 20%LEL (High-Temp) 705 Flammable 100%LEL (High-Temp) 705 Flammable 100%LEL Sensepoint Flammable 20%LEL (High-Temp) Sensepoint Flammable 100%LEL (High-Temp) Sensepoint Flammable 100%LEL Sensepoint Flammable PPM (10%LEL equiv) Sensepoint Flammable PPM Sensepoint Ammonia 30,000 PPM

Section 2 - Installation and Operation

XNX Universal Transmitter

selection, retain the previously selected sensor, and return to the previous menu.

Figure 76. Current configured mV sensor and mV Available Sensor List
The first screen displays the currently configured sensor. Select to navigate to the Sensor Selection screen. To select a new mV sensor, use the switches to scroll through the list. Use to select a sensor or to discard the sensor selection, retaining the previously selected sensor, and return to the previous menu.
Set mA Sensor Type

Note: This configuration option is not available for XNX transmitters with EC sensors.
Gas Selection
Gas Selection sets the target gas for sensors capable of detecting multiple gases. The available gases for each of the capable sensors is determined by the device connected to the XNX transmitter.

Figure 77. Set mA Sensor Type Screen
Set mA Sensor Type identifies the type of mA sensor attached to the transmitter. The available mA sensor choices are "Excel/ Optima" and "Other mA Sensor."

Figure 79. Gas Selection Menu

After selecting Gas Selection, the initial screen displays the

current target gas. Select to display the list of available gases

for the configured sensor. Use the

switches to scroll through

the list. A sample of the list is shown in Figure 81.

Figure 78. mA Available Sensor List
To select a new mA sensor, use the switches to move through the list. Use to make the selection or to discard the

Figure 80. Available Target Gas List
Use to select the new gas or to discard the selection, retain the previously selected gas, and return to the previous menu.

Section 2 - Installation and Operation

XNX Universal Transmitter

When a new gas is selected, these screens are displayed:

Figure 81. Select New Target Gas
Note: The gas selections available will vary with different types of sensors. Gases listed with a "-2" suffix are compliant with 60079-20-1 LEL levels.

Warning: When selecting a new target gas for units with a Searchpoint Optima Plus, the sensor must be recalibrated.

These are the XNX transmitter's selectable gases:

· Butane (C4H10) · Carbon Dioxide (CO2) · Ethanol (C2H5OH) · Ethylene (C2H4) · Hexane (C6H14)

· Hydrogen (H2) · Methane (CH4) · Methanol (CH3OH) · Propane (C3H8) · Star 1 through Star 81

Warning: Do not use the XNX Universal Transmitter in oxygenenriched atmospheres. Concentrations displayed will be adversely affected by oxygen depletion.

Changing the Gas or Units Name If "Other mA Sensor" has been selected as the sensor type, the existing gas and units can be renamed. From the Gas Selection menu, select to open the Gas Name menu. Select again to open the Gas Name editing display. The first letter of the current selection will be highlighted (Figure 82).
Figure 82. Gas Name Screen / Gas Name editing screen
Use the switches to cycle through the 76 options (26 capital letters, 26 lower case letters, 10 numbers, 13 typographic characters, and a space). When the first character of the new gas name has been reached, select to advance to the second character. Repeat this procedure with each character until the new gas name is displayed. In this example, "mA Sensor" has been changed to "Flow Sensor" (Figure 83). The name can be up to 15 characters long. Select to return to the Gas Name screen. The new name will be displayed in reverse (light characters on a dark background). Select the switch twice to display the Accept Settings screen. Select to accept the new gas name. A "Settings Accepted" screen will be displayed briefly, followed by the Gas Selection menu.

1In nonane detection applications, if an MPD-CB1 sensor is employed, use star rating 2; with SP-HT sensors, use star rating 4.

Figure 83. Accepting the New Gas Name
Follow the same procedure to rename the units ("%" in the illustrations). The units name can be up to 5 characters long.

Section 2 - Installation and Operation

XNX Universal Transmitter

Gas Selections and Alarm Limits Based on mV Sensor Type
The following tables show the tranmsitter's programmable alarm limits.
Note: -2 Gas Selection %LEL values are per IEC 60079-20-1:2010

MPD-IC1 (5%V)

Lower Alarm Limit (% Vol)
Upper Alarm Limit (% Vol)

Carbon Dioxide 05 50

Lower Alarm Limit Upper Alarm Limit % Volume Reference

MPD-IV1 (5%V/V, 100%LEL)

Methane

Methane-1

Methane-2

05% Vol

10% LEL

50% Vol

60% LEL

n/a

Lower Alarm Limit (% LEL)
Upper Alarm Limit (% LEL)
% Volume Reference

MPD-IF1 (100%LEL)

Propane-1

Propane-2

Section 2 - Installation and Operation

XNX Universal Transmitter

MPD-CB1 (100% LEL)

Hydrogen Methane-1 Methane-2 Methanol Ethelyne-1 Ethelyne-2 Ethanol-1 Ethanol-2 Propane-1 Propane-2 Butane-1 Butane-2 Hexane-1 Hexane-2
Star 1 Star 2 Star 3 Star 4 Star 5 Star 6 Star 7 Star 8

Lower Alarm Limit (% LEL)

Upper Alarm Limit (% LEL)

% Volume Reference

4.0 5.0 4.4 5.5 2.7 2.3 3.3 3.1 2.0 1.7 1.5 1.4 1.2 1.0 n/a n/a n/a n/a n/a n/a n/a n/a

705-STD (100% LEL)

Hydrogen Methane-1 Methane-2 Methanol Ethelyne-1 Ethelyne-2 Ethanol-1 Ethanol-2 Propane-1 Propane-2 Butane-1 Butane-2 Hexane-1 Hexane-2
Star 1 Star 2 Star 3 Star 4 Star 5 Star 6 Star 7 Star 8

Lower Alarm Limit (% LEL)
Upper Alarm Limit (% LEL)
% Volume Reference

20 20 20 25 25 30 30 30 25 30 30 30 50 50 50 30 25 20 20 20 15 15 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 4.0 5.0 4.4 5.5 2.7 2.3 3.3 3.1 2.0 1.7 1.5 1.4 1.2 1.0 n/a n/a n/a n/a n/a n/a n/a n/a

Section 2 - Installation and Operation

XNX Universal Transmitter

705-HT (100% LEL)

Hydrogen Methane-1 Methane-2 Methanol Ethelyne-1 Ethelyne-2 Ethanol-1 Ethanol-2 Propane-1 Propane-2 Butane-1 Butane-2 Hexane-1 Hexane-2
Star 1 Star 2 Star 3 Star 4 Star 5 Star 6 Star 7 Star 8

Lower Alarm Limit (% LEL)
Upper Alarm Limit (% LEL)
% Volume Reference

20 15 20 20 20 20 20 20 20 20 20 20 20 20 50 30 25 20 20 20 15 15 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 4.0 5.0 4.4 5.5 2.7 2.3 3.3 3.1 2.0 1.7 1.5 1.4 1.2 1.0 n/a n/a n/a n/a n/a n/a n/a n/a

Lower Alarm Limit (% LEL)
Upper Alarm Limit (% LEL)
% Volume Reference

705-HT (20% LEL), SP-HT (20% LEL)

Hydrogen

Methane-1

Methane-2

Section 2 - Installation and Operation

XNX Universal Transmitter

SP-STD (100% LEL)

Hydrogen Methane-1 Methane-2 Methanol Ethelyne-1 Ethelyne-2 Ethanol-1 Ethanol-2 Propane-1 Propane-2 Butane-1 Butane-2 Hexane-1 Hexane-2
Star 1 Star 2 Star 3 Star 4 Star 5 Star 6 Star 7 Star 8

Lower Alarm Limit (% LEL)

Upper Alarm Limit (% LEL)

% Volume Reference

4.0 5.0 4.4 5.5 2.7 2.3 3.3 3.1 2.0 1.7 1.5 1.4 1.2 1.0 n/a n/a n/a n/a n/a n/a n/a n/a

SP-HT (100% LEL)

Hydrogen Methane-1 Methane-2 Methanol Ethelyne-1 Ethelyne-2 Ethanol-1 Ethanol-2 Propane-1 Propane-2 Butane-1 Butane-2 Hexane-1 Hexane-2
Star 1 Star 2 Star 3 Star 4 Star 5 Star 6 Star 7 Star 8

Lower Alarm Limit (% LEL)
Upper Alarm Limit (% LEL)
% Volume Reference

10 10 10 10 10 10 10 10 10 10 10 10 10 10 20 20 20 10 10 10 10 10 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 4.0 5.0 4.4 5.5 2.7 2.3 3.3 3.1 2.0 1.7 1.5 1.4 1.2 1.0 n/a n/a n/a n/a n/a n/a n/a n/a

Section 2 - Installation and Operation

XNX Universal Transmitter
SP-PPM (10% LEL)

Hydrogen

Methane-1

Methane-2

Lower Alarm Limit (% LEL) Upper Alarm Limit (% LEL)
% Volume Reference
Lower Alarm Limit (% LEL) Upper Alarm Limit (% LEL)
% Volume Reference

2.0

4.0

5.0

Hydrogen

SP-PPM

2.0 10 4.4
Methane

1000 ppm 5000 ppm
n/a

Lower Alarm Limit (% LEL)
Upper Alarm Limit (% LEL)
% Volume Reference

Section 2 - Installation and Operation

SP-HT-NH3 Ammonia 3000 ppm 30000 ppm n/a

XNX Universal Transmitter
Range & Alarms
Warning: XNX Universal Transmitters carrying UL/CSA approvals that are configured for devices measuring %LEL will not allow adjustments to the full scale value. The range is fixed at 100%.

When the Range option is highlighted, use the switches to decrement or increment the value. Use to accept the displayed value and move to the next field. When all fields have been updated, use the switch to highlight ü on the right side
of the display. Use to accept the changes.

The Range & Alarms option applies only to units with certifications otherF than UL/CSA.
Figure 84. Range & Alarms Menu
Set Range (full-scale) Range is sensor dependent. The Set Range option allows the full-scale range to be set for the sensor which is attached to the transmitter. The full-scale range is based on the capability of the sensor. The selectable range for EC sensors is defined in the Selectable Range column of the table in Section 6.3.2. The selectable range for catalytic bead sensors is defined in the Selectable Range column of the table in Section 6.3.5.
Figure 85. Range Option

Figure 86. Setting the Range Value
When complete, the display will return to the Range Option screen. Set Alarm Values Set Alarm Values allows the values for Alarm Direction and Alarm Limits for both Alarm 1 and Alarm 2 to be set.
Caution: Alarm 1 and Alarm 2 values must be less than the Upper Limit value.
Use Alarm Direction to establish whether the alarm is to be triggered by rising or falling gas concentrations. Alarms for most target gases are triggered by rising concentration levels but certain gases; e.g., oxygen, can be measured for depletion levels. When the XNX transmitter is configured with mV or OPTIMA sensors and the meaurement units are LEL, the alarm level setting is limited to 60%LEL. If the concentration of the target gas remains above the alarm values for 3 seconds or more, an alarm will be triggered.

Section 2 - Installation and Operation

XNX Universal Transmitter

When complete, the display will return to the main Range & Alarm screen. When all settings have been made, use to move to the on the display to Accept Settings.

Figure 87. Alarm Direction
The icons next to the bell images indicate whether the alarm has been triggered by rising ( ) or falling ( ) gas concentrations. Use the switches to highlight the appropriate trigger. Use to make the selection or to discard it.

Figure 91. Accept Settings
When the settings have been saved, the following screen will appear on the display.

Figure 88. Setting Alarm Rising/Falling
The Alarm Limits selection sets the alarm trigger level for both alarms.

Figure 92. Settings Accepted Screen
See Section 6.1 Product Specifications for EC cell information.

Figure 89. Alarm Limits

Use

to set the desired alarm limit and select it. Repeat

for each alarm.

Figure 90. Setting an Alarm Setpoint

Section 2 - Installation and Operation

XNX Universal Transmitter
Selecting the Numeric Format If "Other mA Sensor" has been selected as the sensor type, the transmitter's output can be displayed in one of three numeric formats. From the Ranges & Alarms menu, select the switch to open the Range menu (Figure 93). Select the switch again to display the Range Lower Limit menu. Select the switch twice to open the first Numeric Format menu.

Latching / Non-Latching
Warning: There is a potential loss of sensitivity during exposure to high concentrations of H2S. Under these conditions, set the control unit to latch at overrange. In standalone configuration, set alarms to latching. When resetting the overrange or alarm, verify correct operation of the transmitter.
Latching / Non-Latching is used to control whether Alarms 1 and 2 and faults will latch alarms.

Figure 93. Navigating to the first Numeric Format menu
Select the switch to open the second Numeric Format menu, which displays the formats available for numerical display (see Figure 94).

Figure 95. Alarm Latching/Non-Latching Screen

Figure 94. Navigating to the second Numeric Format menu

Select or to cycle through the three options. When the desired format is highlighted, select the switch to make the selection the default display format. Select twice to return to the Ranges & Alarms menu.

Figure 96. Alarm Latching
Select the or icon beside the alarm limit to display the Alarm Latching/Unlatching screen. Alarm latching determines whether alarms that are triggered are automatically reset when the condition dissipates (latching off ) or remain active until an operator resets them manually (latching on ). Highlight the desired latching option with the switches. Use to accept it.

Section 2 - Installation and Operation

XNX Universal Transmitter
Figure 97. Setting Alarm Latching/Unlatching
Use the same procedure to set the desired values for Alarm 2 and Faults. When all settings have been made, use to navigate to the on the display. Use to accept settings.
Figure 98. Accept Settings
When the settings have been saved, the following screen is displayed.

transmitted via HART, Modbus, or Foundation Fieldbus sensors attached to the XNX transmitter, reporting concentrations in PPM or %VOL (except oxygen).
Figure 100. Set Units Menu
To change the units, use the switches to highlight the units icon. Use to select it. The transmitter's display will change to the Display Unit Selection screen which shows the available choices for the sensor type installed. Use the switches to highlight the desired unit of measurement. Use to select it or to discard the selection.

Figure 101. Display Unit Selection Screen

Figure 99. Settings Accepted Screen

Caution: When changing units of measure, check alarm level settings for the proper units and change as necessary.

Note: When non-latching is selected, external alarm latching is recommended.

Once the units of measurement have been set, use the switches to navigate to the `ü' to accept the values.

Set Units
The Set Units menu allows the units of measurement displayed on the XNX main menu to be set. This option also sets the units

mA Levels
This option allows the user to select mA output levels for inhibit, fault, and over range. Beam block and low signal apply to

Section 2 - Installation and Operation

XNX Universal Transmitter
Searchline (see the table in the next column).

After all changes have been made, use the switches to move to the `ü' and use on the front panel to accept and save the settings. If `ü' is not selected, none of the changes will be
saved.

Figure 102. mA Levels Menu
Using the switches, move to the mA output to be changed and use to select it.

Figure 105. mA Settings Saved

Calibration Interval

Figure 103. Set mA Levels for Warning

Calibration Interval allows a desired interval for sensor calibration to be set for sensors attached to the transmitter. The transmitter will generate a warning when the interval is reached.

Use the switches to decrement or increment the value until the desired value appears. Use to select the value and move to the next setting. Repeat for each setting to be changed.

The default values and available output ranges for Inhibit,
Warning, Overrange, Beam Blocked, and Low Signal are shown in the following table. See Section 5 Warnings/Faults for more
information.

Signal

Output (mA) Default Min Max

I Inhibit

2.0

1.0 3.5

W Warning

3.0

1.0 3.5

O Overrange

21.0

20 22

B Beam Blocked

1.0

1.0 4.0

L Low Signal

1.0

1.0 4.0

Figure 104. Set mA Levels for Inhibit

Figure 106. Calibration Interval Menu
Calibration Interval will not appear when an IR personality board is attached and the mA sensor type is set as `Other mA Sensor'.
The default calibration values for the "Calibration Required" diagnostic vary based on sensor type. This value can be reprogrammed in accordance with site requirements to ensure the highest level of safety. Correct operation of each sensor should be confirmed using calibration with a certified gas of known concentration before commissioning.
Although the calibration Interval can be set to any value between 0 and 360 days, Honeywell Analytics recommends that the interval for electrochemical and catalytic sensors be set to 180

Section 2 - Installation and Operation

XNX Universal Transmitter
days (or fewer, in accordance with customer site procedures) to assure the highest level of safety. Use the switches to highlight the current interval and use to select it.

Accept New Sensor Type
When replacing EC cells or mV sensors, use Accept New Sensor Type to load default parameters into the XNX transmitter for calibration and sensor life. Accept New Sensor Type is also used when replacing an EC cell with another EC cell for a different target gas. (See Section 4.2.2).

Figure 107. Edit Interval and Setting Interval Value Screens
Use the switches to move to the desired position. Use to select it. Use the switches to decrement or increment the value until the desired value is reached. (The minimum number of days is 0; the maximum number is defined by the sensor type.) Use to select the value and move to the next field. Repeat for each field. When all of the fields have been updated, use the switches to highlight the `ü' on the right side of the display. Use on the front panel to save the settings.

Figure 109. Accept New Sensor Type Menu
When changing the target gas by inserting a new sensor, the transmitter will prompt the user for a confirmation of the change before adjusting to the properties of the new sensor.

Caution: Setting the Calibration Interval to zero turns off the calibration notification. This can seriously affect sensor performance.
Figure 108. Saving New Interval and New Interval Accepted Screens

Figure 110. Select New Sensor
In the display of the XNX transmitter, the old sensor type and the new sensor type will be displayed. Use to accept the new sensor or to reject it.
Beam Block Options
The Beam Block Options menu is available only if the XNX transmitter is connected to a Searchline Excel sensor.

Section 2 - Installation and Operation

XNX Universal Transmitter

Set Time to Fault sets the minimum time the beam is blocked before generating a fault.

Figure 111. Beam Block Menu
If the infrared beam from the Excel transmitter is blocked or inhibited in such a way that the intensity of the beam drops to a level below the readable threshold set by the receiver, a warning will be generated by the XNX transmitter. The Beam Block Options menu allows the user to define the maximum period of time the infrared beam can be blocked and the percentage of signal loss before generating a warning through the transmitter.

Figure 114. Beam Block Fault Time
Use the switches to move to the desired beam block time option and use to select it. Use the switches to decrement or increment the value until the desired value appears. Use to select the value and move to the next setting.

Figure 112. Beam Block Warning Time
Use the switches to move to the desired beam block time option and use to select it. Use the switches to decrement or increment the value until the desired value appears. Use to select the value and move to the next setting.

Figure 115. Setting Beam Block Fault Time
When the beam is blocked longer than the value set in Time to Fault, a fault is generated by the transmitter.
Low Signal Percentage sets the minimum percentage value of the beam that is not blocked. When the percentage decreases below the defined percentage, a fault is generated.

Figure 113. Setting Beam Block Warning Time
When the beam is blocked longer than the value set in Time to Beam Block, a fault is generated by the transmitter.
Section 2 - Installation and Operation

Figure 116. Low Signal Percentage
Use the switches to move to the desired Low Signal Percentage and use to select it. Use the switches
73

XNX Universal Transmitter
to decrement or increment the value until the desired value appears. Use to select the value and move to the next setting.

Figure 117. Setting the Low Signal Percentage
Once the values for Beam Block Warning, Beam Block Fault and Low Signal Percentage have been set, use the switch to highlight the `ü' on the right side of the display. Then use to accept the changes to the XNX. If `ü' is not highlighted, none of the changes will be saved.

Figure 120. Path Length Menu
Setting the Path Length or distance between the transmitter and receiver of the Excel lets the devices determine the optimum settings for the beam strength for the application.

Figure 118. Accept Beam Block Changes

Figure 121. Current Path Length Setting
Use the switches to move to the desired Path Length setting and use to select it. Use the switches to decrement or increment the value until the desired value appears. Use to select the value and move to the next setting.

Figure 119. Beam Block Changes Accepted
Path Length
The distance (in meters) between the transmitter and the receiver is set through the Path Length menu. This menu is available only if the transmitter is connected to a Searchline Excel sensor.

Figure 122. Setting Path Length
Once the values for Path Length have been set, use the switch to highlight the `ü' on the right side of the display. Use the to accept the changes.

Section 2 - Installation and Operation

XNX Universal Transmitter
Figure 123. Accepting Path Length Changes

Edit ID
Each XNX is assigned a default Unit ID from the factory. The Edit ID menu allows the assigned ID to be modified.

Unit ID

Figure 124. Path Length Changes Accepted

The Unit ID option allows a unique unit ID of up to 18 characters
to be set for each XNX transmitter. This character string can be
broadcast over any of the supported communication options, providing a means to create a unique identification for each XNX
transmitter for accurate reporting. Available characters are A-Z, a-z, 0-9 and special characters ? ! * % ( ) : & / , # + -

Figure 125. Unit ID Menu

Figure 126. Edit Unit ID Screen
From the Edit ID Screen, use the switches and to select Edit ID. The current Unit ID is displayed. When editing an existing ID, the list of available characters begins at the value displayed.
Figure 127. Editing the Unit ID
Use the switch to highlight the first character to be changed. Use the switches to decrement or increment the value until the desired value appears. Use to accept the new value and move to the next character. Repeat for each character to be changed. The Unit ID can be up to18 characters long. Clear ID This option clears the current set Unit ID.

Note: The XNX Unit ID is not the same as the HART tag in XNX applications using HART protocol.

Section 2 - Installation and Operation

XNX Universal Transmitter

Figure 128. Clear Unit ID and Cleared Unit ID Screens
Set ID to Default The Set ID to Default option returns the Unit ID to the factory default.

Figure 131. Relay Options Screen
XNX relays can be set to Energized or De-energized. The default is De-energized. The two states for each relay are represented by the symbols for energized and for de-energized.

Figure 129. Set ID to Default Screen
Once all changes have been made, Accept Settings must be selected before exiting the Unit ID menu. When all changes are saved, the transmitter will display the Settings Accepted screen.

Figure 132. Alarm 1 Relay Current State and Setting New State
Use the switches to move to the desired alarm and use to select it. Use the switches to change the state of the relay. Use to accept the new state. Once the XNX transmitter has accepted the new information, a Settings Accepted screen appears.

Figure 130. Accept Settings and Accepted Screens
Relay Options
The Relay Options menu allows the relays for both alarm levels to be configured. This menu is available only if the XNX transmitter is equipped with the optional relays.

Section 2 - Installation and Operation

Figure 133. Accept New Alarm Relay Settings and new Settings Accepted

XNX Universal Transmitter
Fieldbus Options
The Fieldbus Options menu allows configuration of the HART address or the optional Modbus fieldbus address and baud rate.

Figure 134. Fieldbus Options Screen
Select the Fieldbus Options icon to activate the HART/Modbus screens to allow selection of the protocols to be configured or changed. If the XNX is configured without HART or Modbus, only the installed options will be visible.

Figure 136. HART Address and Address Value Screens
Use the switches to move to the HART option and use to select it. Use the switches to scroll through the options until the desired option is highlighted. Use to accept the new state. See Section 2.3.1 and Appendix A for more information on available HART modes.

Figure 135. HART Options Screen
The HART menu provides the ability to select the HART mode. From the HART screen, use the switches to highlight the HART option, then select . This displays the HART address screen where the device address and whether the HART protocol is active in the unit can be set. To set the address, use the switches to highlight the number in the top line (between 0 and 63) and use to select it. Use the switches to decrement or increment the value until the desired value appears. Use to select the value and move to the next setting.

Figure 137. HART Mode Screens

Once the values for the HART address and Mode have been

set, use the

switches to navigate to the `ü' then select it to

save the changes to the XNX.

Figure 138. HART Settings Accepted
When the Modbus option is available, use the switches to move to the Modbus icon and use to select it. The Modbus option allows the address and communication baud rate to be set.

Section 2 - Installation and Operation

XNX Universal Transmitter

Figure 139. Modbus Options Screen
From the Set Fieldbus Address screen, select . To set the Fieldbus address, use the switches to move to the desired position and use to select it. Use the switches to decrement or increment the value until the desired value appears.
Use to select the value and moves to the next setting.

Figure 142. Accept Settings and Fieldbus Address Settings Accepted
Configure Security
Configure Security is used to set or reset the level 1 and level 2 passcodes that control access to the configuration menus of the XNX transmitter.

Figure 140. Set Fieldbus Address and Address Value Screens
The communications baud rate can be set from this screen. Use the switches to highlight the proper baud rate and select .

Figure 141. Set Baud Rate Screens

Once the values for the Fieldbus address have been set, use

the

switches to navigate to the `ü' then select it to save the

changes.

Figure 143. Configure Security Screens

Easy Reset from Main Status

The Easy Reset from Main Status option controls the ability

to reset faults, warnings, and alarms from the General Status

screen (see Section 1.4.2).

Use the

switches and to select the lock icon . The Lock/

Unlock screen will be displayed. Choose `Lock' to prevent reset

without password access. The `Unlock' choice allows resets

without requiring login or a passcode.

Section 2 - Installation and Operation

Figure 144. Lock/Unlock Screen
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XNX Universal Transmitter

Level 1 and Level 2 Passcode
Level 1 and 2 passcode screens give the administrator the ability to assign new passcodes for either or both access levels.
From the Configure Security Screen, use the switches to highlight Passcode 1. Use to choose the first digit and the switches to decrement or increment the values. Use to accept the new value and move to the next digit. Repeat until all four digits have been selected. Follow the same procedure to change the Level 2 passcode.

2.6 Verifying the XNX Configuration
2.6.1 Test Menu
The test menu icons are shown in this table:

Symbol

Description

Inhibit

Symbol

Description

Force Relay

Force mA Output

Alarm/Fault Simulation

Warning: Keep the passwords in a secure area to prevent unauthorized access to the transmitter. If the passwords are lost, resetting the XNX transmitter will require a service technician.

Figure 145. Setting Level 1 Passcode
Use the switches to move to "Accept Settings" on the display. Choose to save the settings to the transmitter.

X Inhibit

Warning: When the XNX transmitter is placed in Inhibit Mode, alarms are silenced. This will prevent an actual gas event from being reported. Inhibit Mode must be limited to testing and maintenance only. Exit Inhibit Mode after testing or maintenance activities.

Figure 146. Accept Settings and Security Settings Accepted Screens

Section 2 - Installation and Operation

Figure 147. Inhibit Screen
The Inhibit mode is designed to prevent alarms from being triggered during testing or maintenance.
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XNX Universal Transmitter

Figure 148. Inhibit Menu
Use the switches to inhibit alarms by selecting Inhibit On with the . The confirmation screen appears.

Figure 151. Inhibit Status Screen
When the XNX transmitter is in Inhibit mode, the General Status display will display the inhibit icon .

Force mA Output

Figure 149. Confirm Inhibit On
Select to place the transmitter alarms into inhibit mode. Select will cancel the choice and leave the alarms in normal operating mode.

Caution: The mA output set in this menu will revert to the normal operating values when exiting the Test Menu. For more information on setting the mA output levels for normal operation, see mA Levels.
Force mA Output allows peripheral devices driven by mA output from the XNX transmitter to be tested. Based on the mA output values set in the mA Levels option (see mA Levels), the operator chooses the mA level to output to the device.

Figure 150. Confirm Inhibit Off
To return from Inhibit mode to to the normal monitoring mode, select Inhibit Off with the . A confirmation screen appears.
Select to remove the XNX from Inhibit mode. Select `X" to cancel the choice and leave the alarms in Inhibit mode.

Figure 152. Force mA Output Screen
The New mA Output screen shows the current mA output in the left column. The output can be controlled by changing the value in the column on the right.

Section 2 - Installation and Operation

XNX Universal Transmitter

Figure 153. New mA Output Screen
Once the new value is input, use the switches to move to the `ü' and use the magnetic switch on the front panel to set the mA output.
Force Relays
Caution: Any relay conditions set in this menu will revert to the normal operating values when exiting the Test Menu. For more information on setting the relay options for normal operation, see Relay Options.

Figure 155. Relay State Screen
Once the new value is input, use the switches to move to the `ü' and use the magnetic switch on the front panel to change the condition of the relay.
Alarm/Fault Simulation
Alarm and Fault simulation work in tandem with the previous sections (Force mA Output and Force Relays) to allow thorough testing of the XNX transmitter and the peripheral warning and safety devices attached. Figure 156 shows the menu choices for selecting an alarm or fault simulation.

The Force Relay menu allows peripheral devices driven by relays from the transmitter to be tested. Depending on the relay options set in the Relay Options menu (see Relay Options), the relay will be open or closed.

Figure 156. Alarm/Fault Simulation Screen

Selecting an alarm level to simulate activates a confirmation screen.

Figure 154. Force Relays Screen
The Relay State screen shows the current relay configuration in the left column. The output can be controlled by changing the value in the column on the right.

Figure 157. Alarm/Fault Simulation Menu

Section 2 - Installation and Operation

XNX Universal Transmitter

A confirmation screen will appear.

Figure 158. Confirmation
Selecting will simulate the alarm from the transmitter. If the is selected, the simulation will be aborted.

Figure 162. Alarm/Fault Reset Screen
Select to reset the alarms, faults, or warnings generated by the simulation. If the is selected, the simulation continues.

Figure 159. Warning and Fault Simulation Screens
To simulate a Warning or Fault from the transmitter, select the appropriate icon from the menu.

Caution: Relays and LEDs will return to their initial states after simulations are completed unless faults and alarms are set to latching by the user.
Warning: After changing parameters with a handheld device, verify that the parameter settings are correct at the transmitter.

Figure 160. Fault Simulation Confirmation
A confirmation screen will appear. Select to simulate the warning or fault from the transmitter. If the is selected, the simulation will be aborted. Use Alarm/Fault Reset to reset alarms, faults, or warnings generated by the simulation.

Figure 161. Alarm/Fault Reset Screen

Section 2 - Installation and Operation

XNX Universal Transmitter

2.6.2 ? Information Menu

generated by the transmitter then return to the Alarm/Fault Status

screen. Select the switch to return to the Alarm/Fault Status

The Information Menu Displays the current status information for screen without resetting faults or alarms.

these parmeters:

Date & Time

Symbol

Description

Symbol

Description

Show Alarm/Fault Status

Show Gas Data

Show Date/Time

Show Range/Alarm Settings

Show Transmitter Data
?
Show Transmitter Status

Show Sensor Data

Show Sensor Status

Alarm/Fault Status

Show mA Level Settings Show Relay Settings Show Fieldbus Settings
? Show Event History

Figure 165. Date/Time Screens
The Date and Time screens display the date and time in the formats currently set on the transmitter. To set the time and date see Set Date & Time.
Transmitter Data

Figure 163. Alarm/Fault Status Screen
Select Alarm/Fault Status to display the Alarm/Fault Status screen allowing faults and alarms to be reset.

Figure 166. Transmitter Data Screen
Using the switches, the Transmitter Data displays the ID, part number, serial number, and version number of the firmware.

Figure 164. Alarm/Fault Status Screen
The `ü' will be highlighted. Select to reset all faults and alarms

Section 2 - Installation and Operation

Figure 167. Transmitter ID, Part Number and Serial Number Screens

XNX Universal Transmitter

? Transmitter Status

Figure 168. Transmitter Software, 4-20 Monitor and Option Version

Transmitter Data is also used to update the configuration of the

XNX when an option board is added or changed. To add the new

option, use the

switches to navigate to the Option Revision

screen, then swipe the magnetic switch on the front panel to

display the Accept New Option Screen. The screen will show

the current option (if any) and the newly installed option. Use the

switches to highlight the option then swipe the magnetic

switch on the front panel to accept the change. The transmitter

will update the part number of the unit. The new option will then

be operational.

Figure 170. Transmitter Status Screen
Transmitter Status displays information about the XNX unit including temperature, 4-20 mA output value, and supply voltage.
Figure 171. Transmitter Temperature and Supply Voltage Screens

Figure 169. Updating The XNX for Option Boards Added or Changed

Section 2 - Installation and Operation

XNX Universal Transmitter
Sensor Data

Gas Data

Figure 172. Sensor Data Screen
Sensor Data displays information about the transmitter including sensor type and sensor software revision.

Figure 176. Gas Settings Screen
Gas Data displays the current detectable gas as configured for the attached sensor.

Figure 173. Sensor Type and Software Screens
? Sensor Status

Figure 177. Gas Abbreviation and Full Scale Screens
Range/Alarm Settings

Figure 174. Sensor Status Screen
Sensor Status displays the temperature of the sensor attached to the transmitter. When equipped with an EC or mV sensor, sensor life is also displayed.

Figure 178. Range/Alarm Settings Screen
Range/Alarm Settings displays the currently configured alarm information.

Figure 175. Sensor Temperature Screen

Figure 179. Alarm Display Range Screen

Section 2 - Installation and Operation

XNX Universal Transmitter
mA Level Settings

Figure 180. mA Level Settings Screen
mA Level Settings shows the current values for mA output for Inhibit, Warning, and Overrange output.

Figure 183. HART Configuration Settings
Modbus displays the current address and communication data rate assigned to the transmitter.

Figure 181. mA Output Inhibit, Warning and Overrange Screens.
Fieldbus Settings

Figure 184. Modbus Configuration Display Screen
Relay Data
The Relay Menu is enabled only if the XNX transmitter is equipped with the optional relays.

Figure 182. Fieldbus Settings
Fieldbus Settings displays the current configuration of both HART and Modbus. To change the settings see Fieldbus Options. HART displays the current HART address assigned to the transmitter.

Figure 185. Relay Data Screen

Section 2 - Installation and Operation

Figure 186. Relay State Screens
86

XNX Universal Transmitter

Relay Data displays the current setting of the optional relays on the transmitter. To change the relay settings, see Relay Options.
? Event History
The Event History screen lists all events that are activated by the transmitter's settings. Five types of events are recorded: reset messages, alarm messages, warning messages, fault messages, and informational messages. The events are listed in chronological order beginning with the latest. Events can be displayed through five browsing modes:
· all events in order of occurrence · all events by hour · all events by day · only the alarm events, in order of occurrence · only the fault events, in order of occurrence The Event History screen groups events into chronological order (beginning from the unit's installation). Events can also be viewed by hour or by date. Events listed in hour order are grouped without regard to date. For example, all events that have occurred between noon and 1:00 o'clock since the transmitter's installation can be isolated. To view all events in hour order: 1. Use the magnetic wand to filter the display by hour. 2. Navigate through the displayed times.
To isolate all of the events from a specific day: 1. Use the magnetic wand to filter the display by day. 2. Navigate through the displayed days. 3. Filter the list by all events. This will display all events that
occurred on that day.
When the transmitter is configured with the Searchline Excel or

Searchpoint Optima, the data reported in the event will be the fault code from the Searchline Excel or Searchpoint Optima. The transmitter records up to 1280 events in a circular buffer. When event 1281 is recorded, the oldest event will be bumped from the list.
Note: The leading zeros of faults and warnings are not displayed in the event list; i.e., Fault 011 will be displayed as Fault 11.
Figure 187. Event History Screen
Figure 188. Chronological Event List
Figure 189. Chronological Event List by Hour

Section 2 - Installation and Operation

XNX Universal Transmitter
Figure 190. Chronological Event List by Day
Figure 191. Chronological Alarm List
Figure 192. Chronological Fault List
The transmitter is configured with five cable/conduit ports built into the housing for wiring and mounting sensors.

Section 2 - Installation and Operation

XNX Universal Transmitter
3 Calibration

XNX Universal Transmitter Technical Manual

XNX Universal Transmitter
3.1 Gas Calibration Menu
Each of the sensor technologies supported by the XNX® Universal Transmitter uses unique calibration procedures. The description provided illustrates the XNX interface with the sensor. The description does not replace the procedures found in each sensor's operating manual.
The Gas Calibration menu is used for Zero and Span calibration as well as functional gas testing (bump test). The Gas Calibration menu is accessed from the Main Menu.

3.2 Calibration
Warning: Do not use the XNX Universal Transmitter in oxygen-enriched atmospheres. Concentrations displayed will be adversely affected by oxygen depletion.
Caution: The calibration procedure should be performed only by qualified personnel. Take appropriate precautions with cylinders of flammable and toxic gases.

This table shows the Gas Calibration menu icons:

Symbol

Description

Gas Calibration

Bump Test

Calibrate mA Output

Soft Reset

Align Excel

The default calibration values for the "Calibration Required" diagnostic vary based on sensor type. This value can be reprogrammed in accordance with site requirements to ensure the highest level of safety. Correct operation of each sensor should be confirmed before each use by calibration with a certified test gas of known concentration before commissioning. See Section 6 - Specifications for calibration gas specifications.
Caution: Recalibrate if the temperature of local environment has varied by more than ±15°C from the temperature of calibration.

Figure 193. Gas Calibration Menu

Warning: Honeywell recommends periodic bump tests (every 30 days or in accordance with customer site procedures) to the sensor to insure proper operation and compliance with the functional safety rating of the installation.

Section 3 - Calibration

XNX Universal Transmitter
3.2.1 Zero and Span Calibration for XNX EC Sensors, mV Sensors, and Searchpoint Optima
Caution: Before initial calibration, allow the sensor to stabilize for 30 minutes after applying power. When in Zero and Span Calibration modes, the current output from the sensor is inhibited (default 2mA) to avoid false alarms.

3.2.2 Calibration Procedure
This section outlines the steps for calibrating the transmitter's attached sensors.
Note: The Zero Calibration procedure should be performed prior to the Span Calibration procedure.

Caution: For most sticky gases (e.g., HCl, Cl2) use PTFE tubing with short pieces of rubber tube for the final connection (due to the inflexibility of PTFE). This minimizes adhesion of the gas to the tube surface and allows more accurate measurement.
To calibrate the sensor, use an appropriate span gas cylinder, tubing, magnet, and calibration gas flow housing. Set the flow regulator to 300-375 ml/min for XNX EC sensors or 500 ±200 ml/ min for XNX mV sensors. A compressed gas cylinder (20.9%Vol oxygen) should be used to perform the zero calibration if the area where the sensor is located contains any residual amount of the target gas. If no residual gas is present, background air can be used to perform the zero calibration. Contact a Honeywell Analytics representative for details about suitable calibration kits. To calibrate the sensor, follow the procedure in Section 3.2.2.
Note: The oxygen sensor does not require a zeroing procedure. Background air (20.9%Vol oxygen) can be used to span the oxygen sensor in place of a compressed air cylinder (20.9%Vol oxygen). See Section 6.3.2 for other sensors.

1. If using a compressed gas cylinder, push the calibration gas flow housing onto the bottom of the sensor and apply the gas.
2. Access the Gas Calibration Menu.
Figure 194. Gas Calibration Menu
Note: The Gas Calibration menu is for both Zero Calibration and Span Calibration.
Zero Calibration

Note: EN performance standards require 10 minutes stabilization time for application of zero and span gas for performance-approved EC, mV, and IR sensors prior to calibration.

Sensor Reading at Current Settings
Figure 195. Zero Calibration Screen

Section 3 - Calibration

XNX Universal Transmitter
As the sensor detects the gas and the concentration increases, the values displayed will reflect the changing concentration. When the concentration values are stable, 3 minutes, select to allow the transmitter to calculate the zero adjustment. Selecting will return to the Gas Calibration menu.
Figure 196. Zero Calibration in Progress
3. If the zero calibration is successful, the transmitter will display the Zero Passed screen.
Figure 197. Zero Calibration Passed
Span Calibration If a Span Calibration is not required, select the to skip the Span Calibration and return to the Calibration menu.
4. When the Zero Calibration is complete, the Span Concentration screen appears. The gas concentration for the Span Gas Calibration can be changed. If the Span Calibration is skipped, the Gas Calibration screen displays.

Figure 198. Span Gas Concentration Screen
5. Enter the concentration of the span gas by selecting to choose the first digit. Use the switches to increment or decrement the values. Use to accept the new value and move to the next digit. Continue until all digits have been selected.

Sensor Reading at Current Settings

Calibration Gas Concentration

Figure 199. Span Calibration Screen
6. Apply the span gas. As the sensor detects the gas and the concentration increases, the values displayed will reflect the changing concentration. When the concentration values are stable, select to perform the span. The Span Calibration process also determines whether the sensor is within the proper range to accurately detect the target gas.
Selecting will cancel the span calibration and return to the Gas Calibration menu.
7. When the sensor has completed the calibration and the span algorithms have determined that it is within range, the Span Passed screen will appear.

Section 3 - Calibration

XNX Universal Transmitter

Figure 200. Span Passed Screen
If the calibration is not successful, the Span Failed screen will display. Selecting will return to the Span Concentration screen to begin the span calibration again. Selecting will exit Span Calibration and return to the Gas Calibration Menu.

3.2.3 Using the Calibration Cup
Refer to Figure 203 to attach the calibration cup:
1. Snap the calibration cup into the weather protector. The two protrusions on the cup fit into recesses in the weather protector.
2. Attach the hose from the gas cylinder to the calibration cup. Note that the cup's flow is unidirectional. There is an arrow on the bottom showing flow direction
3. Adjust the calibration flow rate1.

Figure 201. Span Calibration Failed
Once the Zero Gas and Span calibrations are completed successfully, the user will be prompted to:
· exit with inhibit off · exit with inhibit on, or · not exit.

weather protector
calibration cup

attach gas cylinder hose

Figure 202. Span Calibration Failed
Warning: When the XNX transmitter is placed in Inhibit Mode, alarms are silenced. This will prevent an actual gas event from being reported. Inhibit Mode must be limited to testing and maintenance only. Exit Inhibit Mode after testing or maintenance activities.
Section 3 - Calibration

Figure 203. Attaching the Calibration Cup
1 300-375 ml/min for XNX EC sensors, 500 ±200 ml/min for XNX mV sensors, unless otherwise directed
93

XNX Universal Transmitter

3.2.4 Zero and Span Calibration of XNX EC Hydrogen Sulfide (H2S) Sensors
Caution: Before initial calibration, allow the sensor to stabilize for 30 minutes after applying power. When in zero and span calibration modes, the current output from the sensor is inhibited (default 2mA) to avoid false alarms.
Caution: Recalibrate if the temperature of local environment has varied by more than ±15°C from the temperature of calibration.
Hydrogen Sulfide sensors can be affected by extreme humidity changes. A sudden increase in ambient humidity can result in a short-term positive drift in the instrument's reading. A sudden decrease in ambient humidity can result in a short-term negative drift in the instrument's reading. These are most likely to be noticed during calibration with dry or cylinder gas. When calibrating hydrogen sulfide cartridges, the following should be taken into account while following the procedure in Section 3.2.2.
1. To zero the sensor, use a compressed gas cylinder of 20.9%Vol oxygen (not nitrogen). Do not use background air.
If a span calibration is to be performed, the span calibration gas should be applied to the sensor immediately after the zeroing procedure. Do not allow the sensor to return to ambient air conditions.

Warning: Long-term exposure (> 20 minutes) to concentrations exceediing the full-scale range of the sensor can cause it to lose sensitivity. The ouput of the sensor may then decrease in value even though high levels of toxic gas are still present. Before re-calibrating the transmitter, verify the absence of gas.
3.2.5 705/705HT Calibrating
For complete calibration and configuration information, see the Type 705 Operating Instructions (P/N: 00705M5002).
3.2.6 Sensepoint/Sensepoint HT Calibrating
For complete calibration and configuration information, see the Sieger Sensepoint Technical Handbook (P/N: 2106M0502).
3.2.7 Calibrating the Searchpoint Optima Plus
Complete calibration and configuration information can be found in the Searchpoint Optima Plus Operating Instructions (P/N:2108M0501). If properly installed and maintained, the Searchpoint Optima Plus sensor will not require routine calibration. This is due to the inherent stability of the IR absorption process and the unit's fully compensated optical configuration.
1. From the Calibration menu, select the Gas Calibration option.

Section 3 - Calibration

Figure 204. Calibration menu
94

XNX Universal Transmitter
z
Figure 205. Gas Calibration menu
2. Perform a zero calibration. When concentration values are stable, select for XNX to calculate the zero adjustment Sensor Reading at Current Settings
Figure 206. Apply Zero Gas screen
3. Select to return to the Gas Calibration menu. If the zero calibration was successful, the transmitter will display the Zero Passed screen

4. Begin the span calibration by entering the concentration value of the calibration gas: Select to choose the first digit. Use +/- to increment/decrement values. Select to accept the value and move to the next digit. Use calibration cover P/N 2108B0272 to perform span calibration at a flow regulator of 1 LPM. (If a span calibration is not required, select to return to the calibration menu.)
Figure 208. Searchpoint Optima Plus
5. Continue until all three digits have been entered.

Figure 207. Zero Calibration screens
Section 3 - Calibration

Figure 209. Span Concentration screen
6. Apply the span gas. When concentration values are stable, select to calculate the span adjustment. This process also determines if the sensor is within range to accurately detect the target gas.
95

XNX Universal Transmitter
Sensor Reading at Current Settings

Calibration Gas Concentration

Figure 210. Span adjustment calculation
7. Select to return to the Gas Calibration menu. If the calibration is not successful, the Span Failed screen will be displayed.

Figure 212. Span Passed screen
8. Exit the Calibration Menu. After the zero and span calibrations have been successfully completed, the user will be prompted to: · Exit and turn alarm and fault inhibit off, · Exit and leave the transmitter in inhibit mode. or · Not exit

Figure 211. Span Failed screen
Select to return to the Span Concentration screen to repeat the span calibration. Select to exit Span Calibration and return to main Calibrate screen. If Span Calibration is exited, the previous calibration values will be used. Select to return to the Span Concentration screen.
If the calibration is successful, the Span Passed screen will be displayed.

Figure 213. Calibration exit options
Warning: When the XNX transmitter is placed in Inhibit Mode, alarms are silenced. This will prevent an actual gas event from being reported. Inhibit Mode must be limited to testing and maintenance only. Exit Inhibit Mode after testing or maintenance activities.

Section 3 - Calibration

XNX Universal Transmitter
3.2.8 Zero and Span Calibration for MPD Sensors

Caution: Extended or frequent exposure to elevated concentrations of combustible gases may affect sensor sensitivity. Verify sensor performance by frequent calibration.
Caution: Before initial calibration allow the sensor to stabilize for 30 minutes after applying power. When in zero and span calibration modes, the current output from the sensor is inhibited (default 2mA) to avoid false alarms.
The Gas Calibration menu is for both zero and span calibrations. This section describes how to calibrate MPD flammable sensors fitted to the transmitter. The calibration adjustments are made on the transmitters display. Gassing is performed at the sensor, which may be locally or remotely located.
The following equipment is required: · Flow housing (P/N: 1226A0411) · Test gas · Regulator

Figure 214. Flow Housing
3. Reverse the cap removal procedure. Figure 215 shows the flow housing accessory fitted to the MPD.
Figure 215. MPD with Flow Housing
4. Connect the flow housing (using either gas pipe) to the regulated cylinder containing a known concentration of the target gas at approximately the sensor alarm point, e.g., 50% LEL methane in air.

Note: Zero gas and Span gas should be at about the same humidity levels to avoid erroneous cell responses.
1. At the MPD, remove the weatherproof cap, if equipped. 2. Fit the flow housing onto the MPD.

Warning: As some test gases are hazardous, exhaust the flow housing outlet to a safe area.
5. Follow the procedure in Section 3.2.1 for both zero and span calibrations.
6. Apply the target gas to the sensor. Pass the gas through the flow housing at a rate of 300-375 ml/min for XNX EC sensors or 500 ±200 ml/min for XNX mV sensors.

Section 3 - Calibration

XNX Universal Transmitter
Sensors should be calibrated at concentrations representative of those to be measured. It is always recommended that the sensor be calibrated with the target gas it is to detect.
Caution: Responsibility for identifying and recording a sensor calibration made with a different gas rests with the user. Refer to local regulations where appropriate.
Ensure that the sensor and the vicinity around it is clear of all traces of the calibration gas before continuing. This is to avoid triggering spurious alarms. If calibration fails at any point, discard the cartridge and replace it with a new one (see Section 4.1) . 7. Remove the test equipment, refit the weatherproof cap to the sensor (if previously removed for the test), and return the system to normal operation.
3.2.9 MPD Flammable Sensor Operational Life
The pellistors used in flammable gas sensors can suffer from a loss of sensitivity when in the presence of poisons or inhibitors, e.g., silicones, sulfides, chlorine, lead, or halogenated hydrocarbons. The pellistors are poison resistant to maximize the operational life of the flammable sensor. The typical operating life of the pellistor sensor used in the MPD-CB1 is 60 months.

3.2.10 XNX EC Sensor Operational Life
The typical life of a toxic gas sensor dependst on the application, frequency, and amount of gas exposure. Under normal conditions (3 month visual inspection and 6 month test/recalibration) the toxic sensor has an expected life equal to or greater than these lifetimes:
· 12 months for ammonia, hydrogen chloride, and hydrogen fluoride sensors (see further ammonia information below).
· 24 months for chlorine dioxide, oxygen, and other toxic sensors.
See Section 4 - Maintenance for sensor replacement procedures.
Caution: Oxygen deficient atmospheres (less than 6%V/V) may result in inaccurate readings and performance.
Ammonia electrochemical cells are reliable and suitable for applications where no background concentration of ammonia exists. Under these conditions the cells are expected to operate for 12 to 24 months. These ammonia cells are of the consumptive type. Their operating life can be adversely affected by continuous or excessive exposure to ammonia, or by prolonged exposure to high temperatures and moisture. To ensure continued detection availability, bump test the sensors regularly and implement an appropriate cell replacement program.

Section 3 - Calibration

XNX Universal Transmitter

3.3 Functional Gas Testing (Bump Testing)
Figure 216. Bump Test Menu
Warning: Exposure to desensitizing or contaminating substances or concentrations causing operation of any alarm may affect sensor sensitivity. Following such events, it is recommended to verify sensor performance by performing a functional gas test (bump test).

2. If the difference between the reading and the applied gas concentration is outside the acceptable limits for the application, follow the procedures for zeroing and calibrating the sensor (see Section 3.2.1).
3. If the reading is still inaccurate, replace the sensor (see Section 4.1).
Once the bump test is completed successfully, the transmitter will exit the calibration procedure. Before returning to the Gas Calibration menu, the user will be prompted to exit and turn alarm and fault inhibit off, exit and leave the transmitter in inhibit mode, or not exit.

It is recommended that the sensor be tested frequently to ensure that the system is operating properly. Different sensor types may require more frequent maintenance, depending on the environmental conditions and the gases present. The weatherproof cover has a spigot for attaching tubing from a gas cylinder. This may be used for a simple functional (bump) test of the sensor. However, environmental conditions may make this unsuitable for some gas typesor applications. It is the responsibility of the user to ensure suitability of this method for each application.
1. When bump gas is applied to the sensor, the bump test screen displays the current reading of the sensor and the peak reading that occurred during the bump test.
Peak Reading

Caution: Exiting before the gas level has fallen below the level of Alarm 1 will cause the transmitter to go into alarm.
Figure 218. Exiting the calibration procedure

Current Sensor Reading

Full Scale

Alarm Levels Figure 217. Bump Test Screen

Section 3 - Calibration

XNX Universal Transmitter

3.4 Calibrate mA Output
Use Calibrate mA Output to adjust the milliamp output to provide the correct output levels at peripheral devices connected to the transmitter.

Note: Calibrated mA output is required for proper operation of internal diagnostics.

An F165 fault will be reported if the 4-20 mA calibration fails.
3.5 Align Excel (Searchline Excel)

Figure 219. Calibrate mA Output Menu
To adjust the 4mA output, use the switches to increase or decrease the output, then use to accept the new value and move to the 20mA setting or to discard the selection and return to the previous menu.

Figure 220. Calibrate mA Output Screens
During installation, an mA meter must be connected in series with the 4-20 mA loop as shown below.
Remote end

XNX

4-20 mA loop

mA Meter

4-20 mA loop

Control Equipment R load

Figure 222. Align Excel Menu
For detailed information on Aligning the Searchline Excel, see the Searchline Excel Technical Manual (P/N: H-MAN0530-V1).

Signal Strength Reference Value

Alignment Bargraph

100 Signal Strength Target
Figure 223. Align Excel Screen
Align the unit using the information found in the Searchline Excel manual. As the alignment is performed, the transmitter display will indicate the signal strength in the form of a bar graph. Align the Excel until the signal strength bar graph reaches or exceeds 1.00 as shown on the display.

Figure 221. 4-20 mA loop with mA meter

Section 3 - Calibration

100

XNX Universal Transmitter
3.6 Soft Reset
(Searchline Excel and Searchpoint Optima Plus only)
Figure 224. Soft Reset Menu
For transmitters connected to a Searchline Excel or Searchpoint Optima Plus sensor, the Soft Reset sends these infrared devices a signal to restart the sensor.
Figure 225. Soft Reset Sensor Screen

Section 3 - Calibration

101

XNX Universal Transmitter

Section 3 - Calibration

102

XNX Universal Transmitter
4 Maintenance

XNX Universal Transmitter Technical Manual

103

XNX Universal Transmitter
Warning: When servicing or replacing sensors, reduce the risk of ignition of hazardous atmosphere by declassifying the area or disconnecting the equipment from the supply circuit before opening the sensor enclosure. Keep the assembly tightly closed during operation.
Warning: Take care when handling sensors as they may contain corrosive solutions. Do not tamper or in any way disassemble the sensor cell. Do not expose to temperatures outside the recommended range. Do not expose the sensor to organic solvents or flammable liquids.
Warning: At the end of their working lives, sensors must be disposed of in an environmentally safe manner, in accordance with local waste management requirements and environmental legislation. Sensors should NOT be incinerated as they may emit toxic fumes.
Warning: Verify all outputs, including display, after installation, after service events, and periodically to ensure the safety and integrity of the system.

4.1 MPD Sensor Cartridge Replacement
Using Figure 226 as a guide, follow this procedure:
1. Verify that the label on the new sensor is the correct gas type.
2. Remove power from the transmitter. 3. Unscrew the weatherproof cover (if equipped), loosen the
retainer locking screw, and unscrew the sensor retainer. 4. Remove the old sensor by pulling without twisting. 5. Slide the replacement cell into the MPD body taking care
to align the tab with the alignment slot, then press the cell firmly to seat it into the body. 6. Refit the sensor retainer, tighten the locking screw and refit the weatherproof cover (if equipped). 7. Recalibrate the sensor following the procedures in Section 3.2.2.
Internal O-ring (critical to performance times)
Cell Alignment Slot

Caution: The following procedure should be followed carefully and performed only by suitably trained personnel. A fault condition will be signaled by the sensor if it is removed with the unit under power.
Note: If the power-on self-test was skipped during maintenance activities, restart the transmitter.

Sensor Cell IR or Cat Bead Sensor Retainer and Locking Screw
Figure 226. Removing the Plug-in Sensor

Section 4 - Maintenance

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XNX Universal Transmitter
4.2 XNX® EC Sensor Cartridge Replacement

Caution: For toxic sensors, remove the shorting clip from the bottom of the sensor prior to installation. No shorting clip is provided with oxygen sensors.

The serviceable sensor allows replacement of the cell inside the sensor. The sensor cell can be replaced with a cell of the same type or changed to detect a different target gas. Both procedures follow.
When replacing oxygen (O2) sensor cells, the initial warm-up time is between 10 and 15 minutes. This warm-up is required only after sensor cell replacement.
4.2.1 Replacing with the Same Cartridge Type
To replace the cell follow this procedure:
1. Unscrew the weatherproof cover, loosen the sensor retainer locking screw, and unscrew the sensor retainer.
2. Remove the old sensor by pulling without twisting. 3. Unscrew the sensor cap. 4. Remove the old cell by pulling without twisting. 5. Verify that the new cell is the same type as the old one. 6. Plug the new cell into the sensor, taking care to align the
sensor pins with the connector holes in the PCB. 7. Refit the sensor retainer, tighten the locking screw, and
refit the weatherproof cover. 8. Sensor warm-up will begin and the XNX display will
alternate between two screens: "Fault 151" and "WARM."

Figure 227. Sensor screens during warmup
9. Follow the procedure to accept the new sensor in Accept New Sensor Type.
10. Recalibrate the sensor following the procedures in Section 3.2.1.

Transmitter

New cell

Old cell Sensor Cap

Old Sensor
3
2

Sensor Retainer & Locking Screw

New Sensor
4
5

Sensor Cell Replacement

EC Sensor Removal Figure 228. XNX EC Sensor Cell Replacement

Section 4 - Maintenance

105

XNX Universal Transmitter
4.2.2 Replacing with a Different Cartridge Type
To replace the cell with a cell for a different gas, follow this procedure:
1. Unscrew the weatherproof cover, loosen the sensor retainer locking screw, and unscrew the sensor retainer.
2. Remove the old sensor by pulling without twisting. 3. Unscrew the sensor cap. 4. Remove the old cell by pulling without twisting. 5. Plug the new cell into the sensor, taking care to align the
sensor pins with the connector holes in the PCB. 6. Refit the sensor, taking care to align the sensor pins with
the connector. 7. Refit the sensor retainer, tighten the locking screw, and
refit the weatherproof cover. 8. The transmitter will enter sensor warm-up mode. However,
due to the change in sensor cell type, the transmitter will not enter monitor mode until the unit has been reconfigured. The display will show the sensor warm-up screen:

and the original cell is no longer recognized. This fault condition will clear after the transmitter has been properly reconfigured.
The reconfiguration of the XNX for a new cell/target gas is achieved through Accept New Sensor Type. Recalibrate the sensor following the procedures in Section 3.2.2.

Figure 229. Sensor screens during warmup

Note the message "G:TBV:O2". "TBV" indicates that the operator must reconfigure the transmitter to recognize the new sensor cell. "O2" will reflect the target gas of the
new cell, i.e., H2S, NO2, etc. The display will also alternate
the warm-up screen with the Fault 151 screen. This
indicates that the communication between the transmitter

Section 4 - Maintenance

106

4.2 XNX EC Sensor Cartridge Replacement

XNX Universal Transmitter
5 Warnings and Faults

XNX Universal Transmitter Technical Manual

107

XNX Universal Transmitter

5.1 Warning Messages

Warning W001 W002 W003
W005
W006
W007

Description
XNX® 24 VDC Supply Bad

Applicable Sensors

Latching / Non-Latching

All

Non-latching

XNX Temperature Error

All

Non-latching

Simulated Warning/Fault

All

Non-latching

Sensor Temperature Error

Optima

Non-latching

Sensor Temperature Error

Excel

Non-latching

Sensor Temperature Error

ECC

Non-latching

Negative Drift ECC, mV Non-latching

Negative Drift

Optima, Excel

Non-latching

Calibration Required

All

Non-latching

Frequency of Diagnostic
2 seconds
2 seconds

Event History Data

Action For Resolution

XNX supply voltage x1000
XNX temperature (Celsius)

Check wire of 24V power supply to XNX as well as power supply operation.
Check location for heat sources. Fit with sunshade or other protection. Change location of XNX. Check temperature in Info->Transmitter Status to ensure temperature is being measured properly.

Enabled by user 0

Performing an alarm/fault reset will clear all simulation.

XNX polls sensor every 2 seconds, diagnostic frequency controlled by sensor

Sensor fault or warning code (Note 4)

Check location for heat sources. Fit with sunshade or other protection. Change location of XNX. Check temperature in Info->Sensor Status to ensure temperature is being measured properly.

XNX polls sensor every 2 seconds, diagnostic frequency controlled by sensor

Sensor fault or warning code (Note 4)

Check location for heat sources. Fit with sunshade or other protection. Change location of XNX. Check temperature in Info->Sensor Status to ensure temperature is being measured properly.

2 seconds

Sensor temperature (Celsius)

Check location for heat sources. Fit with sunshade or other protection. Change location of XNX. Check temperature in Info->Sensor Status to ensure temperature is being measured properly.

2 seconds

Raw gas concentration of sensor

Check sensor location for external interference. Perform zero calibration. If problem persists after zero calibration and no interference exists, replace sensor.

XNX polls sensor every 2 seconds, diagnostic frequency controlled by sensor

Sensor fault or warning code

Check sensor location for external interference. Perform zero calibration. If problem persists after zero calibration and no interference exists, replace sensor.

2 seconds

Number of days remaining until calibration expires, negative = number of days expired

Time since the last span calibration has exceeded a defined limit. Per-
forming a successful span calibration will clear the condition. The limit is the user-defined calibration interval. W007 can be disabled by setting the
calibration interval to 0.

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108

XNX Universal Transmitter

Warning W009
W010
W011 W012 W013 W014

Description

Applicable Sensors

Latching / Non-Latching

Sensor 24 VDC Optima,

Supply Bad

Excel

Non-latching

Sensor Path Obscured

Optima

Non-latching

Beam Block Excel

Non-latching

Sensor Internal Lamp Issue

Optima Latching

Excessive Float

Optima, Excel

Non-latching

Sensor Loop Failure, (Sensor is losing/ has lost mA output signal. These are detected by Optima and Excel.
Sensor Real Time Clock issue

Optima, Excel
Excel

Latching Non-latching

Frequency of Diagnostic

Event History Data

Action For Resolution

XNX polls sensor every 2 seconds, diagnostic frequency controlled by sensor

Sensor fault or warning code (Note 4)

Check wire of 24V power supply to XNX as well as power supply operation. Also check wiring between XNX and Optima/Excel.

XNX polls sensor every 2 seconds, diagnostic frequency controlled by sensor

Sensor fault or warning code (Note 4)

Check location for external interference. Check sensor for dirty windows.

XNX polls sensor every 2 seconds, diagnostic frequency controlled by sensor

Sensor fault or warning code (Note 4)

Check location for external interference or obstructions in the IR path. Check sensor for dirty windows. Check Excel alignment.

XNX polls sensor every 2 seconds, diagnostic frequency controlled by sensor

Sensor fault or warning code (Note 4)

Remove and return to Honeywell for repair.

XNX polls sensor every 2 seconds, diagnostic frequency controlled by sensor

Sensor fault or warning code (Note 4)

Check sensor location for external interference, check sensor for operation and re-zero where appropriate.

XNX polls sensor every 2 seconds, diagnostic frequency controlled by sensor

Sensor fault or warning code (Note 4)

Check that supply voltage is stable. Check wiring between Optima/ Excel and XNX. Check loop impedance of wiring. Check that switches S3 and S4 are set correctly. If the switch settings need to be changed, power down the transmitter before changing the switch settings. Once the problem has been resolved, a Soft Reset must be performed for the Calibration menu to clear W013.

XNX polls sensor every 2 seconds, diagnostic controlled by sensor

Sensor fault or warning code (Note 4)

Reset "date and time" in Excel, re-cycle Excel power and confirm "date and time." If not retained, remove and return to Honeywell for repair.

Section 5 - Warnings/Faults

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XNX Universal Transmitter

Warning W015
W016 W018 W019 W020 W021 W022

Description

Applicable Sensors

Latching / Non-Latching

Sensor Internal Failure

Optima, Latching and Non-

Excel

latching

Sensor has an internal soft- Excel ware error

Latching

Sensor Installation Not Complete

Excel

Non-latching

General Diag- Optima,

nostics

Excel

Non-latching

Sensor Internal 5V Power Supply Defect

Excel

Non-latching

Forced mA Timeout

All

Latching

Forced Relay Timeout

All

Latching

mV Sensor

Calibration

Needed

Latching

Frequency of Diagnostic

Event History Data

Action For Resolution

XNX polls sensor every 2 seconds, diagnostic frequency controlled by sensor

Sensor fault or warning code (Note 4)

Remove and return to Honeywell for repair.

XNX polls sensor every 2 seconds, diagnostic frequency controlled by sensor

Sensor fault or warning code (Note 4)

Cycle Excel power and confirm "fault cleared." If not, replace sensor.

XNX polls sensor every 2 seconds, diagnostic frequency controlled by sensor

Sensor fault or warning code (Note 4)

Check Excel alignment. Perform a zero calibration.

XNX polls sensor every 2 seconds, diagnostic frequency controlled by sensor

Sensor fault or warning code (Note 4)

Check sensor connections, check sensor operation, fit replacement sensor, replace personalty board.

XNX polls sensor every 2 seconds, diagnostic frequency controlled by sensor

Sensor fault or warning code (Note 4)

Remove and return to Honeywell for repair.

1 second

Forced mA

Indicates that a forced mA condition was left on for more than 15 minutes. No action required as mA operation will be returned to normal automatically.

1 second

Forced relay status, 1=Alarm1 on, 2=Alarm2 on, 4=Fault on

Indicates that a forced relay condition was left on for more than 15 minutes. No action required as relay operation will be returned to normal automatically.

When user changes sensor type or gas

1=new sensor, 2=changed personality, 3=changed gas

Generated after accepting a new mV sensor or changing the mV sensor type or changing the mV gas selection. This is a warning to user that a span calibration should be performed. If a span calibration is not performed, the default calibration values will be used.

Section 5 - Warnings/Faults

110

XNX Universal Transmitter

Warning W023
W024 W025

Description

Applicable Sensors

Latching / Non-Latching

Low Optical Sample Signal

Excel

Non-latching

Reflex Failure Warning

ECC

Safety variable fail warning

All

Latching Latching

Frequency of Diagnostic

Event History Data

Action For Resolution

XNX polls sensor every 2 seconds, diagnostic frequency controlled by sensor

Sensor fault or warning code (Note 4)

Check location for external interference or obstructions in the IR path. Check sensor for dirty windows. Check Excel alignment. Check Beam Block Low Signal Percentage setting in the transmitter.

Dependent on sensor, typically 8 hours; Once fault 0 is detected: every 15 minutes

ECC sensor is nearing end of life. Replace sensor.

2 seconds

Note 3

Contact Honeyewell Analytics Service Department.

Section 5 - Warnings/Faults

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XNX Universal Transmitter

NOTES Note 3:

Subtypes

Decimal 1 2 4

Fault 2 Event Bits
Fault 3 Event Bits

8
16 32 64 128 256 512 1024 2048 4096 8192 16384 32768
1

Description CRC error in safety critical RAM block Error reloading safety critical RAM block from EEPROM Error loading data from Personality board
Excel signal level has been below the low signal level threshold for at least 24 hours
Excel beam blocked Personality board error code > 0
Option board error code > 0 IR mA input > 1 mA and < 3.4 mA
IR mA input < 1.0 mA IR forced 10 mA not within +/-1 mA gains from PGA don't match local copy
error reading or writing EEPROM ECC reflex failure RAM test failure
Program memory CRC failure Op code test failure
Interrupt integrity test failure

Note 4:
Optima and Excel fault and warning codes are displayed in the Event History data field.

Section 5 - Warnings/Faults

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XNX Universal Transmitter

5.2 Fault Messages

Fault F101 F103 F104 F105 F106 F107 F108 F109 F110
F111

Description

Applicable Sensors

Unexpected Sensor Reset

All

XNX Temperature Error

All

XNX 24 VDC Supply Bad

All

3.3VDC Supply

Bad on XNX, personality board, or

All

option board

XNX Real Time Clock Failure

All

XNX Internal Failure (RAM, ROM, All EEPROM, Opcode)

XNX mA Output Loop Failure

All

Simulated Warning/Fault
Sensor software mismatch

All Optima

Negative Drift

ECC, mV

Negative Drift; may indicate a failed IR sensor

Optima, Excel

Latching / NonLatching

Frequency of Diagnostic

Event History Data

Action For Resolution

Non-latching Non-latching Non-latching

ECC & mV: main loop x2; Optima & Excel: 2 seconds
2 seconds
2 seconds

Note 2. Optima or Excel: Sensor fault or warning code (Note 4)
XNX temperature (Celsius)
XNX supply voltage x1000

If repeated, check supply voltage, check cable loop impedance, check terminal connections
Check location for heat sources. Fit with sunshade or other protection. Change the transmitter's location. Check temperature in Info>Transmitter Status to ensure temperature is being measured properly. Check the wire of the 24V power supply to the transmitter and the power supply operation.

Non-latching

2 seconds

1=XNX, 2=Personality board, 3=Option board

Check Transmitter Status

Non-latching

2 seconds

Non-latching except for EEPROM error

At power up and 8 hours

Latching

2 seconds

Total seconds since Jan 1, 1970

Either clock was incorrectly set or the battery for the clock has failed. Note: the clock will stop running on January 1, 2036.

Note 3

Contact Honeywell Analytics' Service Department.

mA output error (measured mA - set mA)

Check wiring of mA output from XNX. Check that switches S1 and S2 are set correctly. Note that if F108 is not resolved quickly, an F149 (Internal Communication Failure - mA) will also be generated. When the cause of F108 is resolved, both the F108 and F149 will be cleared.

Non-latching Latching Non-latching
Non-latching

Enabled by user
Only checked at power up

0
Sensor firmware version x10

2 seconds

Raw gas concentration of sensor

XNX polls sensor every 2 seconds, diagnostic frequency controlled by sensor

Sensor fault or warning code

Performing an alarm/fault reset will clear all simulation.
Contact Honeywell Analytics' Service Department.
Check sensor location for external interference. Perform zero calibration. If problem persists after zero calibration and no interference exists, replace sensor.
Check sensor location for external interference. Perform zero calibration. If problem persists after zero calibration and no interference exists, replace sensor.

Section 5 - Warnings/Faults

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XNX Universal Transmitter

Fault

Description

Applicable Sensors

F112

Sensor 24 VDC Supply Bad

Optima, Excel

F113

Sensor Internal 5V Power Supply Defect

Excel

F114

Sensor Internal Lamp Issue

Optima

F116

Sensor Internal Failure

Optima, Excel

F117

Sensor Loop Failure, (Sensor is losing/has lost mA output signal. These are detected by Optima and Excel, F161 is detected by XNX and will usually occur before F117.)

Optima, Excel

F118

Sensor Real Time Clock issue

Excel

Latching / NonLatching
Non-latching Non-latching Latching Non-latching
Latching
Non-latching

Frequency of Diagnostic

Event History Data

XNX polls sensor every 2 seconds, diagnostic frequency controlled by sensor

Sensor fault or warning code (Note 4)

XNX polls sensor every 2 seconds, diagnostic frequency controlled by sensor

Sensor fault or warning code (Note 4)

XNX polls sensor every 2 seconds, diagnostic frequency controlled by sensor

Sensor fault or warning code (Note 4)

XNX polls sensor every 2 seconds, diagnostic frequency controlled by sensor

Sensor fault or warning code (Note 4)

XNX polls sensor every 2 seconds, diagnostic frequency controlled by sensor

Sensor fault or warning code (Note 4)

XNX polls sensor every 2 seconds, diagnostic controlled by sensor

Sensor fault or warning code (Note 4)

Action For Resolution
Check the wire of the 24V power supply to the transmitter and the power supply operation. Also check the wiring between the transmitter and the Optima/Excel.
Remove and return to Honeywell for repair.
Remove and return to Honeywell for repair.
Remove and return to Honeywell for repair.
Check that supply voltage is stable. Check wiring between Optima/Excel and the transmitter. Check loop impedance of wiring. Check that switches S3 and S4 are set correctly. If the switch settings need to be changed, power down the transmitter before changing the switch settings. Once the problem has been resolved, a Soft Reset must be performed for the Calibration menu to clear F117.
Reset "date and time" in Excel, recycle Excel power, and confirm "date and time. If not retained, remove and return to Honeywell for repair.

Section 5 - Warnings/Faults

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XNX Universal Transmitter

Fault

Description

F119

Cartridge Internal Electrical Failure

F120 No Sensor

F121

Wrong Cartridge, error loading sensor parameters

F122

General Diagnostics

Sensor Temperature Error

F123

Sensor Temperature Error

F125

Calibration Required

Applicable Sensors

Latching / NonLatching

ECC, mV Non-latching

ECC, mV, Optima, Non-latching Excel

All

Non-latching

Optima, Excel

Non-latching

Optima Non-latching

Excel

Non-latching

ECC

Non-latching

All

Non-latching

Frequency of Diagnostic

Event History Data

XNX polls sensor every 2 seconds, diagnostic frequency controlled by sensor

Note 5

2 seconds

Note 2

At power up and when cartridge is 0 changed

XNX polls sensor every 2 seconds, diagnostic frequency controlled by sensor

Sensor fault or warning code (Note 4)

XNX polls sensor every 2 seconds, diagnostic frequency controlled by sensor

Sensor fault or warning code (Note 4)

2 seconds

Sensor temperature (Celsius)

2 seconds

Number of days remaining until calibration expires, negative = number of days expired

Action For Resolution
Check cartridge connections, check sensor operation, fit replacement cartridge, replace personality board.
Indicates a loss of communication with the sensor. Check that the sensor type indicated in the part number matches the installed hardware. Check the wiring between ECC sensors or Optima/Excel and the XNX.
Contact Honeywell Analytics' Service Department.
Check sensor connections, check sensor operation, fit replacement sensor, replace personalty board.
Check location for heat sources. Fit with sunshade or other protection. Change location of the transmitter. Check temperature in Info->Sensor Status to ensure temperature is being measured properly.
Check location for heat sources. Fit with sunshade or other protection. Change location of the transmitter. Check temperature in Info->Sensor Status to ensure temperature is being measured properly.
Check location for heat sources. Fit with sunshade or other protection. Change location of XNX. Check temperature in Info->Sensor Status to ensure temperature is being measured properly.
Time since the last span calibration has exceeded a defined limit. Performing a successful span calibration will clear the condition. The limit is the maximum calibration interval.

Section 5 - Warnings/Faults

115

XNX Universal Transmitter

Fault F126
F127
F128
F130 F133 F143 F145 F146 F148

Description
Sensor Path Obscured
Beam Block
Sensor Installation Not Complete
Option Communication Failure Not used Stabilization Timeout
Reflex Failure
Unknown Sensor Failure Internal option board hardware failure

Applicable Sensors Optima
Excel
Excel
All
All ECC Optima, Excel All

Latching / NonLatching
Non-latching
Non-latching
Non-latching
Non-latching
Latching Non-latching Non-latching Non-latching

Frequency of Diagnostic

Event History Data

XNX polls sensor every 2 seconds, diagnostic frequency controlled by sensor

Sensor fault or warning code (Note 4)

XNX polls sensor every 2 seconds, diagnostic frequency controlled by sensor

Sensor fault or warning code (Note 4)

XNX polls sensor every 2 seconds, diagnostic frequency controlled by sensor

Sensor fault or warning code (Note 4)

2 seconds

Option module ID: 0=None, 1=FoundationTM Fieldbus, 2=Modbus®, 3=Relay

2 seconds
Dependent on sensor, typically 8 hours; Once fault is detected: every 15 minutes
2 seconds

Warm up time (seconds x100)
nA/mV
Sensor fault or warning code (Note 4)

2 seconds

Option board error status (Note 6)

Action For Resolution
Check location for external interference. Check sensor for dirty windows.
Check location for external interference or obstructions in the IR path. Check sensor for dirty windows. Check Excel alignment.
Check Excel alignment. Perform a zero calibration.
Check that installed option matches the option indicated in the XNX part number. If the option has been changed, the new option must be set up in Information->Transmitter Data as described in the manual. Cycle power, contact Honeywell Analytics' Service Department if problem persists. ECC sensor is no longer functioning properly. Replace sensor.
Contact Honeywell Analytics' Service Department. Contact Honeywell Analytics' Service Department.

Section 5 - Warnings/Faults

116

XNX Universal Transmitter

Fault F149 F150

Description

Applicable Sensors

Internal 4-20 mA

monitoring circuit communication

All

failure

mA Output Monitor Communications All Watchdog Error

F151

Sensor Module Type Changed

ECC

F152

Option Module Configuration Error

All

F153

Signal/Data mismatch error on IR personality

Optima, Excel

F154

mA Input Diagnos- Optima,

tic Failure

Excel

F155

Generic mA Sensor Generic

Type Error

F156 F157

mV Current Control Failure

Sensor Drift Fault ECC, mV

Sensor/Personal-

F158 ity Part Number

All

mismatch

Latching / NonLatching
Non-latching Non-latching Non-latching
Latching Non-latching Latching
Non-latching Non-latching Non-latching Non-latching

Frequency of Diagnostic

Event History Data

Action For Resolution

3.366 seconds

Contact Honeywell Analytics' Service Department.

138 us

Communication error count

Contact Honeywell Analytics' Service Department.

2 seconds
Only at powerup or every 125 ms when no option board detected
2 seconds
5 minutes after power up and then every 8 hours
2 seconds
Main loop x16 2 seconds "ECC & mV: main loop x2; Optima & Excel: 2 seconds"

Module type: 0=None, 1=ECC, 2=mV, 3=Excel, 4=Optima, 5=Generic mA Option module ID: 0=None, 1=Foundation Fieldbus, 2=Modbus, 3=Relay
Digital sensor reading
Input mA
Input mA
constant current A/D input mV Current baseline
Entire personality part #

For ECC: Perform Accept New Sensor function, if problem persists contact Honeywell Analytics' Service Department. For others, contact Honeywell Analytics' Service Department.
Confirm option properly installed, reconfigure unit.
Check wiring to Optima/Excel. In particular, check the white wire between XnX and Optima/Excel. Note: power must be cycled to reset F153 after correcting the cause.
Contact Honeywell Analytics' Service Department.
Indicates that mA input from sensor is less than 3 mA. Check wiring between XNX and sensor. Also check the switches S3 and S4 are set correctly. If the switch settings need to be change, power down the XNX before changing the switch settings. If wiring and switches are okay, replace sensor. Check that correct mV sensor type is selected. Check wiring between XNX and sensor. If sensor type and wiring are okay, replace sensor. Perform zero calibration. If problem persists, replace sensor.
Check that installed option matches the option indicated in the XNX part number, check wiring to Optima/Excel.

Section 5 - Warnings/Faults

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XNX Universal Transmitter

Fault

Description

Applicable Sensors

F159

Option Part Number Mismatch

All

F160

Hardware Diagnostic Failure

ECC, mV

Latching / NonLatching
Non-latching
Non-latching

Frequency of Diagnostic
Only at powerup or every 125 ms when no option board detected
Main loop x2

F161

mA Input Indicates Optima,

Fault

Excel

Non-latching

1 second

F162 F163

Error reloading safety critical RAM All block

Interrupt integrity fault

All

F164 mV Sensor failure mV

Non-latching Non-latching Latching

2 seconds Main loop 1 second

Event History Data
Entire option part # Gain1 high byte, Gain2 low byte
Input mA
Note 3 Note 3 mV bridge voltage or bridge current that caused fault

Action For Resolution
Check that installed option matches the option indicated in the XNX part number, check wiring to Optima/Excel.
Replace defective EC cartridge or mV personality board. Indicates mA input from Optima/Excel is below 1 mA, indicating a fault in the sensor. Any other fault will also trigger this fault, so check for additional faults in event history to determine specific issue. If no other faults indicated, check wiring between Optima/Excel and XNX. Also check that switches S3 and S4 are set correctly.
Contact Honeywell Analytics' Service Department.
XNX will reset if more than 600,000 successive errors occur.
Indicates that the sensor was changed or is bad. If the fault will not clear, replace the sensor.

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Fault

Description

F165

mA Calibration failure

Applicable Sensors

Latching / NonLatching

Frequency of Diagnostic

all

Latching

2 seconds

Event History Data

Action For Resolution

DAC: Digital to Analog Converter (4-20 mA output)

ADC: Analog to Digital Converter (4-20 mA internal feedback)

0 OK 1 DAC 4 mA point is too low 2 DAC 4 mA point is too high 4 DAC 20 mA point is too low 8 DAC 20 mA point is too high 16 ADC 4 mA point is too low 32 ADC 4 mA point is too high 64 ADC 20 mA point is too low 128 ADC 20 mA point is too high

Indicates that 4-20 mA calibration failed and discarded. Events history parameter indicates which calibration point has failed. If 4-20 mA calibration fails with F165, no changes take place so the 4-20 mA calibration output stays as it was. Check 4-20 mA loop resistance. Repeat 4-20 mA calibration. The fault clears itself after a successful 4-20 mA calibration.

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NOTES Note 2:
Decimal 1 2 4 8 16 32 64
128 256 512 1024 2048 4096 8192 16384 32768

Spi Event Bits Description
SPI1 Starting TX SPI1 transmitting falling clock edge, 0 = rising edge SPI1 port open, 0 = closed SPI1 no response SPI1 ECC no response SPI1 missing data Not used SPI3 Starting TX SPI3 transmitting falling clock edge, 0 = rising edge SPI3 port open, 0 = closed
Not used
SPI2 Starting TX

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Note 3:

Subtypes
Fault 2 Event Bits
Fault 3 Event Bits

Decimal 1 2 4
8
16 32 64 128 256 512 1024 2048 4096 8192 16384 32768
1

Description CRC error in safety critical RAM block Error reloading safety critical RAM block from EEPROM Error loading data from Personality board Excel signal level has been below the low signal level threshold for at least 24 hours Excel beam blocked Personality board error code > 0 Option board error code > 0 IR mA input > 1 mA and < 3.4 mA IR mA input < 1.0 mA IR forced 10 mA not within +/-1 mA gains from PGA don't match local copy error reading or writing EEPROM ECC reflex failure RAM test failure Program memory CRC failure Op code test failure
Interrupt integrity test failure

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Note 4:
Optima and Excel fault and warning codes are displayed in the Event History data field.

Note 5:

Subtypes
ECC Fault Subtypes
mV Fault Subtypes

Decimal 1 2 4 8 16
32 64 128 1 2 4 8
16
32 64 128

Description I2C error reading or writing EEPROM GALPAT RAM test failure Program memory CRC failure Opcode test failure Can't adjust PGA or EEPROM value doesn't match digital pot
Reserved Reserved GALPAT RAM test failure in common area
I2C error reading or writing EEPROM GALPAT RAM test failure Program memory CRC failure Opcode test failure
Can't adjust PGA or EEPROM value doesn't match digital pot
RAM safety variable failure Interrupts integrity failure Stack overflow/underflow failure

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Note 6:

Relay Option Board Error Status

Decimal

Description

Didn't receive STX or ETX

Received undefined command

Exceeded maximum data bytes

Relay Option Board Error

Write collision or buffer overrun

Status

CRC error in SPI packet

Stack overflow or underflow

Program memory CRC error

128

Galpat RAM test failure

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XNX Universal Transmitter

5.3 Informational Messages

Number

Description

Contents of Data Field

I001 Unused

I002 Force Relay Mode Started

Bitpattern for relays. (E.G. 7.0 ==All)

I003 Force Relay Mode Ended.

N/A

I004 Force mA Mode Started

Force current. (E.G. 20.0)

I005 Force mA Mode Ended

N/A

I006 Short-Term Inhibit Started

N/A

I007 Short-Term Inhibit Ended

N/A

I008 Long-Term Inhibit Started

N/A

I009 Long-Term Inhibit Ended

N/A

I010 mA Output Recalibrated

N/A

I011 Bump Test Started

N/A

I012 Bump Test Timed Out

N/A

I013 Bump Test Completed Concentration < Al1 Peak concentration observed

Bump Test Completed I014 Al1 < Concentration < Al2

Peak concentration observed

I015 Bump Test Completed. Al2 < Concentration Peak concentration observed

I016 Zero Calibration Successful

N/A

I017 Zero Calibration Failed

Error code

I018 Calibrate Span Successful 1 of 2

Percent change in span factor from previous

I019 Calibrate Span Successful 2 of 2

Absolute span factor

I020 Calibrate Span Failed

Error code

I021 Calibrate Span Timeout

N/A

I022 Password Changed

1,2 or 3 (access level)

I023 Performing Soft Reset

N/A

I024 Alarms Configured Latching

N/A

Number

Description

I025 Alarms Configured Non-Latching Alarm Relays Configured Normally
I026 Energized Alarm Relays Configured Normally De-
I027 Energized. I028 Fieldbus Address Changed I029 Fieldbus Speed Changed I030 Sensor Type Changed I031 Gas Selection Changed I032 Time For Beam Block Fault Changed I033 Time For Fault Detection Changed I034 Level For Low Signal Fault Changed I035 Invalid Path Length Written I036 Path Length Changed I037 mA for Inhibit Changed I038 mA for Warning Changed I039 mA for Overrange Changed I040 mA for Fault Changed I041 mA for Low Signal Changed I042 mA for Blocked Beam Changed I043 Concentration for mA Full Scale Changed I044 Instrument Id Changed I045 Measuring Units Changed
Alarm 1 Reconfigured for Increasing I046 Concentrations
Alarm 1 Reconfigured for Depleting I047 Concentrations

Contents of Data Field
N/A N/A
N/A
New address (e.g. 15) New speed (e.g. 19200) iCurrentCalGlobalID iCurrentCalGlobalID iBlockFltTime iOtherFltTime fLowSignalLevel fPathLen fPathLen f_mA_Flt_Step[0] f_mA_Flt_Step[1] f_mA_Flt_Step[2] f_mA_Flt_Step[3] f_mA_Flt_Step[4] f_mA_Flt_Step[5] fDisplayRange N/A iMeasurementUnits N/A
N/A

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XNX Universal Transmitter

Number

Description

Alarm 2 Reconfigured for Increasing I048 Concentrations

I049

Alarm 2 Reconfigured for Depleting Concentrations

I050 Alarm 1 Value Changed

I051 Alarm 2 Value Changed

I052 Clock Set

I053 Date Format Changed

I054 Sensor Boots

I055 Unused

I056 Sensor RTC Adjusted

I057 Fault Set Latching

I058 Fault Set Non-Latching

I059 LCD Heater On

I060 LCD Heater Off

I061 Personality Power Up

I062 Option Power Up

I063 Loaded Same Cell

I064 Loaded Changed Cell

I065 Loaded Changed Gas

I066 Option Type Changed

I067 HART® Address Changed

I068 HART Mode Changed

Contents of Data Field N/A N/A fAlarmThres[0] fAlarmThres[1] N/A iDateFormat N/A
Error in seconds or +/-999 if large
Sensor type Option type

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Section 5 - Warnings/Faults

126

XNX Universal Transmitter
6 Specifications

XNX Universal Transmitter Technical Manual

127

XNX Universal Transmitter
6.1 Product Specifications
Electrical

Operating Voltage

EC/mV: 16V to 32V (24V nominal) ** Startup/Normal values ** IR: 18V to 32V (24V nominal) ** Startup/Normal values **

Power Consumption
Termination
20 mA Signal Cable Ports Recommended Cable Construction Material Dimensions Weight Mounting XNX® Enclosure

Configuration
XNX EC XNX mV XNX IR (Optima) XNX IR (Excel)

Max Power 6.2 w 6.5 w 9.7w 13.2w

Inrush
<1A, <10ms@24VDC <750mA <2ms@24VDC <1A, <10ms@24VDC <1A, <10ms@24VDC

Crimp style pluggable with retaining screws, 12-28 AWG (2.5 to 0.5mm2) with Shorting Jumpers: 14-28 AWG (2.0 to 0.5mm2)
NOTE: To maintain EMC integrity, wiring must be shielded by either an integral shield or run through conduit or pipe. Shield should provide 90% coverage

HART® over 3-wire 4-20mA (sink, source, or isolated) compliant with NAMUR NE43
5 (2 right, 2 left, 1 bottom) Available in ¾" NPT, or M25

See Section 2.2.2 Distance Considerations for Installation.

LM25 Aluminum, (SS316 painted optional) 159 x 197 x 113.8 mm / 6.138 x 7.75 x 4.48 inches 2.27 kg (5 lb) Aluminum 5 kg (11 lb) Stainless
Integral Mounting Lugs for Wall- or Optional Pipe-Mount, Optional Wall/Ceiling Bracket

User Interface Standard

Custom Backlit LCD, magnetic wand access

Optional

HART Handheld with IS Port

Environmental - Transmitter Operating

IP Rating

IP66

Temperature*

-40°C to +65°C / -40°F to +149°F

Humidity

0 to 99% RH non-condensing

*Operating temperatures will be limited by the sensors. See tables 6.2.2, 6.2.3, and 6.2.4 for more information.

Environmental - Transmitter Storage

Temperature

-40°C to +65°C / -40°F to +149°F

Humidity

0 to 99% RH non-condensing

Unpowered battery life: (Real Time Clock) 3 years at rated storage temperature

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XNX Universal Transmitter

Hazardous Area Approvals [See Section 6.2 Certifications by Part Number for other approvals (pending)]
XNX-UT**-*****
Class I, Div. 1 Groups A, B, C & D Class I, Zone 1 Group IIC
Class II, Div. 1 Groups F & G, Class II, Zone 20 & 21 FM Approvals Listed AEx D IIB + H2 T6 -40 ºC Tamb 65 ºC AEx D [ia IIC} IIB + H2 T6 -40 ºC Tamb 65 ºC (XNX UT*E-***** & XNX-UT*-*H****)
XNX-AM**-***** UL/Demko 09 ATEX 0809943X / IEC Ex UL 09.0010X
II 2 G Ex d IIC T6 (Tamb -40 °C to +65 °C) IP 66
II 2 D Ex tb IIIC T85 C Db XNX-AM*E-***** & XNX-AM*-*H****
II 2 (1)G Ex d [ia IIC Ga] IIc T6 (Tamb -40 °C to +65 °C) IP 66
II 2 (1)D Ex tb [ia IIIC Da] IIIC T85 Db
XNX-BT**-*****
Class I, Div. 1 Groups A, B, C & D Class I, Zone 1 Group IIC
Class II, Div. 1 Groups F & G, Class II, Zone 20 & 21 INMETRO TUV 12.1018X Ex d IIB + H2 T4 Gb IP 66 -40 ºC ta +65 ºC Ex d [ia IIC Ga] IIB + H2 T4 Gb IP 66 -40 ºC ta +65 ºC (XNX BT*E-***** & XNX-BT*-*H****)
Ex tb [ia IIC Da] IIIc T85 Db Ex tb IIIC 85° Db
FM Approvals Listed AEx D IIB + H2 T6 -40 ºC Tamb 65 ºC AEx D [ia IIC} IIB + H2 T6 -40 º Tamb 65 ºC (XNX BT*E-***** & XNX-BT*-*H****)

Communication Options

Relays

Type: 3 form "C" SPCO contacts for alarm and fault indication. Rating: 250 VAC, 5A/24 VDC, 5A (2 Alarm, 1 Fault)
A remote reset is provided to silence alarms. (The Foundation Fieldbus, relay, and Modbus options are mutually exclusive.)

Modbus

Modbus/RTU over RS-485 physical layer. Interface isolated; includes switchable 120 Ohm termination resistor. Baud rates: 1200 to 38,400; 19,200 default.
(The Foundation Fieldbus, relay, and Modbus options are mutually exclusive.)

Foundation Fieldbus

H1 Physical Layer. 31.25 kbit/s Manchester encoded signal. AMIS-49200 Fieldbus MAU (media access unit). SPC4-2 Fieldbus Controller. Do not use Fieldbus communication in hazardous areas. The Foundation Fieldbus, Relay, and Modbus options are mutually exclusive.

NOTES: 1. The temperature class (T6) is limited to T4 when the MPD sensor is attached locally to the transmitter. 2. XNX EC cartridges and Remote Mount Kit have been evaluated by Underwriters Laboratories (UL) to
Canadian National Standards. 3. Peer to peer and multi-drop network (daisy chained) HART, Modbus®, and FoundationTM Fieldbus
Combustible Gas Detection and may be used only for diagnostics and data collection.
Performance Approvals

129

XNX Universal Transmitter

See Section 6.2 Certifications by Part Number for other approvals
6.2 Sensor Data
6.2.1 Operating and Storage Conditions for Performance Tested EC Cartridges

Gas

Cartridge Operating Pres-

P/N

sure

Oxygen

XNXXSO1SS XNXXSO1FM

80 kPa ~ 120 kPa

XNXXSH1SS

H2S

Hydrogen Sulfide XNXXSH1FM 80 kPa ~ 120 kPa

H2S (High) CO

Hydrogen Sulfide XNXXSH2SS

Carbon Monoxide

XNXXSC1SS XNXXSC1FM

80 kPa ~ 120 kPa 80 kPa ~ 120 kPa

*Store in sealed packages **Check cartridge certificates

Operating Air Speed
0 ~ 6 m/sec
0 ~ 6 m/sec 0 ~ 6 m/sec 0 ~ 6 m/sec

Warm-up Time (minimum)
60 sec.
60 sec. 60 sec. 60 sec.

Temperature

Storage Conditions*

Pressure

Humidity

0 to 20°C, 32 to 68°F 80 to 120 KPa 5 to 95% RH

0 to 20°C, 32 to 68°F 70 to 110 KPa 30 to 70% RH 0 to 20°C, 32 to 68°F 70 to 110 KPa 30 to 70% RH 0 to 20°C, 32 to 68°F 70 to 110 KPa 30 to 70% RH

Time** 6 months 6 months 6 months 6 months

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XNX Universal Transmitter

6.2.2 EC Sensor Performance Data, Factory Mutual Verified (see Section 6.3)

Gas

Cartridge P/N

Selectable Full Scale Range (Display and 4-20mA
Full Scale)

Default Range

Range Increments

Lower Alarm Limit

Lower Detection
Limit

Lower Explosive
Limit (% Vol)

Zero Deviation

Selectable Cal Gas Range

Default Cal Point

Response Time (T50)
sec

Response Time (T90)
sec

Accuracy

Operating Temperature Operating Humidity

Min

Max

Min

Max

O2 Oxygen

XNXXSO1FM

n/a

23.0% Vol n/a 5.0%Vol 5% Vol

n/a

20.9 %Vol (fixed)

20.9 %Vol

T20 <10

H2S Hydrogen Sulfide

XNXXSH1FM

10.0 to 50.0 ppm 15.0 ppm 0.1 ppm 5.0 ppm 1.5 ppm n/a

-2.5 ppm 30 to 70% 10 ppm of the

<20

selected full

CO Carbon Monoxide XNXXSC1FM1

100 to 1000 ppm 300 ppm 100 ppm 30 ppm 15 ppm

na/

-25 ppm scale range 100 ppm

<15

<30

<+/-0.5 %Vol -30°C / -34°F 55°C /131°F 15% RH 90% RH

2 ppm or 10% of <30 reading, whichever is -40°C / -40°F 55°C / 131°F 15% RH 90% RH
greater

<30

See footnote 1 -40°C / -40°F 55°C / 131°F 15% RH 90% RH

FOOTNOTES:
1. XNXXSC1FM accuracy over temperature <±10% of reading 20°C/68°F to 55°C/131°F, <±20% of reading 20°C/68°F to -10°C/14°F, <±30% of reading -10°C/14F to -20°C/-4°F. Recalibration is recommended if the temperature of the local environment has varied by more than -30°C.

NOTES:
· Performance figures are measured by test units calibrated at 50% of full scale, at ambient conditions of 20°C, 50% RH, with the EC weatherproof cover attached · IP rating of FM Cartridges is IP63. · aBpmraerbsosimeunertetrpiccrhepasrnseugsresesudrbeuyee±ftf2oe0ce%tisthtoehnretwhoeeuatOpthu2etsrefronorsmaolrtt:ihtTuehdOee2.oFsueotpnrusetoxfrarocmmhpaltnehg,eaeOs12<0Ks±e0Pn.a4s%ionrsVhtoaaln.stHpaonrewesoesuvuesrrep, etohfsfeieticovtxesypogrfee<ns0ss.u1er%nessoctrhesaphncoghweasonfgtroeaunmtspaiueytncpt aebures%heavacinhoaronwvgeheresinncaspluerebasjlesacurtmreed.cWotonhdeaintriaothpneidfobcrahraoapmnegeretioriidnc
of about 12 seconds. · Operating the XNX EC sensor at extended temperature ranges for a prolonged time period exceeding 12 hours my cause deterioration in the sensor performance and shorten
sensor life. Extended temperature range for XNX EC sensors is -40°C ot -20°C. · Response times may increase at lower temperatures. · FM performance verification is limited to the requirements of the standards identified in Table 6.3 for each cartridge. · Contact Honeywell Analytics for additional data or details.

Section 6 - Specifications

131

XNX Universal Transmitter
6.2.3 EC Sensor Performance Data, DEKRA EXAM verified (see Section 6.3)

Gas

O2 Oxygen

H2S

Hydrogen Sulfide

H2S (High)

Hydrogen Sulfide

Carbon Monoxide

Cartridge P/N
XNXXSO1SS XNXXSH1SS XNXXSH2SS XNXXSC1SS

Selectable Full Scale Range (Display and 4-20mA
Full Scale)

Default Range

Range Increments

Lower Alarm Limit

Lower Detection
Limit

Zero Variation

Selectable Cal Gas Range

Default Cal Point

Response Time (T50)
(sec)

T90 Response T10 Recovery
Time (sec)

Accuracy1

Operating Temperature Operating Humidity

Min

Max

Min

Max

n/a

25.0 %Vol n/a

5.0%Vol 3.5 %Vol

n/a

20.9 %Vol (fixed)

20.9 %Vol

T20 <10

<30

<+/-0.6 %Vol -30°C / -34°F 55°C /131°F 15% RH 90% RH

10.0 to 50.0 ppm 15.0 ppm 0.1ppm 3.0 ppm 1.0 ppm 2.0 ppm

10 ppm

<20

30 to 70%

50 to 500 ppm 100 ppm 10 ppm 5 ppm 1 ppm

2 ppm

of the selected full

50 ppm

<20

scale range

100 to 500 ppm 300 ppm 100 ppm 15 ppm 5 ppm 10 ppm

100 ppm

<15

<30

<+/-0.3 ppm -40°C / -40°F 55°C / 131°F 15% RH 90% RH

<30

<+/-5 ppm -40°C / -40°F 55°C / 131°F 15% RH 90% RH

<30

<+/-2 ppm -40°C / -40°F 55°C / 131°F 15% RH 90% RH

FOOTNOTE:
1. Accuracy of reading at default Alarm 1 concentration (typically 10% FS or defined minimum alarm level setting, whichever is greater) when operated at default full scale.

NOTES:
· Sensor drift between LDL and negative drift fault limits (typcially > negative zero variation) appear as 0 on the display and outputs of the device. · Long-term drift: XNXXSC1SS <5%/year, XNXXSO1SS <4%/year, XNXXSH1SS and XNXXSH2SS <2%/month. · Performance figures are measured by test units calibrated at 50% of full scale, at ambient conditions of 20°C, 50% RH, with the EC weatherproof cover attached. · Operating the XNX EC sensor at extended temperature ranges for a prolonged time period exceeding 12 hours may cause deterioration in sensor performance and shorten
sensor life. Extended temperature ranges for XNX EC sensor cartridges are -40°C to -20°C. · Bapmraerbsosimeunertetrpcicrhepasrnsegusresesudrbeuyee±ftf2oe0ce%tisth,otehnrewthoeeuatOtph2uestrefonrorsmaolrt:tithTuehdeOe.o2Fusoteprnuestxofarromcmhpaltenh,geaeOs120<sK±eP0n.as4oi%nrsVhtoaalsn. tHparoneewsoseuuvsreerp,eotfhsfeeitciovtesxyopgfree<ns0ss.u1e%rnesscothreaspnhcgohewaosnfgtoreaunmtpsaiueytncptaebures%heacavhnioaornvwgeheresincnapsleurebasjlseaucrmrtee.dcWotonhdeaintriaothpneidfobcrahraoapmnegeretioriidnc
of about 12 seconds. · Response times may increase at lower temperatures. · Contact Honeywell Analytics for any additional data or details.

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132

XNX Universal Transmitter

6.2.4 Other EC Sensors

Gas

Cartridge P/N

HCl Hydrogen Chloride

XNXXSR1SS

H2S (Low) Hydrogen Sulfide

SO2 Sulfur Dioxide

SO2 (High) Sulfur Dioxide

NH3 Ammonia

NH3 (High) Ammonia

Cl2 Chlorine

Cl2 (High) Chlorine

ClO2 Chlorine Dioxide

Nitrogen Monoxide

NO2 Nitrogen Dioxide

H2 Hydrogen

H2 (High) Hydrogen

HF Hydrogen Fluoride

XNXXSH3SS XNXXSS1SS XNXXSS2SS XNXXSA1SS XNXXSA2SS XNXXSL2SS XNXXSL1SS XNXXSX1SS XNXXSM1SS XNXXSN1SS XNXXSG1SS XNXXSG2SS XNXXSF1SS

PH3 Phosphine

XNXXSP1SS

see footnotes and notes on following page

Selectable Full Scale Range (Display and 4-20mA Full
Scale)

Default Range

Range Increments

Lower Alarm Limit

Lower Detection
Limit

Zero Deviation

Selectable Cal Gas Range

Default Cal Point

Response Time (T50)
sec

Response Time
(T90) sec

Accuracy1

Typical Accuracy @ Lowest
Alarm Level

Operating Temperature

Min

Max

Operating Humidity

Min

Max

10.0 to 20.0 ppm 10.0 ppm 1.0 ppm 5.0 ppm 0.6 ppm -1.0 ppm

5.0 ppm <452, 3

<1502, 3

<+/-1.0 ppm or

20%

<+/-1.0 @

of applied gas2, 3 3 ppm

-20°C/-4°F

40°C/104°F

15% RH

90% RH

n/a

15.0 ppm n/a

3.0 ppm 1.0 ppm -2.5 ppm

10 ppm <20

<40

<+/-0.3 ppm

<+/-0.3 @ 3 ppm

-40°C / -40°F

55°C / 131°F

15% RH

90% RH

5.0 to 20.0 ppm 15.0 ppm 5.0 ppm 2.0 ppm 0.6 ppm -1.0 ppm

5.0 ppm <15

<30

<+/-0.3 ppm

<+/-0.3 @ 2 ppm

-40°C / -40°F

55°C / 131°F

15% RH

90% RH

20.0 to 50.0 ppm 50.0 ppm 10.0 ppm 5.0 ppm 1.5 ppm -2.5 ppm

25 ppm <15

<30

<+/-0.6 ppm

<+/-0.6 @ 5 ppm

-40°C / -40°F

55°C / 131°F

15% RH

90% RH

50 to 200 ppm 200 ppm 50 ppm 20 ppm 6 ppm -10 ppm

100 ppm <60

<180

<+/-4 ppm

<+/-4 @ 20 ppm

-20°C / -4°F 40°C / 104°F

15% RH

90% RH

200 to 1000 ppm 1,000 ppm 50 ppm 100 ppm 30 ppm -50 ppm

300 ppm <60

<180

<+/-20 ppm

<+/-20 @ 100 ppm

-20°C / -4°F 40°C / 104°F

15% RH

90% RH

n/a

5.00 ppm n/a

0.50 ppm 0.15 ppm -0.25 ppm 30 to 70% 2.0 ppm

<20

of the

5.0 to 20.0 ppm 5.0 ppm 5.0 ppm 1.0 ppm 0.6 ppm -1.0 ppm selected full 2.0 ppm <20 scale range

n/a

1.00 ppm n/a 0.10 ppm 0.03 ppm -0.05 ppm

0.5 ppm <30

<60 <30 <120

<+/-0.2 ppm <+/-0.2 ppm
<+/-30%

<+/-0.20 @ 0.50 ppm

-10°C / 14°F

55°C / 131°F

<+/-0.2 @ 1 ppm

-10°C / 14°F

55°C / 131°F

<+/-0.03 @ 0.1 ppm

-20°C / -4°F

55°C / 131°F

15% RH 15% RH 15% RH

90% RH 90% RH 90% RH

n/a

100 ppm n/a

10 ppm 3 ppm

-5 ppm

50 ppm <15

<30

<+/-2 ppm

<+/-2.0 @ 10 ppm

-20°C / -4°F

55°C / 131°F

15% RH

90% RH

5.0 to 50.0 ppm 10.0 ppm 5.0 ppm 5.0 ppm 1.5 ppm -2.5 ppm

5 ppm

<15

<30

<+/-0.2 ppm

<+/-0.2 @ 5 ppm

-20°C / -4°F

55°C / 131°F

15% RH

90% RH

n/a

1,000 ppm n/a 100 ppm 30 ppm -50 ppm

500 ppm <60

<902

<+/-8 ppm

<+/-8 @ 100 ppm

-20°C / -4°F 55°C / 131°F

15% RH

90% RH

n/a

10,000 ppm

n/a 1000 ppm 300 ppm -500 ppm

5000 ppm <15

<30

<+/-150 ppm

<+/-150 @ 1000 ppm

-20°C / -4°F

55°C / 131°F

15% RH

90% RH

n/a

12.0 ppm n/a

1.5 ppm 0.4 ppm -0.6 ppm

5.0 ppm 120

<240

<+/-0.5 ppm

<+/-0.5 @ 1.5 ppm

-20°C / -4°F

55°C / 131°F

20% RH

75% RH

n/a

1.20 ppm n/a 0.15 ppm 0.04 ppm -0.06 ppm

0.5ppm <15

<30

<+/- 0.02 ppm

<+/-0.02 @ 0.15 ppm

-20°C / -4°F

40°C / 104°F

10% RH

90% RH

Section 6 - Specifications

133

XNX Universal Transmitter
FOOTNOTES (SEE TABLE ON PREVIOUS PAGE):
1. Accuracy of reading at default Alarm 1 concentration (typically 10%FS or defined minimum alarm level setting, whichever greater) when operated at default full scale. 2. System conditioning may be required to achieve stated results. Contact Honeywell Analytics for details. 3. Measured using calibration flow housing at calibration flow rate (300-375 ml/min) with dry gas.
NOTES (SEE TABLE ON PREVIOUS PAGE):
· Data taken at ambient conditions of 20°C, 50% RH. · Data represents typical values of freshly calibrated sensors without optional accessories attached. · Performance figures are measured by test units calibrated at 50% of full scale. · Standard temperature range for XNX EC Sensors is -20°C to +55°C; ATEX, IECEx. · Extended temperature ranges for the XNX EC Sensors are -40°C to -20°C · Accuracy between the temperatures of -40°C and -20°C is ±30% at the applied gas concentration. · Operating the XNX EC Sensors at extended temperature ranges for a prolonged time period exceeding 12 hours may cause deterioration in sensor performance and shorter
sensor life. · aBpmraerbsosimeunertetrpiccrhepasrnseugsresesudrbeuyee±ftf2oe0ce%tisthtoehnretwhoeeuatOpthu2etsrefronorsmaolrtt:ihtTuehdOee2.oFsueotpnrusetoxfrarocmmhpaltnehg,eaeOs12<0Ks±e0Pn.a4s%ionrsVhtoaaln.stHpaonrewesoesuvuesrrep, etohfsfeieticovtxesypogrfee<ns0ss.u1er%nessoctrhesaphncoghweasonfgtroeaunmtspaiueytncpt aebures%heavacinhoaronwvgeheresinncaspluerebasjlesacurtmreed.cWotonhdeaintriaothpneidfobcrahraoapmnegeretioriidnc
of about 12 seconds. · Recalibration is recommended if the temperature of local environment has varied by more than ±15°C from the temperature of calibration. · Response times may increase at lower temperatures. · Contact Honeywell Analytics for any additional data or details.

Section 6 - Specifications

134

XNX Universal Transmitter

6.2.5 XNX EC Sensor Cross-sensitivity

Gas type

Part Number Gas Type Applied Concentration

Unit

XNXXS01SS XNXXSO1FM

Carbon Dioxide

%vol

Carbon monoxide

2000

Hydrogen

20000

Chlorine

Nitrogen dioxide

Propan-2-ol

500

Methanol

500

HCl

XNXXSR1SS

ppm

Hydrogen fluoride

Hydrogen suflfide

Sulphur dioxide

Arsine

Phosphine

Diborane

Ammonia

Carbon Monoxide

100

Carbon Dioxide

5000

Chlorine

0.5

H2S (Low Range)

XNXXSH3SS

Ethylene Hydrogen

100 ppm
100

Hydrogen Sulfide

Nitrogen Monoxide

Nitrogen Dioxide

Sulfur Dioxide

Section 6 - Specifications

135

Reading
0.1
0 0 5.6 0.9 0 0 6.7 -3.6 22.4 0 -0.14 -1.3 0 <2 0 0 0 0 10 0 0 0

Unit %vol (change O2 reading) per %vol CO2
ppm HCl
ppm H2S ppm H2S ppm H2S ppm H2S ppm H2S ppm H2S ppm H2S ppm H2S ppm H2S ppm H2S

XNX Universal Transmitter

Gas type

Part Number Gas Type Applied Concentration

Unit

Ammonia

Carbon Monoxide

100

Carbon Dioxide

5000

Chlorine

0.5

H2S

XNXXSH1SS XNXXSH1FM

Ethylene Hydrogen

100 ppm
100

Hydrogen Sulfide

Nitrogen Monoxide

Nitrogen Dioxide

Sulfur Dioxide

Ammonia

Carbon Monoxide

100

Carbon Dioxide

5000

Chlorine

0.5

H2S (High Range)

XNXXSH2SS

Ethylene Hydrogen

100 ppm
100

Hydrogen Sulfide

Nitrogen Monoxide

Nitrogen Dioxide

Sulfur Dioxide

Reading 0 <2 0 0 0 0 10 0 0 0 0 <2 0 0 0 0 10 0 0 0

Unit
ppm H2S ppm H2S ppm H2S ppm H2S ppm H2S ppm H2S ppm H2S ppm H2S ppm H2S ppm H2S ppm H2S ppm H2S ppm H2S ppm H2S ppm H2S ppm H2S ppm H2S ppm H2S ppm H2S ppm H2S

Section 6 - Specifications

136

XNX Universal Transmitter

Gas type CO
SO2 SO2

Part Number Gas Type Applied Concentration

Unit

Acetone

1000

Acetylene

Ammonia

100

Carbon Monoxide

100

Chlorine

XNXXSC1SS XNXXSC1FM

Ethanol Ethylene Hydrogen

2000

100

ppm

100

Hydrogen Sulfide

Iso-Propanol

200

Nitrogen Monoxide

Nitrogen Dioxide

800

Sulfur Dioxide

Carbon Monoxide

300

Hydrogen Sulfide

XNXXSS1SS

Nitrogen Monoxide

ppm

Nitrogen Dioxide

Carbon Monoxide

300

Hydrogen Sulfide

XNXXSS2SS

ppm

Nitrogen Monoxide

Nitrogen Dioxide

Reading 0 80 0 100 0 3 85 20 0 0 8 20 0.5 <3 0 0 ~-5 <3 0 0 ~-5

Unit ppm CO ppm CO ppm CO ppm CO ppm CO ppm CO ppm CO ppm CO ppm CO ppm CO ppm CO ppm CO ppm CO ppm SO2 ppm SO2 ppm SO2 ppm SO2 ppm SO2 ppm SO2 ppm SO2 ppm SO2

Section 6 - Specifications

137

XNX Universal Transmitter

Gas type NH3
NH3 (High Range)
Cl2 Cl2 (High Range) ClO2

Part Number XNXXSA1SS
XNXXSA2SS
XNXXSL2SS XNXXSL1SS XNXXSX1SS

Gas Type Applied Alcohols Carbon Dioxide Carbon Monoxide Hydrocarbons Hydrogen Hydrogen Sulfide Alcohols Carbon Monoxide Chlorine Nitrogen Dioxide Sulfur Dioxide Hydrogen Hydrogen Sulfide Carbon Dioxide Hydrogen Chloride Hydrogen Sulfide Nitrogen Dioxide Sulfur Dioxide Carbon Dioxide Hydrogen Chloride Hydrogen Sulfide Nitrogen Dioxide Sulfur Dioxide Refer To Cl2

Concentration 1000 5000 100
10000 20 1000 100 5 10 20 3000 20
20000 9 25 50 50
20000 9 25 50 50
Refer to Cl2

Unit ppm % range ppm
ppm
ppm
ppm Refer to Cl2

Reading 0 0 0 0 0 2 0 0 0 0 -40 0 20 0
1.25 -16.3 1.25 (transient) 9.1
0 1.25 -16.3 1.25 (transient) 9.1 Refer to Cl2

Unit
ppm NH3 ppm NH3 ppm NH3 ppm NH3 ppm NH3 ppm NH3 ppm NH3 ppm NH3 ppm NH3 ppm NH3 ppm NH3 ppm NH3 ppm NH3 ppm Cl2 ppm Cl2 ppm Cl2 ppm Cl2 ppm Cl2 ppm Cl2 ppm Cl2 ppm Cl2 ppm Cl2 ppm Cl2 Refer to Cl2

Section 6 - Specifications

138

XNX Universal Transmitter

Gas type NO NO2
H2

Part Number Gas Type Applied Concentration

Unit

Carbon Monoxide

300

XNXXSM1SS

Sulfur Dioxide Nitrogen Dioxide

5 ppm
5

Hydrogen Sulfide

Carbon Monoxide

300

Hydrogen Sulfide

XNXXSN1SS Sulfur Dioxide

ppm

Nitrogen Monoxide

Chlorine

Carbon Monoxide

300

Hydrogen Sulfide

Sulfur Dioxide

Nitrogen Monoxide

XNXXSG1SS Nitrogen Dioxide

ppm

Chlorine

Hydrogen Cyanide

Hydrogen Chloride

Ethylene

100

Reading 0 0
<1.5 ~1.5
0 ~ -1.2
0 0 ~1 < 60 <3 0 »10 0 0 »3 0 »80

Unit
ppm NO
ppm NO
ppm NO
ppm NO
ppm NO2 ppm NO2 ppm NO2 ppm NO2 ppm NO2 ppm H2 ppm H2 ppm H2 ppm H2 ppm H2 ppm H2 ppm H2 ppm H2 ppm H2

Section 6 - Specifications

139

XNX Universal Transmitter

Gas type

Part Number Gas Type Applied Concentration

Unit

Ammonia

100

ppm

Arsine

0.2

ppm

Carbon Dioxide

1000

ppm

Carbon Monoxide

100

ppm

Chlorine

ppm

Ethylene

500

ppm

H2 (High Range) XNXXSG2SS Hydrogen Cyanide

ppm

Hydrogen Sulfide

ppm

Iso-Propanol

1100

ppm

Methane

Nitrogen Dioxide

ppm

Ozone

0.25

ppm

Sulfur Dioxide

ppm

Carbon Monoxide

2000

ppm

Hydrogen

20000

ppm

Chlorine

ppm

Nitrogen Dioxide

ppm

Iso-Propanol

500

ppm

Methanol

500

ppm

XNXXSF1SS

Hydrogen Fluoride

ppm

Hydrogen Sulfide

ppm

Sulfur Dioxide

ppm

Arsine

ppm

Phosphine

ppm

Diborane

ppm

Section 6 - Specifications

140

Reading 0 0 0 150 0
yes; n/d 0 4
yes; n/d 0 -40 0 0 0 0 5.8
0.65 0 0 7
-3.6 28.3
0 -0.14 -1.3

Unit ppm H2 ppm H2 ppm H2 ppm H2 ppm H2 ppm H2 ppm H2 ppm H2 ppm H2 ppm H2 ppm H2 ppm H2 ppm H2 ppm HF ppm HF ppm HF ppm HF ppm HF ppm HF ppm HF ppm HF ppm HF ppm HF ppm HF ppm HF

XNX Universal Transmitter

NOTES:
· · · ·
· ·
·

Gas type PH3

Part Number XNXXSP1SS

Gas Type Applied Carbon Monoxide Hydrogen Chlorine Nitrogen Dioxide Ethanol Iso-Propanol Hydrogen Chloride Hydrogen Fluoride Hydrogen Sulfide Ammonia Sulfur Dioxide Silane Arsine Diborane Germane

Concentration 2000 5000 1 8 2000 1000 10 10 0.5 100 50 1 1 1 1

Unit

Reading

Unit

ppm

<10

ppm PH3

ppm

<10

ppm PH3

ppm

-70

ppm PH3

ppm

-860

ppm PH3

ppm

<10

ppm PH3

ppm

<10

ppm PH3

ppm

<10

ppm PH3

ppm

<10

ppm PH3

ppm

ppm PH3

ppm

1050 (transient) ppm PH3

ppm

550 (transient) ppm PH3

ppm

364

ppm PH3

ppm

680

ppm PH3

ppm

454

ppm PH3

ppm

454

ppm PH3

The figures of cross-sensitivity are typical values and should not be used as a basis for cross calibration.
Cross-sensitivities may not be linear and should not be scaled. For some cross-interferents breakthrough may occur if gas is applied a longer time period. There are many gases and vapors that can poison electochemical cells. It is difficult to give a complete and exclusive list of all species which will have an effect on the sensors. However, these are some common substances which should be avoided: Airborne greases - These may block gas access into the sensors and therefore reduce sensitivity. Silicone compounds - These are often found in sprays, aerosols, lubricants, polishes, adhesives, sealants, zebra strip, cleaning agents, and floor waxes. These compounds tend to reduce the sensitivity of the sensors and generally will have a permanent effect. Solvents and organic vapors - Many organic vapors will damage the sensors. Some common ones are IPA, toluene, xylene, other benzine derivatives, petrol, and diesel. It is difficult to give a full list of organic vapors, as there are so many of them. Generally, any organic vapor should be avoided.

Section 6 - Specifications

141

XNX Universal Transmitter
6.2.6 XNX MPD Sensor Performance Data

Sensor Type MPD-IC1 MPD-IV1 MPD-IF1
MPD-CB1

Gas
Carbon Dioxide Methane Propane Propane Methane Hydrogen Butane-2

Typical Typical

Response Response Maximum

Time

Range

(T50) sec (T90) sec

<30

<70

5.00 %Vol

<15

<30

5.00 %Vol

<15

<30

100 %LEL

<15

<30

<10

<30

<10

<30

100 %LEL

<15

<40

Accuracy (% of full scale or % of applied gas) ±5%FS or ±15% ±5%FS or ±15% ±5%FS or ±15%
±5%FS or ±15%

Drift Over Time < 3%/yr < 3%/yr < 3%/yr
< 3%/yr

Operating Humidity
0-95% RH noncondensing

Operating Temperature

Min

Max

-20°C / -4°F +50°C / 122°F -20°C / -4°F +50°C / 122°F -20°C / -4°F +50°C / 122°F

-40°C / -40°F

+65°C / 149°F

Operating Pressure 80kPa ~ 110kPa 80kPa ~ 110kPa 80kPa ~ 110kPa
80kPa ~ 120kPa

Operating Air Speed 0 ~ 6m/sec 0 ~ 6m/sec 0 ~ 6m/sec
0 ~ 6m/sec

Nonane

<20

<50

NOTES:
· · · · · · · · · · · · · ·

Response times may vary depending upon molecular weight, size, and structure. CSA approved hydrogen sensors are MPDUT-CB1 and 705 STD. DEKRA EXAM approved sensors are MPDAM CB1 and SPHT Data taken at 20-25°C. Contact Honeywell Analytics for additional data or details. Response times may increase at lower temperatures. Data represents typical values without optional accessories attached. System conditioning may be required to achieve stated results. Contact Honeywell Analytics for details. Performance figures are measured using a sample humidity of 50% RH. Performance figures are measured between 40 and 60% of full scale. Performance figures are measured by test units calibrated at 50% of full scale. Use of the weatherproof cap will increase response times. FM 6340 performance approval based on MPD-IC1 with SPXCDWP T50<60 T90<150. Use of the weatherproof cap will increase response times. FM 6340 performance approval based on MPD-IC1 with SPXCDWP T50<60 T90<150.

Section 6 - Specifications

142

XNX Universal Transmitter

6.2.7 EN60079-29-1 Performance Approved Gases for mV Sensor Types

Sensor Type MPD AMCB1

EN60079-29-1 Reference
Standard Test Gas Other Gases

Hydrogen
l

Verified Gas Selections

Methane-2 Propane-2 Butane-2

Star 2 n-nonane

Star 4

Standard Test Gas

SP-HT

Other Gases

n-nonane

Max Zero Deviation (see note 1)

-7% LEL

-9% LEL -7% LEL

LDL (see note 2)

3% LEL

5% LEL 3% LEL

NOTES:
1. Readings < 0% LEL are not displayed or indicated on the 20 mA output. Values exceeding the zero deviation limit will result in F111 faults. 2. Readings < LDL are shown as 0% on the display and 20 mA output.

6.2.8 Other Sensor Performance Data
Performance data for other supported sensors is available in their respective technical manuals.

Section 6 - Specifications

143

XNX Universal Transmitter

6.3 XNX Certifications by Part Number Series
Contact Honeywell Analytics for information about approvals not shown in this section.

XNX Certifications XNX-UT Series

XNX Transmitter IR
Personality

XNX Transmitter mV Personality

XNX-UTSI-***** XNX-UTAI-*****

XNX-UTSV-***** / XNX-UTAV-*****

XNX Transmitter EC Personality
XNX-UTSE-***** / XNX-UTAE-*****

XNX Part Number Series

Options

With Generic 20 mA Input With Optima Plus With Searchline Excel MPD-UTCB1 (Cat Bead) MPD-UTIV1 (IR Methane) MPD-UTIF1 (IR Flam) MPD-UTIC1 (IR CO2) with 705 with Sensepoint with Sensepoint PPM with Sensepoint HT With XNXXSO1FM O2 Cartrdige With XNXXSH1FM H2S Cartridge With XNXXSC1FM CO Cartridge SO2, NH3, Cl2, ClO2, NO, NO2, H2 PPM HCL, HCN, HF, O3, PH3 Modbus Relays Local HART Foundation Fieldbus

C-UL Classified For Hazardous Locations

CSA

Hazardous Location

Performance US Toxic Performance

FM Listed

Flammable Performance

Toxic Gas Detector
T = 3/4 NPT threaded Transmitters & Adapters N/A = Not Applicable

UL 1203
UL 913-7th Edition
CAN/CSA C222 No 30 M-1986 CAN/CSA C222 No 157-92 (Applies to Local HART Option and/or EC Adaptors) CSA C222 No 152
Standard referenced in notes 1, 2, 3
FM 6310 / 6320
FM 6325 FM 6340
1. ANSI/ISA 92.04.01, Part 1 2007 2. ISA 92.0.01, Part 3 1998 3. FM 6340

T T T T T T T T N/A N/A N/A T T T T T T T T N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A T T T T N/A N/A T N/A
T T T T N/A N/A T T N/A N/A N/A T T T T T T T N/A
N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A T T T T N/A N/A T N/A
N/A T N/A T N/A N/A N/A T N/A N/A N/A N/A N/A N/A N/A T T T T N/A N/A N/A N/A N/A N/A 3 N/A N/A N/A N/A 1 2 3 N/A T T T T N/A T N/A T N/A N/A N/A T N/A N/A N/A N/A N/A N/A N/A T T T T N/A N/A T N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A T T T T N/A N/A N/A N/A N/A N/A T N/A N/A N/A N/A N/A N/A N/A N/A T T T T

Section 6 - Specifications

144

XNX Universal Transmitter

XNX Certifications by XNX-AM Series

XNX Transmitter IR Personality

XNX Transmitter mV Personality

XNX-AMSI-***** XNX-AMAI-*****

XNX-AMSV-***** / XNX-AMAV-*****

XNX Part Number Series

XNX Transmitter EC Personality XNX-AMSE-***** / XNX-AMAE-*****

Options

With Generic 20 mA Input With Optima Plus With Searchline Excel MPD-AMCB1 (Cat Bead) MPD-AMIV1 (IR Methane) MPD-AMIF1 (IR Flam) MPD-AMIC1 (IR CO2) With 705 HT With Sensepoint With Sensepoint PPM With Sensepoint HT With Oxygen Cartrdige With H2S Low Cartridge With H2S Med Cartridge With H2S High Cartridge With CO Cartridge SH2O2P,PNMH3,HCClL2,,HClCON2,, HNF,O,O3N,O2P,H3 Modbus Relays Local HART Foundation Fieldbus

Electromagnetic & Safety; CE Mark
EMC Compliance

EU directive 2004/108/EC EN 50270:2006 EU directive 94/9/EC EN 60079-29-0: 2009

EN 60079-29-1: 2007

EN 60079-11: 2012

Hazardous Location
---
ATEX/DEMKO IECEx

EN 60079-26: 2007 IEC 60079-31 1st Ed IEC 60079-0 6th Ed IEC 60079-1 6th Ed

IEC 60079-11 6th Ed

IEC 60079-26 2nd Ed

EN 60079-31: 2009

B = Both 3/4 NPT and M25 M = M25 threaded Transmitters & Adapters MN/1A==WNhoetnAupspeldicawbitleh S3KRMK in a Zone 0 location

M M MMMMMMMM M MMMM M M M MM M B B BBBBBBBB B BBBB B B B BB B M M MMMMMMMM M MMMM M M M MM M M M M M M M M N/A M M M M M M M M M M M M M M M M M M M M N/A M M M M M M M M M M M M M N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A M M M M M M N/A N/A M N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A M M M M M M N/A N/A N/A N/A M M M M M M M N/A N/A N/A M M M M M M M M M M M M M M M M M M N/A M M M M M M M M M M M M M M M M M M M M N/A M M M M M M M M M M M M M N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A M M M M M M N/A N/A M M N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A M1 M1 M1 M1 M1 M1 N/A N/A N/A N/A M M M M M M M N/A N/A N/A M M M M M M M M M M M

Section 6 - Specifications

145

XNX Universal Transmitter

XNX Certifications XNX-AM Series

XNX Transmitter IR Personality
XNX-AMSI-***** XNX-AMAI-*****

XNX Transmitter mV Personality XNX-AMSV-***** / XNX-AMAV-*****

XNX Part Number Series

XNX Transmitter EC Personality
XNX-AMSE-***** / XNXAMAE-*****

Options

Foundation Fieldbus

SO2, NH3, Cl2, ClO2, NO, NO2, H2 PPM HCL, HCN, HF, O3, PH3

Local HART

With XNXXSC1SS CO Cartridge

H2S

With XNXXSH2SS Cartridge

With XNXXSH1SS H2S Cartridge

With XNXXSO1SS O2 Cartrdige

With Sensepoint HT*

With Sensepoint PPM

With Sensepoint

MPD-AMIC1 (IR CO2) With 705 HT

MPD-AMIF1 (IR Flam)

MPD-AMIV1 (IR Methane)

MPD-AMCB1 (Cat Bead)*

With Searchline Excel

With Optima Plus

With Generic 20 mA Input

Relays

Modbus

Performance* EXAM
DEKRA GmbH

IEC 60079-29-1:2007*** EN 60079-29-1:2007*** EN 45544:1999
EN 50104:2010**

N/A M N/A M N/A N/A N/A N/A N/A N/A M N/A N/A N/A N/A N/A N/A M M N/A

N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A M M M N/A N/A M N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A M N/A N/A N/A N/A N/A M

M N/A M N/A

EN 50271:2010

N/A M N/A M N/A N/A N/A N/A N/A N/A M M M M M N/A N/A M M N/A

TÜV Rhineland

IEC61508 EN 50402

B B B N/A N/A N/A N/A B B B B B B B B B B B N/A N/A N/A N/A B B B B B B B B

B N/A N/A N/A N/A B N/A N/A N/A N/A

Delays resulting from transmission errors between sensor and transmitter extend response times T90 by more than one-third. The period until fault indication is 10 seconds. M = M25 threaded Transmitters & Adapters B = Both XNX-UT**-***** 3/4"NPT and XNX-AM**-***** transmitters N/A = Not Applicable *Tested components: handheld in point-to-point mode, weatherproof cap (not used for calibration), calibration mask. **Tested applications: oxygen deficiency and oxygen enrichment *** Tested gases: methane-2, butane-2, propane-2, hydrogen, n-nonane

Section 6 - Specifications

146

XNX Universal Transmitter

XNX Certifications - MPD-BT**.***** Part Number Series

XNX Transmitter IR Personality

XNX Transmitter mV Personality

XNX-BTSI-***** XNX-BTAI-*****

XNX-BTSV-***** XNX-BTAV-*****

XNX Transmitter EC Personality
XNX-BTSE-***** XNX-BTAE-*****

Options

XNX Part Number Series

With Generic 20 mA Input With Optima Plus With Searchline Excel MPD-BTCB1 (Cat Bead) MPD-BTIV1 (IR Methane) MPD-BTIF1 (IR Flam) MPD-BTIC1 (IR CO2 ) with 705 HT With XNXXSO1FM O2 Cartrdige With XNXXSH1FM H2S Cartridge With XNXXSC1FM CO Cartridge SO2, NH3, CL2, ClO2, NO, NO2 , H2 PPM HCL, HCN, HF, O3, PH3 Modbus Relays Local HART FOUNDATION Field Bus

UL Classified
INMETRO TÜV Rheinland
FM Listed

UL 1203 UL 913-7th Edition Applies to Local HART Option) ABNT NBR IEC 60079-0:2008 ABNT NBR IEC 60079-1:2009 ABNT NBR IEC 60079-11:2013 ABNT NBR IEC 60079-26:2008 ABNT NBR IEC 60079-31:2014 Portar:a INMETRO n°179 de 18/05/2010 ABNT NBR IEC 60529-:2009 Standard referenced in notes 1, 2, 3 FM 6310 / 6320 FM 6325 FM 6340

T = 3/4 NPT threaded Transmitters & Adapters N/A = Not Applicable

Specifications

T T T T T T T T TTT T T T T T

N/A N/A N/A N/A N/A N/A N/A N/A T T T T N/A N/A T N/A

B B B B B B B B BBB B B B B B

N/A N/A N/A N/A N/A N/A N/A N/A B B B B N/A N/A T N/A

B B B B B B B B BBB B B B B B

T T T T T T T T TTT T T T T T

N/A N/A N/A N/A N/A N/A 3 N/A 1 2 3 N/A T

T TT

N/A T N/A T N/A N/A N/A T N/A N/A N/A N/A T

T TT

N/A N/A T N/A N/A N/A N/A N/A N/A N/A N/A N/A T

T TT

N/A N/A N/A N/A N/A N/A T N/A N/A N/A N/A N/A T

T TT

1. ANSI/ISA 92.04.01, Part 1 2007 2. ISA 92.0.01, Part 3 1998 3. FM 6340

15417

XNX Universal Transmitter
6..3.1 Certification Labels

Specifications

Figure 229. XNX-UT**-***** configuration
14582

XNX Universal Transmitter
Certification Labels

XNX
UNIVERSAL TRANSMITTER

ATENÇÃO-NÃO ABRA ONDE UMA ATMOSFERA EXPLOSIVA POSSA ESTAR PRESENTE

MADE IN USA

11-KB4BO-0120X

XNX-

SN:

DEMKO 09 ATEX 0809943X

to 32 VDC Max. Pmax =

IECEx UL

0539

0539
1180

XNX-AM-: Contact Ratings: 250 VAC 5A, BVS 10 ATEX G 001X

24 VDC 5A, Resistive Load Only
Honeywell Analytics, Inc; 405 Barclay Blvd, Lincolnshire, IL 60069 USA

EN60079-29-1 PFG 10 G 002 X

Specifications

Figure 230. XNX-AM**-***** Configuration
149

XNX Universal Transmitter
6.4 Product Identification
6.4.1 XNX Universal Transmitter
The XNX part numbering system contains all of the information necessary to convey the product configuration, including options. Agency, port thread, enclosure material, and sensor personality define the standard unit. Three option fields define optional relay or fieldbus interfaces and factory installed local HART. The sensor and range field is used exclusively by millivolt units to assemble the defined MPD sensor type and corresponding thread to the transmitter. Agency approvals of the MPD sensor are unique by device and part number. Ensure that the approvals of both the transmitter and the MPD sensor meet the requirements of the installation.

Enclosure Options (See Section 6.2 for Agency Approvals)

XNX -

Model q

AM - A

AM - S

UT - A

UT - S

BT - A

BT - S

Port Thread q

Material q

M25 M25 3/4 " NPT

Painted LM25 Aluminum
Painted 316 Stainless Steel
Painted LM25 Aluminum

3/4 " NPT

Painted 316 Stainless Steel

3/4 " NPT

Painted LM25 Aluminum

3/4 " NPT

Painted 316 Stainless Steel

Sensor q
E - Electrochem
I - Infrared
V - Millivolt

Interface

Option

Local HART q

MPD Type Installed

N - None

NNN - None

R - Relay

H - Local HART

CB1 - MPD-CB1 (Catalytic Bead %LEL)1

M - Modbus
F - Foundation Fieldbus

IF1 - MPD-IF1 (IR %LEL Flam)1 IV1 - MPD-IV1 (IR CH4 0-5% Vol)1 IC1 - MPD-IC1 (IR CO2 0-5% Vol)1

Section 6 - Specifications

150

XNX Universal Transmitter

6.4.2 XNX EC Replacement Sensors

XNX ID

Target Gas

1 O2 Oxygen 2 H2S Hydrogen Sulfide (Low Range) 3 H2S Hydrogen Sulfide 4 H2S Hydrogen Sulfide (High Range) 5 CO Carbon Monoxide

6 SO2 Sulfur Dioxide 7 SO2 Sulfur Dioxide (High Range) 8 NH3 Ammonia 9 NH3 Ammonia (High Range) 10 Cl2 Chlorine 11 Cl2 Chlorine (High Range) 12 ClO2 Chlorine Dioxide 13 NO Nitrogen Monoxide
14 NO2 Nitrogen Dioxide 15 H2 Hydrogen 16 H2 Hydrogen (High Range) 17 HCl Hydrogen Chloride
19 HF Hydrogen Fluoride
21 PH3 Phosphine

Cartridge Part No XNXXS01SS XNXXSO1FM XNXXSH3SS XNXXSH1SS XNXXSH1FM
XNXXSH2SS XNXXSC1SS XNXXSC1FM XNXXSS1SS XNXXSS2SS XNXXSA1SS XNXXSA2SS XNXXSL2SS XNXXSL1SS XNXXSX1SS XNXXSM1SS XNXXSN1SS XNXXSG1SS XNXXSG2SS XNXXSR1SS XNXXSF1SS XNXXSP1SS

Maximum Range 25.0 %Vol 23.0% Vol 15.0 ppm

Selectable Range
N/A
N/A

Increment N/A N/A

Default Range 25.0 %Vol 23.0% Vol 15.0 ppm

Cal Gas Range Cal Gas P/N

20.9 %Vol 5.0 to 10.0 ppm

N/A GFV263

50.0 ppm 10.0 to 50.0 ppm 0.1 ppm 15.0 ppm

3 to 35 ppm GFV258

500 ppm 50 to 500 ppm

100 to 500 ppm 1,000 ppm
100 to 1,000 ppm

20.0 ppm 5.0 to 20.0 ppm

50.0 ppm 20.0 to 50.0 ppm

200 ppm 50 to 200 ppm

1000 ppm 200 to 1,000 ppm

5.00 ppm

N/A

20.0 ppm 5.0 to 20.0 ppm

1.00 ppm

N/A

100 ppm

N/A

50.0 ppm 5.0 to 50.0 ppm

1000 ppm

N/A

10,000 ppm

N/A

20.0 ppm 10.0 to 20.0 ppm

12.0 ppm

N/A

1.20 ppm

N/A

10 ppm 100 ppm

15 to 350 ppm GFV421

100 ppm 300 ppm

30 to 200 ppm GFV295

5.0 ppm 15.0 ppm

10 ppm 50.0 ppm

50 ppm 200 ppm

50 ppm 1,000 ppm

N/A

5.00 ppm

5.0 ppm 5.0 ppm

N/A

1.00 ppm

N/A

100 ppm

5.0 ppm 10.0 ppm

N/A

1,000 ppm

N/A

10,000 ppm

1.0 ppm

10.0 ppm

N/A

12.0 ppm

N/A

1.20 ppm

2 to 14 ppm 6 to 35 ppm 150 to 140 ppm 60 to 700 ppm 2 to 3 ppm 2 to 14 ppm 0.3 to 0.7 ppm 30 to 70 ppm 2 to 35 ppm 300 to 700 ppm 3,000 to 7,000 ppm 4 to 12 ppm 4 to 8 ppm 0.5 to 0.7 ppm

Contact HA GFV441
Contact HA Contact HA
GFV251 GFV251 Gas Generator GFV216 GFV435 GFV364 Contact HA Contact HA Contact HA GFV405

Cal Gas Description
N/A
10 ppm H2S
25 ppm H2S
50 ppm H2S
100 ppm CO
7.5 ppm SO2 25 ppm SO2 100 ppm NH3 300 ppm NH3 2 ppm Cl2 in N2 2 ppm Cl2 in N2
0.5 ppm 50 ppm NO in N2
5 ppm NO2 500 ppm H2 5000 ppm H2 in N2 5 ppm HCl in N2 5 ppm HF in N2 0.5 ppm PH3 in N2

1 Indicates agency approval and port thread specification

Section 6 - Specifications

151

XNX Universal Transmitter
6.4.3 XNX EC Replacement Cells

Replacement Cell P/N

Target Gas

S3KO1SS
S3KH1SS S3KH1SS S3KH1SS S3KH2SS

O2 Oxygen H2S Hydrogen Sulfide (Low Range) H2S Hydrogen Sulfide H2S Hydrogen Sulfide (High Range)

S3KC1SS

CO Carbon Monoxide

S3KS1SS S3KS1SS S3KA1SS S3KA2SS S3KL1SS S3KL1SS S3KX1SS S3KM1SS S3KN1SS S3KG1SS S3KG2SS S3KR1SS S3KY1SS S3KF1SS S3KZ1SS S3KP1SS

SO2 Sulfur Dioxide SO2 Sulfur Dioxide (High Range) NH3 Ammonia NH3 Ammonia (High Range) Cl2 Chlorine Cl2 Chlorine (High Range) ClO2 Chlorine Dioxide NO Nitrogen Monoxide
NO2 Nitrogen Dioxide H2 Hydrogen (Low Range) H2 Hydrogen (High Range) HCl Hydrogen Chloride
HCN Hydrogen Cyanide
HF Hydrogen Fluoride
O3 Ozone PH3 Phosphine

Section 6 - Specifications

152

Cartridge Part No XNXXS01SS XNXXSO1FM XNXXSH3SS XNXXSH1SS XNXXSH1FM XNXXSH2SS XNXXSC1SS XNXXSC1FM XNXXSS1SS XNXXSS2SS XNXXSA1SS XNXXSA2SS XNXXSL2SS XNXXSL1SS XNXXSX1SS XNXXSM1SS XNXXSN1SS XNXXSG1SS XNXXSG2SS XNXXSR1SS XNXXSY1SS XNXXSF1SS XNXXSZ1SS XNXXSP1SS

XNX Universal Transmitter

6.4.4 Multi Purpose Detector (MPD)
Similar to the XNX Transmitter, the MPD part numbering system defines the agency approval and thread type. The only material selection is Stainless Steel. Four sensor selections are available. Agency Approvals are specific to the 4 sensor types. Ensure the approval of the specific sensor type meets the requirements of the installation.

Model Type

Port Config

(See Section 6.2 for Agency Approvals)

Installed Sensor

MPD -

M25

CB - Catalytic Bead %LEL

3/4" NPT IF - IR %LEL Flammable

3/4" NPT IV - IR Methane 0-5% Vol

IC - R Carbon Dioxide 0-5% Vol

Range
q 1 - Default 2 to 9 - Future

6.4.5 XNX Catalytic Bead and IR Replacement Sensor Cartridges

Sensor Type1, 2

Target Gas

Cartridge Part No

Operating Pressure Range
(kPa)

Operating Humidity Range (% RH noncondensing)

Air Speed (m/s)

Maximum Range

Selectable Range3

Increment

Default Range

Cal Gas Range Cal Gas P/N

Cal Gas Description

MPD-IC1 Carbon Dioxide 1226-0301 80 - 110 see footnote 4 0 - 6 5.00 %Vol

Methane MPD-IV1
Methane

1226-0299 80 - 110 1226-0299 80 - 110

0 - 95 0 - 95

0 - 6 5.00 %Vol 0 - 6 100 %LEL

MPD-IF1 Flammables

1226-0300 80 - 110

0 - 95

0 - 6 100 %LEL

MPD-CB1 Flammables

1226A0359 80 - 120 see footnote 5 0 - 6 100 %LEL

1. Agency approved hydrogen sensors are MPD-CB1 and 705 STD.

1.00 to 5.00 %Vol 1.00 to 5.00 %Vol 1.00 to 5.00 %Vol 20 to 100 %LEL3 20 to 100 %LEL3

1.00 %Vol 1.00 %Vol 1.00 %Vol 10 %LEL 10 %LEL

5.00 %Vol 5.00 %Vol 5.00 %Vol 100 %LEL 100 %LEL

1.50 to 3.5 %Vol 1.50 to 3.5 %Vol 1.50 to 3.5 %Vol
30 to 70 %LEL 30 to 70 %LEL

Contact HA GFV352 GFV352 GFV406 GFV352

2.5 %VOL CO2 in Air 2.5 %VOL CH4 in Air 2.5 %VOL CH4 in Air 1 %VOL C3H8 in Air 50 %LEL CH4 in Air

2. When ordering replacement MPD sensor cartridges, the replacement cartridge must be the same type as factory configured. Substituting a different cartridge will void agency certification.
3. On XNX %LEL units carrying UL/CSA certifications, the range is fixed at 100%LEL and is not adjustable. 4. Humidity: 5% to 95% RH non-condensing

5. Humidity: 0 to 99% RH non-condensing

Section 6 - Specifications

153

XNX Universal Transmitter
6.4.6 Accessories/Spares

Accessory/Spare

Part Number

Description

Pipe Mount Kit

For use on pipes from 2-6 inches (50-150mm) in diameter. 1226A0358
Kit includes: Pipe Mount Bracket, (2) Carriage Bolts, Nuts and Lock Washers.

Remote EC Sensor Mounting Kit

S3KRMK

The remote sensor mounting kit (S3KRMK) allows the XNX EC sensors to be remotely mounted via an IS cable kit, up to 50 feet (15 meters) from the transmitter. The kit includes 50 feet of shielded cable, cable glands and remote terminal box. The cable can be cut to the required length and terminated at the remote terminal box.

Ceiling Mount Bracket Kit

The optional Ceiling Mount Bracket Kit allows the XNX to be mounted to the ceiling. 1226A0355
Kit includes: (2) Stainless Steel Ceiling Mount Brackets, bolts and nuts.

Duct Mount Kit MPD Interface Adapter
Calibration Gas Flow Adapter

S3KDMK 1226A0382 1226A0411

The duct mounting kit (S3KDMK) can be used with the EC sensor to allow detection of O2, CO, H2 and H2S gases in ducts.
When combined with the MPD Interface Adapter (1226A0382), the duct mounting kit can accommodate the MPD to detect flammable gases in a duct application. The duct mount kit includes the adapter, gasket and required fasteners. The MPD Interface Adapter includes only the adapter and requires the S3KDMK duct mount kit.
MPD

02000-A-1645 Sensepoint HT

00780-A-0035 705

Calibration Cup

S3KCAL

XNX EC - The calibration cup is used to apply calibration test gas to the sensor. It push fits onto the bottom of the sensor and can be fitted without removing the weatherproof cover.

Section 6 - Specifications

154

XNX Universal Transmitter

Accessory/Spare Weatherproof Cap Extreme Weather Protector Collecting Cone Remote Gassing Kit

Part Number
Included XNX EC 02000-A-1640 MPD 02000-A-1640 Sensepoint 02000-A-1635 705

Description The weatherproof cap protects the XNX sensors from harsh weather.

SPXCDWP

Sensor XNX-EC or MPD; the weather protection is designed to protect the sensor from environmental conditions in outdoor exposure applications.

S3KCC XNX EC

02000-A-1642 MPD 02000-A-1642 Sensepoint 02000-A-1642 705

The collecting cone improves detection of lighter-than-air gases such as hydrogen and methane.

1226A0354

The Remote Gassing Kit enables gas to be applied remotely for performing functional response checks.
Kit Includes: 50' Teflon® tubing, mounting bracket, tube cap and device adapters in 1/4" and 1/8" ID to attach to bump test ports on the weatherproof cap of your device.

Remote MPD Mounting

2441-0022 UL/CSA Aluminum Junction Box 00780-A0100 ATEX/IEC Junction Box (3) M20, (1) M25 entries. "Ex e" ATEX IEC Approval

Terminal Block/Shorting Jumpers
Section 6 - Specifications

Contact HA

Terminal block jumpers provide an electrical connection without connection to the Personality Board. Install the jumpers between pins 1 and 2 and between pins 3 and 4 to support multi-node wiring.

155

XNX Universal Transmitter

Accessory/Spare Stopping Plugs

Part Number

Description

1226-0257

M25 Plug w/protective cap and O-ring. (Certified for use with XNX Universal Transmitter only)

1226-0258 3/4 NPT w/protective cap. (Certified for use with XNX Universal Transmitter only)

Replacement Cover O-ring

0235-1266 Replacement O-ring for the XNX front cover

Pluggable Terminal Blocks Magnetic Wand/Screwdriver

1226A0302 1226A0304 1226A0305 1226A0306 1226A0307 1226A0303
1226-0254

Terminal Block Ass'y 6-Pin XNX EC Terminal Block Ass'y 9-Pin XNX mV IR Terminal Block Kit Includes: 9-Pin and 2-Pin Terminal Blocks Relay Terminal Block Kit Includes: 9-Pin and 2-Pin Terminal Blocks Terminal Block Ass'y 10-Pin XNX Modbus Terminal Block Ass'y 6-Pin FFB
Replacement wand for front panel access

Ferrite Bead

0060-1051 Bead Ferrite MV XNX

Foundation Fieldbus Ground Cable
Small Screwdriver

0310-0041 Cable Ground Foundation Fieldbus XNX

1226-0408

Replacement screwdriver for use on Terminal Block TB2 and TB4 (IR Personality and Relay Option)

Section 6 - Specifications

156

XNX Universal Transmitter

Accessory/Spare Weather Housing Weather Housing

Part Number

Description

0200-A-1635 For use with Series 2000, SensePoint, and SignalPoint EEC Sensor Products

0200-A-1640 For use with Series 2000, SensePoint, and SignalPoint Combustible Sensor Products

Section 6 - Specifications

157

XNX Universal Transmitter
7 Control Drawings

XNX Universal Transmitter Technical Manual

159

XNX Universal Transmitter
7.1 XNX UL/INMETRO

Section 7 - Control Drawings

159

XNX Universal Transmitter

Section 7 - Control Drawings

160

XNX Universal Transmitter

Section 7 - Control Drawings

161

XNX Universal Transmitter
XNX UL/CSA/FM

Control Drawings

162

XNX Universal Transmitter

18-32 VDC 62W max

+V 1-1 1-2
-V 1-3 1-4
+ mA 1-5 - mA 1-6
EC Barrier J2

Control Drawings

163

XNX Universal Transmitter

OUTPUT Uo = 2415V Io = 136mA Po = 082W Lo = 14mH Co = 0122uF

INPUT Ui = 2185V Ii = 120mA Pi = 10W Li = 00mH Ci = 00uF

IS HART DEVICE INPUT V max (or Ui) I max (or Ii) P max, Pi Ci + Ccable Li + Lcable OUTPUT Voc or Vt (or Uo) Isc or It (or Io) Po Ca (or Co) La (or Lo)

TABLE 1

XNX HART INTERFACE OUTPUT Voc or Vt (or Uo) Isc or It (or Io) Po Ca (or Co) La (or Lo) INPUT V max (or Ui) I max (or Ii) P max, Pi Ci + Ccable Li + Lcable

OUTPUT

Voc or Vt (or Uo) = 588 V

Isc or It (or Io) = 84 mA

Po = 123 mW

Ca (or Co) = 10uF

La (or Lo) = 1 mH

INPUT V max (or Ui) I max (or Ii) P max, Pi Ci + Ccable Li + Lcable

Control Drawings

164

XNX Universal Transmitter
Remote Sensor Mount

Gas Type H2S ( L )

S ens or
Part No.
S3KXSH1SS or X NX X S H1SS , X NX X SH1FM

Gas Type O2

Sens or
Part No.
S3KXSO1SS or X NX X SO1S S, X NX X SO1FM

Gas Type CO

Sen s or
Part No.
S3KXSC1SS or X NX X S C1S S, X NX X SC 1FM

H2S( H)

S3KXSH2SS or X NX X S H2S S

NH3( L )

S3KXSA1SS or X NX X S A1S S

H2( L )

S3KXSG1SS or X NX X S G1S S

H2S( L L )

S3KXSH3SS or X NX X S H3S S

NH3( H)

S3KXSA2SS or X NX X S A2S S

H2( H)

S3KXSG2SS or X NX X S G2S S

S3KXSF1SS or X NX X S F1SS

Cl 2( H)

S3KXSL1SS or X NX X S L 1SS

HCl

S3KXSR1SS or X NX X SR1S S

S3KXSM 1SS or XNXXSM 1SS

C l 2( L )

S3KXSL2SS or X NX X S L 2SS

HCN

S3KXSY1SS or X NX X SY 1S S

S O2( L )

S3KXSS1SS or X NX X S S1S S

ClO2

S3KXSX1SS or X NX X S X 1S S

S3KXSZ1SS or X NX X SZ 1S S

S O2( H)

S3KXSS2SS or X NX X S S2S S

NO2

S3KXSN1SS or X NX X S N1S S

PH3

S3KXSP1SS or X NX X SP 1S S

Control Drawings

165

XNX Universal Transmitter
Appendix A - HART® Protocol

XNX Universal Transmitter Technical Manual

167

XNX Universal Transmitter
A.1 HART® Interface
The XNX Universal Transmitter is registered with the HART Communication Foundation.
Note: Only qualified service personel should perform the procedures in this section.

high a frequency (1200 Hz) to interfere with analog control equipment. Another novel feature of HART networks is that two masters can be present. The primary master is usually a distributed control system (DCS), programmable logic controller (PLC), or a personal computer (PC). The secondary master can be a handheld terminal. The XNX transmitter has been tested with the handheld Emerson field communicator.
Control System or Other Host Application
Handheld Terminal

Every XNX® gas sensor can communicate using the HART protocol (defined by the HART Communication Foundation at http://www. hartcomm.org). HART is unique among fieldbuses in that the digital signal is superimposed on a traditional 4-20 mA current loop. This provides the reliability of analog signaling with the advanced diagnostic capability of a digital device.
HART devices are usually connected as point-to-point networks. The analog output of the XNX transmitter can also be disabled to facilitate construction of multidrop, all-digital HART networks.

Multiplexer

Control System or Other Host Application

Barrier

Note: Instrument power is provided by an interface or external power source that is not shown

Handheld Terminal

Field Device
Figure 233. HART Point-to-point Mode
If HART is not needed, the unit can be used as a 4-20 mA transmitter. Since the transmitter is a slave, the internal modem will remain silent if no master signal is present. Additionally the HART signal is at too

Input/Output (I/O) System

Note: Instrument power is provided by an interface or external power source that is not shown

Field Devices

Figure 234. HART Multi-point Mode

The XNX device descriptor (DD) file provides HART users with data on the capabilities and features of the XNX Universal Transmitter. Select HART enabled devices are able to interface with XNX transmitters when connected via HART communication. A copy of the file is included on the Documentation CD. This DD file can be installed on HART-enabled Emerson field communicators using the Emerson Easy Upgrade Utility. The DD files located on the resource CD are compatible with the software integral to the transmitter. Older transmitters using earlier versions of software require previous versions of the DD files. Contact your local Honeywell representative with any questions regarding software compatibility.
During manufacturing, Honeywell configures the 8-digit HART tag to the XNX serial number. This can be used to confirm correct wiring from the transmitter to the control system. If desired, the HART tag can be modified. The fixed XNX serial number can also be read over HART.
For convenience, the transmitter presents the HART signal on two interfaces. The 1200 Hz AC signal is capacitively coupled to the main 20 mA analog output. This may be monitored at the control system

Appendix A - HART® Protocol

167

XNX Universal Transmitter

or at any point along the 20 mA loop. Additionally, the optional local HART interface (P/N: XNX-HIF) permits temporary connection of a HART terminal to the transmitter. This local HART port is transformercoupled to the main 20 mA output. This port is intrinsically safe and polarity insensitive. See Section 2.3.1 for more information. The internal HART modem functions as a high-impedance current source. Thus transferring the HART signal requires a certain minimum loop resistance between the slave and a low-impedance power supply. Normally, this resistance is supplied by the control system and so need not be explicitly added. However, special treatment is needed when the 20 mA output is not used and the local HART interface is needed. (An installer might choose to communicate using relays, Modbus®, or FoundationTM Fieldbus instead.) In this case, the supplied 510 ohm resistor must be fitted to create an "artificial" 20 mA loop. The resistor should be connected between TB-1 terminal 1-3 and terminal 1-6. Additionally, S1 and S2 should be placed in "source" configuration. This is shown schematically in Figure 237. The digital HART interface provides all of the capabilities of the local user interface. The XNX transmitter has been designed to use the portable Emerson field communicator with DevCom2000 software for Microsoft Windows® and Emerson AMS Intelligent Device Manager. Using HART, a service person can display information, test, calibrate, and configure. A map of the HART menus is provided in Section A.1.3.
ATEX Conditions for Safe Use of Intrinsically Safe HART Handheld Devices
For installations in which both the Ci and li of the intrinsically safe apparatus exceeds 1% of the Co and lo parameters of the associated apparatus (excluding the cable), 50% of Co and lo parameters are applicable and shall not be exceeded, i.e., the Ci of the device plus the C of the cable must be less than or equal to 50% of the Co of the associated apparatus, and the li of the device plus the l of the cable must be less than or equal to 50% of the lo of the associated apparatus.

LOCAL

J1 HART

20 mA Operation

S1 S2 Source Sink S1 S2 Isolated
+V 1-1

4-20mA MPD, 705 16-32 VDC HART Sensepoint 6.5W max.

1-2

-V 1-3

1-4

+mA 1-5

-mA 1-6

Sense 1-7

0v 1-8

Ref 1-9

mV TB-1

J1 - Local HART Option Connector
Figure 235. XNX mV Personality Board Terminal Blocks, Jumper Switches
and Wire Color Chart

S1 and S2 - 20mA Output Jumper Switch

Source

Sink

Isolated

510 Ohm Resistor

XNX mV TB-1

78 9

TB-1 Desc.

24v

Gnd

5 20mA +

6 20mA -

Sense

Ref

mV Sensor Type

Catalytic Bead

MPD w/IR

MPD

705 705HT

S'point S'point HT

S'point PPM

IR 5%

CO2

CH4

IR Flam

Wire Color from Sensor

See Section 2.2.4.

Brown White Blue

Red Green Blue Internal Ground

Brown White Blue

Appendix A - HART® Protocol

168

XNX Universal Transmitter
A.1.1 HART Sink, Source, and Isolated Wiring
The following figures illustrate the proper HART Multidrop wiring for the XNX.
HART Handheld Communicator

S1 S2

Source

Sink Isolated

+V 1-1

4-20mA 16-32 VDC HART 6.2W max.

S1 S2 Source Sink S1 S2 Isolated
+V 1-1 1-2
-V 1-3 1-4
+mA 1-5 -mA 1-6 EC TB-1
XNX Address 7

Other loop + powered -
HART devices

4-20mA 16-32 VDC HART 6.2W max.

S1 S2 Source Sink S1 S2 Isolated
+V 1-1 1-2
-V 1-3 1-4
+mA 1-5 -mA 1-6 EC TB-1
XNX Address 2

16-32 VDC HART 6.2W max.

4-20mA

S1 S2 Source Sink S1 S2 Isolated
+V 1-1 1-2
-V 1-3 1-4
+mA 1-5 -mA 1-6 EC TB-1
XNX Address 1

250 minimum

+ 24
VDC -

NOTE: Only addresses greater than 0 are valid for multidrop HART networks

Appendix A - HART® Protocol

Figure 236. XNX Multidrop HART Network Wiring - XNX Sink
169

External HART Automation Equipment

XNX Universal Transmitter

Emerson Field Communicator

S1 S2 Source Sink S1 S2 Isolated
+V 1-1

S1 S2

Source

Sink Isolated

+V 1-1

4-20mA 16-32 VDC HART 6.2W max.

1-2

-V 1-3

1-4

+mA 1-5

-mA 1-6

EC TB-1

XNX Address 7

Other loop + powered -
HART devices

S1 S2

Source

Sink Isolated

+V 1-1

1-2

-V 1-3

4-20mA 16-32 VDC HART 6.2W max.

1-4 +mA 1-5 -mA 1-6

EC TB-1

XNX Address 2

S1 S2

Source

Sink Isolated

+V 1-1

1-2

-V 1-3

16-32 VDC HART 6.2W max.

4-20mA

1-4 +mA 1-5 -mA 1-6

EC TB-1

XNX Address 1

250 minimum

+ 24
VDC -

NOTE: Only addresses greater than 0 are valid for multidrop HARTnetworks

Appendix A - HART® Protocol

Figure 237. XNX Multidrop HART Network Wiring - XNX Source
170

External HART Automation Equipment

XNX Universal Transmitter

4-20mA 16-32 VDC HART 6.2W max.

HART Handheld Communicator
S1 S2 Source Sink S1 S2 Isolated
+V 1-1 1-2
-V 1-3 1-4
+mA 1-5 -mA 1-6 EC TB-1
XNX Address 7

Other loop + powered -
HART devices

S1 S2 Source Sink S1 S2 Isolated
+V 1-1

4-20mA 16-32 VDC HART 6.2W max.

S1 S2 Source Sink S1 S2 Isolated
+V 1-1 1-2
-V 1-3 1-4
+mA 1-5 -mA 1-6 EC TB-1
XNX Address 2

16-32 VDC HART 6.2W max.

4-20mA

S1 S2 Source Sink S1 S2 Isolated
+V 1-1 1-2
-V 1-3 1-4
+mA 1-5 -mA 1-6 EC TB-1
XNX Address 1

+ 24
VDC -

250 minimum

+ 24
VDC -

NOTE: Only addresses greater than 0 are valid for multidrop HART networks

Appendix A - HART® Protocol

Figure 238. XNX Multidrop HART Network Wiring - Isolated
171

External HART Automation Equipment

XNX Universal Transmitter
A.1.2 DevComm PC-based HART Interface Overview
The XNX-HART interface facilitates remote access to all features of the local user interface including displaying status, testing, calibrating, and configuring. A device descriptor (DD) file is available to adapt standard tools for use with the transmitter.
Warning: After changing parameters with a handheld device, verify that the parameter settings are correct at the transmitter.
The following screens show some of the features of these two interfaces for the XNX transmitter.

Figure 240. XNX data displayed on an Emerson field communicator
Security level 1 is required to select the display language and to adjust the date and time. All other configuration options require security level 2 access.

Figure 239. Presentation of XNX Data by DevComm2000

Appendix A - HART® Protocol

172

XNX Universal Transmitter

Functions in the Configure Menu and the security levels required to change them are explained in this table.

Symbol

Description

Select Language

Set Date & Time

Set mV Sensor Type

Security Level 1
1
2

Symbol

Description

Calibration Interval Accept New Sensor Type Beam Block Options

Set mA Sensor Type

Path Length

Gas Selection

Unit ID

Range & Alarms

Latching/Non-

latching

Set Units

Relay Options Fieldbus Options Configure Security

mA Levels

Security Level 2 2 2 2 2 2 2 2

Functions
Configuration Summary
All of the HART status information can be extracted from the transmitter as a PDF or text file. This includes voltages, signal strengths, and configuration settings. An example summary, which required only 5 mouse clicks, is shown below.

Appendix A - HART® Protocol

173

Figure 241. HART status information

XNX Universal Transmitter
Information Screens
All of the information in the Configuration Summary can be viewed live on various informational displays. For example, alarm settings are shown in Figure 242.

Figure 243. HART Event History Display
Test
The test menu provides methods for inhibiting the output, exercising the analog output, or simulating alarms or faults. These methods simplify common tasks by providing a simple user interface.

Figure 242. Typical Alarm Settings Display
Event History
The XNX transmitter maintains a record of all significant events. All alarms, all warnings, and all faults are recorded. Additionally, over sixty types of informational events are defined to record important transactions such as recalibrations or configuration changes. One-thousand records are maintained and every event has a timestamp.

Appendix A - HART® Protocol

174

Figure 244. Alarm Simulation

XNX Universal Transmitter
Calibration
The calibration menu permits calibrating zero or span and bump testing. Additionally, when fitted with a Searchline EXCEL sensor, the Calibrate menu displays the optical signal strength for mechanical alignment. The gas calibrate operation is shown below.

Figure 246. Set Range and Alarm

Figure 245. Gas Calibrate Method
Caution: Do not back out of a menu selection while a calibration is in progress.

Conclusion
The XNX HART interface adds value by facilitating remote operation of Honeywell Analytics gas sensors. All functions available locally are also available over HART.

Configuration

All user settings of the XNX transmitter can be made either at the local user interface or over HART. The configuration menu facilitates convenient setup of alarm levels as shown in Figure 246. Methods are also provided to set time, units, and other
parameters.

Appendix A - HART® Protocol

175

XNX Universal Transmitter

A.1.3 Handheld Online Menu
When HART communication is established with the XNX, the Root menu is displayed:

Main Menu

Online...
1 Device Setup 2 Concentration %LEL 3 PV Alrm Typ 4 Monitoring State 5 Reset Alarm Fault(s) 6 Gas Name 7 Sensor Type

0.00
Normal Monitoring None
Methane Optima

Device Setup...
1 User Login 2 XNX Display... 3 Display Menu... 4 Test Menu... 5 Calibration... 6 Configuration... 7 Device Status... 8 Detailed Setup... 9 Review

Online...
1 Device Setup 2 Concentration %LEL 3 PV Alrm Typ 4 Monitoring State 5 Reset Alarm Fault(s) 6 Gas Name 7 Sensor Type

0.00
Normal Monitoring None
Methane Optima

Device Setup...
1 User Login 2 XNX Display... 3 Display Menu... 4 Test Menu... 5 Calibration... 6 Configuration... 7 Device Status... 8 Detailed Setup... 9 Review

Online...
1 Device Setup 2 Concentration %LEL 3 PV Alrm Typ 4 Monitoring State 5 Reset Alarm Fault(s) 6 Gas Name 7 Sensor Type

0.00
Normal Monitoring None
Methane Optima

Device Setup...
1 User Login 2 XNX Display... 3 Display Menu... 4 Test Menu... 5 Calibration... 6 Configuration... 7 Device Status... 8 Detailed Setup... 9 Review

Key Sub Menus
Current Login Level: Default Want to change Login Level 1 Logout [Level 0] 2 Login [level1/2/3] 3 Exit

XNX Display...

1 Concentration

0.00 %LEL

2 PV Alrm Typ

None

3 Fault/Warn Number

4 Monitoring State Normal Monitoring

5 Time Date Format mm/dd/yy hh:mm:ss

6 Time Date Stamp 09/18/08 11:57:57

7 Gas Name

Methane LEL

Display Menu...
1 Reset Alarm Faults 2 Event History 3 Display Basic Info... 4 Display SW Info... 5 Display Optical Performance 6 Display mA Settings 7 Display Alarm Settings 8 Display Maintenance Status 9 Display Installation Status
XNX HART Basic Menus (cont'd)

Appendix A - HART® Protocol

176

Display Basic Info...
1 Gas Name Methane LEL 2 XNX ID TOWER

SOUTH

XNX Universal Transmitter

Main Menu

Online...
1 Device Setup 2 Concentration %LEL 3 PV Alrm Typ 4 Monitoring State 5 Reset Alarm Fault(s) 6 Gas Name 7 Sensor Type

0.00
Normal Monitoring None
Methane Optima

Device Setup...
1 User Login 2 XNX Display... 3 Display Menu... 4 Test Menu... 5 Calibration... 6 Configuration... 7 Device Status... 8 Detailed Setup... 9 Review

Online...
1 Device Setup 2 Concentration %LEL 3 PV Alrm Typ 4 Monitoring State 5 Reset Alarm Fault(s) 6 Gas Name 7 Sensor Type

0.00
Normal Monitoring None
Methane Optima

Device Setup...
1 User Login 2 XNX Display... 3 Display Menu... 4 Test Menu... 5 Calibration... 6 Configuration... 7 Device Status... 8 Detailed Setup... 9 Review

Display Menu... 1 Reset Alarm Faults 2 Event History 3 Display Basic Info... 4 Display SW Info... 5 Display Optical Performance 6 Display mA Settings 7 Display Alarm Settings 8 Display Maintenance Status 9 Display Installation Status
XNX HART Basic Menus (cont'd)

Display SW Info...
1 Dev id 1081234 2 Fld dev rev 1 3 Sensor S/w Ve r 4 Sensor s/n 0 5 Gas Name Methane LEL 6 XNX ID TOWER

48 SOUTH

Display Optical Performance...
1 Signal Strength 0.96 2 Ref Sig Strength 1.12 3 Sam Sig Strength 1.06 4 Baseline 0.92 5 Dynamic Reserve 96 % 6 Window Temp 28 degC

Appendix A - HART® Protocol

177

XNX Universal Transmitter

Main Menu

Online...
1 Device Setup 2 Concentration %LEL 3 PV Alrm Typ 4 Monitoring State 5 Reset Alarm Fault(s) 6 Gas Name 7 Sensor Type

0.00
Normal Monitoring None
Methane Optima

Device Setup...
1 User Login 2 XNX Display... 3 Display Menu... 4 Test Menu... 5 Calibration... 6 Configuration... 7 Device Status... 8 Detailed Setup... 9 Review

Online...
1 Device Setup 2 Concentration %LEL 3 PV Alrm Typ 4 Monitoring State 5 Reset Alarm Fault(s) 6 Gas Name 7 Sensor Type

0.00
Normal Monitoring None
Methane Optima

Device Setup...
1 User Login 2 XNX Display... 3 Display Menu... 4 Test Menu... 5 Calibration... 6 Configuration... 7 Device Status... 8 Detailed Setup... 9 Review

Online...
1 Device Setup 2 Concentration %LEL 3 PV Alrm Typ 4 Monitoring State 5 Reset Alarm Fault(s) 6 Gas Name 7 Sensor Type

0.00
Normal Monitoring None
Methane Optima

Device Setup...
1 User Login 2 XNX Display... 3 Display Menu... 4 Test Menu... 5 Calibration... 6 Configuration... 7 Device Status... 8 Detailed Setup... 9 Review

Appendix A - HART® Protocol

Key Sub Menus
Display Menu... 1 Reset Alarm Faults 2 Event History 3 Display Basic Info... 4 Display SW Info... 5 Display Optical Performance 6 Display mA Settings 7 Display Alarm Settings 8 Display Maintenance Status 9 Display Installation Status
Display Menu... 1 Reset Alarm Faults 2 Event History 3 Display Basic Info... 4 Display SW Info... 5 Display Optical Performance 6 Display mA Settings 7 Display Alarm Settings 8 Display Maintenance Status 9 Display Installation Status
Display Menu... 1 Reset Alarm Faults 2 Event History 3 Display Basic Info... 4 Display SW Info... 5 Display Optical Performance 6 Display mA Settings 7 Display Alarm Settings 8 Display Maintenance Status 9 Display Installation Status
XNX HART Basic Menus (cont'd)
178

Display mA Settings...
1 Overrange Current 21 mA 2 Warning Current 3 mA 3 Inhibit Current 2 mA

Display Alarm Settings...

1 PV URV

100.000

%LEL

2 PV LRV

0.000

%LEL

2 Alarm Thresholds 1

%LEL

3 Alarm Thresholds 2

%LEL

4 Alarm Config

0x0C

5 Board Type

Modbus/RTU

Interf...

Display Maintenance Status..

1 Sensor Type 2 Sensor Life

ECC 0 Hours

XNX Universal Transmitter

Main Menu

Online...
1 Device Setup 2 Concentration %LEL 3 PV Alrm Typ 4 Monitoring State 5 Reset Alarm Fault(s) 6 Gas Name 7 Sensor Type

0.00
Normal Monitoring None
Methane Optima

Device Setup...
1 User Login 2 XNX Display... 3 Display Menu... 4 Test Menu... 5 Calibration... 6 Configuration... 7 Device Status... 8 Detailed Setup... 9 Review

Online...
1 Device Setup 2 Concentration %LEL 3 PV Alrm Typ 4 Monitoring State 5 Reset Alarm Fault(s) 6 Gas Name 7 Sensor Type

0.00
Normal Monitoring None
Methane Optima

Device Setup...
1 User Login 2 XNX Display... 3 Display Menu... 4 Test Menu... 5 Calibration... 6 Configuration... 7 Device Status... 8 Detailed Setup... 9 Review

Test Menu... 1 Inhibit Long-term 2 Force mA O/P 3 Alarm/Fault Simulation
XNX HART Basic Menus (cont'd)

Display Installation Status...

1 Power Supply Volt... mVolt 2 Operating Voltage mVolt 3 Sensor I/P Voltage mVolt 4 Sensor Voltage mVolt 5 XNX Temp 33 degC 6 Sensor Temp 41 degC 7 Loop current 4.000 mA

19403 3297
0 0

Appendix A - HART® Protocol

179

XNX Universal Transmitter

Main Menu

Online...
1 Device Setup 2 Concentration %LEL 3 PV Alrm Typ 4 Monitoring State 5 Reset Alarm Fault(s) 6 Gas Name 7 Sensor Type

0.00
Normal Monitoring None
Methane Optima

Device Setup...
1 User Login 2 XNX Display... 3 Display Menu... 4 Test Menu... 5 Calibration... 6 Configuration... 7 Device Status... 8 Detailed Setup... 9 Review

Online...
1 Device Setup 2 Concentration %LEL 3 PV Alrm Typ 4 Monitoring State 5 Reset Alarm Fault(s) 6 Gas Name 7 Sensor Type

0.00
Normal Monitoring None
Methane Optima

Device Setup...
1 User Login 2 XNX Display... 3 Display Menu... 4 Test Menu... 5 Calibration... 6 Configuration... 7 Device Status... 8 Detailed Setup... 9 Review

Key Sub Menus
Calibration...
1 Gas Calibrn 2 Bump Test 3 Calibrate mA Offset 4 Soft Reset 5 Align Excel

Configuration...

1 Config Security

2 Measure as mg/m3

3 Set Range & Alarm

4 Config Alarm Mode

5 Fieldbus Option

6 Set mV Sensor Type

7 Gas Selection

8 Config mA Status L...

9 Set Calibrn Interval

XNX ID

SOUTH TOWER

Conc Unit

%LEL

Time Date Format mm/dd/yy hh:mm:ss

Set Date-Time

XNX HART Basic Menus (cont'd)

Appendix A - HART® Protocol

180

XNX Universal Transmitter

Main Menu

Online...
1 Device Setup 2 Concentration %LEL 3 PV Alrm Typ 4 Monitoring State 5 Reset Alarm Fault(s) 6 Gas Name 7 Sensor Type

0.00
Normal Monitoring None
Methane Optima

Device Setup...
1 User Login 2 XNX Display... 3 Display Menu... 4 Test Menu... 5 Calibration... 6 Configuration... 7 Device Status... 8 Detailed Setup... 9 Review

Online...
1 Device Setup 2 Concentration %LEL 3 PV Alrm Typ 4 Monitoring State 5 Reset Alarm Fault(s) 6 Gas Name 7 Sensor Type

0.00
Normal Monitoring None
Methane Optima

Device Setup...
1 User Login 2 XNX Display... 3 Display Menu... 4 Test Menu... 5 Calibration... 6 Configuration... 7 Device Status... 8 Detailed Setup... 9 Review

Appendix A - HART® Protocol

Key Sub Menus
Detailed Setup... 1 Output Condition... 2 Device Information...

Review
1 Manufacturer 2 Model 3 Sensor Type 4 PV 5 Info Min Range 6 Info Max Range 7 PV % Range 8 PV Xfer fnctn 9 PV
PV Alrm typ Tag Long tag Descriptor Message Final asmbly num Dev id Universal rev Fld dev rev Software rev Poll addr Loop Curnt Mode Cfg chng count Num req preams Num resp preams
XNX HART Basic Menus (cont'd)

Honeywell XNX
Optima %LEL
100.00 %LEL 100.00 %LEL
0.000 % Linear
4.000 mA None
S. TOWER
SOUTH TOWER CRACKING TOWER
0 1081234
6 1 38 0 Enabled 6 9 7

181

XNX Universal Transmitter
Appendix B - Modbus® Protocol

XNX Universal Transmitter Technical Manual

183

XNX Universal Transmitter

B.1 Modbus and the XNX transmitter
The XNX® gas sensor may be fitted with the optional Modbus® interface card (P/N XNX-MB). Authoritative information on the Modbus protocol can be found at www.modbus.org. The XNX supports Modbus/RTU over an RS-485 physical layer. The interface is isolated and includes a switchable 120 Ohm termination resistor. Baud rates from 1200 to 38,400 are supported with 19,200 as the default (8 data bits, even parity, 1 stop bit).
Most of the operations that are possible with the HART® and local user interfaces can also be performed using the Modbus interface. This includes test, calibration and configuration operations. This appendix describes only how to monitor XNX status using Modbus.
The zero calibration procedure should be performed prior to the span calibration. The calibration procedure is in Section 3.2.1.
Some of the relevant Modbus holding registers are listed in the following table. In most installations, the XNX transmitter reads only the first five registers (four data). The assignment of the first eight registers (or six data) is identical to the Honeywell Analytics XCD gas sensor.
Building an effective Modbus automatic gas detection system requires checking for faults (using iFaultWarnNumber or iAlmFltLev) and checking iMonitoringState to confirm that the XNX is not inhibited or in calibration. The pseudo code example in Figure 247 suggests computation that should be made in external automation equipment.

See Section 2.3.4 for information on installing the optional Modbus hardware. See Section 2.5.1 for information on setting the Modbus baud rate and address using the local user interface. See Section A.1.1 for information on setting the Modbus parameters using the HART interface.

if(

((fCurrentConc < TLV) or (iAlmFltLev & 3 == 0))

// low concentration

and

((iFaultWarnNumber < 1000) or (iAlmFltLev & 64 == 0))

// no fault

and

((iMonitoringState == 1) or (iMonitoringState == 7))

// not inhibited

and

(

(Transport layer SW indicates good Comm.)

(iHeartBeat changes every 5 seconds)

)

// Modbus link healthy

) Then the area is safe.

Figure 247. Modbus Pseudo Code Example

Modbus connections are shown in the flollowing figure.

Appendix B - Modbus Protocol

183

Out In

XNX Universal Transmitter
S5 EOL Term RT =120
TB-3 Modbus
3-1 + 3-2 + 3-3 3-4 3-5 A 3-6 A 3-7 B 3-8 B 3-9 S 3-10 S
Use shorting jumper supplied to maintain connection during service
Figure 248. Modbus connections

Appendix B - Modbus Protocol

184

XNX Universal Transmitter

B.2 Modbus Registers

Modbus Holding Register Address
40001
40002

Datatype
Int16 Int16

40003 to 40004 Float32

40005 int16

40006 int8

Variable Name ID ID
fCurrentConc
iFaultWarnNumber
iAlmFltLev

Description
MSB always 0x24 to facilitate automatic identification. LSB repeat of Modbus address.
Identical to 40001
The reported gas concentration in current measurement units. For example, methane at 50% LEL would be reported as 50.0 here. This concentration is forced to zero during inhibit mode.
This is the integer representation of the fault status. If any fault exists this will take a value in the range 1000 to 1999. Otherwise, if any warning exists, this will take a value in the range 1 to 999. Normally, this has the value zero. For example, if the XNX temperature is out of range, this will take the value 1103.
This register contains 4 meaningful bits regarding the presence of alarms or faults. The bit assignments are as follows: Bit 0: AL1 active Bit 1: AL2 active Bit 4: Warning active Bit 6: Fault Active All others: For future expansion

Appendix B - Modbus Protocol

185

XNX Universal Transmitter

Modbus Holding Register Address

Datatype

40007 uint8

40008 int16 40009 to 40010 float32

Variable Name
iMonitoringState
iHeartBeat fSensorLifeDays

Description
This has the following meanings:
0 reserved 1 normal monitoring 2 in warm-up 3 long-term inhibit 4 alarm simulation 5 fault simulation 6 Loop current stimulated 7 in warning MFlt 8 in Instrument Flt 9 in beam block 10 in bump test 11 short-term inhibit 12 performing zero calibration 13 performing span calibration 14 in pre-zero calibration 15 in pre-span calibration 16 in post-zero calibration, successful 17 in post-span calibration, successful 18 in post-zero calibration, failed 19 in post-span calibration, failed 20 in align Excel mode 21- for future expansion 255
This Heartbeat is provided to facilitate detection of communications problems in programming environments where the transportlayer communication error information is unavailable. This increments approximately every 5 seconds.
It is the responsibility of the system integrator to notify plant personnel if a Modbus master fails to communicate with the XNX. This register can facilitate this notification.
This indicates the time remaining before the ECC sensor must be calibrated or replaced.

Appendix B - Modbus Protocol

186

XNX Universal Transmitter

Modbus Holding Register Address

Datatype

Variable Name

40011 int8

iMeasurementUnits

40012 to 40014 40015 40016 40017
40018 to 40026 40027 to 40035

string[5] int8 int8 int8
string[18] string[18]

strGenericUnits iWinTemp iTransTemp
iSensorTemp strTransmitterID
sDateTime

40036 int8

iSensorType

40037 float32

f_mA_Out

Appendix B - Modbus Protocol

Description
The meaning of this datum is as enumerated below:
0 Default 1 mg/m3 2 g/m3 3 %vol 4 ppm 5 %LEL 6 UEG 7 Ratio 8 %LEL*M 9 ppm*m 10 EG*m 11 %vol * meter 12 to for future expansion 255
User-defined 5 character string description for installed generic mA sensor
If a Searchline Excel is fitted, this is the temperature of the window. Otherwise, this is the temperature of the window.
Temperature of the XNX in Celcius.
Temperature of the sensor (Optima, Excel, ECC, etc)
User-configured transmitter name.
Format is "mm/dd/yy hh:mm:ss". Month and day inverted if so configured.
The meaning of this datum is as enumerated below
1 mV Bridge 2 Electrochemical Cell with toxic cartridge 3 Electrochemical Cell with O2 cartridge 4 Optima 5 Excel 7 generic mA input Others for future expansion
The current produced by the XNX in milliamperes.
187

XNX Universal Transmitter

Modbus Holding Register Address

Datatype

Variable Name

40038 int16

iTransVoltage24000

40039 int16

iTransVoltage_3300

40041 int16

iOptional3300

40042 int16

iPersonality3300

40043 int16

iPersonality5000

40044 int16

iSensVoltage24000

40045 int16

iSensVoltage_5000

40046 to 40079 Contact HA for details.

40080 to 40081 int32

iTransSn

40082 to 40083 int32

iSensSn

40084 int8

iSensSwVer

40085 int8

iTransSwVer

40086 to 40155 Contact HA for details.

Description
The voltage supplied to the XNX at the nominal 24.0 volt input, in millivolts. The voltage on a nominal 3.3 volt supply in the XNX, in millivolts. The voltage on a nominal 3.3 volt supply in the XNX option board, in millivolts. The voltage on a nominal 3.3 volt supply in the XNX personality board, in millivolts. The voltage on a nominal 5.0 volt supply in the XNX personality board, in millivolts. The voltage supplied to an Optima or Excel sensor at the nominal 24.0 volt input, in millivolts. The voltage on a nominal 5.0 volt supply in Optima or Excel, in millivolts.
Serial number of XNX. Serial number of Optima, Excel, or ECC cartridge. Integer representation of software version in external sensor or mV personality module Software version of XNX.

Appendix B - Modbus Protocol

188

XNX Universal Transmitter

Appendix B - Modbus Protocol

189

XNX Universal Transmitter
Appendix C - Warranty

XNX Universal Transmitter Technical Manual

191

XNX Universal Transmitter

Warranty Statement
All products are designed and manufactured to the latest internationally recognized standards by Honeywell Analytics under a Quality Management System that is certified to ISO 9001.
The XNX® Universal Transmitter is warranted by Honeywell Analytics (herein referred to as `HA') to be free from defects in material or workmanship under normal use and service for:

Device

Warranty Terms

XNX Universal Transmitter (excludes consumables)

36 months from date of shipment to buyer

XNX Electrochemical Sensors 12 months from date of commissioning by an approved Honeywell Analytics representative

(Part Number XNX-XS****)

Multi-Purpose Detector (MPD) 18 months from date of shipment from Honeywell Analytics, whichever is sooner

Service in the field or at the customer's premises is not covered under these warranty terms. Time and travel expenses for on-site warranty services will be charged at Honeywell Analytics' normal billing rates. Contact your Honeywell Analytics Service Representative for information on Service Contracts.

Warranty Conditions
1. The Honeywell Analytics (HA) Limited Product Warranty only extends to the sale of new and unused products to the original buyer where purchased from HA or from a HA authorized distributor, dealer or representative. Not covered are: consumable items such as dry-cell batteries, filters and fuses or routine replacement parts due to the normal wear and tear of the product; any product which in HA's opinion has been altered, neglected, misused or damaged by accident or abnormal conditions of operation, handling, use or severe sensor poisoning; defects attributable to improper installation, repair by an unauthorized person or the use of unauthorized accessories/parts on the product
2. Any claim under the HA Product Warranty must be made within the warranty period and as soon as reasonably possible after a defect is discovered. If a Warranty claim is being sought it is the responsibility of the buyer to obtain a Service Event number (SE#) from HA and if practical return the product clearly marked with the SE# and a full description of the fault.
3. HA, at its sole discretion, may elect to send replacement goods to buyer prior to receipt of the defective goods. Buyer agrees to return defective goods with in 30 days or to pay for the replacement goods.
4. Buyer is responsible for transportation costs from the buyer's location to HA. HA is responsible for transportation costs from HA's location to the buyer.
5. If in the case of a fixed installation or when it is not practical to return the

product, the buyer should submit a claim to HA Service Department. A service engineer will attend on site on a day rate basis. Where a valid warranty claim is identified, the faulty product will be repaired or replaced free of charge. A warranty claim will be accepted if all conditions contained within this Warranty are met. 6. When, in the opinion of HA, a warranty claim is valid, HA will repair or replace the defective product free of charge and send it or any replacement back to the buyer. If, in the opinion of HA the warranty claim is not valid, HA will, at the option of the buyer, return the unit unaltered at the buyer's expense, repair the unit at the then prevailing rates, replace the unit with an appropriate replacement item at the then prevailing price, or discard the unit. HA reserves the right to charge for any attendance by its service engineer at the usual rates in force at the time the claim was received. 7. In no event shall HA's liability exceed the original purchase price paid by the buyer for the product.
Consumer Claims
If you purchased your HA product as a consumer, the above warranty conditions do not affect your rights under any applicable consumer protection legislation. Honeywell Analytics reserves the right to change this policy at any time. Contact Honeywell Analytics for current warranty information.

Appendix C - Warranty

191

XNX Universal Transmitter

Index

XNX Universal Transmitter Technical Manual

193

XNX Universal Transmitter

Symbols
4-20mA output 11, 37, 38 705, calibrating 94 705HT, calibrating 94
A
accessories 156 air speed, operating 132 alarm/fault simulation 81 alarm/fault status 83 alarms 67 alarm settings 83 approvals,
hazardous area 129 performance 129
B
battery life 128 baud rate 184 beam block options 72 bump test 22, 99, 100
Index

C
cable length 52 ports 128 recommended 132
cal gas range 134, 135, 133
Calibration 93106 calibration
for MPD sensors 101 gas 90 gas flow adapter 15, 156 interval 71 span 90, 91 zero 90, 91 cal point 130, 131, 133 cartridges catalytic bead replace-
ment 155 IR replacement 155 part numbers 130, 131,
133 Cautions 7 ceiling mount bracket kit
16, 156 cells, replacement 154 certifications 11, 12
by part number series 145147
chronological list, event, by day 88
collecting cone 16, 157 Communications 11 configuration
displaying 22

verifying 79 configure menu 61 construction material 128 Control Drawings 159166
remote sensor mount 165
controls 18 cover 12 cross-interferents 141
D
daisy-chain 32 date 22, 58, 81 dimensions 128 duct mount kit 16, 156
E
easy reset 78 EC. See electrochemical
sensor electrochemical sensor 40
cartridge, replacing with different type 106
cartridge, replacing with same type 105
cell 105 installation 40 operational life 98 enclosure aluminum 12
193

stainless steel 12 event history 81, 87
F
fieldbus options 77 settings 83, 86
finish, marine 12 flow housing 97 force relays 80, 81 Foundation Fieldbus 54 functional gas test.
See bump test
G
gas calibration 22, 90 gas data 83, 85 gases, selectable 61 gas name, changing 61 general status screen 19,
55 greases, airborne 141

H
H S sensors, calibrating 2 94
HART® devices 52 handheld online menu 1751179 interface 167169 local 14 local handheld 51 output 11 protocol 51, 167182
hex key 13 humidity 1284, 130, 131,
133 hydrogen sensors 142
I
information 7 information menu 83 inhibit 79 Installation and Operation
2788 installation
daisy-chain 31, 32 maximum distance 31,
33 multiple transmitter 31 single transmitter 31 types of 31 intrinsic safety 5, 14 Introduction 926 IP rating 1284, 130 IS. See intrinsic safety

XNX Universal Transmitter

J
jumpers 38 jumper switch 54
L
language 22 selecting 57
latching 69 LCD. See liquid crystal
display LDL. See lower detection
limit LED. See light emitting
diode light emitting diode 18,
20, 56 test 56 liquid crystal display 46,
56 lower detection limit 130,
131, 133
M
magnetic wand/screwdriver 13, 17, 158
main menu 22 Maintenance 103106 mA devices
generic, connecting 47

mA levels 70 mA
level settings 83, 86 output, calibrating 90,
100 output, forcing 80 sensor type 60 menu map 23 menu structure 20 messages fault 113119 informational 123124 warning 10841117 Modbus® 15, 54 interface card 184 protocol 183188 registers 186189 mounting kit, EC sensor
remote 41 mounting the enclosure
128 MPD. See multi-purpose
detector multi-purpose detector
155 flammable sensor 98 interface adapter 156 performance 142 sensor cartridge 104 multidrop mode 52 mV personality wiring 43 remote sensor 45

Index

N
navigation 18 non-latching. See latching notes 7 numeric format, selecting
69
O
off-scale readings 5 operating voltage 128 option board 38, 54 ordering information 152 organic vapors 141 O-ring, front cover 158
P
part numbers 83 parts list 13 passcode screens 79 personality board 36, 38
IR 48 mV 42, 44 personality, options, and
display (POD) 14, 36 personality wiring
electrochemical 39 IR 46, 48 pipe mount kit 15, 154 POD. See personality, op-
tions, and display point-to-point mode 51

power consumption 128 pressure
barometric 130, 131, 134 operating 132 product description 10, 12
R
range 67, 130, 131, 133 range/alarm settings 83,
85 real time clock 128 Reflex cell fault diagnosis
10 relay
data 86 options 14, 53 settings 83 remote sensor mounting kit 16,
156 gassing kit 16, 157 MPD mounting 157 response time 130, 131,
133
S
Safety 58 screwdriver 158 Searchline Excel 50, 56,
96 connecting 46

Searchpoint Optima Plus 50
connecting 46 security access level 59 security, configuring 78 Sensepoint HT, calibrat-
ing 94 sensors 1426
cross-sensitivity 135141 data 83, 85
location 28 mounting 28 performance 133 replacement 153 status 83, 85 types 59, 72 serial number 83 settings, displaying 22 shorting jumpers 157 signal 128 silicone compounds 141 simulation switch 38, 54 soft reset 101, 102 solvents 141 spares 156 Specifications 127-158 stopping plugs 12, 158 switch configuration 37 system conditioning 142

194

XNX Universal Transmitter

T
temperature 128, 130 ranges, extended 134 range, standard 134
terminal blocks 38, 54 connections 38 jumpers 157 pluggable 158
termination 128 test menu 79 time 22, 58, 83 transmitter
configuring 57 data 83, 84 information, displaying
21 status 83, 83 testing 22

W
warm-up time 132 Warnings 5 Warnings and Faults
107126 warranty 191192 weatherproof cap 16, 157 weather protector 17, 157 weight 128 wiring 30
isolated 37
X
XNX front panel 17
Z
zero calibration 184

U
units name, changing 61 units, setting 70 user interface 128

Index

195

Find out more www.honeywellanalytics.com
Americas Honeywell Analytics 405 Barclay Boulevard Lincolnshire, IL 60069 Tel: +1 847 955 8200 Toll free: +1 800 538 0363 Fax: +1 847 955 8208 detectgas@honeywell.com
Europe, Middle East, and Africa Life Safety Distribution AG Javastrasse 2 8604 Hegnau Switzerland Tel: +41 (0)1 943 4300 Fax: +41 (0)1 943 4398 Tel: +41 (0)1 943 4300 Fax: +41 (0)1 943 4398 gasdetection@honeywell.com
Technical Services ha.global.service@honeywell.com
www.honeywell.com

#508, Kolon Science Valley (l) 187-10 Guro-Dong, Guro-Gu Seoul, 152-050 Korea Tel: +82 (0)2 6909 0307 Fax: +82 (0)2 2025 0328 analytics.ap@honeywell.com

Please Note: While every effort has been made to ensure accuracy in this publication, no responsibility can be accepted for errors or omissions. Data may change, as well as legislation, and you are strongly advised to obtain copies of the most recently issued regulations, standards and guidelines. This publication is not intended to form the basis of a contract.
1998M0738 Revision 12 June 2015 © 2015 Honeywell Analytics

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