Honeywell XNX User Manual

XNX Universal Transmitter Quick Start Guide
31
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
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.
For remote mount installations, the maximum distance between the XNX
Universal Transmitter and the Searchpoint Optima Plus unit is 33m (100 ft.),
using 18 gauge wire.
Searchpoint Optima Plus or Searchline Excel Wiring Recommendations
When wiring the XNX 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XNX
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. HArecommendsthatExcelorOptimaandtheXNXbewiredto
buildingground.Thesystemshouldbegroundedatonepointonly.
INSTALLATION TIP:
Always issue a soft reset after connecting the Optima and XNX for the rst time. The
soft reset is performed by accessing the XNX calibration menu.
NOTE:
When the soft reset is initiated for the Optima IR Sensor, the RS-485
communication will be interrupted temporarily and faults F120 and/or
F161 may be observed. RS-485 communication will be re-established
in a few minutes and the faults will be reset automatically in the Non-
Latching Mode. The faults must be reset manually in the Latching Mode.

Honeywell XNX Specifications

General

Ingress Protection	IP66/67
Product Type	Universal Transmitter
Enclosure Rating	IP66/67
Display	LCD
Communication Protocols	HART, Modbus, Foundation Fieldbus
Power Supply	24 VDC nominal, 18-32 VDC
Operating Temperature	-40°C to +65°C (-40°F to +149°F)
Material	Aluminum or Stainless Steel
Gas Types	Toxic, Oxygen, and Combustible gases
Output	4-20 mA
Relays	3 programmable relays
Approvals	ATEX, IECEx, UL, CSA
Sensor Compatibility	Electrochemical, catalytic, infrared, and other sensor types

Summary

2 Warnings

3 Mounting and Location of Detectors

3.1 Mounting the XNX Universal Transmitter

Details on how to mount the XNX Universal Transmitter using integral tabs or optional kits.

4 Wiring the XNX transmitter

4.1 General Wiring Considerations

Guidelines for proper wiring, considering voltage drops, noise, and grounding.

4.2 Distance Considerations for Installation

Information on installation distances based on wire gauge and transmitter configuration.

4.3 POD Connections

Details on connections available on the POD for personality boards.

4.4 4-20mA Output, Common Connections and Power

Configuration of 4-20mA output modes (Sink, Source, Isolated) and power connections.

4.5 Terminal Block Connections

Information on pluggable terminal blocks for customer connections.

4.6 EC Personality Wiring

Specific wiring instructions for EC personality boards.

4.6.1 XNX Electrochemical (EC) Sensor Installation

Step-by-step guide for installing the plug-in EC sensor.

4.6.2 XNX EC Sensor Remote Mounting Kit

Procedure for remotely mounting the EC sensor using a kit.

4.7 mV Personality Wiring

Wiring instructions for mV personality boards and connected sensors.

4.7.1 mV Remote Sensor Mounting

Guide for mounting mV sensors remotely from the transmitter.

4.8 IR Personality Wiring

Wiring instructions for IR personality boards and connected sensors.

4.8.1 Connecting a Searchpoint Optima Plus or Searchline Excel

Connecting IR sensors like Optima Plus or Searchline Excel to the XNX.

Searchline Excel and Searchpoint Optima Plus Remote Installation

Searchpoint Optima Plus or Searchline Excel Wiring Recommendations

4.8.2 Connecting Generic mA Device

6 Powering the XNX for the First Time

6.1 XNX Units Configured for EC, mV, and IR (except Searchline Excel)

6.2 XNX IR Units Configured for Searchline Excel

6.3 Configuring the XNX Universal Transmitter

7 The XNX Front Panel

7.1 Controls and Navigation

7.2 The General Status Screen

7.3 Entering the Menu Structure

8 Gas Calibration Menu

8.1 Calibration

8.1.1 Calibration Procedure

8.1.2 Zero and Span Calibration for XNX EC Sensors

8.1.3 Zero and Span Calibration of XNX EC Hydrogen Sulfide (H₂S) Sensors

8.1.5 Zero and Span Calibration for MPD Sensors

8.1.6 MPD Flammable Sensor

8.1.7 Cross Calibration procedure for MPD-CB1

8.1.8 Calibrating the 705/705HT

8.1.9 Calibrating the Sensepoint/Sensepoint HT

8.1.10 Calibrating the Searchline Excel and Searchpoint Optima Plus

8.2 Functional Gas Testing (Bump Test)

11 Warning Messages

12 Fault Messages

16 Specifications