Xnx Universal Transmitter Quick Start Guide «VERIFIED · VERSION»
The XNX supports , meaning alarms are automatically silenced during calibration to prevent false alarms, and restored upon completion.
The from Honeywell Analytics is a highly versatile and robust gas detection platform. Designed for versatility, it supports electrochemical, infrared, and catalytic bead gas sensors, making it a critical component for safety systems in oil & gas, wastewater, and manufacturing industries.
Turn on your 24V DC supply. The Xnx display (if equipped) will light up with a boot sequence: Xnx Universal Transmitter Quick Start Guide
Danger: Ensure all power to the circuit is disconnected before opening the enclosure or making wiring terminations in hazardous locations. Enclosure Entry
The grounding symbol used in the wiring diagram is not explained. A note specifying whether chassis ground, earth ground, or signal ground is intended would prevent confusion. The XNX supports , meaning alarms are automatically
For in-depth procedures, please refer to the comprehensive Honeywell XNX Technical Handbook. If you'd like, I can provide:
Open the lower sensor compartment (separate from the main wiring area). Align the sensor’s 3-pin or 5-pin connector with the socket. Press firmly until it clicks. Do not force rotation—polarization keys prevent wrong insertion. Turn on your 24V DC supply
: Fasten the transmitter to the wall or pipe bracket using the mounting lugs on the back of the enclosure. Ensure the unit is vibration-free. Electrical Connections and Wiring
| Fault Code | Description | Recommended Action | |------------|-------------|--------------------| | F112 | 24 VDC supply bad | Check wiring of 24V power supply to transmitter and sensor supply operation | | F113 | Sensor internal 5V power supply defect (Excel) | Remove and return to Honeywell for repair | | F116 | Optima lamp failure / Excel loop failure | Check that supply voltage is stable. Check wiring between Optima/Excel and the transmitter. Check loop impedance | | F117 | Sensor loop failure (losing/has lost mA signal) | Check switches S3 and S4 are set correctly. Power down before changing switch settings. Perform a Soft Reset after resolving the issue | | F118 | Excel real‑time clock issue | Reset date/time in Excel, recycle Excel power. If not retained, return to Honeywell for repair | | W002 / F103 | Temperature error | Check for heat sources. Install sun shield or relocate transmitter. Verify temperature reading in Info → Transmitter Status menu | | W022 | mV sensor calibration needed | Generated after accepting a new mV sensor or changing gas selection. Perform a span calibration | | W015 | Excel internal software error | Remove and return to Honeywell for repair |
The XNX supports three main sensor technologies, each requiring a dedicated personality board: