Honeywell FS24X Plus - Appendix 7: Fault Conditions

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Appendix 7: Fault Conditions
When a Fault (Trouble) condition occurs, the HALO flashes in Yellow LED.
The Detector has the following outputs with a Fault condition:
l Fault Relay activation
l 4-20 mA (Sink, source or isolated) output
<=1 mA (Dirty Window Fault/Sensor Fault)
<=1 mA (All Other Faults)
l RS-485 FP2 Fault Notification
3
l RS-485 Modbus Fault Notification
3
l HART®
3
Only One Active Fault output from this group
Fault conditions can be caused by:
l Under Voltage Input Power (< 18 VDC).
l Over Voltage Input Power (> 32 VDC).
l Over Temperature (> 75° C or 167° F).
l Under Temperature (< -55° C or -67° F).
l One or more Microprocessor Failures.
l One or more Relay Coil Failures.
l Communication Fault.
l Electronic Self-Test Failure.
l Dirty Window Lens
l Sensor failures.
Honeywell® FS24XPlus™ | User Manual
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