Honeywell XNX-AM Series Technical Manual page 133

XNX Universal Transmitter
Appli-
Fault Description cable
Sensors
Option Part Num-
F159 All
ber Mismatch
Hardware Diagnos-
F160 ECC, mV
tic Failure
mA Input Indicates Optima,
F161
Fault Excel
Error reloading
F162 safety critical RAM All
block
Interrupt integrity
F163 All
fault
F164 mV Sensor failure mV
Warnings/Faults
Latching / Non- Frequency of
Latching Diagnostic
Only at powerup
or every 125 ms
Non-latching
when no option
board detected
Non-latching Main loop x2
Non-latching 1 second
Non-latching 2 seconds
Non-latching Main loop
Latching 1 second
Event History Data
Check that installed option matches the option indicated in the XNX part
Entire option part #
number, check wiring to Optima/Excel.
Gain1 high byte,
Replace defective EC cartridge or mV personality board.
Gain2 low byte
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 addi-
Input mA tional 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.
Note 3 Contact Honeywell Analytics' Service Department.
Note 3 XNX will reset if more than 600,000 successive errors occur.
mV bridge voltage or
Indicates that the sensor was changed or is bad. If the fault will not clear,
bridge current that
replace the sensor.
caused fault
131
Action For Resolution