Honeywell XNX - Page 121

XNX Universal Transmitter
Section 5 - Warnings/Faults
119
Fault Description
Appli-
cable
Sensors
Latching / Non-
Latching
Frequency of
Diagnostic
Event History Data Action For Resolution
F165
mACalibration
failure
all Latching 2seconds
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cali-
bration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�