10-1
Chapter 10 Self-diagnosis
CAUTION
Do not perform the SFN communication when the process of the liquid level transmitter is in the
automatic control status. Doing so may cause the output to vary, resulting in a hazardous operation
status.
The self-diagnosis results saved into the liquid level transmitter are displayed using the communicator (CommStaff).
Serious Failure (Critical Status)
Diagnostic message Meaning Remedy
METER BODY FAULT AD conversion error The meterbody may be malfunctioning.
Contact Azbil or your salesperson for assistance.
CHARA PROM FAULT Character data error
SUSPECT INPUT Pressure sensor error
MDU/DAC COMP FAULT CPU error The electronics module may be malfunctioning.
Contact Azbil or your salesperson for assistance.
RAM FAULT RAM error
NVM FAULT NVM error
ROM FAULT ROM error
PAC FAULT Output circuit error
INVALID DATABASE Device setting data error
Minor Failure (Non-Critical Status)
Diagnostic message Meaning Remedy
SENSOR OVER TEMP Pressure sensor temperature
error
Modify the pressure sensor installation so that the
meterbody temperature is within the operating range. Or,
check the process.
EXCESS ZERO CORR The zero calibration amount
exceeds ±5 % when compared to
the time of shipment.
Check if the input pressure is zero or the span, and then
recalibrate.
EXCESS SPAN CORR The span calibration amount
exceeds ±5 % when compared to
the time of shipment.
IN OUTPUT MODE Constant current mode Cancel the constant current mode.
M.B. OVERLOAD OR Excessive pressure or meterbody
error
Check that the input pressure is within the specification
range.
If the input pressure is too great, reduce it or change the
device to a model with a larger range.
METER BODY FAULT Undefined* --
CORRECTS RESET Noncalibrated Calibrate the lower range value and upper range value of
the setting range.
NO DAC TEMP COMP Undefined* --
EXT.SWITCH FAULT Undefined* --
* This ALTJ9000 model does not use these items.
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