ABB Endura APA592 Operating Instruction page 77

Endura APA592
pH / Redox (ORP) transmitter
Diagnostic Message
[Sub-error Message]
M060.037
Sensor diagnostic
signal input error
[Sensor cable diag
signal input error]
M080.039
Low pH measuring
electrode impedance
M082.040
Open snsr cable or
snsr out of solution
M084.038
Ground loops present or
shorted sensor cable
M089.039
Dirty sensor detected
Table 8.2 Diagnostic Messages (Continued)
OI/APA592–EN Rev. E
Possible Cause(s)
[Related Condition]
Sensor cable diag signal related
sensor board electronics
malfunction.
[ELECTRONICS]
Improper sensor wiring, dirty
terminal block, improper
configuration or broken or cracked
electrode glass.
[SENSOR]
Sensor wiring problems, improper
configuration of sensor diagnosis
option.
[PROCESS]
Sensor wiring problems, improper
configuration of sensor diagnosis
option.
[PROCESS]
Sensor is dirty.
[SENSOR]
8 Troubleshooting and Diagnostics
Corrective Action
If the sensor does not support diagnosis, disable
the sensor diagnosis feature – see page 63.
If the problem persists, contact factory.
Verify sensor wiring.
Verify terminal blocks and other connections are
free of any liquids, oils, scale or corrosion.
Verify configuration settings are correct.
Ensure diagnostics is set to OFF if the sensor
does not have a solution ground connection.
Verify glass electrode is intact.
Verify sensor responds to pH buffers.
Verify sensor wiring.
Verify sensor wiring is free of nicks, cuts, breaks
and/or open connections.
Verify configuration settings are correct.
Ensure diagnostics is set to OFF if the sensor does
not have a solution ground connection.
Verify sensor wiring.
Verify sensor wiring is not shorted to other wiring or
metal surfaces.
Verify terminal blocks and other connections are
free of any liquids, oils, scale or corrosion.
If a sensor extension is being used, verify
connections are dry and free of corrosion.
Verify configuration settings are correct.
Ensure diagnostics is set to OFF if the sensor does
not have a solution ground connection.
Verify sensor tip is clean.
Remove any foreign material.
Clean sensor.
Verify sensor responds to conductivity standard
solutions.
If sensor does not respond, electronically test
sensor.
Verify configuration.
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