Endress+Hauser Mycom S CPM 153 Operating Instructions Manual page 95

Mycom S CPM 153
Error NAMUR Error message
no. class
E027 Failure Compressed air fail-
ure
E 030 Failure SCS fault reference
electrode 1
E 031 Failure SCS fault reference
electrode 2
E 032 Failure Outside set slope
range for sensor 1
E 033 Failure Outside set zero point
for sensor 1
E 034 Failure Outside set offset
range for sensor 1
E 035 Failure Outside set slope
range for sensor 2
E 036 Failure Outside set zero point
for sensor 2
E 037 Failure Outside set offset
range for sensor 2
E038 Mainte- Delta limit exceeded
nance
E040 Mainte- SCC / electrode sta-
nance tus of sensor 1 bad
E041 Mainte- SCC / electrode sta-
nance tus of sensor 2 bad
E043 Mainte- Buffer difference
nance channel 1 too small
E044 Mainte- Meas. value channel
nance 1 unstable
E045 Failure Calibration aborted
E048 Mainte- Buffer difference
nance channel 2 too small
E049 Mainte- Meas. value channel
nance 2 unstable
E054 Mainte- Dosage time alarm
nance
Endress+Hauser
Possible causes / measures
Pressure below permitted minimum
Reference impedance too high:
Check reference element and, if neces-
sary replace reference or combination
electrode
For IsFET sensor: leak current > 400 nA.
Replace sensor.
Sensor aged or defective;
Reference aged, defective or diaphragm
blocked;
Buffer solutions too old or contaminated;
PML not in the buffer solutions
Sensor aged or defective;
Reference aged, defective or diaphragm
blocked;
Buffer solutions too old or contaminated;
PML not in the buffer solutions
Difference between channel 1 and 2
measured values too high. Process to
inconsistant or sensor defective. Replace
sensor if necessary.
Check sensor, replace if necessary;
maybe clean, (glass membrane blocked
or run dry; diaphragm blocked).
Wrong buffer used;
Buffer entry incorrect; buffer self-recogni-
tion defective.
PAL missing; sensor too old; sensor some-
times dry; cable or plug defective.
Repeat calibration and renew buffer solu-
tion. Replace electrode if necessary.
Wrong buffer used;
Buffer entry incorrect; buffer self-recogni-
tion defective.
PAL missing; sensor too old; sensor some-
times dry; cable or plug defective.
Dosage time exceeded at total dosage.
Dosage interrupted, dosing agent empty
or process too inconsistant.
8 Troubleshooting
Alarm Error
contact current
Fact User Fact User
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Automatic
cleaning
start
Fact User
no
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