Diagnostics and troubleshooting Cerabar PMC11, PMC21, PMP11, PMP21, PMP23
26 Endress+Hauser
8 Diagnostics and troubleshooting
8.1 Troubleshooting
If an illegal configuration exists in the device, the device switches to error mode.
General errors
Error Possible cause Solution
Device is not responding. Supply voltage does not match that specified on
the nameplate.
Apply correct voltage.
Supply voltage has incorrect polarity. Reverse polarity of supply voltage.
Connecting cables are not in contact with the
terminals.
Check the contacting of the cables
and correct if necessary.
Output current
≤ 3.6 mA
Signal line is not wired correctly. Check wiring.
8.2 Response of output to errors
The response of the output to error is regulated in accordance with NAMUR NE43.
Factory setting MAX alarm: >21 mA
8.2.1 alarm current
Device Description Option
PMC21
PMP21
PMP23
Adjusted min. alarm current IA
1)
1) Product Configurator order code for "Service"
8.3 Disposal
When disposing, separate and recycle the device components based on the materials.
9 Maintenance
No special maintenance work is required.
Keep the pressure compensation element (1) free from contamination.
A0022141
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