Fault 20 Device monitoring

Subfault: 20.1

Description: Supply voltage fault

 

Response: Emergency stop + output stage inhibit

System state: Fault acknowledgment with CPU reset

Cause

Measure

24 V power supply unit overloaded.

Check the project planning for the power demand.

The internal electronics supply voltage or externally connected DC 24 V standby supply voltage is outside the permitted voltage range.

Check the voltage level of the external DC 24 V standby supply voltage and check for correct connection. If required, correct.

– Acknowledge the fault.

– If the fault occurs repeatedly, replace the device. For further support, contact SEW‑EURODRIVE Service.

Subfault: 20.8

Description: Fan warning

 

Response: Warning with self-reset

Cause

Measure

Fan function impaired.

Check the fan for proper functioning.

Subfault: 20.9

Description: Fan fault

 

Response: Emergency stop + output stage inhibit

Cause

Measure

Fan defective.

Contact SEW‑EURODRIVE Service.