A0501 Current limit alarm in siemens micromaster 420 or MM420 drive

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 How can resolve problem A0501 Current limit alarm in siemens micromaster 420 or MM420 drive ?

Cause : Current limit.

- the motor power rating does not correspond to the inverter power rating
- motor cables are too long
- ground fault

Diagnosis & Remedy

Please check the following:
- does the motor power rating (P0307) match the inverter power rating (r0206) ?
- are the limit values for the cable lengths maintained ?

Click here for more information

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