Siemens Micromaster 440 or MM440 Drive
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Jun 11, 2022 5:29 pm
How can resolve problem A0501 alarm in siemens micromaster 440 or MM440 drive ?
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Jun 11, 2022 5:31 pm
Cause : Current Limit.
- Motor power does not correspond to the inverter power
- Motor leads are too long
- Earth faults
Diagnosis & Remedy
Check the following:
- Motor power (P0307) must correspond to inverter power (r0206).
- Cable length limits must not be exceeded.
- Motor cable and motor must have no short-circuits or earth faults
- Motor parameters must match the motor in use
- Value of stator resistance (P0350) must be correct
- Motor must not be obstructed or overloaded
- Increase the ramp-up-time.
- Reduce the boost.
