Siemens Micromaster 440 or MM440 Drive
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Jun 12, 2022 9:59 am
How can resolve problem A0520 alarm in siemens micromaster 440 or MM440 drive ?
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Jun 12, 2022 10:01 am
Cause : Rectifier OverTemperature - Warning level of rectifier heat-sink temperature (P) is exceeded.
Diagnosis & Remedy
Check the following:
- Ambient temperature must lie within specified limits
- Load conditions and duty cycle must be appropriate
- Fan must turn when drive is running
