F0020 fault in siemens micromaster 440 or MM440 drive

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 How can resolve problem F0020 fault in siemens micromaster 440 or MM440 drive ?

Cause : Mains Phase Missing. Fault occurs if one of the three input phases are missed and the pulses are enabled and drive is loaded.

Diagnosis & Remedy - check the input wiring of the mains phases.

Click here for more information


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