Siemens Micromaster 420 or MM420 Drive
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Jun 09, 2022 5:12 am
F0072 fault in siemens micromaster 420 or MM420 drive - comes when no setpoints received via the USS during the telegram off time.
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Jun 09, 2022 5:13 am
Cause : - no setpoints received via the USS during the telegram off time
Diagnosis & Remedy
- Check USS master.
- Check connections to the communications board
