ABB ACS380 Drive
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Dec 14, 2021 10:04 am
How can resolve problem 71A3 Mechanical brake opening failed Fault in ABB ACS380 ?
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Dec 14, 2021 10:04 am
Cause : Mechanical brake control fault. Activated eg. if brake acknowledgement is not as expected during brake opening.
1. Check mechanical brake connection.
2. Check mechanical brake settings in parameter
group 44 Mechanical brake control.
3. Check that acknowledgement signal matches actual status of brake
