ABB ACS380 Drive
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Dec 14, 2021 9:31 am
How can resolve problem 6681 EFB comm loss Fault in ABB ACS380 Drive ?
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Dec 14, 2021 9:31 am
Cause : Communication break in embedded fieldbus (EFB) communication.
1. Check the status of the fieldbus master (online/offline/error etc.).
2. Check cable connections to the EIA-485/X5 terminals 29, 30 and 31 on the control unit.
