ABB ACS180 Drive
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Jul 13, 2023 1:09 pm
Cause : EFB comm loss comes when communication break in embedded fieldbus (EFB) communication due to faulty connection.
- Check the status of the fieldbus master (online/offline/error etc.).
- Check cable connections to the EIA-485 terminals 25, 26, 27 and 28 on the control unit.
