ABB A7C2 fault code meaning

ABB / A7C2

Series: ACS880

Fieldbus adapter B communication

drive

Meaning: Fieldbus adapter B communication loss function. The cyclic communication signal between the AC drive and fieldbus adapter module B, or between PLC and fieldbus adapter module B, has been lost.

Possible causes

Source: ACS880 Basic Control Program Firmware Manual P461

Series: DCS880

FBA B communication enabled. This is to inhibit unnecessary faults

DC drive

Meaning: (The higher-level controller usually starts up more slowly than the converter).

Possible causes

Source: DCS880 Firmware Manual_3ADW000474R P363