ABB A79B fault code meaning
ABB / A79B
Series: ACM510-S, ACP510
Braking chopper
drive
Meaning: IGBT short circuit.
Possible causes
Source: ACM510-01S_04S Drive Firmware Manual P358; ACP510 Standard Control Program Firmware Manual P358
Series: ACS860
Braking chopper short circuit
drive
Meaning: Braking chopper IGBT short circuit.
Possible causes
Source: ACS860 Basic Control Program Firmware Manual P302
Series: ACS880-M04, ACS880
BC short circuit
drive
Meaning: Braking chopper IGBT short circuit.
Possible causes
Source: ACS880-M04 Machinery Control Program Firmware Manual P421; ACS880 Basic Control Program Firmware Manual P459
Series: ACS880-POS, ACS880-WINCH
BC short circuit
drive
Meaning: Braking chopper IGBT short circuit.
Possible causes
Source: ACS880 Position Control Program P447; ACS880 Winch Control Program P554