ABB A79C fault code meaning
ABB / A79C
Series: ACH531, ACQ531
Braking chopper IGBT overtemperature
drive
Meaning: The temperature of braking chopper IGBT exceeds the internal warning limit.
Possible causes
Source: ACH531 Firmware Manual P130; ACQ531 Firmware Manual P111
Series: ACH580, ACM510-S, ACM510-V, ACP510, ACS180, ACS380, ACS580, ACS880-M04
BC IGBT overtemperature
drive
Meaning: The braking chopper IGBT temperature has exceeded the internal warning limit.
Possible causes
Source: ACH580 HVAC Control Program Firmware Manual P280; ACM510-01S_04S Drive Firmware Manual P359; ACM510-01V_04V Drive Firmware Manual P401; ACP510 Standard Control Program Firmware Manual P359; ACS180 Machinery Control Program Firmware Manual P317; ACS380 Machinery Control Program Firmware Manual P431; ACS580 Standard Control Program Firmware Manual P528; ACS880-M04 Machinery Control Program Firmware Manual P421
Series: ACQ580, ACS880
Braking chopper IGBT overtemperature
drive
Meaning: The temperature of braking chopper IGBT exceeds the internal warning limit. Cool the chopper.
Possible causes
Source: ACQ580 Pump Control Program Firmware Manual P186; ACS880 Basic Control Program Firmware Manual P459
Series: ACS280
BC IGBT overtemperature
drive
Meaning: IGBT Braking chopper temperature exceeds the internal warning limit.
Possible causes
Source: ACS280 Firmware Manual P335
Series: ACS530
BC IGBT overtemperature
drive
Meaning: The temperature of braking chopper IGBT has exceeded the internal alarm limit.
Possible causes
Source: ACS530 Firmware Manual P264
Series: ACS860
Braking chopper IGBT overtemperature
drive
Meaning: Braking chopper IGBT: Temperature exceeds the internal warning limit. Allow the chopper to cool down.
Possible causes
Source: ACS860 Basic Control Program Firmware Manual P302
Series: ACS880-POS, ACS880-WINCH
BC IGBT overtemperature
drive
Meaning: The temperature of braking chopper IGBT has exceeded the internal warning limit.
Possible causes
Source: ACS880 Position Control Program P447; ACS880 Winch Control Program P554