ABB A4B1 fault code meaning
ABB / A4B1
Series: ACH531, ACQ531, ACQ580, ACS880-POS, ACS880-WINCH
Temperature difference too large
drive
Meaning: The temperature difference between IGBT in different phases is too large.
Possible causes
Source: ACH531 Firmware Manual P126; ACQ531 Firmware Manual P108; ACQ580 Pump Control Program Firmware Manual P182; ACS880 Position Control Program P442; ACS880 Winch Control Program P548
Series: ACH580
Temperature difference too large
drive
Meaning: ?? Temperature difference between IGBT in the same phase is too large.
Possible causes
Source: ACH580 HVAC Control Program Firmware Manual P279
Series: ACM510-S, ACM510-V, ACP510, ACS280, ACS580
Temperature difference too large
drive
Meaning: The temperature difference between IGBT in different phases is too large.
Possible causes
Source: ACM510-01S_04S Drive Firmware Manual P355; ACM510-01V_04V Drive Firmware Manual P399; ACP510 Standard Control Program Firmware Manual P355; ACS280 Firmware Manual P332; ACS580 Standard Control Program Firmware Manual P524
Series: ACS380
Temperature difference too large
drive
Meaning: The temperature difference between IGBT in different phases is too large.
Possible causes
Source: ACS380 Machinery Control Program Firmware Manual P428
Series: ACS530, ACS880
Temperature difference too large
drive
Meaning: The temperature difference between IGBT in different phases is too large.
Possible causes
Source: ACS530 Firmware Manual P260; ACS880 Basic Control Program Firmware Manual P454
Series: ACS860
Temperature difference too large
drive
Meaning: The temperature difference between IGBT in different phases is too large.
Possible causes
Source: ACS860 Primary Control Program Firmware Manual P299
Series: ACS880-MARINE
Temperature difference too large
drive
Meaning: Temperature difference between different phase sequences IGBT is too high.
Possible causes
Source: ACS880 Light Marine P315