ABB 2391 fault code meaning
ABB / 2391
Series: ACS860, ACS880-M04, ACS880-MARINE
BU current difference
drive
Meaning: AC phase current difference between parallel inverter modules is too large.
Possible causes
Source: ACS860 Basic Control Program Firmware Manual P308; ACS880-M04 Machinery Control Program Firmware Manual P430; ACS880 Light Marine P323
Series: ACS880
BU current difference
drive
Meaning: AC phase current difference between parallel inverter modules is too large.
Possible causes
Source: ACS880 Primary Control Program Firmware Manual P468
Series: ACS880-POS, ACS880-WINCH
BU current difference
drive
Meaning: The difference in AC output current between parallel inverter modules is too large.
Possible causes
Source: ACS880 Position Control Program P456; ACS880 Winch Control Program P562