ABB D20B fault code meaning
ABB / D20B
Series: ACS380
Power-on acknowledgment
drive
Meaning: The power-on acknowledgement circuit is open.
Possible causes
Source: ACS380 Machinery Control Program Firmware Manual P436
Series: ACS880-WINCH
Start sequence error
drive
Meaning: The drive does not accept the start command because the start signal was active when the drive was powered on.
Possible causes
Source: ACS880 Winch Control Program P561