ABB F524 fault code meaning
ABB / F524
Series: DCS550
MainContAck
DC drive
Meaning: Main contactor acknowledge missing
Possible causes
Source: DCS550 Manual (EN, official site)
Series: DCS880
contactor main contactor acknowledgement loss
DC drive
Meaning: contactor Main contactor acknowledgement loss.
Possible causes
Source: DCS880 Firmware Manual_3ADW000474R P397