ABB B6BB fault code meaning
ABB / B6BB
Series: ACS580MV
Power module during synchronization
drive
Meaning: HB1 or HB2 short-circuit shutdown. Desaturation detection for IGBT in power module HB1 (half-bridge 1) or HB2 (half-bridge 2) has detected a short circuit.
Possible causes
Source: ACS580MV Firmware Manual P322