Cause : Fan fault comes when an issue with the cooling fan, which is critical for maintaining the drive's temperature and preventing overheating.

The fault code A581 in your ABB ACS880 drive indicates a Drive Fan Warning. This isn't a critical fault that immediately trips the drive, but it serves as a warning that the drive's internal cooling fan might not be functioning correctly.

1. Cooling fan feedback missing.
2. Check the setting of parameter 95.20 HW options word 1, bit 14.
3. Check the auxiliary code to identify the fan. Code 0 denotes main fan 1. Other codes (format XYZ): “X” specifies state code (1: ID run, 2: normal). “Y” specifies the index of the inverter module connected to BCU (0…n, always 0 for ZCU control units).