ABB A187 fault code meaning

Series: ACS580MV

Transformer phase U1 bias current exceeds the limit

drive

Meaning: The auxiliary code is the per-unit current value when the alarm is activated * 100. For example, 0xA (10 in decimal) indicates a measured current of 0.10 * 30.41 rated input current * sqrt (2).

Possible causes

Source: ACS580MV Firmware Manual P311