3181 Wiring or earth fault in ABB ACS880 Drive indicates that the drive has detected an imbalance in currents, indicating either a ground leakage (Earth Fault) or that the input and output power cables are incorrectly connected. ACS880 Fault: Wiring or Earth Fault Fault 3181 Description: The drive has detected an imbalance in currents, indicating either a ground leakage (Earth Fault) or that the input and output power cables are incorrectly connected. STOP! Before testing, ensure all power is disconnected. If you are performing an insulation (Megger) test, YOU MUST DISCONNECT the motor cables from the drive. Testing with the cables connected will destroy the drive's IGBTs. Primary Causes Earth/Ground Leak: Insulation breakdown in the motor windings or the motor cable. Incorrect Wiring: Input power lines (L1, L2, L3) are accidentally connected to the motor terminals (U2, V2, W2). High Capacitance: Excessive...