Cause : Short circuit comes when issue in the drive's power circuitry, such as a short circuit in the motor, wiring, or internal components.

The A2B4 fault code indicates a short circuit situation in your ABB ACS560 drive system. This fault can occur in the motor cables, the motor itself, or even within the drive unit.

1. Check motor and motor cable for cabling errors.
2. Check motor and motor cable (including phasing and delta/star connection).
3. Check for an earth fault in motor or motor cables by measuring the insulation resistances of motor and motor cable.
4. Check there are no power factor correction capacitors or surge absorbers in motor cable.