A00523

Output fault

Siemens · SINAMICS G120 Variable Speed Drive

What does A00523 mean?

This alarm indicates that one phase of the inverter's output is disconnected, suggesting a break in the power path to the motor. This condition can lead to motor malfunction, reduced performance, or potential damage if operated under unbalanced conditions.

Complete Troubleshooting Guide

  1. 1

    Check all connections between the inverter and the motor, especially for loose or broken wiring on each phase.

  2. 2

    Measure the resistance of each motor phase winding to ensure continuity and balance.

Source: Siemens Manual