F01649

Internal software error

Siemens · SINAMICS G120 Safety Functions

What does F01649 mean?

An unexpected internal software error has occurred within the Control Unit, which can lead to unstable operation or system failure. If not resolved, it may indicate a hardware defect, compromising the drive's reliability.

Complete Troubleshooting Guide

  1. 1

    Cycle the power supply of the Control Unit (off then on).

  2. 2

    If the fault persists and cannot be acknowledged, replace the Control Unit.

Source: Siemens Manual