The Siemens alarm indicates that Motor Data Identification (ID) is currently active or scheduled to run at the next power-on command. This is a standard part of the commissioning process for Siemens SINAMICS drives (such as the G120 or G130) where the inverter measures the connected motor's characteristics to optimize control performance. Core Cause
A: No – the fault prevents damage. It trips before excessive current melts windings. However, repeated fault cycles can stress the insulation. siemens fault 0a7991
: Ensure all motor parameters (rated voltage, current, power, speed, etc.) have been correctly entered in the commissioning software. Perform Motor Identification : A07991 The Siemens alarm indicates that Motor Data
Once the root cause is identified, here is how to eliminate 0A7991 permanently. A: No – the fault prevents damage