: Simply wait for the measurement to complete and the alarm will disappear automatically once the drive is switched to "Ready." F07900 (Drive: Motor locked/speed controller at its limit)
Once the measurement is successful, the alarm clears automatically, and the drive transitions to a ready state. siemens fault 0a7991
: If a previous tuning attempt was cancelled or power was lost before completion, the alarm may persist. How to Resolve Alarm A07991 : Simply wait for the measurement to complete
The code (often appearing in logs as part of a longer string like 0a7991) is a Siemens drive alarm indicating that the motor identification has not yet been performed or completed. This typically occurs during the initial commissioning phase of a SINAMICS drive. Recommended Fixes the alarm clears automatically