0a7991 Best Better | Siemens Fault

[p1900 = 2] ➔ [Issue ON Command] ➔ [Wait 15s for Current Injection] ➔ [p1900 Auto-Resets to 0] ➔ [Execute RAM-to-ROM Save] Method B: Disabling the Motor Identification Routine

If you cannot perform the motor ID run (e.g., during a Factory Acceptance Test without the final motor connected), set parameter (Inhibited). siemens fault 0a7991 best

The indicates that Motor Data Identification (ID) is activated on your Siemens SINAMICS Drive . This notification is a status alarm rather than a hardware breakdown , meaning the Variable Frequency Drive (VFD) is paused and awaiting a calibration run. It frequently occurs during initial commissioning, after factory resets, or following a firmware update. What is Siemens Alarm A07991? [p1900 = 2] ➔ [Issue ON Command] ➔