: If you can't find the information online, consider contacting Siemens support directly. They can provide specific guidance or tell you if the fault code indicates a need for repair or replacement.
| | Recommended Action | Result | | :--- | :--- | :--- | | New User / Standard Commissioning | Perform the motor identification routine (Start command). Then set P0971 = 1 to save. | Drive is fully optimized, high torque accuracy, alarm clears automatically. | | Expert / Emergency Bypass | Set P1900 = 0 to deactivate the routine. CAUTION: Only use if you are sure the motor data is already correct. | Alarm clears immediately, but motor performance may be sub-optimal. | siemens fault 0a7991 best
Program the master PLC to send over the fieldbus to clear the control block. No PLC connection intended : If you can't find the information online,
Look for "Station Failure" or "Return of Module" messages which might point to a specific faulty slave or module. Best Practices to Prevent Recurrence Then set P0971 = 1 to save
In industrial automation, Siemens Sinamics drives—such as the G120 and S120 series—are renowned for their reliability and advanced performance. However, during commissioning or routine maintenance, operators may encounter alarm codes that halt production. One common alarm is .
If the setup process was never fully finalized or saved from RAM to ROM, the drive will re-trigger the identification routine upon the next power-on sequence.