Siemens Fault 0a7991 |best| <Direct | 2025>

Saves parameters from RAM to ROM (perform after clearing alarm). Set to 0

: Ensure the Profinet/Profibus cable is securely plugged in and the PLC is powered on. siemens fault 0a7991

: The alarm typically disappears automatically once the identification routine completes successfully. Saves parameters from RAM to ROM (perform after

: While this alarm is active—especially if a rotating measurement is selected—you may be unable to save parameter assignments to the ROM until the process finishes. Common Troubleshooting Steps : While this alarm is active—especially if a

: If testing the drive standalone, set p2030 = 0 (No protocol) and perform a "RAM to ROM" save. Technical Summary Table Default/Action Description p1900 Set to 0 Disables the motor identification routine. p0971 Set to 1

Set (Motor data identification and rotation test: Disabled).

Ensure the motor is safe to move if a "Rotating Measurement" was selected. Once finished, the alarm will clear itself. 2. Manually Disable the Routine