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
Set (Motor data identification and rotation test: Disabled).
The most direct fix is to allow the drive to perform the check. siemens fault 0a7991
: 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
Apply a (start signal) to initiate the routine. Ensure the motor is safe to move if
: Ensure the Profinet/Profibus cable is securely plugged in and the PLC is powered on.
Saves parameters from RAM to ROM (perform after clearing alarm). Set to 0 Manually Disable the Routine Set (Motor data identification
If you are performing a without the final motor, attaching a smaller spare motor can sometimes bypass identification faults by providing enough feedback for the drive to initialize. Alarms A 7991 and A8526 - SiePortal - Siemens
When this code appears, the drive is notifying you that a motor identification routine has been scheduled or is currently running. This routine is essential for the inverter to learn the electrical characteristics of the connected motor (such as resistance and inductance) to ensure precise control.
Removes the requirement for motor details for initial testing.