Drive Fault Code 7902 — Siemens

The specifically indicates a "Drive: Motor Stalled" condition. It triggers when the drive detects that the motor shaft has stopped spinning or cannot keep up with the commanded speed while operating above its baseline speed threshold.

Fault indicates that the drive has detected a motor stall . This occurs when the actual speed of the motor deviates from the speed setpoint by more than a specified threshold for a set period.

This is the most direct cause. The motor is physically unable to turn. siemens drive fault code 7902

Re-run the motor identification at standstill ( p1900 = 2 ) to ensure the drive has accurate data from the motor's nameplate (p304–p311).

The drive stops operating (OFF2 or OFF3 depending on configuration) to protect the motor and mechanics. 2. Common Causes This occurs when the actual speed of the

This recalibrates the drive's internal mathematical model of the motor. Prevention and Best Practices

): Give high-inertia loads more time to accelerate without oversaturating the current loop. Verify Current Limit ( p0640p 0640 Re-run the motor identification at standstill ( p1900

Diagnosis requires looking at the hardware, the application, and the software parameters: