Verify . Ensure it is set high enough to allow for the breakaway torque required during startup (typically 1.3 to 2 times the rated motor current, depending on the application). Check the torque limit parameters ( p1520 and p1521 ). Step 3: Adjust Stall Detection Thresholds
The most straightforward reason is a heavy mechanical load that exceeds the torque capacity of the motor or drive combination. If a mechanical brake does not release properly, or if downstream equipment (such as conveyors, pumps, or mixers) is jammed, the motor will lag behind its frequency command. 2. Missing or Incomplete Motor Commissioning siemens drive fault code 7902
Here is the breakdown and common solutions for this fault. Verify
) connection, but the drive parameterization is configured for a connection, or vice versa. Step 3: Adjust Stall Detection Thresholds The most
Disconnect drive terminals and measure resistance at room temperature. Should be ~600Ω. Use a hairdryer to warm probe—resistance should increase smoothly.