Siemens Drive Fault Code 7902 ^hot^ Jun 2026

If you see , your drive has been "orphaned." It thinks the controller (PLC) has abandoned it. 95% of the time, this is a broken cable, a loose connector, or the PLC being stopped.

Measure the resistance of the motor windings using a multimeter to ensure balance across all three phases. siemens drive fault code 7902

Check parameters to adjust the stall detection sensitivity. If using an encoder, check for "inverted" encoder signals. Specific Notes for G120XA Converters If you see , your drive has been "orphaned

Cross-reference the following parameters directly with the physical motor nameplate: Rated motor voltage p0305: Rated motor current p0307: Rated motor power p0311: Rated motor speed If you see