Increase the acceleration time to give the motor more time to reach speed without hitting the stall threshold. If you are using a SINAMICS G120XA
Disclaimer: This information is based on standard SINAMICS G120/S120 documentation and community feedback within the Siemens SiePortal . siemens drive fault code 7902
During commissioning, if the motor nameplate data (current, power, speed, torque) was entered incorrectly, the drive’s internal mathematical model will miscalculate a stall condition. Increase the acceleration time to give the motor
Before changing parameters, restore the converter to its factory settings to remove any incorrect configurations (using a BOP-2, IOP-2, or Smart Access Module). 2. Enter Quick Commissioning Set the drive to quick commission ( p10 = 1 ). 3. Set Motor Data (Crucial Step) Before changing parameters, restore the converter to its
In the Siemens drive ecosystem, fault code is universally associated with a motor lead or power cable phase failure . Specifically, it indicates that the drive has detected an asymmetry or interruption in the motor’s supply voltage (usually one of the three phases is missing).