Motor Over Temperature
Schneider Electric · Altistart 22 Soft Starter
What does DtF mean?
The motor's embedded PTC (Positive Temperature Coefficient) probes have detected an excessive temperature, indicating that the motor is overheating. This is a critical fault that can lead to rapid motor degradation and failure if not addressed.
Complete Troubleshooting Guide
- 1
Inspect the driven mechanism for any issues such as wear, excessive mechanical play, lubrication problems, or blockages that contribute to motor overload.
- 2
Re-evaluate the sizing of the soft starter and motor in relation to the actual mechanical load requirements.
- 3
Verify the 'PtC' setting in the 'PrO' menu (page 59) is correctly configured for the motor's PTC probes and protection strategy.
- 4
Allow the motor to cool down completely to a safe operating temperature before attempting to restart.