Cause : Safe motor temperature 3 comes when the thermistor protection module installed in slot 3 indicates overtemperature.

The fault code 4993 in your ABB ACS880 drive indicates a motor speed sensor fault. This means the drive isn't receiving a valid signal from the motor speed sensor, or the detected speed signal is outside the expected range.

1. Check the cooling of the motor.
2. Check the motor load and drive ratings.
3. Check the wiring of the temperature sensor. Repair wiring if faulty.
4. Measure the resistance of the sensor. Replace sensor if faulty.