Motor Temperature Sensor (TF) Trip

What does 31 mean?

This fault occurs when the temperature sensor (TF) in either drive 1 or drive 2 is triggered, indicating an overtemperature condition in the respective motor. Common causes include excessive motor load, high ambient temperatures, inadequate motor cooling, or a faulty sensor itself providing an incorrect reading. Operating a motor above its rated temperature severely shortens its lifespan, degrades winding insulation, and risks permanent motor damage, necessitating immediate attention.

Complete Troubleshooting Guide

1. 1

   Check the wiring and connection of the temperature sensor (TF) for the affected motor to ensure it is secure, intact, and not providing a false reading.

2. 2

   Reduce the mechanical load on the motor to decrease heat generation and allow the motor to operate within its thermal limits.

3. 3

   Improve ventilation around the motor and ensure the ambient temperature in its operating environment is within specified parameters.

4. 4

   Allow the motor to cool down completely to its normal operating temperature before attempting to reset the error, to prevent immediate re-tripping.