PT100 Motor Temperature Fault

What does PT100 mean?

This fault indicates that the PT100 temperature sensor connected to the motor has detected an over-temperature condition or a sensor malfunction (e.g., open circuit, short circuit). This is a critical protective measure for the motor, signaling that its temperature has exceeded safe limits. Prolonged overheating can lead to irreversible damage to motor windings and insulation, resulting in motor failure.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Inspect the motor's cooling fan and fins for obstructions or malfunction, ensuring effective heat dissipation.

2. 4

   Check for mechanical overload on the motor or driven equipment that contributes to excessive heating.

3. 5

   Ensure PT100 parameters in the VSD (e.g., sensor type, trip thresholds) are correctly configured.