Thermistor Fault

What does 29 mean?

The option board's thermistor input has detected an increase in motor temperature, indicating potential overheating. This can also be triggered by a faulty thermistor connection or if the input is left open when not in use.

• The temperature sensor (thermistor) for motor or drive is out of range or disconnected.
• Faulty thermistor or wiring to the temperature sensor.
• Temperature readings indicate an abnormal condition.

Click steps to track your progress.

1. 1

   Inspect the motor's cooling system for obstructions or malfunctions.

2. 2

   Verify the motor's current loading against its nominal specifications.

3. 3

   Examine the thermistor connection to the option board for looseness or damage.

4. 4

   If the thermistor input on the option board is not utilized, ensure it is properly short-circuited.