Motor 1 Temperature Alarm Limit Exceeded

What does 4312 mean?

The measured temperature of motor 1 has exceeded the alarm limit defined by parameter 35.02. This indicates a potential overheating situation specific to this motor, which can lead to insulation degradation and reduced motor lifespan if not addressed.

• Motor 1 operating with a sustained mechanical overload, causing its current draw to exceed the nameplate rating.
• Inadequate cooling for Motor 1 (e.g., blocked air inlets, fan failure, high ambient temperature).
• Incorrect setting of parameter 35.02 (Motor 1 Temperature Alarm Limit) to an excessively low value.
• Faulty or miscalibrated temperature sensor (e.g., PT100, PTC) connected to Motor 1, providing an inaccurate reading.
• Bearing degradation or increased friction within Motor 1, leading to additional heat generation.

Click steps to track your progress.

1. 1

   1. Measure the actual winding temperature of Motor 1 using an external temperature probe and compare it to the alarm limit (P35-02).

2. 2

   2. Monitor Motor 1's operating current (P1-15 if configured for M1) and compare it against its rated current, reducing the mechanical load if necessary.

3. 3

   3. Inspect Motor 1's cooling fan for proper operation and clean any dust or debris from its cooling fins.

4. 4

   4. Verify the integrity and calibration of the temperature sensor connected to Motor 1 by measuring its resistance at known temperatures.

5. 5

   5. Check parameter P35-02 (Motor 1 Temperature Alarm Limit) and adjust it to a value consistent with the motor's insulation class if necessary.