Cause : Motor overtemperature comes when the temperature of the motor has exceeded the acceptable limit due to motor is overloaded or motor ambient temperature too high.

Here's a step-by-step guide to help you resolve a motor overtemperature fault:

1. Check Ambient Conditions: Ensure that the ambient temperature around the motor is within the specified operating range. High ambient temperatures can contribute to motor overheating.

2. Inspect Ventilation: Verify that the motor is adequately ventilated to dissipate heat effectively. Ensure that vents are not obstructed and that there is sufficient airflow around the motor.

3. Reduce Load: If the motor is operating at maximum capacity for extended periods, consider reducing the load to decrease heat generation. Overloading the motor can lead to overheating and premature failure.

4. Review Motor Parameters: Check that the parameters of the motor configured in the V20 drive are correct. Incorrect motor parameters can lead to inefficient operation and increased heat generation. Ensure that the rated current, voltage, and thermal characteristics of the motor are properly set in the drive's settings.

5. Inspect Drive Settings: Review the control settings of the V20 drive and adjust them as needed to optimize performance and minimize heat buildup. Pay attention to parameters related to acceleration, deceleration, and current limits.

6. Monitor Motor Temperature: Utilize the temperature monitoring features of the V20 drive, if available, to track the temperature of the motor in real-time. Set up alarms or warnings to alert operators when the temperature approaches or exceeds the specified limit.

7. Consider Motor Cooling Methods: In applications where overheating is a concern, consider implementing additional cooling methods such as external fans or motor cooling jackets. These can help dissipate excess heat and maintain the motor temperature within safe limits.

8. Inspect Motor Windings: Check the condition of the motor windings for any signs of damage or insulation breakdown. Faulty windings can lead to increased resistance and heat generation within the motor.

9. Also check the following:

• Load or load step too high?
• Motor nominal overtemperatures (P0626 - P0628) must be correct.
• Motor temperature warning level (P0604) must match.
• Motor current is not in excess of the motor nominal current as indicated by the motor rating plate.
• Physical temperature of the motor lies within limits

If these two conditions are satisfied, then set parameter P0335 = 1.