Motor overload temperature

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According to the electronic thermal protection (ETR), the motor is too hot. This fault occurs when the motor runs with more than 100% overload for an extended period. Unresolved motor overheating risks severe motor damage or premature failure.

• Motor operating continuously above 100% of its rated current, leading to excessive winding temperature.
• Incorrect motor data (P1-20 to P1-25) programmed in the frequency converter, causing inaccurate thermal model calculations.
• Insufficient motor cooling due to blocked ventilation fins, a faulty cooling fan, or high ambient operating temperature.
• Mechanical overload on the motor shaft due to process issues, worn bearings, or misaligned coupling.

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

1. 1

   Measure the motor winding temperature directly using an infrared thermometer or an embedded RTD/thermistor if available.

2. 2

   Verify motor nameplate data (Voltage, Current, Frequency, RPM, Power Factor) is accurately entered into parameters P1-20 through P1-25.

3. 3

   Clear any obstructions from the motor's cooling fan and ventilation fins, and ensure adequate airflow in the motor's operating environment.

4. 4

   Measure the output current to the motor with a clamp meter during operation and compare it to the motor's rated current (P1-02).