AC10: Why Is My AC Motor Running Hot

Owned by Corey Boyles
Last updated: Aug 05, 2024 by Eric Rojas
1 min read

  1. MOTOR CONNECTIONS:

    1. Make sure the motor is rated for inverter-duty.

      1. Motor drives are not transformers. The voltage you apply to the input mains is often the max PWM voltage on the motor. The PWM signal is modulated such that you get a nominal rating to provide motor control.This is a principle of PWM control. If your AC mains is 460Vac, and your motor is rated for 230Vac, and not inverter-duty rated  there is a strong chance the motor will not live its full life.

    2. Make sure the stator is properly connected for the voltage provided by the inverter.

    3. Make sure there are no loose motor connections.

  2. INVERTER SETTINGS:

    1. For SV Mode, make certain the magnetizing current is not set too high.

    2. For V/Hz mode, make sure the boost is not set too high.

  3. RUNNING CONDITIONS:

    1. Is there a Blower on this motor?

      1. Are the blower filters clogged?

      2. Is there free airflow through the motor?

      3. What is the ambient temperature?

    2. Does the motor run below 25% speed for extended periods of time (without forced air cooling)?

    3. Is the motor running with the motor torque >75% for extended periods of time (without forced air cooling)?

[QuickLink for the AC10 on Parker.com] - Manual, QuickStarts, Product Support, etc

28NOV2016 LS

11SEP19 JD