DO NOT use the following models on a VFD:
  • Single phase motors.
  • Motors with built-in automatic reset or manual reset overload devices.
  • UL Listed Fire Pump motors.
  • Motors labeled for 1.0 Service factor on line power.
  • Multi-speed motors.
  • Explosion Proof motors that do not have the VFD speed range (such as 10:1, 20:1, 2:1) and torque profile (VT or CT) stamped on the nameplate.
  • Division 2 motors not labeled for VFD use.