Selecting the proper motor drive is a process that begins at the load.
Consult the table below to determine the category of your application,
and the type of motor drive best suited.
||Typical Starting Torque*
Direct-drive fans and blowers with
PSC (permanent-split capacitor)
and shaded pole motors on
*Typical starting torque as percentage of full load torque.
Anacon drives are not compatible with switched-cap (cap-start or cap-start/cap-run), or "split-phase" AC induction motors. (Why?) Anacon drives are also not intended for brushless DC or switched-reluctance motors.
Avoiding Wrong Choices
The use of a single phase PSC or shaded pole motor for high starting torque applications should be avoided. (Why?) This rule applies in general whether using a motor drive or not. The motor drive should not be viewed as a means of compensating for the inherent limitations of low-torque motors.
Examples of motor drive applications to avoid with single phase shaded pole or PSC motors include belt/pulley loads, compressors and pumps with high head pressures and heavily loaded conveyors. Expect to over-rate a single phase drive to meet high starting currents if a single phase drive must be used for a high-torque application.