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International Inc. 561-8 Plate Drive, East Dundee, Illinois 60118-2467 USA

Drive Selection Help

How do I select the right PE

VFD or Multi-Vector

drive for my application?

Drive selection is mainly dependent on the answers to the following questions:

1. Will the drive be used to control a travel motion (bridge, trolleys, rotation, etc.) or to control a hoist? Many of

our drives are now “pre-programmed” to control either a traverse motion or hoist motors. Our drives that are

programmed to control hoist motors will usually have a model number ending in “H”.

2. If the drive will be used to control a hoist motor, does the hoist have a mechanical load brake, or is a closed-loop

system (with an encoder) required?

3. What are your motor specifications (HP or kW rating, FLA, RPM, Voltage)?

4. How many speed control settings would you like?

5. Do you require analog speed control?

6. How many other user Auxiliary inputs or controls are required?

Once you have this information, compare your specifications to our list of products. Contact PE

if you require any

further help with selecting the correct drive for your application.

Should I select a drive that is over-sized for my motor rating?

No. Unlike many of our competitors, PE

drives are built so that over-sizing is not necessary. Our drives are built from the

ground-up with the demanding requirements of electric overhead cranes and material handling in mind. As long as you

select a drive that meets (or slightly exceeds) your motor HP and FLA requirements, our drives are built to handle the

size motors specified.

Will PE

drives work with single-phase motors?

No, our Soft-Starts and VFDs are designed to work with three-phase motors. However, if your facility does not have

three-phase power available, PE

VFD drives can be used to convert single-phase line voltage to three-phase output for

use with a three-phase motor. In this case, call PE

for special drive sizing concerns.

Can I use PE

drives with two-speed motors?

Yes. If you have a two-speed motor and you are using one of our Micro-Speed

VFDs for speed control, hook up the PE

drive to the motor’s high-speed windings only. Be sure to size the VFD based on the high-speed winding HP/Amp rating.

If you plan on using a Smooth-Move

Soft-Start unit, be sure to select the model that works with two speed motors.

Power Electronics VFD User Manual

Questions and Answers: