VFDs: Part 4 - Single-Phase Input VFD

Single-Phase Input VFD


Given that most of us will have only 240 V single-phase in our shops, we need to be certain that the drive we are buying allows single-phase operation. Yes, we have to be careful as some (even small capacity VFDs) are rated only for three-phase input only.






Our ideal VFDs take in 240 Volts and output three-phase to run a motor. The speed and the direction can easily be changed. In this sense a VFD is a digital phase converter, meaning it converts single to three-phase.


Here are a few single-phase 120/240 V VFDs that I could look up in a short time.

KB ELECTRONICS NEMA 4X VFD

These VFDs are packages that are sealed and do not require any additional protection.
MOTOR SIZE Input Voltage VAC Model
1 horsepower (0.75 kW) 115 or 230 single phase Genesis KBAC-24d
1.5 horsepower (1.1 kW)  115  single phase Genesis KBAC-27d
2 horsepower (1.5 kW) 230  single phase Genesis KBAC-27d

INDUSTRIAL AC VFDs (NEMA 1/IP20)

These VFDs are packages that are not sealed and will require protective measures.
MOTOR SIZE Input Voltage VAC Model
1 horsepower (0.75 kW) 115 or 230 single phase TECO L510-101-H1
1 horsepower (0.75 kW) 230 single phase Automation Direct GS1-21P0
1 horsepower (0.75 kW) 230 single phase Huanyang HY0D7523B
2 horsepower (1.5 kW) 230  single phase TECO L510-202-H1
2 horsepower (1.5 kW) 208 three phase Automation Direct GS1-22P0
2 horsepower (1.5 kW) 230  single phase Yaskawa CIMR-JU-BA0006-BAA
2 horsepower (1.5 kW) 230  single phase Huanyang HY01D523B
3 horsepower (2.2 kW) 230 single phase TECO L510-203-H1
3 horsepower (2.2 kW) 230 single phase Yaskawa CIMR-JU-BA0010-BAA
3 horsepower (2.2 kW) 230 single phase Huanyang HY02D223B




Please note there are dozens more great VFDs brands out there. These are some drives that I or my associates have worked with in the past. They are all from reputable manufacturers.

For more on motors for grinder applications see the Grinder Motor Guide.


<< VFDs: Part 3 - Three Phase Induction Motor ---- VFDs: Part 5 - Remote Control >>

 



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