Variable Speed Electric Motor / Voltage Regulator

[Rockwood]

Prob about 50% or more...it's scary how fast it is now. We havent even put the horses on it yet....maybe the VFD is the better route? I only have 120v tho.

Something like this?

View attachment 152108

Based on the partial wiring schematic pictured, I think that's going to do the same thing as the controller you already bought. It appears there's a 3ph hookup schematic off the picture to the right. If so, a single phase AC to 3ph VFD controller would work perfectly.

*** EDIT *** NM. That's a capacitor start motor (assumption since it says capacitor motor on it), VFD won't work either.

You're either going to need to replace the motor with a VFD compatible motor, or pulley it down.

 

[wesinls]

Any reason why this wouldnt work?

Whoops, we couldn't find that.

 

[Rockwood]

Any reason why this wouldnt work?

Whoops, we couldn't find that.

A capacitor start motor is designed to use the capacitor to fill the inrush current until the motor achieves full speed. Running it with a VFD will cause that capacitor to overheat.

 

[rivermobster]

Late to the party, but ...

This is the sorta thing I use ChatGPT for. Give it as much info as you can, it it will probably come up with a solution.

For electrical stuff...

I like this place: https://www.digikey.com/

 

[Rockwood]

Can you show the schematic for (assumption since I see amps drop, 20X voltage, and the single phase hookup shows waaaay too many inputs and lines for a single phase only motor) 3ph hookup? It's possible the capacitor is used in single phase only to help with startup current. 3ph usually doesn't need a cap to start...

 

[wesinls]

Can you show the schematic for (assumption since I see amps drop, 20X voltage, and the single phase hookup shows waaaay too many inputs and lines for a single phase only motor) 3ph hookup? It's possible the capacitor is used in single phase only to help with startup current. 3ph usually doesn't need a cap to start...

This is the manual for the VFD:

https://www.grainger.ca/ec/pdf/Dayton-Hybrid-AC-Drive-Rugged-Aluminum-NEMA-1-IP-50-Manual.pdf

 

[Rockwood]

This is the manual for the VFD:

https://www.grainger.ca/ec/pdf/Dayton-Hybrid-AC-Drive-Rugged-Aluminum-NEMA-1-IP-50-Manual.pdf

For the motor, not the VFD

 

[wesinls]

For the motor, not the VFD

Not sure if this is correct or what you're looking for - but similar part number (mine and this one start with 5K565)



And on my actual unit is has:

 

[MWB]

Based on the partial wiring schematic pictured, I think that's going to do the same thing as the controller you already bought. It appears there's a 3ph hookup schematic off the picture to the right. If so, a single phase AC to 3ph VFD controller would work perfectly.

*** EDIT *** NM. That's a capacitor start motor (assumption since it says capacitor motor on it), VFD won't work either.

You're either going to need to replace the motor with a VFD compatible motor, or pulley it down.

The motor he has is only single phase not 3Ph. It has two configurations, Single phase 120-volt or single phase 208-230 volts (208 volts is present when you have a three-phase service and 230 is single phase)

Decreasing voltage (10- 20%) in an electric motor like that will work, decreasing it much further will decrease the life of the motor

 

[Rockwood]

The motor he has is only single phase not 3Ph. It has two configurations, Single phase 120-volt or single phase 208-230 volts (208 volts is present when you have a three-phase service and 230 is single phase)

Decreasing voltage (10- 20%) in an electric motor like that will work, decreasing it much further will decrease the life of the motor

Yeah, you’re right. Got wrapped around what looked like a Y hookup and 208v and went with it…