Hello, I’m trying to figure out how to power a DC motor, it came out a Laguna wood lathe. It was controlled by pulse width modulation. The label says output is 1.5hp, voltage 166DC, 8amps, rpm 2150. Looking for some advice.

Thanks,
Brad

 

You might want to look at a Treadmill MC1200 board.
They come unidirectional, however.
A reverse could be added if needed

 

You might want to look at a Treadmill MC1200 board.
They come unidirectional, however.
A reverse could be added if needed

My goal is to mount it on my bandsaw so I can cut metal at a slower speed. What does the 166VDC mean, is that the amount of DC voltage I need to run it?
Thanks

 

https://www.amazon.co.uk/CCM220DCS-Controller-DC10-210V-Enclosure-Regulating/dp/B0BX92HFR9 will do the job. 166vdc is the nominal voltage for max rpm. 166v x 8A = 1328W which is approx 1.8hp in, 1.5hp out. You will need to put the controller in a ventilated non-conducting , eg wood or plastic, finger-proof enclosure, including the control knob as that is at AC line voltage and a shock hazard. Wire to 220v/230v AC supply via emergency cutout switch and a RCD (UK) or GFCI (US).

Sadly there aren't too many low-cost options for a 1.5hp DC motor, most are for 0.75 to 1hp as on most mini-lathes. There are 230v AC/180v DC PWM options as replacement controllers for bigger lathes but you are looking at 190GBP/250USD or up.

 

@TheNoof You can use the MC2100 for that motor, It also needs a simple PWM LV controller, the nice thing is the control portion is isolated from the mains power.
The manual controller can be had cheap, I made a few simple ones up with a stop/start PB.

 

@TheNoof You can use the MC2100 for that motor, It also needs a simple PWM LV controller, the nice thing is the control portion is isolated from the mains power.
The manual controller can be had cheap, I made a few simple ones up with a stop/start PB.

@MaxHeadRoom Hi Max, my concern with that is that the MC2100 only comes, it seems, in two variants, the -18 and -50 for 180W and 500W respectively, whereas the TS' motor is 1300W.

 

Is it possible to run a DC motor with a variable DC power supply?

 

Is it possible to run a DC motor with a variable DC power supply?

What do you mean by 'variable'?
The one I quoted is variable, via PWM.?

 

@MaxHeadRoom Hi Max, my concern with that is that the MC2100 only comes, it seems, in two variants, the -18 and -50 for 180W and 500W respectively, whereas the TS' motor is 1300W.

The popular Johnson motors that come with these start at 2.0HP and 19amp rated motors !
They then go up to 3.5HP.

 

What do you mean by 'variable'?
The one I quoted is variable, via PWM.?

I have and old BK PRECISION 1735 DC Power Supply 30V/3A

 

I have and old BK PRECISION 1735 DC Power Supply 30V/3A

Limited RPM using that!

 

@TheNoof You can use the MC2100 for that motor, It also needs a simple PWM LV controller, the nice thing is the control portion is isolated from the mains power.
The manual controller can be had cheap, I made a few simple ones up with a stop/start PB.

Is the simple PWM LV controller the same as the manual controller. Would you recommend one. Thanks!

 

The unit you quoted appears to be a power supply only? It would run at one speed on this.
It is either build a custom one or try one of the MC1200s I mentioned.

 

Is it possible to run a DC motor with a variable DC power supply?

Certainly it is possible, I have done it. It is also possible to speed control a DC motor with a "triac dimmer"feeding a bridge rectifier. Simple and cheap. Not the full range of speeds, but it can be done. Packaging that sort of setup can be the challenge.

 

\If you want to go the SCR route there is the MC60 version of TM controllers, not as smooth at low RPM as the PWM, however. !

 

The kind of speed control you select will also depend on the application you intend to use the motor for.
Driving a bandsaw will only need "fast" and "slow", while other applications may require some much more precise control. An auto-transformer with taps, feeding a bridge rectifier, could provide several different speeds, which might be adequate for some applications.

 

Hello, I’m trying to figure out how to power a DC motor, it came out a Laguna wood lathe. It was controlled by pulse width modulation. The label says output is 1.5hp, voltage 166DC, 8amps, rpm 2150. Looking for some advice.

Thanks,
Brad

You can check Alltrax DC motor controllers. https://alltraxinc.com/documentation/

 

The motor came out of a wood lathe?? So what are you going to put it in next?? The kind of speed control depends on what the motor application is going to be. An air compressor needs different control than a belt sander or an end mill or a table saw.

 

That motor is meant to run from a DC drive/controller, not straight from AC power. You will need a PWM DC motor controller that can supply around 160–170 VDC at 8–10 A, usually fed from 120/240 VAC and with proper speed control. Reusing the original Laguna controller (or a similar rated DC drive) is the safest and simplest option.

Or the other options previously quoted. !

 

Going back to post #1, CERTAINLY it is possible to drive a DC motor with a DC power supply. BUT it may not provide satisfactory operation, and it may not be at all efficient. "DC Power Supply" covers a very broad spectrum of circuits and control schemes.

So the very first question, which must be answered, is "what is the application?? Powering an air compressor is much different than powering a vent fan or a band-saw.