Help selecting power supply for 2x72 grinder

[shepherd]

Hi there,

I've googled trying to find an answer, but am finding its like asking the time and getting told how to build a watch, so I am abandoning all sense of self-esteem and throwing myself on the mercy (and free time) of the collective wisdom here...

Can some please link to an in expensive power supply with speed control, that I can simply connect a 2.5 HP dc treadmill motor to and plug into the wall? I have the original controller and led board from the treadmill, but I'm looking for smaller, simple, and easy...grinder project has been languishing close to a year...

The motor reads:
2.80 HP @ 130 VDC/ 2088 watts
1.75 HP Cont. Duty @ 100V 1805W watts

Again, not looking for best, or cheapest, but most REASONABLY priced, regardless of source of origin, shipped to Canada.....if anyone could help, my son, who has been bit by the knife making bug, would appreciate it!

 

[ishiboo]

 

[shepherd]

Thank you, but as I said, I am not looking for DIY instruction, but some direction on choosing the appropriate item....for example, would THIS one work?

https://www.aliexpress.com/item/10-...4a-4e36-8a8d-0b43dc232274&transAbTest=ae803_1

It's not that I'm lazy (most of the time), just a matter of bandwidth for various activities, and brushing up on my electric 101 theory is a outside the current scope...

 

[dogdog]

Thank you, but as I said, I am not looking for DIY instruction, but some direction on choosing the appropriate item....for example, would THIS one work?

https://www.aliexpress.com/item/10-...4a-4e36-8a8d-0b43dc232274&transAbTest=ae803_1

It's not that I'm lazy (most of the time), just a matter of bandwidth for various activities, and brushing up on my electric 101 theory is a outside the current scope...

Is that a PWM motor controller or power supply ?

I put my treadmill motor on a 24V DC power supply and it runs but weak.... not sure if 50V will be any better for a 130V rated DC motor... BTW that is a DC PWM controller not a power supply. Unless my eyes are wonky today. Ebay is cheaper they have version on the upper of 80V but nothing for 130V and it is not a power supply.

 

[kd3pc]

Thank you, but as I said, I am not looking for DIY instruction, but some direction on choosing the appropriate item....for example, would THIS one work?

https://www.aliexpress.com/item/10-...4a-4e36-8a8d-0b43dc232274&transAbTest=ae803_1

It's not that I'm lazy (most of the time), just a matter of bandwidth for various activities, and brushing up on my electric 101 theory is a outside the current scope...

you are on the right path...the one you selected with it's 10-to-50vDC envelope will only give you 50% of the previous speed. The motor needs 130vDC for full hp, and 100vDC for continuous use speed.

IF the slower speed/lower hp will serve your needs, then this will work.

 

[mm08822]

call automation direct. Tell them your application and motor details. They can suggest a drive for you.

 

[shepherd]

you are on the right path...the one you selected with it's 10-to-50vDC envelope will only give you 50% of the previous speed. The motor needs 130vDC for full hp, and 100vDC for continuous use speed.

IF the slower speed/lower hp will serve your needs, then this will work.

Thank you, that is the feedback I was hoping for....with vendors from various sites and countries, matching the numbers/specs from one device to another has had me baffled.

 

[shepherd]

you are on the right path...the one you selected with it's 10-to-50vDC envelope will only give you 50% of the previous speed. The motor needs 130vDC for full hp, and 100vDC for continuous use speed.

IF the slower speed/lower hp will serve your needs, then this will work.

Looking for the higher 100vDC unit, it seems that the required input voltage is 220V...if the treadmill ran on 110, surely there should be a similar unit that can use a standard outlet? Or am I indeed looking at adding yet another 220v outlet in my garage?

 

[dogdog]

take a look at this thread.... you can view what that op uses for his treadmill controller.... the ones you list IS NOT A power supply just a PWM DC motor speed controller, if you buy that I think you'll still have to come up with your own power source.... .

https://www.garagejournal.com/forum/showthread.php?t=289922

 

[American Locomotive]

You don't need a power supply, you need a DC Motor Controller with an AC input. Something like this: https://www.amazon.com/dp/B007YA2XN6/?tag=atomicindus08-20

Keep in mind most commercial DC motor drives only max out at 1 or 1.5HP on 120v input. To get the full rated power of the motor, you'll need to run the drive at 230v.

 

[manwithtools]

The one AL linked to is pretty expensive and comes in a NEMA 4 enclosure. If you can fabricate a box to put one in, you can buy the chassis and speed pot separately and save a bunch of money. I think you also need a plug in horsepower resistor with these if I remember correctly.

https://smile.amazon.com/KB-Electronics-KBWD-16-Drives-Chassis/dp/B007YA3FHO/ref=sr_1_1?s=industrial&ie=UTF8&qid=1502035421&sr=1-1&keywords=kbwd

KB makes great products, link to their offerings :
http://www.kbelectronics.com/Variable_Speed_DC_Drives.html

 

[Mr. T]

KB makes great products

I'd second this. In my experience they are pretty much THE industrial DC motor drive for low HP motors. More or less bullet proof.