need some help with treadmill controller

[Mr. Wonderful]

I am doing a treadmill conversion on a drill press. I have the parts all pulled. If I connect it with the treadmill control pannel I can get it to come on for a couple seconds then it gets an error code. I tried hooking it up with just the power source shown. I can get no movement on the motor. The red, black, and white wires shown are to a potentiometer but that port had some sort of sensor that went to a wheel on the treadmill running surface. Is this a useable power source? I want variable speed for my drill press.

Any help is greatly appreciated.

 

[MBfreak]

My eyes are to old to read the schematic text. It is quite fuzzy and hard to read
But
q but that port had some sort of sensor that went to a wheel on the treadmill running surface uq
That may be a surface speed feedback signal so that it in fact is a closed loop control system.
If so, if there is no feedback speed signal the motor will start and then cut out, since it detects no speed feedback. '

Just guessing

Ola

 

[QwikKotaTx]

Is the board for certain functioning correctly? Typically the board goes out before anything else. You can use a simple a/c speed controller and a rectifier to convert to dc. Check on YouTube for a guide with part numbers.

Sent from my SM-G900V using Tapatalk

 

[Mr. Wonderful]

Qwik/Dog,

Am I understanding you correctly, are you saying this board is probably not worth the trouble trying to make it work? I was looking at a DC controller on Amazon for about $26. I have no problem spending the money. I was just thinking that this board was designed to go with the motor so it would be the best option???? Forgive my electrical ignorance.

Thanks

 

[dogdog]

Qwik/Dog,

Am I understanding you correctly, are you saying this board is probably not worth the trouble trying to make it work? I was looking at a DC controller on Amazon for about $26. I have no problem spending the money. I was just thinking that this board was designed to go with the motor so it would be the best option???? Forgive my electrical ignorance.

Thanks

what MBfreak point out... the error code is probably expecting a feed back from a mechanical switch some where on the treadmill to sense as movement... and the micro controller shuts down if it does not see those pulses, not sure what or how the pulse interact with the controller... but it is expecting to see pulses or just 5VDC when that switch closes.........in your block diagram that says reed switch/safety switch... can you emulated it? not sure if just shorting in would cause any damage... not sure where it is in the board... I don't see it in the pics... but definitely not the ones on the big terminal spade... those might be for the motor and high voltage...




As far as those ebay controllers.... be careful on buying them... a lot of the DC ones are just PWM controllers and requires a power supply source... getting a right DC power source would be challenging I think...

I have gotten a Minarik one from ebay, for about $30-$50... as well as a KB electronic DC motor controller... select-able voltage but requires a matching resistor... There was a Ryan post on his old bandsaw conversion sometime back using similar setups... maybe read that.?

I'll post it if I find it...

https://www.ebay.com/itm/Minarik-MM...957009&hash=item3f0813e484:g:rj8AAOSwke9aAOG8


https://www.ebay.com/itm/KB-Electro...:vRAAAOSw9mFWHsR5:sc:USPSPriority!11219!US!-1

Right...

This is the newer one I see recently... not sure what it is inside... might just be what QwikKotaTx's youtube link inside... dunno..

https://www.ebay.com/itm/The-Black-...m=303159304376&_trksid=p2047675.c100005.m1851

 

[dogdog]

This post... might help you.

https://www.garagejournal.com/2015/02/vintage-craftsman-bandsaw-dc-conversion/

 

[dogdog]

Qwik/Dog,

Am I understanding you correctly, are you saying this board is probably not worth the trouble trying to make it work? I was looking at a DC controller on Amazon for about $26. I have no problem spending the money. I was just thinking that this board was designed to go with the motor so it would be the best option???? Forgive my electrical ignorance.

Thanks

If you are talking about ones like this...
https://www.ebay.com/itm/DC-Motor-S...m=172941946475&_trksid=p2047675.c100005.m1851

they are just speed controllers, means DC voltage in, pulsed width modulated (PWN) DC out... , no power supply... finding a 90VDC 120VDC or 180VDC power supply would be challenging for you. so just watchout.

 

[Mr. Wonderful]

dogdog, thank you so much for all of the input. This is the item I was looking at on Amazon - AC DC 110V 24V-90V Motor Speed Controller Switch Electric Regulator for Permanent Magnet 400W DC-51.

I hope it's the right part.

 

[dogdog]

dogdog, thank you so much for all of the input. This is the item I was looking at on Amazon - AC DC 110V 24V-90V Motor Speed Controller Switch Electric Regulator for Permanent Magnet 400W DC-51.

I hope it's the right part.

Dunno what that controller is... but it's only 400W... means about MAX 1/2 HP..

https://www.amazon.com/dp/B076KPP92X/?tag=atomicindus08-20

YMMV of cause... a lot of the users had their controller burned up after a while in the comments... Treadmill motors are 1HP to 3HPs I think.... at least the one I have are 2HP and 2.5HP... 1HP is supposedly 745Watt... not sure about your motor...

 

[alfredeneuman]

1HP is supposedly 745Watt... .

That is a bit misleading.
It doesn't account for any losses, and no motor is 100% efficient

 

[RPH]

The reed switch by the motor is triggered by a magnet mounted to a wheel. It’s looking for a 5 vdc signal. As speed increases so does this pulse train. It’s a simple form of feedback.

 

[dogdog]

That is a bit misleading.
It doesn't account for any losses, and no motor is 100% efficient

True then again no power supply is 100% efficient as well... I think some where in that seller pool of that controller, they rated that as 1/3 HP only even though @400watt... but either case it won't drive the 2HP and up treadmill motor that the OP has too well, at full power is when those people in the comments reported the burn outs. I have no personal experience on that controller, just reading the specs and comments........ I still have 2 of those treadmill motor sitting because of this..and sitting waiting for a project I remember glance at those...

This is the one I notice new on ebay and on my watch list recently..

https://www.ebay.com/itm/The-Black-...m=303159304376&_trksid=p2047675.c100005.m1851

The reed switch by the motor is triggered by a magnet mounted to a wheel. It’s looking for a 5 vdc signal. As speed increases so does this pulse train. It’s a simple form of feedback.

I think op is looking for a way bypass it , to make his controller the motor without it... I wonder if the OP can take that reed switch off the treadmill and mount it to the drill press pulley somewhere with a hobby magnetic to emulate the flywheel that the controller wants. Not sure, mine never came with a controller.

 

[Mr. Wonderful]

Ok wow a lot of info here. I'm reading that the factory control board is not the way to go. And I see that the controller I was looking at is not enough watts? I watched that video, it was very helpful. I decided to go that route.

Thanks again for the help all!

 

[RPH]

Why not the original controller? You have it and it’s matched to the motor.
A rare earth magnet mounted to the pulley and a reed switch wired to the controller points should handle the feed back. Most expensive part will be the reed switch and that only a couple dollars. Only concern I would have is the speed of rotation and controllers ability to count the pulses.
https://www.newark.com/hamlin/mdsr-4-22-38/switch-reed-spst-no-500ma-200vdc/dp/01C1811
$1.18 each. Not much to gamble, the magnet may cost more!