Author Topic: Motor control boards  (Read 568 times)

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Offline ExplodeyTopic starter

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Motor control boards
« on: June 26, 2019, 04:14:05 am »
Hi everyone!  I have this big ol' motor (picture attached) that someone gave me years ago, and I've just been sitting on it, figuring that eventually I'll have a need a powerful motor.  So I think I finally might have such a need -- to power a pinch roller assembly.  But I've never worked with an AC motor like this one, so before I try to give it some juice, I thought I'd take advantage of all the big brains here at EEV.  From the specs printed on the motor, it looks like I could just connect an AC signal directly from the wall.  But I actually need to be able to adjust the speed and reverse the direction.  When I've worked with DC motors in the past, I've had good luck by using a motor speed control board like this one, https://ebay.us/BYh5bT along with a polarity-reversing rocker switch.  But I'm not sure if there would be an analogous board for an AC motor, and I definitely don't know how you would reverse the direction when you're working with AC.

Anyway, would it be simpler for me to just get a different motor?  I guess I'm just hoping to find a way to rationalize hanging on to this big paperweight for all this time!  ;D

Thanks!
 

Offline MosherIV

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Re: Motor control boards
« Reply #1 on: June 26, 2019, 06:16:11 am »
Hi.

Yes, looks like you just connect it to 110V mains. Make sure you use a fuse.

I do not think you can control speed or direction.
Yes, you can get controllers for AC motors, they are called Inverters (at least in UK). As far as I know they are only for 3 phase motors.

The motor you have is for single phase. The device on the side of the motor is a capacitor, it is there to create a phase difference and that 'alternate phase' is used for another winding on the motor. AC motors need either a phase difference or a rotating phase to start.

 

Offline ExplodeyTopic starter

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Re: Motor control boards
« Reply #2 on: June 26, 2019, 05:34:36 pm »
Alrighty, well thanks for your reply.  I think I'll just buy a DC motor then.  Cheers!
 


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