Speed controllers for 220v 1 phase motors

[ktmoutfront]

I bought a shop fox band saw as seen in the cool tools thread. Has a 230v 1 phase motor on it, dual capacitor start, 8.7 amp. I want to speed control it. Will something like this work?

Amazon.com

Or do I need to step up to something like this?

Eujgoov 220VAC Variable Frequency Drive VFD Speed Controller for Single-phase 1.5kW AC Motor - - Amazon.com

Eujgoov 220VAC Variable Frequency Drive VFD Speed Controller for Single-phase 1.5kW AC Motor - - Amazon.com

www.amazon.com

 

[Tnsejed]

This is completely late, sorry. The VFD will do it, but can make the motor run hot under full load, and under slower speed the torque may be minimal at best. Note that I've only been told this, and not experienced it. Single phase AC motors are non-existent in my shop.

The best way would be either DC with a DC speed control, or a 3 phase motor run off single phase using a VFD (upsized VFD is needed). Both of those options will work and last you a lifetime. Note that DC industrial motors can be had for dirt cheap if you can hook one up.

For your project I don't think you have to go this far though. I don't know the machine, but what I'd be doing is finding the blade tooth config you want to use, calc your recommended surface feet per minute, and get your RPM needed. From there get a set of pulleys for the drive belt which will get you close. If it uses a direct connection then some quick fab work is in order.

 

[ktmoutfront]

3 phase is something that I have never messed with. I did get the original motor. 3 phase. A converter of some kind from single to 3phase according to the original specs. Converter died. He said he could not find one and put the single phase motor on.

I will look at the original converter to see what it is.

 

[Bent77]

Call Aaron

 

[Tnsejed]

If its got a 3 phase AC motor in it your set. You just need a VFD. I run Lenze SMvector drives on my small machines, but I just looked at prices and its ridiculous for those, they also aren't in stock anywhere. So I think its a supply chain issue.

So just a upsized VFD (I.E. 1hp motor use 2hp drive) that is single phase in to 3 phase out. Set it up for soft start and you're set.

 

[ktmoutfront]

That is what I was trying to figure out. 1 phase in 3 phase out. I believe that is what was originally set up with. I have all of those parts including the motor. The VFD is what died, I assume.