Single phase to three phase equivalent

[mksj]

Might be a metric size frame, like a 100L. You will need to pull the motor and check all the dimensions and see if it is a standard motor frame, otherwise fabricate an interface plate and shaft extension.

 

[Suzuki4evr]

Might be a metric size frame, like a 100L. You will need to pull the motor and check all the dimensions and see if it is a standard motor frame, otherwise fabricate an interface plate and shaft extension.

Is this the size motor you recommend or is this what you think I have? Reason for my question is that I see the information you gave me is a 3HP motor,but I know for a fact that my current motor is 2HP single phase,because I can make that part out with the naked eye, but you can't see it on the picture.

 

[ErichKeane]

Motor size and frame size aren't connected. 100L is a frame size. Grainger has anywhere from a 1.5 to a 4 HP version of this available.

"Frame size" is the bolt pattern for connecting your motor to your machine. If you match the "Frame Size" of the new motor, it should simply bolt onto your machine with no modifications. Many motors across many manufacturers are available in each frame size, in a large variety of power, RPM, and duty.

He's suggesting you pull the motor off the machine, use the measurements of the bolts on the motor themselves (not the adjustment ones, the ones from that plate to the motor), and then look up which 'frame size' that ends up being.

 

[DavidR8]

Is this the size motor you recommend or is this what you think I have? Reason for my question is that I see the information you gave me is a 3HP motor,but I know for a fact that my current motor is 2HP single phase,because I can make that part out with the naked eye, but you can't see it on the picture.

I believe what @mksj is suggesting is that the frame size is possibly 100L.
Edit: what @ErichKeane said

 

[Suzuki4evr]

Ok thanks. I am learning as we speak.

 

[Suzuki4evr]

So I finally got a three phase motor and VFD more than a year after I last posted. I went with a 2.2 kw(3HP) three phase motor and VFD. I am busy with a new base plate for the new motor simply because the new motor can't be slotted for belt tentioning and I don't want to fit the single phase motors flange on the new motor. Now I also want to fit a tachometer but I don't know what to look for. I am looking for something I can get in ebay. Is there something I should look out for or take in consideration? Also how would you wire it to the vfd?

Michael

 

[rabler]

So I finally got a three phase motor and VFD more than a year after I last posted. I went with a 2.2 kw(3HP) three phase motor and VFD. I am busy with a new base plate for the new motor simply because the new motor can't be slotted for belt tentioning and I don't want to fit the single phase motors flange on the new motor. Now I also want to fit a tachometer but I don't know what to look for. I am looking for something I can get in ebay. Is there something I should look out for or take in consideration? Also how would you wire it to the vfd?

Michael

3HP motor & VFD sounds like a good choice. You'll want to wire the motor directly to the VFD outputs without going through any switches or contactors. Good luck with the base plate fab.

Usually with a tachometer you mount the sensor somewhere on the spindle, after the pulleys, so you get the RPM of the cutting tool. I'd suggest a magnetic (hall effect) system. It doesn't get wired into the VFD at all.

 

[Suzuki4evr]

I'd suggest a magnetic (hall effect) system

Can you explain what this is?

 

[rabler]

Can you explain what this is?

Basically a magnet mounted on a moving shaft, with a sensor mounted so the magnet passes very close once per turn, coupled to a remote display.
Here's an example of one from Amazon: Note that is just the first one that popped up in a quick search, I'm not recommending it in particular over any other one.

 

[Suzuki4evr]

Here are the motor and vfd specs and busy flycutting(skimming) the baseplate.


I will post again soon.

Michael