VFD and AC Motor question

I have a 3 phase Leeson 2HP motor and KBAC-27D controller on my KMG grinder. Controller data:

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I am looking for a motor for disc grinder I can hook up to the same control so I have variable speed on both :) I found a good deal on this 3 phase Baldor motor($100 for a brand new one):
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is that it's 3450RPM For the work I am doing recommended RMP is 1725.

My question: is there any problems running this motor at less than half speed all the time? Any problems swithching between motors with different RPM(my other motor is 1725RMP)?

Thanks, Alex

Reply to
Alex
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You're running the internal fan at less than half speed all the time, so it will likely get hot. I'd look for the right motor, I know it's hard to be patient.

GWE

Reply to
Grant Erwin

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Reply to
RoyJ

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Problem is that it's 3450RPM For the work I am doing recommended RMP is

The 2-pole motor might be OK. But you will get only 1/2 rated Hp at 30 Hz(1725 RPM). Also will get 1/2 cooling, but I don't think you will have a problem unless your duty cycle is very high. You cannot optimize the VFD settings for both motors unless you reset when you change motors. Since the Baldor is so cheap, I would set up the VFD for the 2HP motor and let the Baldor suffer if it becomes necessary. I'm betting it won't.

Randy

Reply to
R. O'Brian

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