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VFD use on flywheel grinder

Posted: Thu Dec 11, 2014 11:36 pm
by Sbc406vega
I dont know what im doing OBVIOUSLY... I have a 5hp 220v 3 ph motor. I got me a chinease VFD "Huanyang" to be exact and rigged it up. I just went to smoke test it and hit run and it goes but the motor whines up and the stone is barely turning, like clutch slippage almost. Literally sounds like a jet turbine starting to spin up. So I panicked and shut it down and it slowly whines down. What am I missing here. Its out of the box, do I need to tune the vfd for it? All im needing it for is a phase converter.

Re: VFD use on flywheel grinder

Posted: Fri Dec 12, 2014 6:23 pm
by mitch
The noise is not coming from the phase converter is it
Mitch

Re: VFD use on flywheel grinder

Posted: Fri Dec 12, 2014 7:27 pm
by Sbc406vega
No it's from the motor. Uh oh...I believe I just put 3ph to a 1ph motor. Motor plate is missing so I didn't know until I looked at the same motor at work. I only tried it 2-3 times for a few seconds. Could I have hurt the motor already?

Re: VFD use on flywheel grinder

Posted: Sat Dec 13, 2014 12:50 am
by machinedave
Is it possible that only two out of the three power leads are hooked up to the motor? A three phase motor can sometimes spin very weak on only 2 power leads.

Re: VFD use on flywheel grinder

Posted: Sat Dec 13, 2014 1:02 am
by machinedave
What make and model flywheel grinder is it?

Re: VFD use on flywheel grinder

Posted: Sun Feb 15, 2015 12:06 am
by Sbc406vega
I needed to do a factory reset on the vfd before setting it up for my machine apparently. Who woulda thought...works great now