RE: [CAD_CAM_EDM_DRO] Inverter driving surface grinder

I have 2 inverters and use one to run the 4 hp motor on Bridgett and the
other to run the additional 3 hp Setco spindle I added to Bridgett. Both
are smooth as could be. I have never run them on true 3 phase to
compare, but they are definitely smoother on the VFD than with a static
converter.

Tim
[Denver CO]

> -----Original Message-----
> I am considering using a VFD to run my surface grinder from
> single phase. It currently has a step pulley arrangement to
> allow speed changes for different wheel sizes. The VFD would
> allow me to replace the V-belt with a multi-groove flat belt.
> This would reduce belt vibration and eliminate manual speed
> changes. The belt is a PITA to get to.
>
> Would the VFD introduce vibration at the wheel, thus negating
> the value of a better belt system?
>
> Doug
>
> PS: automationdirect now has fractional hp inverters that run
> on 120V single phase input and they are dirt cheap.
>