RE: [CAD_CAM_EDM_DRO] Percentage Spindle Power meters

> -----Original Message-----
> washcomp wrote:
>
> >I've seen "Percentage Spindle Power" meters and the like on some CNC
> >pendants. Any idea what/how is used? I suppose they are
> >ammeters, Do they use current transformers or what?
> >
> >
> They probably get it from the VFD. Many higher-end VFDs have
> a way or sending an analog load signal out on one of the terminals.
>
> Jon

Bridgett (Bridgeport Series II) Has one of these that is original for
the factory. The machine did not have a VFD until I added it. Not sure
how the meter works as I wired the motor directly to the VFD and
bypassed all the ancient stuff in the cabinet. One of these days I would
like to figure out if it is possible to hook-up the percentage meter
with the VFD as it would be cool to watch.

Tim
[Denver, CO]
Visual Mill 5.0 Basic at prices too low to post

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