Re: Percentage Spindle Power meters

Jon:

You are correct. I just looked up the specifications of one of them
and it has an analog output (selectable 0-10 volts, and in ma) which
can show either the current, the frequency and a third signal (which
I don't understand so I guess it doesn't matter ;-)

Jeff

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Jon Elson <elson@p...> wrote:
>
>
> 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