Re: Speed control

I am looking for a VFD that the CAM software can control. Can you
please tell me the www site or brand name and model of a computer
controlled VFD that uses 110V/110V?

Thanks,

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Jerry Kimberlin
<kimberln@c...> wrote:

> Jack Hoffa wrote:
>
> >I have a 5HP rotary phase converter running my lathe (3HP) and Mill
> >(2HP). I am upgrading both to CNC. How do I control the spindle
> > speed-? VHD ? 2 VHD's ??
> >
> I have VFDs on both my mills and on my lathe. All three are

different

> brands. Each can be computer controlled or manually controlled.

So you

> can control the spindle speed with a VFD but, more importantly, it

is a

> matter of finding the proper CAM program that will do the job. I

think

> the question you should be asking relates to software spindle

control

> via CAM software packages.. The VFD can operate like a stepper

driver

> board (to some extent) but won't give you positioning data that you
> might need on a lathe spindle for threading. In any case, computer
> controlled or not, a VFD is a lot better than a rotary phase

converter

> since you will have manual speed control if nothing else.
>
> JerryK