Re: EMC spindle speed control

--- In CAD_CAM_EDM_DRO@y..., Ray <rehenry@u...> wrote:

>
> From: machines@n...
>
> >Marty
> >There shouldn't be any need for feedback. I run two Ahha's that

put

> >out 0 - 10v for the VFD. The machine macro file can be edited so

that

> >you get the right voltage for the speed.
>
> John
>
> You might need spindle speed feedback if you were trying to hard

tap or

> thread.
>

Ray,
I would also need something a bit better than a 7 1/2 Hp 440v three
phase motor.
Using thread mills I've never had a need to hard tap.