Re: VSD QUESTION

THANKS BOB I AM USING THE SPINDLE TO DRIVE A DIAMOND GRINDING WHEEL
TO CUT A TUNGSTEN CARBIDE TOOL. THE WHEEL IS 40MMM IN DIAMETER AND I
NEED APPROXIMATELY 20M/S WHICH REQUIRES ABOUT 1100RPM. THE MAKITA
SPINDLE RUNS AT 23000RPM

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Robert Campbell" <bob@c...>
wrote:

>
> John,
>
> What kind of material are you cutting that you want to slow the

speed down?

>
> I have a Makita and I like it very much as it is a lot quieter

that my

> Porter Cable.
>
> Bob Campbell
> Bob Campbell Designs
> www.Campbelldesigns.com
> Mach 2/3 breakout boards
> Relay boards
> Spindle Speed boards
> Stepper motors
> Plasma Torch Height control
>
> ----- Original Message -----
> From: "john_glynn57" <john_glynn57@y...>
> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Sunday, January 15, 2006 11:59 AM
> Subject: [CAD_CAM_EDM_DRO] Re: VSD QUESTION
>
>
> > THANKS FOR THE ADVICE BOB. THE ROUTER MOTOR THAT I AM USING IS A
> > MAKITA SINGLE PHASE AC MOTOR WIRED FOR 230V AC. DO YOU THINK

THAT I

> > WOULD GET THE APPROXIMATELY THE CORRECT RESULT IF I USED A

STANDARD

> > 230-110 STEPDOWN TRANSFORMER THAT I CAN READILY PICKUP CHEAPLY.
> >
> > JOHN
> > --- In CAD_CAM_EDM_DRO@yahoogroups.com, "Bob Muse" <mtebob1@s...>
> > wrote:
> >>
> >> Hi John
> >>
> >> If your router has brushes, it is most likely a "universal
> > motor". This
> >> may be operated on AC or DC. One easy way to control the speed

is

> > just by
> >> controlling the input voltage with a variac. There may be other
> > controllers
> >> designed to do this job also--but the three phase VFD is not a
> > good choice.
> >>
> >> Bob
> >>
> >> ----- Original Message -----
> >> From: "john_glynn57" <john_glynn57@y...>
> >> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> >> Sent: Saturday, January 14, 2006 2:54 PM
> >> Subject: [CAD_CAM_EDM_DRO] VSD QUESTION
> >>
> >> > I WANT TO USE A TOSHIBA VSD TO CONTROL THE SPEED ON A SINGLE
> > PHASE
> >> > ROUTER MOTOR. THE VSD IS RATED AT 1.5KW BUT HAS A 3 PHASE

OUTPUT

> > AND I
> >> >
> >>
> >
> >
> >
> >
> >
> >
> > Addresses:
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