Re: Series II big stepper details and step mode

I was suprised to read the bridgeport series I and II used steppers.
A friend of mine has both machines and he thought they were servos.
He has the orignal bridgport configuration i think.

He also told me his X axis motor on the series II runs hot and goes
out every year or so.

Does anyone know what stepper switching mode is used in these mills.
Like full, half step, or microstep.

--- In CAD_CAM_EDM_DRO@egroups.com, "Darrell" <dgehlsen@e...> wrote:
> These are 8 wire motors that Bridgeport has jumped to run as
> 6 wire in unipolar mode. You can run these in bipolar by
> using 1 and 6 with 2 and 8 as the simplest wiring or you can
> jump 1 to 5, 3 to 6, 4 to 8 and 2 to seven for parallel
> bipolar or you can leave the jumpers on 5 to 6 and 7 to 8,
> take the white/blue and white/yellow wires off and run
> series connected bipolar.
> There has been lots of discussion on the benefits of each
> mode.
> Darrell
>
> ----- Original Message -----
> From: "Lee & Chris studley" <indigo_red@u...>
> To: <CAD_CAM_EDM_DRO@egroups.com>
> Sent: Saturday, October 07, 2000 8:40 PM
> Subject: [CAD_CAM_EDM_DRO] Series II big stepper details &
> picts so far...
>
>
> > Tim,
> > Here's some detailed pictures of the steppers on the
> SERIES II mills:
> >
> > http://www.users.qwest.net/~indigo_red/files/
> >
> > pic5A.jpg and stepper1.jpg are the connections and ohms
> between coils.
> > At 1st glance these appear to be 6wire wired, but could be
> rewired as
> > bipolar...
> >
> > What do you think? If anyone has comments please share
> them.
> > -Lee
> >
> >
> > http://www.users.qwest.net/~indigo_red/files/
> >
> >
> >
> > At 09:23 PM 10/7/00 -0600, you wrote:
> > >It still is not shipped yet. I talked to the plant
> manager at the company I
> > >bought it from on Monday. He was going to give the truck
> line another call
> > >to see where they are at. Lee used the same line (CME) to
> ship his and it
> > >took 2 months for them to get around to it. The rate is
> tremendous and
> > >according to Lee they did a good job, but the service
> stinks.
> > >
> > >I will certainly keep everyone posted.
> > >
> > >Tim
> > >[Denver, CO]
> > >
> > >> Tim: What is the status of your heavy metal ebay
> purchase? Got it home
> > >> yet? Keep us posted.
> > >> Carey
> > >
> > >
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