Re: [CAD_CAM_EDM_DRO] 6 wire stepper

the last set I was tring to follow Robs pictures in
his book
--- stratton@... wrote:

> I'm no expert, but I really can't make any sense of
> your second set of
> figures. A six wire stepper should electrically
> look like two
> entirely seperate center tapped coils. You should
> be able to identify
> two groups of three wires with the ohm meter. There
> will be no
> continuity between the two groups. Within each
> group, there will be
> one wire (center tap) which exhibits a low
> resistance to each of the
> other two, while these outer two exhibit about twice
> this resistance
> to each other.
>
> Your phase leads are these outer two of each group
> that exhibit the
> higher resitance. For a bipolor drive you connect
> only these four
> wires and leave the center taps unconnected. For a
> unipolar drive,
> you tie the other two wires together and connect
> them to the common.
>
> If you get it all hooked up and the motor just
> vibrates without
> turning, swap the outer leads on one of the
> windings.
>
> Chris
>
> (PS - I have a motor with the same color wires, and
> on mine the phase
> leads are blue&green and red&yellow. Black and
> white are the center
> taps, although I don't know which is which as I'm
> not using them).
>
> > ok now lets see if I have it right i have six
> wires coming out of
> > the stepper
> >
> >
> > Black
> > Blue
> > Red
> > White
> > Green
> > yellow
> >
> > white/green and yellow Black /Blue
> and Red
> >
> >
> > White/ yellow = 1.1 ohms Black /Blue
> = 1.1 ohms
> > white /Green = 1.1 ohms Black /Red
> = 1.1 ohms
> > green /Yellow = 1.6 ohms Blue /red
> = 1.5 ohms
> >
> >
> > wht ,yel /grn 3.2 ohms Blk,red
> /blue =3.0 0hms
> > wht grn /yel = 3.0 ohms Blk,Blu /
> Red =3.0 ohms
> > yel ,grn/wht = 2.7 ohms red,Blue/
> Black =2.7 ohms
> >
> > does it matter what one I use as a common wire
> between the stators
> > Can I use YELLOW for one and the BLACK for the
> other .
> >
> >
> >
> >
> >
> >
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>
> --
> Christopher C. Stratton, stratton@...
> Instrument Maker, Horn Player & Engineer
> 22 Adrian Street, Somerville, MA 02143
> http://www.mdc.net/~stratton
> NEW PHONE NUMBER: (617) 628-1062 home, 253-2606 MIT
>
>
>
>
> Welcome to CAD_CAM_EDM_DRO@...,an
> unmoderated list for the discussion of shop built
> systems, for CAD, CAM, EDM, and DRO.
>
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> List Manager
>
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