Re: wiring Gecko drivers

Another question. The 201 Gecko puts out 2000 steps per
revolution. My motors are maxing out at 20 inches per minute with
6000 pulses per second. Anything higher stalls the motor and it will
only cry with no movement. Either they are wired wrong or the
motors can not handle the high pusle rate. Would I be better off
with the Gecko 210. It seems from the Gecko website that instead of
fewer pulses the 210 can put up to 10 times more ( up to 20000 steps
per revolution), so that will not solve my problem. Am I correct in
this assumption? or is it that it can go down to 200 steps per rev
which would be better for me.

thanks
Keith Clark

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Robert Williams"
<rob.will@v...> wrote:

> I too have Sigma motors on BP series 1 cnc. My Gecko' are 210's. My
> knowledge is much less than Kieth Clark's.
>
> Connections are labled...
> phase A, phase B
> phase C, phase D
>
> PLEASE tell me how I can identify the phase/wires or which wires

not to use.

>
> Robert
>
> ----- Original Message -----
> From: "theokspindoctor" <mail@t...>
> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Monday, August 16, 2004 8:05 PM
> Subject: [CAD_CAM_EDM_DRO] wiring Gecko drivers
>
>
> >
> > I am confused about how the motors should be wired. I have Sigma
> > motors on the Bridgeport with 4 internal windings. I am only

wiring

> > to 2 of the 4 leaving the 2 not connected.
> >
> > First question is whether it matters which 2 I choose to wire to

the

> > 201 Gecko drive. Should they be 2 across from each other or

next to

> > each other.
> >
> > Second question is since there are 4 terminals on the Gecko

drive to

> > connect to the motors the first two, labelled 3 and 4 recieve

wires

> > from one winding and the other two labelled 5 and 5 receive wires
> > form the other winding. Is that correct? To change direction

just

> > switch wires between 3 and 4 with just changes the polarity on

one

> > of the internal coils. Correct?
> >
> > The way the motors are wired now, as done by my hired installer,

the

> > motor windings selected are across from each other, but terminal

3

> > and 4 are connected to different windings instead of the same.
> > Seems to be wrong to me. The z axis motor is easy to turn when

the

> > power is off suggesting it is wired correctly but it turns

backwards.

> >
> > I can get all axes to move but only up to 20 inches per minute,
> > anything greater causes the motors to stall...
> >
> > Unfortunately Mariss is on vacation...
> >
> > thanks
> >
> > Keith Clark
> > clarkfamily5@c...
> >