Re: wiring Gecko drivers

Robert, if you follow my bad experiences this week, you will realize
how tricky the wiring of the Gecko drives to the Bridgeport original
stepper motors is. I think Mariss at Gecko will probably have the
solution for us, but the discussion group participants
certainly have great input. I will let you know if I get mine
figured out. If I do, it might save you a lot of headaches and
expense. I only hope that I can... after another evening past
midnight.

Wearily

Keith Clark
clarkfamliy5@...

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

> Keith:
>
> My stepper motors are not connected, cables were cut at control

cabinet,

> original control cabinet discarded.
>
> Robert
> rob.will@v...
>
> ----- Original Message -----
> From: "theokspindoctor" <mail@t...>
> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Monday, August 16, 2004 9:44 PM
> Subject: [CAD_CAM_EDM_DRO] Re: wiring Gecko drivers
>
>
> >
> > --- In CAD_CAM_EDM_DRO@yahoogroups.com, "Robert Williams"
> > Robert,
> >
> > Are you able to move the axes? I just tried to wire my z axis

motor

> > another way and burned out the Gecko for the second time... I do
> > have my limit switches working but not the z axis home sequence.
> > What software and what motion control board are you using? I

have

> > not figured out how to get the brake to function yet.
> >
> > Keith
> >
> > <rob.will@v...> wrote:
> > > Kieth:
> > >
> > > 210's came with the de-wired mill I purchased 10 months ago. I

now

> > have the
> > > spindle spinning, pneumatic speed control and brake

functioning,

> > added
> > > switches for Bijur lub and mist. I need help understanding BP
> > limit and home
> > > switches, and the Sigma motors.
> > >
> > > Robert
> > > rob.will@v...
> > >
> > >
> > > ----- Original Message -----
> > > From: "theokspindoctor" <mail@t...>
> > > To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> > > Sent: Monday, August 16, 2004 8:59 PM
> > > Subject: [CAD_CAM_EDM_DRO] Re: wiring Gecko drivers
> > >
> > >
> > > >
> > > >
> > > > Robert, I am thinking I will have to upgrade to 210s why

did you

> > > > use those instead of the 201s?
> > > >
> > > > I understand the phase a and b are for one winding and the c

and

> > d
> > > > for the other winding. Be careful because it is easy to wire
> > them
> > > > incorrectly and burn out the Gecko drive. We need to stay in
> > touch
> > > > so we can help each other. Once I figure out how to make it
> > work on
> > > > mine I will be glad to tell you what I did.
> > > >
> > > > keith clark
> > > > clarkfamily5@c...
> > > >
> > > > --- 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...
> > > > > >
> > > >