Re: Help - G340 problem ?

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "dakota8833
<dakota8833@b...>" <dakota8833@b...> wrote:

> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "ftomazz

<filipetomaz@p...>"

> <filipetomaz@p...> wrote:
> > Filipe Tomaz, Portugal
> >
> > Hi there. I'm wiring one gecko and one servo motor.
> > I think that all is ok, but I'm having a problem.
> >
> > -> When I power on, the motor starts imediatly.
> > After power on, the fault goes on for about 1 second, then that

motor

> > starts without any control.
> >
> > I have 36Vdc on the gecko, commun ground configuration (inside

the

> > gecko) that is connected to the ground of the juntion board.
> >
> > For trying, if I use step and direction both connected to 5+ OR

to

> > commun ground, the same happens. But if both dir and step == 0

the

> > motor should be still ?
> >
> >
> > If you suspect of anything, ask me for more detail.
>
>
>
> Try swapping the encoder A and B channels ,.. for some reason this
> makes a difference on some setups. I have Camtronics servo's and

had

> the same trouble. Did your servo's come with US digital encoders?
>

Yes.

> Note : with no step and direction signals the servo will bounce

back

> and forth between encoder marks. If there is a problem with the
> encoder circuit then the motor will run away.

Thanks (to you and to all that made a reply). The problem was in the
encoder. One broken wire (the index A wire).

Well it now works !!!! CNC here I'm comming ...

Filipe Tomaz

>
> Frank
>
> FRP Enterprise
> >
> > For off list use filipetomaz (at) portugalmail.pt
> >
> > Thanks to all.