Re: [CAD_CAM_EDM_DRO] Servo only moving one way

Yes I am using Gecko drives with Bob Campbells Breakout board and Mach 2
software.
I have niether a logic probe or a oscilloscope to check it.
However the direction light on the board is not lit up as the Y axis is,
however the light on the Y only lights when I jog to the left then goes out
when I jog right. Is this right?
The drivers do not fault, it just will not jog both ways in the X
axis...both key strokes go same way.
The Y axis seems to be ok. I have checked and double check the wires and
they are correct.
Could it be in Mach2 that I'm doing something wrong?


Thanks, Robin

----- Original Message -----
From: "Jon Elson" <elson@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Thursday, March 11, 2004 12:24 PM
Subject: Re: [CAD_CAM_EDM_DRO] Servo only moving one way


>
>
> INDECO wrote:
>
> >Hello all,
> >
> > I am having a little trouble figuring this one out...my X axis will
only move one way.
> >When I jog the X axis both key strokes move it the same way.
> >Help if you can.
> >
> >
> What type of drive are you using? I have to assume a Gecko 320/340, since
> you don't say. What software are you using? Does the Y axis work right?
>
> The Gecko has a direction signal which determines which way it is to move.
> It sounds like the step pulse is getting through fine, but the direction
> is not.
>
> Check your wiring, use a DVM, logic probe or oscilloscope to check the
> direction
> signal to see if it is changing. Geckos need a fair bit of opto current
> to operate,
> somewhere in the 10 - 15 mA range.
>
> Jon
>
>
>
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