Re: G320 Keeps Losing Position!!!!

Dan ,
What do you mean by " there isn't excessive end play in the motor" ?

Ive been driving the same motor with Rutex board Successfully, when I
faced same issue then I switched to G320 !

Shadi

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Dan Mauch" <dmauch@...> wrote:
>
> Your description of "I suspect
> noise problem : the only observation I can tell is that the motor
> sounds like hurt pulsing when it stops , If I move it a little the
> pulsing sound stops for several seconds then restarts !!!! Is That due
> noise ? "
> Sounds like normal dithering .
> I would make sure the X motor and encoder cable are seperated by
several inches. Make sure the encoder cable shield is only grounded on
one end.
> Last take a lok at the X motor and make sure that there isn't
excessive end play in the motor. You will need to check the specs of
your motor to check that.
>
>
> Dan Mauch
> economical 3D scanner software and kits
> low cost stepper and servo motors.
> cases for Gecko drives
> kits and assembled 3-4 axis drives
> www.camtronics-cnc.com
> www.seanet.com/~dmauch
> ----- Original Message -----
> From: shadi_salhab_78
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Sent: Saturday, April 26, 2008 1:39 PM
> Subject: [CAD_CAM_EDM_DRO] G320 Keeps Losing Position!!!!
>
>
> Hi all ,
> Recently I've installed two G320 drivers on identical x and y axis DC
> motor ,
> the Y work perfectly but the x axis motor loses position I suspect
> noise problem : the only observation I can tell is that the motor
> sounds like hurt pulsing when it stops , If I move it a little the
> pulsing sound stops for several seconds then restarts !!!! Is That due
> noise ?
> I grounded the shield at the driver side , and shorted the cable to
> minimum (about 5 feet) but no effect , I replaced the encoder also no
> effect !!! , I switched the drivers it keeps with the x axis motor !!!
>
> What other factors I'm missing here Is it noise or maybe a faulty
> motor?!!!
> Can I put a pull up resistors for the AB encoder channels? does this
> supports the signal ?!!!
>
> I'm totally lost and this machine has to be working soon So pleas help
>
> Thanks,
> Shadi
>
>
>
>
>
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>