Re: G320 Keeps Losing Position!!!!

Ok Guys,
I re-tunned both motors I was giving too much Gain and too much
Damping . It helps too much in holding x axis correct position and
lowers drivers heat ... but what I noticed today that loosing position
occurs at milling corners where cutting loads increase too much
besides the x axis movement is already too heavy due to very tightened
ball nuts , but that does not make since because the driver fault led
does not show on !!!

any idea?

Shadi,









--- In CAD_CAM_EDM_DRO@yahoogroups.com, "shadi_salhab_78" <salhab@...>
wrote:

>
> 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
>