RE: [CAD_CAM_EDM_DRO] Re: temperamental G's

Or I have had several customers that have connected the disable pins
together but had the fuse out for one axis which causes all three axis
to be disabled.
Dan

-----Original Message-----
From: studleylee [mailto:indigo_red@...]
Sent: Thursday, January 31, 2002 9:24 AM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] Re: temperamental G's

Hi,
Just curious... ideas to try:

1)do you have the 'disable' pin grounded in any way?,

2)or maybe it is a simple as the port driving the step and dir inputs
isnt producing enough current to drive more led's(opto inputs).

3)Try a 9v battery through a 1k resistor to drive the step inputs to
statically test the G210's by themselves.

-Lee

--- In CAD_CAM_EDM_DRO@y..., "cadcamcenter" <cadcamcenter@y...> wrote:
> Hi,
>
> I had 2 of the 3 G201A's working in a driver box when I tested them
a
> short while ago. Without changing anything to these 2 G201A, I
> rewired the third one. When I tested them again, all 3 were silent,
> including the 2 that were working earlier. I had similar problems
> earlier, with the Geckos deciding to go on holiday for no reason
> that I know of. A list member (thanks) helpfully suggested that the
> 3us for the step pulse width was too low, so I reconfigured the
step
> pulse width to 5us. Still no luck. Since I'm hoping Mariss will
soon
> conjure up a new toy for all of us to play with, I do not wish to
> distract him and hope that someone can provide some insight as to
why
> the 2 G201A which were working fine earlier can suddenly fall dumb.
>
> The Geckos are fine products as I have another 3 Geckos in another
> box which are working fine. It is probably something other than the
> Geckos. Is it that the Geckos need a rapidly rising edge for the
step
> pulse and less rapidly rising step pulse can cause the Geckos to
> become temperamental, or Gecko's of different vintage have
different
> requirements, as the other 3 Geckos are working fine with the same
> pulse train?
>
> Many thanks
>
> Peter


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