Re: [CAD_CAM_EDM_DRO] temperamental G's

Peter,

Can you turn your lead screws by hand as if there was no power to the
stepper motors?



Bob Campbell

----- Original Message -----
From: "cadcamcenter" <cadcamcenter@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Thursday, January 31, 2002 11:06 AM
Subject: [CAD_CAM_EDM_DRO] temperamental G's


> 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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