Re: [CAD_CAM_EDM_DRO] Rutex Z axis problem--more info

Hi Derek,

Have you contacted Vlad at Rutex about this - he might have some
suggestions? It does sound like a thermal intermittant problem - either
in the drive, cabling or encoder. Intermittants are the hardest to fix.

Can you swap the encoder between axes and see if the problem moves?

Cheers, Peter

tig415 wrote:

>Just to recap the problem I'm having. When ever I make a Z axis
>movement it travels farther than it should by about .015". It does
>it in the Z+ and Z- directions. It's not always .015" sometimes its
>less. Also it's intermittent. It seems to be good in the morning
>when I turn it on but over time it starts to happen and when it does
>it's intermittent. A move as small as .001 will cause it to happen.
>It's maintaining it's accuracy, .001" gives me .001" of movement on
>a dial indicator. I can cut for hours and not loose any steps. If I
>power up the servo amps alone there's no problem but when I turn on
>the drives the Z creeps down .015" then slowly back up.
>I don't think it's a tuning problem. I tried switching the drives
>and it made no difference. I then tried switching the servo amp
>itself and I still had the problem.
>I'm wondering if it may be an encoder issue.
>
>Any thoughts on this?
>
>Thanks
>Derek
>
>
>
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