RE: [CAD_CAM_EDM_DRO] Bad Vibes, RFI?

Well Marc, you have already done a number of things right to help and
eliminate any RFI problems (good case, proper breakout board, good
connectors). It is worth while to use shielded wire for the encoders and
don't forget to ground the shields in a star not at both ends. Also if you
are using twisted pair shielded wire like I am, I will give the same advice
I received (hope I remember it correctly). Connect one encoder channel and
the positive supply wire on one pair and the other encoder channel and the
negative on another pair. I had hooked it up with both encoder channels on
the same pair and it was suggested that the capacitive coupling could cause
problems.

Last suggestion is ask lots of questions if you are unsure.

Tim
[Denver, CO]
Fellow satisfied owner of a crummy 3 in 1

> Hello all
> My boys and I are putting together a 4 axis CNC mod of one of those
> evil, wicked, mean, and nasty, pinko-commie conspiracy bred combo-
> machines. ;) As total newbies on this stuff, we are wondering if
> anyone out there has run across any RFI or whatever problems caused
> by long wire runs to the servo motors. We are using Camtronic
> supplied servo motors, Dan's case and parts kit, with Gecko 320
> drives. Computers will not be a problem as the slowest we have in
> our homebrew pile is a P-350 'celery', with lots of RAM and running
> Vector and VCarvz.
> Eventually, we will be making a large CNC router table of one sort or
> another and we would like to experiment with using same control box
> setup and just switching the wire bundles as needed for each
> setup...the combo will be in an adjacent room from the router. (that
> is if the electronic differences for each system do not make
> adjustments too much of a problem each time.)
>
> Thanks one and all for sharing advice on this group. Doing business
> with Camtronics, Geckodrive, and IMServe has been easy and all
> involved have been as helpful as several of you have pointed out.
>
> Marc & boyz
> from the bushes in Oregon
> FAQ: http://www.ktmarketing.com/faq.html