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15 Sep 2015 01:22 - 15 Sep 2015 01:41 #62575
by Todd Zuercher
I am having a lot of trouble with signal noise on a new machine install. I've never had so much trouble with this before with other installs I've done. Here is a picture of the mess I'm seeing. Anyone have any suggestions how to reduce or filter the noise problem. I am also not to sure of the real source of the noise. I am pretty sure it is related to the servo drive. (when I disable it the noise stops)
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15 Sep 2015 17:42 #62610
by andypugh
Anyone have any suggestions how to reduce or filter the noise problem.
Fit an input filter to the servo power feed wires, and possibly run the motor power cables through a common-mode choke.
You might also want to see what happens with the servo drive moved outside the box (if the wiring allows that). I suggest this to help determine if the interference is from the drive or the cable runs.
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15 Sep 2015 19:36 #62613
by cncbasher
as well as Andys suggestion , run all low voltage cables as screened , especially limits and home
you could also use a buffered breakout with opto's if it's real serious .
make sure low voltage cables are also ran as far from 3ph or power lines as possible
and definately not parallel to them .
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