Kirk Wallace <kwall...@...> writes:

> 
> If you are using a VFD on your spindle (or coolant pump), having one a
> filter on the power input solved my noise problems.
> 
> http://www.eastek-intl.com/images/PreoSeriesEB.pdf
> http://www.wallacecompany.com/cnc_lathe/HNC/00024-1a.jpg
> 
> If not, using a filter or ferite beads for other power lines might help.
 
 ----------

I checked your photo link. That was helpful. I think I will get a few EMI
filters for the Opto boards and signal power supplies. 

Thanks Kirk!
Tom




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