Re: [CAD_CAM_EDM_DRO] Re: CNC knocking out phone system?? Help!!!

Hi Ron,

Are you running a VFD on your spindle? That could be a more likely
source of emi than the servos. Depending on who makes your VFD you
might look into an emi filter for the VFD. I had to fit one recently
due to the VFD noise upsetting the temperature control on a nearby
kiln. My VFD was from Practical Automation and the emi filter cost $95
as I recall. It solved my emi problem completely.

Cheers, Peter

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