CNC Machine EMI Interference prevention

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7strideR
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27 Nov 2024 09:05 #315346 by 7strideR

CNC Machine EMI Interference prevention was created by 7strideR

Hello,

I am busy converting my Bridgeport Series 1 Interact to LinuxCNC over ethercat. I have a Delta VFD11AMS21ANSAA which can be controlled via and ethernet port (Not sure how hard its going to be to get it working on LinuxCNC)

But as this is my first CNC machine build, what can I do to prevent back EMI and cross talk between the VFD and the other components like the PC, Servo drives and Beckhoff IO units.

Should the VFD be in a separate Cabinet?
Do I need special Ethernet cables or will normal ones Cat 5e work?

Any tips are appreciated.

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tommylight
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27 Nov 2024 11:50 #315366 by tommylight

Replied by tommylight on topic CNC Machine EMI Interference prevention

Mains filter, ferrite cores on motor wires wound once or twice, proper grounding on all power modules and drives, signal wires shilded and grounded to one side only prefferably near the inputs, all grounds wired to a single point/rail in the box, avoid ground loops, short cables - never coiled.

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Hendrixx
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01 Dec 2024 19:35 - 03 Dec 2024 11:26 #315752 by Hendrixx

Replied by Hendrixx on topic CNC Machine EMI Interference prevention

Last edit: 03 Dec 2024 11:26 by Hendrixx. Reason: not needed

The following user(s) said Thank You: tommylight

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tommylight
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01 Dec 2024 20:52 #315755 by tommylight

Replied by tommylight on topic CNC Machine EMI Interference prevention

I am sure he found it as he left a thank you there!

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