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- Do you use EMI filters and/or ferrites in your controller cabinet? What works?
Do you use EMI filters and/or ferrites in your controller cabinet? What works?
06 Dec 2022 19:36 #258730
by Sray69
Do you use EMI filters and/or ferrites in your controller cabinet? What works? was created by Sray69
I am learning about filters and ferrites before I build my controller cabinet so that I can implement them during the build. But I need some help with the following questions.
Questions:
I know a lot of people say I don't need to worry about EMI in my build, especially since I am not running a inverter/spindle yet. But I would rather include some cheap/easy EMI/RFI reduction methods up front instead of tracking them down and having to redo things later. Plus I do plan on upgrading components later which will most likely add more noise/interference.
What has worked for you? What hasn't?
Thanks
Questions:
- Which type of ferrite do I use? Ni-Zn or Mn-Zn?
- What frequency range ferrite do I use?
- What wires/cables do I put the ferrites on?
- Best location for EMI line filter?
I know a lot of people say I don't need to worry about EMI in my build, especially since I am not running a inverter/spindle yet. But I would rather include some cheap/easy EMI/RFI reduction methods up front instead of tracking them down and having to redo things later. Plus I do plan on upgrading components later which will most likely add more noise/interference.
What has worked for you? What hasn't?
Thanks
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08 Dec 2022 22:48 #258923
by andypugh
Replied by andypugh on topic Do you use EMI filters and/or ferrites in your controller cabinet? What works?
I would always recommend putting inout filters on a VFD, but I have not seen the need for general PSUs driving GPIO or relays or similar.
There _might_ be an argument for filtering the power to the stepper supplies, as those have a fairly notchy current demand.
I generally search on eBay for "Rasmi" and find one rated for the correct voltage and current.
There _might_ be an argument for filtering the power to the stepper supplies, as those have a fairly notchy current demand.
I generally search on eBay for "Rasmi" and find one rated for the correct voltage and current.
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