Checking for proper grounding for a PC based CNC controller
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- čas přidán 20. 01. 2018
- This video should give you a basic understanding of how to check for proper grounding for a PC based CNC controller
There should not be any continuity between the main ground and the negative of the main power supply and the negative of the breakout board. There should also not be any continuity between the negative of main power supplies and the negative of the breakout board.
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it would be helpful to show an error case and proposed resolution.
Sir, I am from India,
I have some doubts. Can You help or do a video on this???
I use the Same RNR Motion card.
1)Can I use Adhesive Aluminum Tape to wrap the Motor Cables and Signal Cables and earth one end to the Chassie to prevent any EMI-related issues..!?
Simply wrapping the cables with a conductive material like aluminum and grounding one end of that wrap to the machine body would discharge any potential voltage spikes that may affect?!
If that is effective,
Grounding to the Chassie or the electronic/digital /DC ground on the controller board? Which is necessary?
That's strange, I thought grounding the negative terminal on the PSU would give a non-floating output PSU, would doing so have bad effects on the CNC?
I am a service tech and every cnc I work on has the low voltage dc circuit grounded. I was wondering if this is because it is pc based or is he trying to isolate something? But you are absolutely right, that 5v circuit is floating.
The first thing checked (chassis) should be named "earth", "protective earth" or "earth ground" for clarity. For the audience of such videos it's way too common to confuse earth/PE and ground/negative voltage.
Hmm... When do you want to have all PSU's floating? All at different reference potentials.
Is this specific to only PC based controller?
Or to specific switch mode supplies?
Hope someone can clarify this.
It’s absolutely not specific to switching supplies. I always ground the output. Unless I want to chase crazy faults all day.
Why don’t you want the dc output grounded? Is this because it is pc based?
I have been chasing ground issues with my machines for years. After switching to ethernet connections the issues went away. Kinda strange.