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a couple questions about ground wiring on the ipac4
Jeff AMN:
You do not bring the ground loop back to the encoder. You just end it at one point, but, I repeat, don't bring it back to your encoder.
javeryh:
God I love that wiring job every time I see it.
um3k:
--- Quote from: Jeff AMN on March 28, 2007, 05:01:17 pm ---You do not bring the ground loop back to the encoder. You just end it at one point, but, I repeat, don't bring it back to your encoder.
--- End quote ---
There is no reason why you cannot being the ground loop back to the encoder, as long as it is tied into the same terminal or to another ground terminal. In fact this is how I have my CP wired, a big loop from one ground terminal of the IPAC4 to the other ground terminal. The advantage of this is that if one connection in the loop breaks, it won't effect anything because you can still ground through the other side of the loop. (Of course if you had two or more breaks, the controls in between them would not be grounded, and therefore not work.) In a single line grounding scheme, if one connection breaks, all the controls after that connection would stop working.
BobA:
--- Quote from: Jeff AMN on March 28, 2007, 05:01:17 pm ---You do not bring the ground loop back to the encoder. You just end it at one point, but, I repeat, don't bring it back to your encoder.
--- End quote ---
This is not true. It is no harm to bring the ground back to your encoder in a loop. Now ground loops in audio cause problems but in the case of encoder it is a benefit. With both ends of the ground taken to the same ground you can get a problem in your ground wiring and it will self correct because it has another path. You will only loose your ground if you have 2 faults in the ground wiring.
NEVER do this in audio or video but for encoders it is fine.
Jeff AMN:
I think I misunderstood what he meant by bringing the loop back. I thought he was going to bring it to a different terminal to try to make a "complete wire loop" of sorts instead of having an endpoint.
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