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Author Topic: SPINDLE LEAKAGE ISSUE WITH TOUCH PLATE  (Read 1773 times)

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SPINDLE LEAKAGE ISSUE WITH TOUCH PLATE
« on: October 12, 2014, 08:02:03 AM »
I had a Dewalt DW611PK installed in my router and my touch plate worked properly. When I installed the DW618PK router my touch plate doesn't work. When I start the probe operation the z axis goes down very little, then retracts. The LED signaling that both leads have been touched doesn't light.

I took the router out of its mounting, hooked up the probes, and started the probe operation and it worked properly. I then took the old router, laid it across the router mounting brackets to simulate that it was mounted properly, connected the touch plate leads, then started the probe operation and it worker properly. I then took the new router, did the same as above, and it cycled the same as it did origiannly in that it didn't work.

The routers didn't have any power to them in the last debug phase.

So I assume something is going on with the new router, Any ideas on where to start looking?

Offline ger21

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Re: SPINDLE LEAKAGE ISSUE WITH TOUCH PLATE
« Reply #1 on: October 12, 2014, 08:25:46 AM »
How is the router grounded?
It would appear that when you mount the new router, it's causing a ground loop which creates enough noise to trigger the probe input.

You often won't see the LED light up, as the input gets triggered so fast that there's no time for the LED to light up.
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html
Re: SPINDLE LEAKAGE ISSUE WITH TOUCH PLATE
« Reply #2 on: October 12, 2014, 08:43:08 AM »
It is grounded when it is plugged into the 110v power.

I tried it both ways, plugged in and unplugged. The poor results are the same.
Re: SPINDLE LEAKAGE ISSUE WITH TOUCH PLATE
« Reply #3 on: October 12, 2014, 11:50:20 AM »
I agree with the ground loop. Any ideas on how to eliminate it?

Offline ger21

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Re: SPINDLE LEAKAGE ISSUE WITH TOUCH PLATE
« Reply #4 on: October 12, 2014, 11:53:43 AM »
Try grounding the spindle mount with a separate ground wire? Just a guess.
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html
Re: SPINDLE LEAKAGE ISSUE WITH TOUCH PLATE
« Reply #5 on: October 12, 2014, 12:56:01 PM »
Thanks for the suggestion. I grounded the spindle and it still doesn't operate properly.

I think I am going to make a 2 piece spring loaded plastic touch plate with 2 metal button in the plastic pieces,

If grounding the spindle didn't work, then I don't have any idea where to look next.