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Post by wozzan on Oct 8, 2017 17:02:42 GMT
Hi I finally got everything working and cut a test piece to check on the X, Y and Z accuracy. It was great to see it running and was pretty close, X out by .4mm and Y out .8mm over 100mm. I ran a number of dry runs without a cutter and homed the machine every time. The homing cycles worked fine and then after actually cutting the path when I went to home the machine it moves the Z axis down, 7.1 mm twice and then completes the X & Y cycles properly. I did adjust the $100 and $101 settings for the accuracy but I don't think I made any other adjustments by mistake. I tried searching for a solution but have not found one. Any help would be appreciated  |
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Post by Derek the Admin on Oct 8, 2017 17:27:31 GMT
On a homing cycle, z is supposed to move down once after contact, back off 4mm, recontact the switch, then back off 4mm. Are you saying it's backing off 7mm? If so I would expect it to be pulling off 8mm instead. I'd suggest checking driver placement to make sure they are on M0 and M1.
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Post by Derek the Admin on Oct 8, 2017 17:29:34 GMT
Actually I just reread that. That is puzzling. Have you tried restarting the program?
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Post by wozzan on Oct 8, 2017 18:31:08 GMT
No It never goes up, only moves down twice each time. if I leave it and do another homing cycle it moves down another two times.
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Post by wozzan on Oct 8, 2017 18:42:05 GMT
Yes, I just tried unplugging the machine, closing UGS and then starting up again.
I tried homing without a file open with the same result.
I then opened my test file and tried again with the same result.
Really strange, since it was working originally
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Post by Derek the Admin on Oct 8, 2017 18:53:32 GMT
Does z move up when jogged upwards?
If so I suspect the Z is triggered, such as by two terminals touching.
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Post by wozzan on Oct 8, 2017 19:07:38 GMT
Yes it does move upward when I jog it, which terminals would possibly be touching?
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Post by wozzan on Oct 8, 2017 19:25:36 GMT
Derek, I just found it, the one lead from the capacitor on the Z homing switch is broken about 1 mm from the capacitor.
If I hold it so it touches, the Z cycle works as it should.
Can I buy another from you, I was also going to see if I could buy a few of the drop in T nuts so I could make a fitting to hold the power cable in place. Thanks for your help as always, Warren
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Post by Derek the Admin on Oct 8, 2017 19:31:40 GMT
The spade connectors coming off NO and COM or maybe an aluminum chip (if you milled any) is bridging it on the board. When you turn verbose output on (please see our video on homing that is in the video tutorial sticky) in UGS platform does it indicate "Pn: Z" at the end of the verbose output?
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Post by wozzan on Oct 8, 2017 19:39:49 GMT
 I did try that and see the Pn: Z although I did find the issue as I mentioned above, our comments must have passed each other when posted, thanks |
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