Mesa 7i92M Support

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09 Mar 2017 23:47 #89302 by tommylight
tommylight replied the topic: Mesa 7i92M Support
I did test it, it works instantly.
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10 Mar 2017 00:00 #89304 by tuffduck33
tuffduck33 replied the topic: Mesa 7i92M Support
Sure, I have gone back through your posts trying to make sure I didn't miss anything.
Attachments:
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10 Mar 2017 00:21 #89306 by tommylight
tommylight replied the topic: Mesa 7i92M Support
This
# --- CHARGE-PUMP ---
#setp hm2_7i92.0.gpio.019.is_output true
#net charge-pump hm2_7i92.0.gpio.005.out

setp hm2_7i92.0.stepgen.04.dirsetup 2000
setp hm2_7i92.0.stepgen.04.dirhold 2000
setp hm2_7i92.0.stepgen.04.steplen 50000
setp hm2_7i92.0.stepgen.04.stepspace 500
setp hm2_7i92.0.stepgen.04.position-scale 1
setp hm2_7i92.0.stepgen.04.step_type 0
setp hm2_7i92.0.stepgen.04.control-type 1
setp hm2_7i92.0.stepgen.04.maxaccel 0
setp hm2_7i92.0.stepgen.04.maxvel 11000

net machine-is-enabled => hm2_7i92.0.stepgen.04.enable

should be this
# --- CHARGE-PUMP ---
#setp hm2_7i92.0.gpio.019.is_output true
#net charge-pump hm2_7i92.0.gpio.005.out

setp hm2_7i92.0.stepgen.04.steplen 50000
setp hm2_7i92.0.stepgen.04.stepspace 500
setp hm2_7i92.0.stepgen.04.position-scale 1
setp hm2_7i92.0.stepgen.04.step_type 0
setp hm2_7i92.0.stepgen.04.control-type 1
setp hm2_7i92.0.stepgen.04.velocity-cmd 10000
setp hm2_7i92.0.stepgen.04.maxaccel 0
setp hm2_7i92.0.stepgen.04.maxvel 11000
net machine-is-enabled => hm2_7i92.0.stepgen.04.enable

You added or left 2 unnecessary lines and did not add the velocity-cmd line
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10 Mar 2017 01:32 #89312 by tuffduck33
tuffduck33 replied the topic: Mesa 7i92M Support
My apologies Peter, that one should have been obvious. The G540 charge pump came on instantly. Your patience and assistance is greatly appreciated. I will run physical tests next to see if I have those settings correct.
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10 Mar 2017 01:39 #89313 by tuffduck33
tuffduck33 replied the topic: Mesa 7i92M Support
Hey Tom, thanks for all our perseverance is it greatly appreciated. The charge pump is working thanks to you and Peter. I will test the machine parameters tomorrow.
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03 Apr 2017 23:35 #90830 by tuffduck33
tuffduck33 replied the topic: Mesa 7i92M Support
I have made some simple tests. I have a strange result when making multiple passes; the next pass will inset itself about 1/8", forming small stairs instead of a clean, straight profile. Ideas?
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04 Apr 2017 00:16 #90835 by PCW
PCW replied the topic: Mesa 7i92M Support
Typically staircaseing is because of lost steps.

Lost steps can come from mechanical, electrical or timing issues

Possible mechanical causes: loose couplings, binding

Possible electrical issues: noise, wrong step polarities, marginal levels somewhere

Possible timing issues: too short step pulses (use 5000 to start) , too short direction setup or hold times
(use 20000 to start), too high acceleration rate (use 2x max velocity to start)
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04 Apr 2017 00:17 #90836 by andypugh
andypugh replied the topic: Mesa 7i92M Support
Can you give a more complete description of the current problem? Are the multiple passes at the same depth? Is the 1/8" step in X or in Z? In fact, given that is page 9, we could probably use a reminder of whether this is lathe or mill, servo or stepper.
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04 Apr 2017 02:01 #90841 by tuffduck33
tuffduck33 replied the topic: Mesa 7i92M
A recap. I am working on a cnc mill (router) stepper motors controlled a Gecko G540 and have replaced the paraport with the Mesa 7i92M. During the testing process the power supply died and I have replaced it. The VFD is contained alone in a separate metal enclosure apart from the power supply, G540 and the 7i92. The programs are being generated using Vectric Aspire with the Linuxcnc Arcs post processor.

The multiple passes are all same depth and appear to be correct. The stair-casing is affecting both the x and y axis.
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04 Apr 2017 02:32 #90843 by PCW
PCW replied the topic: Mesa 7i92M
Can you post your current hal and ini files?
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