Servo Spindle motor encoder Mesa 7i76e

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6 years 7 months ago #161603 by Erikcnc
Replied by Erikcnc on topic Servo Spindle motor encoder Mesa 7i76e

PCW wrote: Can you post you hal and ini files?


Here they are. ini file is set to text file for uploading.

Attachment not found

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6 years 7 months ago #161606 by PCW
Replied by PCW on topic Servo Spindle motor encoder Mesa 7i76e
I don't see anything obvious wrong in the hal file but using halmeter
or "watch" on these three pins should help track down the issue:

near.0.in1
near.0.in2
near.0.out

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6 years 7 months ago #161798 by andypugh
Replied by andypugh on topic Servo Spindle motor encoder Mesa 7i76e

blazini36 wrote: Since you are not using a timing belt you should spin your spindle by hand and let it drive your motor then you can estimate the difference, how accurate you get is all in how thorough you are. Spin the spindle exactly 1 time and look at how many counts feed back from the motor,


A better way would be to set up a halmeter to count the encoder counts, then zero the encoder and rotate the spindle by hand exactly 20 times (or 50 times if you are very patient). Then divide the total counts by 20. The number you get is the number of motor encoder counts per spindle rotation, and that should be accurate enough for most purposes.

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6 years 7 months ago #161799 by andypugh
Replied by andypugh on topic Servo Spindle motor encoder Mesa 7i76e

Erikcnc wrote: i got in my hal file near.0.scale 1.50 now, still no green light.
also near.0.difference value is 3.333333)


Have a look at the inputs of the near component with a couple of halmeters. You might see that one is RPM and one is RPS, or possibly one is positive and one is negative.

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6 years 6 months ago #162324 by blazini36
Replied by blazini36 on topic Servo Spindle motor encoder Mesa 7i76e

andypugh wrote:

blazini36 wrote: Since you are not using a timing belt you should spin your spindle by hand and let it drive your motor then you can estimate the difference, how accurate you get is all in how thorough you are. Spin the spindle exactly 1 time and look at how many counts feed back from the motor,


A better way would be to set up a halmeter to count the encoder counts, then zero the encoder and rotate the spindle by hand exactly 20 times (or 50 times if you are very patient). Then divide the total counts by 20. The number you get is the number of motor encoder counts per spindle rotation, and that should be accurate enough for most purposes.


I'll agree with you on that, average over 20 would certainly be more precise. Same idea either way though.

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6 years 6 months ago #165800 by Erikcnc
Replied by Erikcnc on topic Servo Spindle motor encoder Mesa 7i76e

PCW wrote: I don't see anything obvious wrong in the hal file but using halmeter
or "watch" on these three pins should help track down the issue:

near.0.in1
near.0.in2
near.0.out


after some other projects i can now continue on the lathe again.

first of all, i hope everyone is doing okay in this situation.

now,

i checkt in hal show the following pins.
Code:
near.0.in1 near.0.in2 near.0.out

only on near.0.in1 i got no respons.

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6 years 6 months ago #165802 by andypugh
Replied by andypugh on topic Servo Spindle motor encoder Mesa 7i76e
Your HAL
Code:
net spindle-vel-cmd-rps <= motion.spindle-speed-out-rps net spindle-vel-cmd-rps-abs <= motion.spindle-speed-out-rps-abs net spindle-vel-cmd-rpm <= motion.spindle-speed-out net spindle-vel-cmd-rpm-abs <= motion.spindle-speed-out-abs ... net spindle-vel-cmd-rps => near.0.in1 net spindle-vel-fb-rps => near.0.in2 net spindle-at-speed motion.spindle-at-speed <= near.0.out

Are you actually controlling spindle speed from G-code?
Does Halmeter show the spindle speed on the motion.spindle-speed-out-rps pin?
Everything looks like it should work.

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6 years 6 months ago #165807 by Erikcnc
Replied by Erikcnc on topic Servo Spindle motor encoder Mesa 7i76e

andypugh wrote: Your HAL

Code:
net spindle-vel-cmd-rps <= motion.spindle-speed-out-rps net spindle-vel-cmd-rps-abs <= motion.spindle-speed-out-rps-abs net spindle-vel-cmd-rpm <= motion.spindle-speed-out net spindle-vel-cmd-rpm-abs <= motion.spindle-speed-out-abs ... net spindle-vel-cmd-rps => near.0.in1 net spindle-vel-fb-rps => near.0.in2 net spindle-at-speed motion.spindle-at-speed <= near.0.out

Are you actually controlling spindle speed from G-code?
Does Halmeter show the spindle speed on the motion.spindle-speed-out-rps pin?
Everything looks like it should work.


also at motion.spindle-speed-out-rps nothing

in my programs i use g97.

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6 years 6 months ago #165813 by andypugh
Replied by andypugh on topic Servo Spindle motor encoder Mesa 7i76e

also at motion.spindle-speed-out-rps nothing.


Is the spindle controlled by M3 / M4 and S?

I am failing to see how the spindle can be controlled by the motion.spindle pins but for there to be no output on one of those pins.

Which version of LinuxCNC are you using?

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6 years 6 months ago #165819 by Erikcnc
Replied by Erikcnc on topic Servo Spindle motor encoder Mesa 7i76e

andypugh wrote:

also at motion.spindle-speed-out-rps nothing.


Is the spindle controlled by M3 / M4 and S?

I am failing to see how the spindle can be controlled by the motion.spindle pins but for there to be no output on one of those pins.

Which version of LinuxCNC are you using?


yes. only thing is that its waiting for the part at a threading cycle. before i switched the encoder it worked fine. excapt that spindle position wasn't correct.

im using 2.4.17

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