My Newb Plasma Table Attempted Build
- dvn4life1972
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18 May 2020 04:44 #168117
by dvn4life1972
Replied by dvn4life1972 on topic My Newb Plasma Table Attempted Build
I don't see a version under the config tab (screenshot attached). Ran man plasmac command and it says version .113 2020 APR 17
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18 May 2020 04:52 #168118
by phillc54
Replied by phillc54 on topic My Newb Plasma Table Attempted Build
OK, open a terminal:Then open LinuxCNC like you normally do and that will get you fairly recent (buildbot is a few days behind at the moment).
Maybe give it a quick run to see if the behaviour is the same.
In the meantime I will go through your config and hopefully have an answer for you in your morning...
sudo apt update
sudo apt upgradeMaybe give it a quick run to see if the behaviour is the same.
In the meantime I will go through your config and hopefully have an answer for you in your morning...
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18 May 2020 04:55 #168119
by dvn4life1972
Replied by dvn4life1972 on topic My Newb Plasma Table Attempted Build
Will do, and thanks.
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18 May 2020 04:59 - 18 May 2020 05:01 #168120
by phillc54
Something you can try is to increase the Arc OK Low to around half your expected Cut Volts.
EDIT: Oops you are using Mode1
Replied by phillc54 on topic My Newb Plasma Table Attempted Build
EDIT: Oops you are using Mode1
Last edit: 18 May 2020 05:01 by phillc54.
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18 May 2020 05:13 #168122
by dvn4life1972
Replied by dvn4life1972 on topic My Newb Plasma Table Attempted Build
Is it better to use mode 0 for arc ok?
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18 May 2020 05:15 #168123
by phillc54
Replied by phillc54 on topic My Newb Plasma Table Attempted Build
No, that is for machines that don't have an Arc OK signal.
What was your original MAX_VELOCITY and MAX_ACCELERATION?
What was your original MAX_VELOCITY and MAX_ACCELERATION?
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18 May 2020 05:17 - 18 May 2020 05:21 #168124
by dvn4life1972
Replied by dvn4life1972 on topic My Newb Plasma Table Attempted Build
Uhhhh 1.5 and 60 *I think*. I changed them several times earlier yesterday trying to get it to play nice, I'll have to go back into my backup (on my other computer) and see what they were for sure.
Edit: AXIS_Z were 1.5 and 60, JOINT_3 was half that.
Edit: AXIS_Z were 1.5 and 60, JOINT_3 was half that.
Last edit: 18 May 2020 05:21 by dvn4life1972. Reason: Added info AXIS_Z and JOINT_3 info
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18 May 2020 05:30 #168125
by phillc54
Replied by phillc54 on topic My Newb Plasma Table Attempted Build
I can't see anything obvious in your config.
You may as well put them back seeing how slowing them down didn't change anything.
Change PID P Gain to 1 to slow down THC then you may need to do some cuts with halscope running to see if we can sort the chickens from the eggs.
You would need to scope plasmac.thc-active plasmac.arc-voltage-in plasmac.axis-z-position plasmac.led-down
Use thc-active as the trigger
You may as well put them back seeing how slowing them down didn't change anything.
Change PID P Gain to 1 to slow down THC then you may need to do some cuts with halscope running to see if we can sort the chickens from the eggs.
You would need to scope plasmac.thc-active plasmac.arc-voltage-in plasmac.axis-z-position plasmac.led-down
Use thc-active as the trigger
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18 May 2020 16:43 #168163
by dvn4life1972
Replied by dvn4life1972 on topic My Newb Plasma Table Attempted Build
Had a bunch of stuff to ship out via post this morning. I'm fixing to do the changes and see what happens. I'll report back in a bit.
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18 May 2020 19:59 - 18 May 2020 20:14 #168184
by dvn4life1972
Replied by dvn4life1972 on topic My Newb Plasma Table Attempted Build
I reset the PID P gain to 1 and turned on THC on a part I just cut. It did not dive at all. I don't think it attempted a move at all though. Going to cut another one and see...maybe it's too slow (needs to be dialed in?).
EDIT: This is a different part (larger outside cuts)...this time the torch went UP under THC until valid arc was lost and then paused. It's only doing this on the outside cuts. The inside cut is basically a small offset from the outside, and it did fine there. It *seems* that it's just doing this on outside cuts.
EDIT: This is a different part (larger outside cuts)...this time the torch went UP under THC until valid arc was lost and then paused. It's only doing this on the outside cuts. The inside cut is basically a small offset from the outside, and it did fine there. It *seems* that it's just doing this on outside cuts.
Last edit: 18 May 2020 20:14 by dvn4life1972. Reason: added new info
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