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Plasmac
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Thc velocity low
Thc velocity low
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22 Sep 2021 02:07 #221316
by paulsao
This is the 9v battery test well it actually has 7.5v but according to the calculations it is ok? Those values
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22 Sep 2021 02:23 #221317
by snowgoer540
Check the battery with a multimeter and then verify the arc voltage displayed in plasmac matches
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22 Sep 2021 10:15 #221332
by snowgoer540
That would seem to be a problem then.
These two values in the config tab are what control that:
arc-voltage-offset=3728.125
arc-voltage-scale=0.008314
It would seem that you have not calculated them correctly, as a 7.6v battery should show 7.6v on the GUI.
You might try this calculator to help you:
jscalc.io/calc/NTr5QDX6WgMThBVb
Otherwise we'd need more info about your setup.
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22 Sep 2021 12:14 #221337
by tommylight
Another stab in the dark, but can you check what is the value of
plasmac.thc-feed-rate
pin?
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22 Sep 2021 13:52 #221343
by paulsao
Thanks guys for your time, these are the values, actually the scale was fine since when I took out the wires from the plasma voltage I forgot to put the 1M resistor.
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22 Sep 2021 14:16 - 22 Sep 2021 14:45 #221344
by snowgoer540
Pretty sure you need to leave any scaling resistors in place when doing this test, and they need to be accounted for in the calculations for the calculations to be correct.
But I dont use a scaling resistor, and I've not done the math, so someone else will have to chime in and confirm.
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22 Sep 2021 14:19 #221345
by tommylight
All looks good, thank you.
Not related to this but you might want to change the VAD threshold to 60-70%.
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22 Sep 2021 15:16 #221349
by paulsao
It's a little better with the VAD change to 70, but I think I'm demanding too much for cutting at 1200mm / min and tilting the photo about 30 degrees is not fast enough to maintain height and ends up gluing the metal.
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22 Sep 2021 16:03 - 22 Sep 2021 16:07 #221353
by PCW
What are your Z axis MAX_ACCELERATION and MAX_VELOCITY values?
Last edit: 22 Sep 2021 16:07 by
PCW.
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User Interfaces
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Plasmac
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Thc velocity low
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