GUI for PlasmaC - QtPlasmac

It has everything to do with torch height, autovolts is based on the torch height (Phill, correct me if i am wrong here), it is sampled at whatever the cut height is set to and used as a reference,

Its actually sampled at the end of the THC delay provided the current velocity is near the desired cut velocity, otherwise it waits until it is. Then the THC is enabled. If you do not have a THC delay set, then the sampled voltage will be too high as the piercing voltage peak has not subsided so you will get erroneous results.

So auto volts compensates for worn consumables becasue as the electrode is consumed, the arc gets longer at a constant height above the material and therefore higher voltage ocurrs.

If you are using auto volts, you don't know what the voltage set point is so an override makes more sense. The standard number is accepted as being 10 volts per mm of height so a 1 volt override is 0.1mm. (Be aware I measured 7.53 volts on my Everlast so thats just approximate.)

I actually used a speed override yesterday for I think the first time. I was cutting 1.6mm and there is no cut chart for it so I told Sheetcam to use the 2mm settings and applied a speed override. Much easier than adding a new cut chart entry.

RODW Wrote: Its actually sampled at the end of the THC delay provided the current velocity is near the desired cut velocity, otherwise it waits until it is. Then the THC is enabled. If you do not have a THC delay set, then the sampled voltage will be too high as the piercing voltage peak has not subsided so you will get erroneous results.

Can we have a delay value by default if delay is missing o r too short when use autovolts? I mean these delay is required for the proper voltage sampling, that way the non expert can achieve better results.

Hmm,it seems like the Plasmac docs don't really emphasise the importance of this setting. It is however covered in the Primer
linuxcnc.org/docs/devel/html/plasma/plas...imer.html#_thc_delay

It is very machine dependent. I've not done any tests but I believe its tied to machine acceleration which I did not understand until recently. I think we need to run some tests in halscope. Based on one knowledgeable member's feedback, it might be better to eliminate the delay altogether and enable the THC when it reaches cut velocity or a short delay thereafter.

This kinda makes sense becasue the arc cannot be at the desired voltage for a given material until it actually reaches the cut velocity! Before then, it has to be too high due to the slower than desired velocity

EDIT: I think its possible we have blindly followed convention set by external THC's, not by what is right with a motion controller controlling the whole THC process.

nice, 23" capacitive touchscreen, 1920x1080

tiny suggestion(s) maybe consider increasing the size of the tabs at the bottom of the page + material selection and gcode preview (open)

I agree with tommylight regarding the LED sizes + voltage {and the voltage offset / override +/- buttons) {given thats the important info you need from across the room / quick glance and quick adjustment)

Just wondering if there is a way to make the elements a proportional percentage to allow for automatic scaling (??)

I'm "playing" with a copy of the screenset as I really like the clean / flat look of it for a lathe.

do you have an idea of what you want them to look like?