Valid Arc Lost 2

tommylight wrote: Last one i bought new was made in Italy and could do 420 Liters a minute at 11 Bar, so that was enough for two plasma cutters running all day long, but a 420L/m at 8 Bar can not keep two plasmas running all day.

I think the US quotes displacement which is very misleading. Here in AU (and probably also in EU), they must by law quote free air delivery (FAD) in accordance with the Australian standard. This is much lower so 320 litre per minute FAD will do the job for a decent sized plasma table (what I have) but lacks the headroom so will cycle a lot so it will be hotter and have more water in the air so for industry a 420 LPM FAD is a better option which is getting up into 3 phase power.

I'm pretty sure the issue is the low current ArcOK in this case.

I started a new topic about selecting a compressor for plasma cutting under the PlasmaC section of the forum:
forum.linuxcnc.org/plasmac/39991-choosin...r-for-plasma-cutting
Please feel free to add more info.

Had a busy morning and finally got around to jaycar.

Turns out they dont have 5W resistors in ceramic, only wire bound, will this do?

I grabbed 270 Ohm 1W ceramic resistors as well just in case but unsure if these will suffice.

Will the 3x 270 Ohm 5W wire bound resistors be fine? I assume they do the exact same job as ceramic resistors, just in a bigger footprint.

They will do just fine.

little_sparky wrote: Will the 3x 270 Ohm 5W wire bound resistors be fine? I assume they do the exact same job as ceramic resistors, just in a bigger footprint.

Yes use these ones to handle the current.

Phew, finally at 11:13 at night I have time to upload the ini and hal files, sorry it took ages.

I still havnt had time to wire in the new resistors to test if they work but here are the files to check them out.

My only concern is any debounce or lowpass filters I have missed.

Thanks for the help thus far.

hal



ini



connections.hal