Mesa 7i76/THCAD 10 wiring

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08 Jun 2020 07:36 #170590 by luftlupus
Hi i am hopefully getting towards the end of my plasma table build. But i have a question on the wiring of the mesa THCAD and the 7i76 board i have this picture of what i was hopefully able to figure out correctly but just want anyone with experience to verify this is correct before i fry something. Thanks

Also i have another question, how do you guys with plasma's have the torch know when its hitting metal before a start arc to set the height? is there some kind of feedback i can get a hold of from the torch end? or is there an easier way to do this? cheers again.
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08 Jun 2020 08:16 #170592 by Clive S
Replied by Clive S on topic Mesa 7i76/THCAD 10 wiring
Have you read the PlasmaC docs linuxcnc.org/docs/2.8/html/plasma/plasma...e.html#_introduction

You generally using a floating head that the torch is mounted on and that triggers a switch. You can also use ohmic probing with the floating head
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08 Jun 2020 09:53 #170608 by luftlupus
Replied by luftlupus on topic Mesa 7i76/THCAD 10 wiring
thanks ill guess ill look into making a floating head.

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08 Jun 2020 10:35 #170616 by Clive S
Replied by Clive S on topic Mesa 7i76/THCAD 10 wiring

luftlupus wrote: thanks ill guess ill look into making a floating head.


Plus a break away so the torch Will not get damaged

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06 Nov 2020 20:20 #188538 by bevins
Replied by bevins on topic Mesa 7i76/THCAD 10 wiring
I thought the floating head was to protect the torch going down. You can use it as a start switch instead of the ohmic probe?

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09 Nov 2020 03:49 #188716 by luftlupus
Replied by luftlupus on topic Mesa 7i76/THCAD 10 wiring
You sure can. i have been using the floating head without any issues by itself. i don't have an ohmic installed.
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