From Scratch

tommylight
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23 Apr 2019 14:22 #131638 by tommylight

Replied by tommylight on topic From Scratch

There are some industrial plasma cutters that use 5i25 or 6i25 with a 7i77 i retrofitted. It will work with 7i76 also.
Keep in mind, shielding on signal and motor cables is connected only on one side, not both, the side nearest to sensitive electronics.

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Firat
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23 Apr 2019 14:24 #131639 by Firat

Replied by Firat on topic From Scratch

So 7i76e is enough to run a plasma ?

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pl7i92
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23 Apr 2019 14:42 #131643 by pl7i92

Replied by pl7i92 on topic From Scratch

you can run it on a 7i96 with full sucess
also on a simple 7i92 Mach3BOB

all will find your best

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Firat
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23 Apr 2019 14:54 #131650 by Firat

Replied by Firat on topic From Scratch

Friends I have already bought a 7i76e. I just ask if I need any other hardware beside it.

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rodw
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23 Apr 2019 15:22 #131654 by rodw

Replied by rodw on topic From Scratch

Grab the Mesa THCAD board to read the voltage into LinuxCNC and you should be good to go. There are 2 versions. ONe for raw voltage 300 volt range and another THCAD-10 where you use some external resistors so you can scale to suit your needs. I have the THCAD-10 on a machine with a 30:1 voltage divider and also added some resistors as per the docs to run at raw arc voltaage which was presented on the CNC interface.

The Plasmac config is the way forward for sure. see the thread "Another Plasma Component"

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Firat
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23 Apr 2019 15:24 #131656 by Firat

Replied by Firat on topic From Scratch

Thank you very much rodw. I already bought THCAD-10 and 7i76e together. I would need your help prior to installation I guess.

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tommylight
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24 Apr 2019 02:23 #131732 by tommylight

Replied by tommylight on topic From Scratch

Rod and/or Norbert have posted very nice schematics for that exact wiring, just do a search for it.

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