choice of controller for a plasma build

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03 Feb 2022 21:00 #233911 by carlos515
I am looking to switch from Mach4 to Linuxcnc for my plasma build. I was looking at the 7i92 with a 7i85s. I have a promo 150 thc. Would these cards work together with the 4 stepper drivers DM542 ? I have a 3 motor 1 slave setup.
I am just starting to learn abouth linux , so this is a big jump for me.
Thanks,
Carlos

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03 Feb 2022 22:43 #233920 by rodw
Have a look at
7i92 and 7i76
7i76e which does above with one card
or 7i96

Your Proma will work with QTplasmac but for USD $69 you might like to also look at THCAD-10 when ordering your Mesa cards.
Even the Proma Diehards (like Tommylight) have long since converted to the THCAD .... Then Linuxcnc is the THC.
 

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03 Feb 2022 23:16 #233926 by carlos515
Thanks, The 7i76e is all out of stock and they are having a hard time getting parts.That is why i am looking at alternatives.
I was also wondering about my ohmic set up. Would I be able to use my Robot3T ohmic sensor with the THCAD and Linuxcnc?

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03 Feb 2022 23:36 #233927 by PCW
A 7I76+7I92M is a pretty close substitute for a 7I76E
The following user(s) said Thank You: carlos515

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05 Feb 2022 08:10 #234014 by carlos515
I lucked in and ended up with a 7i76e......Now the I have an Everlast 82i . If I interpret the specs , 80A/112v would this work out to 2.24v at 1/50 and 7v at 1/16 divider?
Would I be able to use a 0-5v board on the 1/16 divider setting?

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05 Feb 2022 11:01 - 05 Feb 2022 11:02 #234017 by rodw

I lucked in and ended up with a 7i76e......Now the I have an Everlast 82i . If I interpret the specs , 80A/112v would this work out to 2.24v at 1/50 and 7v at 1/16 divider?
Would I be able to use a 0-5v board on the 1/16 divider setting?

From my experience with the everlast 50i, the resistors in the voltage divider get counted as belonging to the thcad so 16:1 is actually 24:1. This gives you 240 v  full scale on a THCAD-10 which is so close to perfect.

For more info, refer to this thread I raised on plasma spider
plasmaspider.com/viewtopic.php?f=111&t=23700
Last edit: 05 Feb 2022 11:02 by rodw.
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05 Feb 2022 16:01 #234029 by carlos515
Thank You

Carlos

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05 Feb 2022 20:00 #234048 by rodw
Iforgot to mention the Everlast cnc connector is made by Weipu. Try one of these.
www.aliexpress.com/item/32702181628.html

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05 Feb 2022 20:38 #234052 by carlos515
Thanks, I have one already......I just ordered a THCAD-10. Had to order it from Germany. The shortage of electronics is getting scarry .

Carlos

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