Low budget plasma setup, what do I need?

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11 Jun 2019 18:42 #136633 by tecno
Is this a good candidate for my parport plasma?

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11 Jun 2019 18:54 - 11 Jun 2019 18:54 #136635 by PCW
That's probably OK

I would test without the base thread since you will not be using a base thread with a 7I90:

latency-histogram --nobase --sbinsize 500
Last edit: 11 Jun 2019 18:54 by PCW.
The following user(s) said Thank You: tecno

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11 Jun 2019 19:14 #136640 by tecno
Will do tomorrow

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12 Jun 2019 08:58 #136705 by tecno
Here the result as requested.

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14 Jun 2019 11:19 #136872 by tecno
Is everything needed on the schematics and hopefully correctly connected?



7i90HD + 7i42TA as BoB + 7i37T as I/O + THCAD300

3x Gecko 251

Cheers
Bengt

ps on Tuesday I will receive my TIG/Plasma
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14 Jun 2019 15:46 #136889 by pl7i92
36V is quite low as for the cable length of a plasma
use double shilded cable and make the shield to the mashine

i got on 2500x1500mm table 70V

it will work fine

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14 Jun 2019 16:06 #136893 by tecno
Well max is 50VDC to the drivers and with a bit safety 36VDC PSU is a standard.

It will have to do.

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14 Jun 2019 20:26 #136907 by rodw
I think 36v for plasma you will be OK as there is not much torque required, but you are leaving power and torque on the table which will limit velocity and acceleration which is important for plasma.. On my rotary table I had problems with 24 volts with the same drivers that went away when I moved to 48v power supplies. That is what Gecko in .AU recommend. I think Gecko said if you double voltage, you quadruple torque.

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14 Jun 2019 20:40 #136909 by tecno
48VDC is way too close to the 50VDC driver max voltage.

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15 Jun 2019 01:29 #136937 by tommylight
36V is plenty, no worries there.
Anyway, pushing geckos at 50V is asking for trouble, back EMF could send them to heaven easily.
All the small ones I make use 24V, some only 19V from laptop power bricks.

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