plasma control panel

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7 years 5 months ago #134790 by rodw
Replied by rodw on topic plasma control panel
Geez, the things I do for you. I had to dig out the manual.

Where you have ArcOK Common going to TB-1, it should be going to Field Power as the input needs to see 24 Volts.

Also I went back through the emails from my Mate Chris and we settled on a 1k 1 W resistor which would draw 24 mA as a cleaning current. 220 Ohms would require a 3 Watt resistor or it would burn out.

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7 years 5 months ago #134793 by thefabricator03
Replied by thefabricator03 on topic plasma control panel
Thanks Rod,

I have already brought a resistor as per Johns recommendation I brought a 220 ohm 5 Watt wire wound resistor,

I take it that since it is greater than 3 Watt it should be fine to use.

I really appreciate the help from everyone here, I should have my cabinet wired up this weekend and hopefully have the machine up and running next week.

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7 years 5 months ago - 7 years 5 months ago #134794 by rodw
Replied by rodw on topic plasma control panel

thefabricator03 wrote: Thanks Rod,

I have already brought a resistor as per Johns recommendation I brought a 220 ohm 5 Watt wire wound resistor,

I take it that since it is greater than 3 Watt it should be fine to use.

I really appreciate the help from everyone here, I should have my cabinet wired up this weekend and hopefully have the machine up and running next week.


Stefan, that will be fine and result in 100 mA of cleaning current which is what was the minimum current draw of the relay Everlast used.
This is what my resident expert suggested

Rod, I forgot to calculate the power dissipation across the resistor. Unless you have a 3 Watt resistor, it will burnout.
It would be better to use 1000 ohm, giving a cleaning current of 24mA (if the resistor is rated at 1 Watt)
or, if you want the contact current to be around 50mA, 2 x 1000ohm 1 Watt resistors in parallel.
It is important to use resistors that can dissipate the power dropped across them.
A 220 ohm 5 Watt resistor would be OK. (giving a current of around 100mA


I have to say we are expecting great things of thefabricator in '19!
Really looking forward to seeing your machine cutting and your feedback about plasmac as it really just you and John who cut stuff commercially on a daily basis.
Last edit: 7 years 5 months ago by rodw.
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7 years 5 months ago #134801 by thefabricator03
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I think it is just great that the same technology that controls small machines like Phils 600x600 machine, Can also control large industrial machines as well.

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7 years 5 months ago - 7 years 5 months ago #134804 by rodw
Replied by rodw on topic plasma control panel
Yes and we forget that all of us are just playing with plasma when its considered I've got two suppliers, one has a plasma table about 25 metres log and the other also does a bit of flame cutting and his multi gantry table is 90 metres long! Just think about it, that almost lets him cut out a hull for a battleship!
Last edit: 7 years 5 months ago by rodw.
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7 years 5 months ago #134863 by tommylight
Replied by tommylight on topic plasma control panel
Smallest 35x25cm, largest an Elumatec SBZ 130/01 at 6450mm or 6,45 meters weighing in at just over 5 tons.
Next in line a 6x2 meter to be built plasma and acetylene machine, and a retrofit of an industrial Hypertherm 12x3 meters 400Amp monster that must have at least a ton of cables ( guesstimate). Talk about versatility!
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