Plasma no ARC OK and torch fires when machine is turned on

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13 Jul 2020 05:06 #174454 by luftlupus
Hey everyone i am having an issue with my plasma cutter, i finished wiring and hooked it all up, now when i turn the plasma's power on the torch instantly fires by itself. Also i have no ARC OK light on the interface in plasmac. any advice would be appreciated.

THC also looks to be reading voltage so that's a bonus. the config folder is attached below if needed


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File Name: plas.zip
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13 Jul 2020 05:13 #174455 by phillc54
For the torch try reversing the wires to SPINDLE ENA- and SPINDLE ENA+

Are you getting a Transfer light on your machine?

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13 Jul 2020 05:33 #174456 by luftlupus
i swapped the spindle ena -/+ and same thing also there it no transfer indicator on the machine itself.
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13 Jul 2020 05:39 #174457 by phillc54
Maybe they output a voltage...

Disconnect the SPINDLE ENA- and SPINDLE ENA- and measure with a meter to see if the output a voltage when they get a torch on signal.

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13 Jul 2020 05:48 #174459 by luftlupus
is it normal for the torch to still fire without the cnc port connected aswell? would the ARC OK not lighting up on the interface have anything to do with it?

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13 Jul 2020 05:51 #174460 by phillc54

is it normal for the torch to still fire without the cnc port connected aswell?

No, I wouldn't think so. Is it a hand torch with the trigger stuck on?


would the ARC OK not lighting up on the interface have anything to do with it?

You won't get an Arc OK until you have got a proper cutting arc, so you would need the torch to be at pierce height above some material.

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13 Jul 2020 06:01 #174462 by luftlupus
No its a full machine torch no trigger





That's good to know.

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13 Jul 2020 06:05 #174463 by phillc54

No its a full machine torch no trigger


Without a connection to 3 & 4 on the CNC port it shouldn't try to activate the torch.

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13 Jul 2020 06:07 #174464 by luftlupus
thats concerning, so maybe a machine issue?

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13 Jul 2020 06:08 #174465 by phillc54

thats concerning, so maybe a machine issue?

Kinda looks like it. :(
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