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Simadre ct520dx wiring schematic

I have a plasma cutter that just stopped working.has HF arc in tig and plasma but nothing else. I pulled out all the boards to check for burned areas,thought i had all the wire connectors marked down on paper the right way but guess i might not have.Looking for the connector schematic to hook up right.Anyone out there got any idea where i can get it? Thanks

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6 Suggested Answers

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Posted on Jan 02, 2017

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SOURCE: lotos 520d plasma part not working, arc works great

Be sure you have the ground is connected to the postive terminal on the bottom of the front of the machine. Air pressure should be 70psi as the air flows out of the torch.

Posted on Oct 18, 2009

  • 5603 Answers

SOURCE: Just purchased this and need to know what the blue

If those are the power input, then the green is the grounding wire (safety ground).

If the unit is 220/240 volt, then the blue AND brown are the hot wires.
Neutral would not be used in this case.

If the unit is 120 volt, then the blue is the hot and the brown is the neutral, but your unit probably requires the 240 volt. Check the owners manual and label on the unit.

Posted on Nov 09, 2009

  • 313 Answers

SOURCE: spectrum 2050 plasma cutter .

Check compressed air pressure is in limits otherwise unit will cut out. Try adjusting the pressure up. also make sure the supply pressure is correct as it may not be your plasma cutter at fault.

Posted on Aug 02, 2010

  • 905 Answers

SOURCE: I just bought a Simadre520dx

They probably suspect board damage in the gas control / air control. They will analyze the pictures, looking or signs of failure. If found, they will either send you a new unit, or replacement boards to be installed. This is very common troubleshooting / diagnostic when the manufacturer gives its support staff the training and latitude to go this deep.

Give it more time, you are easily within the warranty period. Keep track of all communications though. Given that you just bought the machine, I am surprised that they were not more apt to replace it altogether unless another is not available.

Posted on Oct 12, 2010

  • 17 Answers

SOURCE: I have a rstar ct-520 cutter/tig/arc welder. I am not getting any air through the cutting head on the plasma cutter. Does anyone have any idea of what it could be.

check first the pilot arc, if air pressure is there or check solanoid valve working or not

Posted on Apr 21, 2012

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I have a simadre cut50D an I don't have the ground cable can I still use it?

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Its probably the torch. Turn off the hf , with the machine triggered Measure the open circuit voltage from the positive o/p socket to the negative with a multimeter set on d.c . The correct no load output voltage for the machine will be shown on the spec plate as Uo = ........and whatever the voltage is. If you get the correct voltage try another torch or try stick welding.

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No High frequency on plasma cutter

You are from Austrialia yes? If you'll email me at I am sure we can get you going. I know we have chatted before but let get chatting again and have you up and running.

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