Switch your multi-meter to measure voltage in the 5V range. Press the blinking Reset button in Mach3 and the board LED should go from blinking to solid to indicate that it is connected.ī.)ğor the next steps you will need to have access to a multi-meter for checking continuity and voltage. You should see an LED (either red or green) on the Langmuir Systems electronics board and it should be blinking when USB is plugged into the computer. Plug the USB cable into the enclosure and open Mach3.

If your torch is still not firing, proceed to step 3.Ī.) With all cables unplugged from the electronics enclosure, remove the front panel by unscrewing the 10 sheet metal screws from the top and bottom of the front panel. If torch wiring was done correctly, this will cause the plasma cutter to fire when the connection is jumped across the barrel connector. To do this, we recommend using a paperclip and placing on end inside the barrel connector and touching the other end to the outside of the barrel connector.

We are going to simulate the relay firing the plasma torch by jumping the two leads on the barrel connector. Make sure your torch is in the torch mount and is over air between two slats and turn your plasma cutter on. Unplug the black barrel connector for torch firing from the electronics enclosure. If your torch is still not firing, proceed to step 2.Ī.) We are going to check that splicing into the plasma cutter wiring was done correctly. If your torch fires and the pilot arc goes out, be sure to press ‘Torch On/OFF F5’ again so that the light stops blinking and the plasma cutter stops flowing air. You should also see the ‘Torch On/OFF F5’ button blinking yellow. Click this button once and you should see your torch pilot arc come on. In Mach3 there is a button ‘Torch On/OFF F5’ which is a toggle button to manually fire the torch. Be sure that nothing is below the torch and you are over air between two slats. D.) If your settings are correct, turn your plasma cutter on and place the torch into the CrossFire torch mount.

Mach3 ports and pins