Calibrate Initial Height Sensing
Set Ohmic Probing Sensitivity
The ohmic probing system on the 1300PL relies on a calibrated resistance value between the torch cap and the workpiece. If you do not calibrate your ohmic probe, you may find that it is triggered by water on the work piece or inside the torch cap.
Open the electrical cabinet and identify the Tormach THCT Board (PN 39096).
Select a piece of sheet metal to use as a test workpiece. Connect it to the ground clamp.
Jog the torch downwards in Z until the torch cap contacts the workpiece. Watch LED D8 on the bottom left of the board. If the LED lights up when the workpiece contacts the torch cap, the THCT board is measuring contact between the cap and ground as intended.
If the LED did not light up, identify adjustment screw RV1 on the THCT board (indicated by the arrow in the image above). Increase the sensitivity by rotating the screw clockwise, 1/16th turn at a time until the workpiece is detected.
Splash a small puddle of water onto your workpiece. Jog the torch cap down until it is contacting the water but not the workpiece itself. If the LED is on, your THCT sensitivity is too high. Decrease the sensitivity 1/16th of a turn at a time until the LED goes out.
If you have trouble adjusting the ohmic probing system or the LED never comes on, go to "Ohmic Probing" in the Troubleshooting section.
Set Physical Touch Switch Trigger Depth
The torch lifter head on the 1300PL contains a spring-loaded switch to serve as a backup for ohmic probing or to be used when ohmic probing is inconvenient. The spring compresses a certain distance in Z before triggering. This distance must be measured and input on the Settings tab in PathPilot.
Use the procedure in "Plasma Settings Reference" to measure and set the trigger depth.
Looking for more information?
This is a section of the 1300PL operator's manual. To view the whole manual, go to Tormach document UM10720.
If you have additional questions, we can help. Create a support ticket with Tormach Technical Support at tormach.com/how-to-submit-a-support-ticket for guidance on how to proceed.