This is the main screen on the THC remote. The image shows the THC in it's OFF state. While the machine is cutting, actual arc voltage will be displayed beside Tip Volts. Set volts can be changes by using the arrow buttons while in MANUAL mode.

Pressing F1 will return to this screen from any other screen.

This image shows the THC in it's ON state in AUTO mode. In AUTO mode the THC takes a voltage sample after the torch lights and automatically sets Set Volts to that voltage. Throughout the cut, the THC will maintain the height at which the voltage sample was taken. Automatic THC operation relies on the pierce height being calibrated properly. If you suspect your pierce height s not correct, calibrate it first. In AUTO mode, the THC will not activate until 2 seconds after the torch fires. This delay is so the torch voltage has time to stabilize before taking a height sample.

In AUTO mode there is no need for you to adjust Set Volts. If you find that the height is not correct for any reason, you can turn off AUTO and manually adjust Set Volts.

This image shows the THC in MANUAL mode. In MANUAL mode the operator must set the arc voltage using the arrow buttons. The correct voltage for what you are cutting can be found in the Plasma manual cut charts. In manual mode the THC does not take a voltage sample, it simply cuts at the voltage entered. For this reason, there is no delay when the THC starts.

Pierce height is also not as much of a factor. The torch will go to the height corresponding to the arc voltage entered in Set Volts regardless of the pierce height or initial cut height. This is very handy for cutting light material that tends to flex when sensing top of material.

HINT: To establish correct Set Volts without looking up the numbers, start a cut in AUTO mode. Set Volts will be set automatically. After the machine starts cutting, turn AUTO off and go to manual mode. From that point on, the THC will always cut at that height regardless of whether the pierce height was accurate or not.

This is the Settings screen. Press F2 to get to this screen. This screen allows you to adjust the sensitivity of anti-dive and Z motion.

Anti-dive is a feature that prevents the torch from diving into a hole by locking out Z motion when excessive voltage is detected. When the torch passes an open area, the torch voltage increases sharply. The anti-dive setting allows you to set the voltage that anti-dive activates. This is a percentage. If the tip volts are 120V and anti-dive is set to 8, the Z will lock out when a voltage of 129.6V.

The lower you set ainti-dive, the more sensitive it will be. For instance, a setting of 12 will allow the torch to drop into a hole about 1/4" but will be less likely to activate inadvertently on rapidly warping material. A setting of 6 would prevent any drop in height over a hole but may cause anti-dive to activate inadvertently if the material warps rapidly.

Sensitivity adjust how responsive the THC will be to changes in material height. The THC is most stable at a setting of 1 and least stable at a setting of 6. A setting of 3 seems to be a good average. If you need to track rapid changes in height, such as corrugated metal, set the sensitivity to 5 or 6. For normal flat plate, 2-3 is fine. For corrugated material, anti-dive should also be turned up to 12 or turned off on the main screen.

This screen allows you to adjust the Z height manually while in MANUAL mode only. Press F3 to get to this screen. This is how you adjust cut height when using an Oxy/Fuel torch.