Background

Cut height is set via the AUTO F/S settings, or manually with M210 torch height control voltage and M208 set cut height command. Follow the steps below for troubleshooting regarding the torch cutting too high.

Table of Contents

Check Auto F/S settings

Reason: M210 torch height control voltage set too high

If using M200 Auto F/S, ensure that you have selected the correct material and consumables on the Main tab of PathPilot.

If you are manually specifying voltage using the M210 M-Code, verify that the P value in your G-Code is appropriate for the feed rate, cut current, and consumables you are using according to the manufacturer’s cut charts.

THC target voltage is set automatically when you select a material on the Main tab in PathPilot and use the M200 Auto F/S function in your G-Code.

Check consumable selection

Reason: Incorrect consumables being used

If you have both FineCut and standard consumables, verify that the correct nozzle is installed for the cut settings you have selected.

Standard consumables can require a THC voltage setting of up to 50V higher than FineCut consumables for the same cut current. Mixing up the two can produce a cut height error of more than 1” (25mm).

Check grounding clamp

Reason: Bad workpiece clamp connection

Make sure that the workpiece clamp is securely fastened to your material and plugged in to the plasma source.

If you have your workpiece clamp cable routed through any terminal blocks, make sure that all connections are firmly tightened down.

A bad workpiece clamp connection can produce an additional voltage drop that will cause higher than usual THC voltage values. This will effect the cutting height.

Check plasma source settings

Reason: Plasma source amperage set too high

If you are using the Auto F/S material picker, make sure that you have your plasma source cut current set to match the value suggested on the Main tab in PathPilot.

If you are using the Hypertherm control to allow PathPilot to control cut current and air pressure, verify that the adapter is connected to the controller’s USB port and the RS485 cable is plugged in to the back of the plasma source.

If you continue to have issues, contact Tormach Technical Support.