Hypertherm Phoenix 8.0 - Manual (Page 423)

Sensor THC
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Nozzle Contact During Cut
Select On to require the Sensor THC to use the contact sense input to detect the plate
contact during cut and pause operations.
Offset IHS
Activates a remote probe for plate detection and initial height sense. If this feature is
enabled, the control system executes the Tool Offset 9 or Marker Offset 9. The plasma
torch moves the distance of the offset, performs the IHS and then returns the torch to the
pierce location at each commanded pierce or cut on. The Z axis parameter is used to
adjust for height differences between the torch and the probe.
Auto Kerf Detect
Reduces the possibility of the torch diving into the plate. When Yes is selected, the THC
detects sudden changes in arc voltage when crossing a kerf path and freezes the height
motion of the THC.
Auto Kerf Voltage Change
Sets the change in voltage that disables the THC when the torch passes over a previous
cut. This setting prevents the torch from diving and requires that the Auto Voltage Lock
On parameter be active.
Kerf Detect Reacquire Time
Determines the amount of time after a change in voltage is detected that the CNC
disables THC height motion.