Hypertherm HT4001 Plasma Arc Cutting System - Manual (Page 103)

OPERATION
5-12
HT4001
Instruction Manual
20. Set the initial height to OFF.
21. Angle the workpiece on the work table (with one end higher than the other) to check the auto height (torch
height control) mode. Position the torch at the highest point on the workpiece. Program a square cut pattern
into the controller. (See controller instruction manual.)
22. Set the auto height to ON.
23. Manually lower the torch to approximately .25 inches (6 mm) above the workpiece.
24. Start the arc transfer from the controller.
25. When the arc transfers and the machine delay time passes, the arc will pierce the workpiece and machine
motion will start. As the torch travels from a higher point to a lower point, verify that the torch stand-off distance
from the workpiece remains constant, and the DOWN indicator lights on the DR V/C module.
As the torch travels from a low point to a high point, verify that the torch stand-off distance from the workpiece
remains constant, and the UP indicator lights on the DR V/C module.
As the torch makes a corner cut, the machine motion speed should remain constant. The UP and DOWN
indicators will not light while cornering. Machine motion and plasma arc will automatically stop when the cut is
complete.
The system is now operational. Proceed to Daily Startup.
If the system does not function as outlined in this procedure, recheck the pre-installation requirements and
installation directions in this manual. If all pre-installation and installation directives have been followed and you are
still experiencing difficulty with the system, feel free to call Hypertherm's Field Service group at 1-800-643-9878.