Hypertherm XPR170, Instruction Manual

Page: 233 / 438

Operation
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XPR300 Instruction Manual 809480 233
Hypertherm’s pierce control and assist technology can minimize timing and torch height issues that
can have a negative effect on piercing processes.
* Also known as “pierce complete.”
Recommendations for marking processes

Alternate between marking and cutting processes. Marking without intermittent cutting can
shorten the life of consumables.
Recommendations for bevel-cutting processes

When possible, pierce with the torch perpendicular to the workpiece and then tilt the torch.

Limit tilt rotation speed if necessary.

Maintain 2 mm – 3 mm (0.08 inch – 0.12 inch) of clearance between the torch and the
workpiece.

Use the effective thickness of the workpiece you are cutting to select cut speed.

With True Bevel™ technology, Hypertherm provides you with flexible and
adjustable bevel compensation cut charts, or process parameter tables,
that automatically compensate key settings such as torch height and cut
speed.
Pierce control* and assist technology
Pierce delay settings • The operator selects the time (in seconds) necessary to pierce through
the full thickness of the metal.
• The operator enters this setting from the CNC or XPR web interface.
• For recommendations on how to choose the best pierce-delay setting,
see the cut charts. the XPR Cut Charts Instruction Manual (809830).
Shield pierce gas signal • This signal enables the shield pierce flow function.
• This signal must be activated with the Plasma Start command. Refer to
Wait for start State (5) on page 210. For information about commands
and signals, refer to the CNC Communication Protocol for the XPR
Cutting System (809810).
Shield pierce flow setting • The shield pierce gas setting is used during pierce operation.
• The shield pierce gas setting is active until pierce delay expires.
• The shield pierce gas setting can be offset or overridden.