Operation
XPR300 Instruction Manual 809480 231
General recommendations for all processes
Always start with the default settings for the process that you want to use. In most cases,
you can expect the best results when you use the default settings that come with a
process ID.
If you decide that it is necessary to adjust a default setting, use offset or override commands
to make incremental changes to the original value (values), within limits. Refer to Process ID
offsets / overrides on page 226.
Do not allow the torch to touch the workpiece during cutting system operation. Contact with
the workpiece can damage the torch nozzle and shield. It can also damage the surface of
the workpiece.
Make sure that the torch is perpendicular (at a 90° angle) to the workpiece for
perpendicular-position processes.
Unsteady drive system and rail movement can make torch motion unsteady, which can
cause irregular cut patterns. Make sure to do routine service and maintenance to the drive
system and rails.
See the instruction manual that came with your cutting machine or table
for information on how to do this.
Do all cutting system maintenance tasks as scheduled. Refer to Maintenance on page 237.
Recommendations for perpendicular-position cutting processes
Always start with the default settings for piercing the thickness of the metal that you want to
cut.
Avoid firing the torch into the air.
It is acceptable to begin a cut at the edge of the workpiece.
Avoid lead-outs that move away from the workpiece and stretch the plasma arc.
Do the following steps to avoid the loss of a transferred plasma arc:
End every cut with the plasma arc still attached to the workpiece. Refer to Automatic
rampdown error protection on page 235.
Decrease the cutting speed when the end of the cut is near.
Stop the plasma arc before the part is completely cut (allow completion of the cut during
rampdown).
Program the path of the torch into the scrap area for rampdown.
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