
B-63944EN-2/02 SAFETY PRECAUTIONS
s-7
WARNING
5 Constant surface speed control
When an axis subject to constant surface speed
control approaches the origin of the workpiece
coordinate system, the spindle speed may become
excessively high. Therefore, it is necessary to
specify a maximum allowable speed. Specifying
the maximum allowable speed incorrectly may
damage the tool, the machine itself, the workpiece,
or cause injury to the user.
6 Stroke check
After switching on the power, perform a manual
reference position return as required. Stroke check
is not possible before manual reference position
return is performed. Note that when stroke check is
disabled, an alarm is not issued even if a stroke
limit is exceeded, possibly damaging the tool, the
machine itself, the workpiece, or causing injury to
the user.
7 Tool post interference check
A tool post interference check is performed based
on the tool data specified during automatic
operation. If the tool specification does not match
the tool actually being used, the interference check
cannot be made correctly, possibly damaging the
tool or the machine itself, or causing injury to the
user. After switching on the power, or after
selecting a tool post manually, always start
automatic operation and specify the tool number of
the tool to be used.
8 Absolute/incremental mode
If a program created with absolute values is run in
incremental mode, or vice versa, the machine may
behave unexpectedly.
9 Plane selection
If an incorrect plane is specified for circular
interpolation, helical interpolation, or a canned
cycle, the machine may behave unexpectedly.
Refer to the descriptions of the respective
functions for details.
10 Torque limit skip
Before attempting a torque limit skip, apply the
torque limit. If a torque limit skip is specified
without the torque limit actually being applied, a
move command will be executed without
performing a skip.