
B–63683EN/01
8. SAFETY ZONE CHECK
143
CAUTION
1 Use bit 2 (ZI0) of parameter No. 16502 to switch between
the detection methods.
2 The position of a workpiece holder on the Y–axis cannot be
detected automatically.
3 To enable the execution of safety zone position detection,
set a detection start position such that the distance between
the detection start position and the first end of the workpiece
holder is sufficient for the feedrate to stabilize.
4 If reset is performed during safety zone position detection,
repeat the operation from reference position return along
the X–axis.
5 The purpose of automatic detection is to automatically
calculate the central position of a workpiece holder from the
signal transitions. Accordingly, set workpiece holder width
data in parameter Nos. 16540 to 16543 so that safety zones
can be set correctly.
6 If the number of safety zones to be set does not match the
detector signal transition count, during automatic safety
zone setting, alarm 4871 is issued.
7 When the detector signal makes a transition when position
deviation along the X–axis during movement for automatic
safety zone setting exceeds the allowable range of values
set in the parameters (Nos. 16538 and 16539), alarm 4870
is issued.