
OPERATION
B–63664EN/02
6. SAFETY FUNCTIONS
541
When the beam tries to move beyond the stroke end set by the machine
tool limit switch, the nozzle decelerates and stops because of working the
limit switch and an OVER TRAVEL is displayed.
Deceleration
and stop
Stroke
end
Limit
switch
Y
X
Fig.6.2 Overtravel
When the nozzle touches a limit switch along an axis during automatic
operation, the nozzle is decelerated and stopped along all axes and an
overtravel alarm is displayed.
In manual operation, the nozzle is decelerated and stopped only along the
axis for which the nozzle has touched a limit switch. The nozzle still
moves along the other axes.
Press the reset button to reset the alarm after moving the nozzle to the
safety direction by manual operation. For details on operation, refer to
the operator’s manual of the machine tool builder.
Alarm
No.
Message Description
506 Overtravel: +n
The nozzle has exceeded the hardware–speci-
fied overtravel limit along the positive nth axis
(n: 1 to 8).
507 Overtravel: –n
The nozzle has exceeded the hardware–speci-
fied overtravel limit along the negative nth axis
(n: 1 to 8).
6.2
OVERTRAVEL
Explanation
D Overtravel during
automatic operation
D Overtravel during
manual operation
D Releasing overtravel
Alarm