FANUC Series 16/18/160/180-Model C for Lathe Operator Manual

B–62754EN/01
6. SAFETY FUNCTIONS
OPERATION
533
When the tool tries to move beyond the stroke end set by the machine tool
limit switch, the tool decelerates and stops because of working the limit
switch and an OVER TRAVEL is displayed.
Y
X
Deceleration and stop
Stroke end
Limit switch
Fig. 6.2 Overtravel
When the tool touches a limit switch along an axis during automatic
operation, the tool is decelerated and stopped along all axes and an
overtravel alarm is displayed.
In manual operation, the tool is decelerated and stopped only along the
axis for which the tool has touched a limit switch. The tool still moves
along the other axes.
Press the reset button to reset the alarm after moving the tool to the safety
direction by manual operation. For details on operation, refer to the
operators manual of the machine tool builder.
No. Message Description
506 Overtravel: +n
The tool has exceeded the hardware–spe-
cified overtravel limit along the positive nth
axis (n: 1 to 8).
507 Overtravel: –n
The tool has exceeded the hardware–spe-
cified 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
D Alarm

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