
B–63522EN/02
31. SAFETY FUNCTIONS
NC FUNCTION
419
When the movable section has gone beyond the stroke end, a signal is
output, the axis decelerates to a stop, and overtravel alarm is displayed.
All directions on all axes has overtravel signals.
The movable section of the machine is parameter set in machine
coordinates value. If the machine moves beyond the preset range, it
decelerates to a stop and alarm is displayed. (This function is valid after
manual reference point return at power on.)
This function can be used instead of hardware overtravel limit switch.
When both is equipped with, both are valid.
Unlike overtravel detection, stored stroke check 1 checks whether the
distance between the current position and that at which the tool will be
stopped after deceleration exceeds the limit.
D For manual operation, parameter setting can be made to stop tool
movement along an axis when the tool is on a boundary with the
inhibition area and generate an alarm.
D For manual operation, parameter setting can be made to output just a
stroke limit arrival signal without generating any alarm when the tool
enters the inhibition area. (Movement along an axis is stopped.)
(X
1
, Y
1
, Z
1
, ...)
(X
2
, Y
2
, Z
2
, ...)
The shaded part is
the inhibition area.
After an OT alarm is generated, moving the tool along the axis to the
movable range can release the OT alarm without reset operation. Whether
to enable automatic release is specified by parameter setting.
31.2
OVERTRAVEL
FUNCTIONS
31.2.1
Overtravel
31.2.2
Stored Stroke Check 1
D Automatic alarm release