B–63610EN/01
4. DESCRIPTION OF PARAMETERS
87
1784
Speed when overtravel alarm has generated during acceleration/deceleration
before interpolation (for look–ahead control)
[Data type] Word axis
[Unit of data]
[Valid data range]
Valid range
ncremen
sys
em
n
o
a
a
IS-A, IS-B IS-C
Millimeter machine 1 mm/min 6 to 15000 6 to 12000
Inch machine 0.1 inch/min 6 to 6000 6 to 4800
Rotation axis 1 deg/min 6 to 15000 6 to 12000
Deceleration is started beforehand to reach the feedrate set in the
parameter when an overtravel alarm is issued (when a limit is reached)
during linear acceleration/deceleration before interpolation. By using
this parameter, the overrun distance that occurs when an overtravel alarm
is output can be reduced.
NOTE
1 When 0 is set in this parameter, the control described above
is not exercised.
2 Use type–B linear acceleration/deceleration before
interpolation (by setting bit 0 (FWB) of parameter No.1602
to 1).
3 The control described above is applicable only to stored
stroke check 1.
1785
Parameter for determining an allowable acceleration when the feedrate is set by
acceleration
[Data type] Word–axis
[Unit of data] ms
[Valid data range] 0 to 32767
This parameter sets the time required to attain the maximum cutting
feedrate to determine the allowable acceleration when the feedrate is
determined by acceleration in AI look–ahead control mode.
The maximum cutting feedrate and the data set in this parameter are used
to determine the allowable acceleration. As the maximum cutting
feedrate parameter, parameter No.1432 (maximum cutting feedrate in AI
look–ahead control mode) is used.