B–63090EN/02
4. DESCRIPTION OF PARAMETERS
85
1783
Allowable speed difference for the speed difference based corner deceleration
function (for look–ahead control)
[Data type] Word axis
[Unit of data, valid 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 0.1 deg/min 6 to 15000 6 to 12000
A separate allowable feedrate difference can be set for each axis. The
allowable feedrate difference is set for each axis with this parameter.
Among the axes that exeed the specified allowable feedrate difference, the
axis with the greatest ratio of the actual feedrate difference to the
allowable feedrate difference is used as the reference to calculate the
reduced feedrate at the corner.
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
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.