
B–64113EN–1/01
7. FEEDRATE CONTROL/ACCELERATION
AND DECELERATION CONTROL
455
NOTE
When parameter No. 1621 (time constant T2 used for
bell–shaped acceleration/deceleration in rapid traverse) is
set to 0, linear acceleration/deceleration is applied in rapid
traverse even. In this case, this parameter stands for a time
constant used in linear acceleration/deceleration in rapid
traverse.
1622
Time constant of exponential acceleration/deceleration or linear acceleration/
deceleration after interpolation, in cutting feed for each axis
[Data type] Word axis
[Unit of data] ms
[Valid data range] 0 to 4000 (For exponential acceleration / deceleration)
0 to 512 (For linear acceleration / deceleration after interpolation)
Set the time constant used for exponential acceleration/deceleration or
linear acceleration/deceleration after interpolation in cutting feed for each
axis. Except for special applications, the same time constant must be set
for all axes in this parameter. If the time constants set for the axes differ
from each other, proper straight lines and arcs cannot be obtained.
1623 FL rate of exponential acceleration/deceleration in cutting feed for each axis
[Data type] Word axis
Valid data range
y
IS-A, IS-B IS-C
Millimeter machine 1 mm/min 0, 6 – 15000 0, 6 – 12000
Inch machine 0.1 inch/min 0, 6 – 6000 0, 6 – 4800
Rotaion axis 1 deg/min 0, 6 – 15000 0, 6 – 12000
Set the lower limit (FL rate) of exponential acceleration/deceleration in
cutting feed for each axis. Except for special applications, this parameter
must be set to 0 for all axes. If a value other than 0 is specified, proper
straight lines and arcs cannot be obtained.
1624
Time constant of exponential acceleration/deceleration or linear acceleration/
deceleration after interpolation, in jog feed for each axis.
[Data type] Word axis
[Unit of data] ms
[Valid data range] 0 to 4000 (For exponential acceleration / deceleration)
0 to 512 (For linear acceleration / deceleration after interpolation)
Set the time constant used for exponential acceleration/deceleration or
linear acceleration/deceleration after interpolation in jog feed for each
axis.
The type of acceleration/deceleration is determined depending on the
setting in parameter No. 1610.
[Unit of data]
[Valid data range]