
B–64113EN–1/01
7. FEEDRATE CONTROL/ACCELERATION
AND DECELERATION CONTROL
465
The bell–shaped acceleration/deceleration after cutting feed interpolation
provides smooth acceleration and deceleration to reduce stress and strain
on the machine. If this function is enabled (bit 1 of parameter No. 1610,
CTB), acceleration/deceleration is performed as follows:
Cutting feed: Bell–shaped acceleration/deceleration (constant accel-
eration time)
Specify the acceleration/deceleration time constant for
each axis in parameter No. 1622.
Jog feed: Exponential or bell–shaped acceleration/deceleration
(constant acceleration time)
Specify the acceleration/deceleration time constant for
each axis in parameter No. 1624.
Acceleration/
deceleration
function
Speed
Speed
Time Time
Bell–shaped Acceleration/
Deceleration
T:Time Constant
TT
Bell–shaped acceleration/deceleration after cutting feed interpolation is
an optional function. This function is enabled when the CTB bit (bit 1 of
parameter No. 1610) is specified. The time constants for cutting feed and
for jog feed for each axis are specified in parameter Nos. 1622 and 1624
respectively, in the same way as exponential acceleration/deceleration.
The values specified for the FL feedrate for cutting feed (parameter No.
1623) and the FL feedrate for jog feed (parameter No. 1625) are ignored
(always assumed to be 0).
7.2.4
Bell–Shaped
Acceleration/
Deceleration after
Cutting Feed
Interpolation
General