
B–63173EN–1/01
7. FEEDRATE CONTROL/ACCELERATION
AND DECELERATION CONTROL
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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
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 for
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