
B–63523EN–1/03
7. FEEDRATE CONTROL/ACCELERATION
AND DECELERATION CONTROL
937
In Look–ahead bell–shaped acceleration/deceleration before
interpolation, the speed during acceleration/deceleration is as shown in
the figure below.
T1: Time determined from the specified speed and the specified acceleration
Specified acceleration:
In case of AI contour control (AICC)
and AI nano contour control (AI nanoCC)
Parameter No.1770/Parameter No.1771
In case of AI High precision contour control (AI–HPCC)
and AI nano High precision contour control (AI–nanoHPCC)
Parameter No.8400/Parameter No.8401 (or No.19510)
T2: Acceleration change time
In case of AICC and AI nanoCC : Parameter No.1772
In case of AI–HPCC and AI–nanoHPCC : Parameter No.8416
T1
T2
T2
Speed
Linear acceleration/
deceleration
Non–linear
acceleration/
deceleration
Non–linear
acceleration/
deceleration
Time
Specified
speed
Fig. 7.1.21(a)
The time T1, shown above, varies with the specified speed. If the
specified speed is low, the speed will be as shown below, causing linear
acceleration/deceleration not reaching the specified acceleration.
7.1.21
Look–ahead
Bell–Shaped
Acceleration/
Deceleration Before
Interpolation Time
Constant Change
Function (M Series)
General