
PROGRAMMING
B–63534EN/02
22. RISC PROCESSOR
609
Acceleration is performed so that the feedrate specified for a block is
attained when the block is executed.
N2N1
F1
F2
F3
Time
Programmed speed
Feedrate obtained by
acceleration/
deceleration
before interpolation
Feedrate
If “1” is set to bit 7(BDO) and bit 1(NBL) of parameter No.8402 or bit
3(RSB) of parameter No.1603, bell–shaped acceleration/deceleration is
applied as the acceleration/deceleration before interpolation.
A permissible acceleration for the linear acceleration/deceleration of each
axis is set in parameter 19510. Acceleration change time (B) (period of
transition from constant speed state (A) to constant acceleration/
deceleration state (C)) is set in parameter 8416 (common to all axes). In
the constant acceleration/deceleration state (C), acceleration/deceleration
is performed with the maximum tangential acceleration not exceeding the
permissible acceleration of each axis specified in parameter 19510.
The acceleration change time specified in parameter 8416 is held
constant, regardless of the tangential acceleration.
Tangential feedrate
An optimum gradient is automatically
calculated from the setting made in
parameter 19510.
Time set in parameter 8416
(A) (B) (B) (B) (B)(A) (A)(C) (C)
D Example of acceleration
Look–ahead bell–shaped
acceleration/deceleration
before interpolation
D Setting an acceleration