
PROGRAMMING
B–63534EN/02
19. HIGH SPEED CUTTING FUNCTIONS
515
Speed
Acc/Dec pattern can be changed in each condition.
Acceleration
Acceleration
and
+ move
Deceleration
and
+ move
Acceleration
and
– move
Deceleration
and
– move
Time
Time
Fig.19.10 (b) Acceleration/deceleration with this function
Optimum torque acceleration/deceleration selects the acceleration pattern set
with parameters on the basis of the axial movement direction and the
acceleration/deceleration state, determines the acceleration for each axis
from the current speed, and controls the tangential acceleration/deceleration
for rapid traverse in AI high precision contour control and AI nano high
precision contour control mode.
The reference acceleration is the standard acceleration to set the
acceleration pattern, usually this is the same as the acceleration for rapid
traverse at the selecting a motor.
Reference acceleration[mm/sec
2
]
=
No.177360(Acc/Dec Time Constant of rapid traverse)
No.14201000 (Rapid traverse rate)
By setting both FAP, bit 0 of parameter No. 19540, and FRP, bit 5 of
parameter No. 19501, to 1 and setting parameter to determine the reference
acceleration (No. 1420 and No.1773 ) as below, the acceleration/deceleration
for rapid traverse in AI high precision contour control and AI nano high
precision contour control mode will be optimum torque acceleration/
deceleration. When Optimum torque acceleration/deceleration is enabled,
linear type positioning for rapid traverse is selected automatically in AI high
precision contour control and AI nano high precision contour control mode
even if the parameter LRP, bit 1 of parameter No. 1401, is set to 0 (nonlinear
type is selected). If rapid traverse is subject to optimum torque acceleration/
deceleration, after–interpolation acceleration/deceleration does not apply to
rapid traverse.
Description
D Calculation of the
reference acceleration
D Setting optimum torque
acceleration/deceleration