Accel/Decel: S-Curve Characteristics - YASKAWA V7 Technical Manual

5.3 ACCEL/DECEL: S-CURVE CHARACTERISTICS

n023 : S-Curve Selection
Setting of this parameter
determines the S-curve
(starting) characteristics
of the acceleration ramp.
0 = S-curve disabled
1 = S-curve
of 0.2 seconds
2 = S-curve time
of 0.5 seconds
3 = S-curve time
of 1.0 seconds
NOTE: Actual accel time = Set accel time + (2
Actual decel time = Set decel time + (2
The following figure shows FWD/REV switching and acceleration & deceleration to a stop with
S-curve active.
FORWARD RUN COMMAND
REVERSE RUN COMMAND
OUTPUT FREQUENCY
RUN
FREQ
COMMAND
0
*
*
ACCELERATION
= S-CURVE CHARACTERISTIC
5-3
Factory setting: 0
Range: 0 to 3
OUTPUT
FREQUENCY
S-Curve Characteristics
Time (T
S-curve selection)
S-curve selection)
DECELERATION
MIN. OUTPUT
FREQUENCY
n016
n016
DECELERATION
ACCELERATION
Accel ramp per
selected Accel Time
(n019 or n021 )
TIME
)
SC
DC INJECTION
TIME AT STOP
n090