Acceleration/Deceleration Curve Selection (A097, A098, A131, A132) - Hitachi L700 SERIES Instruction Manual

4.2.25 Acceleration/deceleration curve selection
You can set different patterns of motor acceleration and
deceleration according to the type of system to be driven by the
inverter.
Use functions "A097" and "A098" to select acceleration and
deceleration patterns, respectively.
You can individually set an acceleration pattern for acceleration and a deceleration pattern for
deceleration.
When the acceleration/deceleration pattern is set other than 00 (linear) using analog input as frequency
source is to be avoided because it prolongs the acceleration or deceleration time.
Item
Acceleration/deceleration
curve selection
Acceleration/deceleration
curve constants setting
Curvature for EL-S-curve
acceleration 1/2
Curvature for EL-S-curve
deceleration 1/2
(1) Acceleration/deceleration pattern selection
Select acceleration and deceleration patterns with reference to the following table:
Setting 00
Curve Linear
A097
(accele-
ration
pattern)
Time
A098
(decele-
ration
pattern)
Time
With this pattern, the
motor is accelerated or
decelerated linearly
Descrip- until its speed reaches
tion the set output
frequency.
Function code Data or range of data
A097/A098
A131/ A132
0 to 50 (%)
A150/A151
0 to 50 (%)
A152/A153
01
S curve
Time
Time
This pattern is This pattern is effective for the tension control
effective for preventing on a winding machine driven by the inverter (to
the collapse of cargo prevent cutting of the object to be wound).
carried by a lift or
conveyor driven by the
inverter.
Chapter 4 Explanation of Functions
A097: Acceleration curve selection
A098: Deceleration curve setting
A131: Acceleration curve constants setting
A132: Deceleration curve constants setting
A150: Curvature for EL-S-curve acceleration 1
A151: Curvature for EL-S-curve acceleration 2
A152: Curvature for EL-S-curve deceleration 1
A153: Curvature for EL-S-curve deceleration 2
00 Linear acceleration/deceleration
01 S-curve acceleration/deceleration
02 U-curve acceleration/deceleration
03 Inverted-U-curve acceleration/deceleration
04 EL-S-curve acceleration/deceleration
01 (small degree of swelling)
01 to 10
10 (large degree of swelling)
Curvature of EL-S curve (for acceleration)
Curvature of EL-S curve (for deceleration)
02
U curve Inverted-U curve
Time
Time
4 - 31
Related code
Description
03 04
EL-S curve
Time
Time
This pattern is similar
to the S-curve pattern
for the shockless
starting and stopping
of the motor, except
that the middle
section of this pattern
is linear.
Time
Time