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“A” Group: Standard Functions
Configuring Drive
Parameters
3–26
Accel/Decel
Characteristics
Standard (default) acceleration and deceleration is linear with time. The inverter CPU can also
calculate other curves shown in the graphs below. The sigmoid, U-shape, and reverse U-shape
curves are useful for favoring the load characteristics in particular applications. Curve settings
for acceleration and deceleration are independently selected via parameters A097 and A098,
respectively. You can use the same or different curve types for acceleration and deceleration.
time
Output frequency
time
Output frequency
time
Output frequency
time
Output frequency
time
Output frequency
time
Output frequency
time
Output frequency
time
Output frequency
Linear Sigmoid U-shape Reverse U-shape
Accel
A97
Decel
A98
00Set value
Curve
01 02 03
Linear acceleration
and deceleration for
general-purpose use
Avoid jerk on start/stop
for elevators; use for
delicate loads on con-
veyors
Tension control for winding applications, web
presses, roller/accumulators
Typ ic al
applications
“A” Function
Run
Mode
Edit
Lo Hi
Defaults
Units
SRW Display
Func.
Code
Name Description
–FE
(CE)
–FU
(UL)
–FR
(Jpn)
A097 Acceleration curve
selection
Set the characteristic curve
of Accel1 and Accel2, four
options:
00 Linear
01 S-curve
02 U-shape
03 Reverse U-shape
✘ ✘ 00 00 00 —
>A097 ACCEL
LINE Linear
A098 Deceleration curve
selection
Set the characteristic curve
of Decel1 and Decel2, four
options:
00 Linear
01 S-curve
02 U-shape
03 Reverse U-shape
✘ ✘ 00 00 00 —
>A098 DECEL
LINE Linear