Basic parameter group 01
PARAMETER DESCRIPTION 81
Acceleration/deceleration curve selection
Linear acceleration /deceleration curve(01-05(P.29)=“0”)
An acceleration slope is formed by the combination of 01-06(P.7) and 01-09(P.20). A deceleration slope is formed
by the combination of 01-07(P.8) and 01-09(P.20).
When the target frequency varies, it increases according to the “acceleration slope” or decreases according to the
“deceleration slope” linearly. See the figure below:
Output frequency
Time
01-06(P.7)
01-07(P.8)
Acceleration slope
Deceleration slope
01-09(P.20)
S shape acceleration /deceleration curve 1(01-05(P.29)=“1”)
An acceleration slope is formed by the combination of 01-06(P.7) and 01-03(P.3). A deceleration slope is formed
by the combination of 01-07(P.8) and 01-03(P.3).
The acceleration / deceleration curve has an S-shape change according to the “acceleration / deceleration slope”.
The S-shape equation between 0 and 01-03 (P.3) is:
The S-shape equation above 01-03 (P.3) is:
7.
9
5
3.
7.
9
4
2
2
Pf
P
P
t
t = time; f = output frequency
Acceleration slope
Output frequency
01-06(P.7)
01-03(P.3)
Time
S shape acceleration /deceleration curve 2(01-05(P.29)=“2“)
An acceleration slope is formed by the combination of 01-06(P.7) and 01-09(P.20). A deceleration slope is formed
by the combination of 01-07(P.8) and 01-09(P.20).
When the target frequency varies, the acceleration increases S-shape according to the “acceleration slope”. The
deceleration decreases S-shape according to the “deceleration slope”. As shown in the figure below, when
frequency is adjusted from f0 to f2, it accelerates S-shape once, and the time is 01-06(P.7) × (f2-f0) / 01-09(P.20).
Then if the frequency is adjusted from f2 to f3, it accelerates S-shape the second time, and the time is 01-06(P.7) ×
(f3-f2) / 01-09(P.20)
Acceleration slope
Time
Output frequency
f0
f2
f3
S shape acceleration /deceleration curve 3(01-05(P.29)=“3”)
Please refer to 5.2.12 S pattern time setting.