V/F Control Parameters: F4.00-F4.14 - Powtran PI9000 series User Manual

Chapter 5 Function parameter
occasion that requires to gently start or stop, such as elevators, conveyor belts, etc.. The
function code F3.14 and F3.15 respectively defined the proportion of S curve start-section
and the proportion of S curve end-section
2: S curve acceleration and deceleration B
In the mode of S curve acceleration and deceleration B, the motor rated frequency fb is
always the inflection point of S curve. Usually used for the occasion of high-speed regional
above the rated frequency that requires rapid acceleration and deceleration.
Proportion of S curve
F3.14
start-section
Proportion of S curve
F3.15
end-section
Output
frequency(Hz)
设定频率 f
Set frequency (f)
Output frequency(Hz)
设定频率 f
Set frequency (f)
额定频率 fb
Rated frequency (fb)
The function code F3.14 and F3.15 respectively defined the proportion of start-section
and the proportion of end-section for S curve acceleration and deceleration A，the two
function code must meet: F3.14 + F3.15 ≤ 100.0%.
In the Figure of the S-curve acceleration and deceleration A, t1 is the time parameter
defined by F3.14, the slope of the output frequency variation during this period is gradually
increasing. t2 is the time parameter defined by F3.15, the slope of the output frequency
variation during the period is gradually changed to 0. Within the time between t1 and t2, the
slope of the output frequency variation is fixed, i.e. the linear acceleration and deceleration is
achieved in this interval.

5-2-6.V/F control parameters: F4.00-F4.14

0.0% to (100.0% to F3.15)
0.0% to (100.0% to F3.14)
Hz
t2
t1
S 曲线加减速 A 示意图
Schematic diagram of S curve ac/deceleration A
Hz
T
曲线加减速
S
Schematic diagram of S curve ac/deceleration B
t1
t2
示意图
B
120
★
30.0%
★
30.0%
Time(t)
时间 t
Time(t)
时间 t