INVT CHF100A-004G-2, Operation Manual

Page: 49 / 156

CHF100A series high performance universal inverter
.48.
Function
Code
Name Description
Setting
Range
Factory
Setting
P3.04
ASR integral
time K
i
2
0.01~10.00s 0.01~10.00 1.00s
P3.05
ASR switching
point 2
P3.02~P0.03 P3.02~P0.03 10.00Hz
P3.00
～
P3.05 are only valid for vector control and torque control and invalid for V/F
control. Through P3.00
～
P3.05, user can set the proportional gain K
p
and integral time K
i
of speed regulator (ASR), so as to change the speed response characteristic. ASR's
structure is shown in following figure.
Figure 6.6 ASR diagram.
P3.00 and P3.01 only take effect when output frequency is less than P3.02. P3.03 and
P3.04 only take effect when output frequency is greater than P3.05. When output
frequency is between P3.02 and P3.05, K
p
and K
I
are proportional to the bias between
P3.02 and P3.05. For details, please refer to following figure.
Figure 6.7 PI parameter diagram.
The system's dynamic response can be faster if the proportion gain K
p
is increased;
However, if K
p
is too large, the system tends to oscillate.
The system dynamic response can be faster if the integral time K
i
is decreased;
However, if K
i
is too small, the system becomes overshoot and tends to oscillate.
P3.00 and P3.01 are corresponding to K
p
and K
i
at low frequency, while P3.03 and P3.04
are corresponding to K
p
and K
i
at high frequency. Please adjust these parameters
according to actual situation. The adjustment procedure is as follow: