Chapter 5 Function parameter
86
Ch
ap
ter 5
PID
7
Communications given
8
Analog AI3 setting
9
100.0% Corresponding to the motor rated voltage(b0.02)
F4.13
V/F separation voltage
digital setting
0V to rated motor voltage
0V
☆
F4.14
V/F separation voltage
rise time
0.0s to 1000.0s
0.0s
☆
5-2-7.
Vector control parameters: F5.00-F5.15
F5 function code is only valid to vector control, invalid to V/F control
Code
Parameter name
Setting range
Factory
setting
Change
Limit
F5.00
Proportion of speed loop G1
1~100
30
☆
F5.01
Speed loop integral T1
0.01s~10.00s
0.50s
☆
F5.02
Switching frequency 1
0.00~F5.05
5.00Hz
☆
F5.03
Proportion of speed loop G2
1~100
20
☆
F5.04
Speed loop integral T2
0.01s~10.00s
1.00s
☆
F5.05
Switching frequency 2
F5.02~F0.19(max frequency)
10.00Hz
☆
PI parameter
F5.01
F5.04
F5.03
F5.00
F5.02
F5.05
Frequency of instruction
Figure 5-14:PI parameter diagram
Converter operating in different frequency can choose different speed ring PI parameters.
Operating frequency is less than the switching frequency 1 (F5.02), speed ring PI control
parameters for F5.00 and F5.01. Operating frequency is greater than the switching frequency 2
(F5.05), speed in PI control parameters for F5.03 and F5.04. The speed ring PI parameters of
switching frequency 1 and switching frequency 2 are for the two groups of PI parameter linear
switching, as shown in figure:
Through the set speed regulator proportion coefficient and the integral time, can adjust the
speed of the vector control dynamic response characteristics.
Gain take large, quick response, but will produce oscillation; Gain take small, response lag.
Integral time is too large, slow response, external interference control variation; Integral time
small, better reaction speed, but too small happen oscillation.
Set this value to considering the control stability and response speed, if the factory parameters
can't meet the requirements in the factory value based on parameter adjustment, first increase
proportion gain to ensure that the system is not oscillation; Then reduce integration time, make the
system have faster response, while not letting overshoot get too big.
Note: if the PI parameters Settings, may lead to excessive speed overshoot. Even in overshoot
back occurs when overvoltage fault.
F5.06
Speed loop integral
valid
0
0
☆
invalid
1
