66
3.3 Then press the run key, and the frequency inverter will be set.
3.4 When the operation light on the panel goes out, it indicates that the setting is done.
F2 group motor vector control parameters
F2 group function codes are only valid for vector control and invalid for VF control.
F2 - 00 speed loop proportional gain kp1
1
～
100 [30]
F2 - 01 speed loop proportional gain Ti1
0.01
～
10.00 [0.50s]
F2 - 02 switching frequency f1
0.00
～
F2-05 [5.00hz]
F2 - 03 speed loop proportional gain kp2
1
～
100 [20]
F2 - 04 speed loop proportional gain Ti2
0.01
～
10.00 [1.00s]
F2 - 05 switching frequency F2
F2 - 05 ~ maximum frequency [ 10.00 Hz ]
The frequency inverter operates at different frequencies, and different PI parameters of the speed loop can be
selected.
When the operating frequency is less than the switching frequency 1 (F2 - 02), the speed loop pi adjustment
parameters are F2 - 00 and F2 - 01.
When the operating frequency is greater than the switching frequency 2, the speed loop pi adjustment parameters
are F2 - 03 and F2 - 04.
The speed loop pi parameters between switching frequency 1 and switching frequency 2 are linearly switched by two
sets of pi parameters, as shown in figure 5 - 03:
Figure 5 - 03 pi parameter diagram
By setting the proportional coefficient and the integration time of the speed regulator, the speed dynamic
response characteristics of the vector control can be adjusted.
Increasing the proportional gain and decreasing the integration time can accelerate the dynamic response of the
speed loop. However, too much proportional gain or too little integration time may cause the system to oscillate.
The suggested adjustment method is:
If the factory parameters cannot meet the requirements, fine-tune them based on the factory value parameters
to increase the proportion and benefit first, so as to ensure that the system does not oscillate. Then reduce the
integration time so that the system has faster response characteristics and less overshoot.
For vector control without speed sensor, this parameter is used to adjust the speed stability accuracy of the
motor: when the motor is loaded with low speed, this parameter is increased, and vice versa.
Note: improper setting of pi parameters may lead to excessive speed overshoot. Even when overshoot falls
back, over-voltage faults occur.
Parameter
Frequency
