Savch S3100E Series, Руководство пользователя

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02 Vector Control Parameters
02 Group parameters are only valid for vector control, not for V/f control.
02-00
Speed loop proportional gain 1 
Factory setting 20
Setting range 1
～
100
02-01
Speed loop integration time 1 
Factory setting
0.50s
Setting range 0.01s
～
10.00s
02-02
Switching frequency 1

Factory setting
5.00Hz
Setting range 0.00 ～ 02-05
02-03
Speed loop proportional gain 2 
Factory setting
20
Setting range 0
～
100
02-04 Speed loop integration time 2

Factory setting
1.00s
Setting range 0.01s
～
10.00s
02-05
Switching frequency 2

Factory setting
10.00Hz
Setting range 02-02 ～ max frequency
When the inverter runs at different frequencies, you can select different speed loop PI parameters. Below the
switching frequency 1 (02-02), the speed loop PI parameters are: 02-00 and 02-01. Above the switching
frequency 2 (02-05), the speed loop PI parameters are: 02-03 and 02-04. Between the two, the PI parameters are
obtained from the linear changes of the two sets of parameters, as shown in Figure 5-2:
PI parameters
02-03
02-04
Frequency
command
02-05 02-02
02-00
02-01
Figure 5-2 Schematic diagram of PI parameter
By setting the proportional coefficient and integral time of the speed regulator, the dynamic response
characteristics of the speed loop of vector control can be adjusted. Increasing the proportional gain and reducing
the integration time can speed up the dynamic response of the speed loop. However, if the proportional gain is too
large or the integration time is too small, it is easy to cause system oscillation and overshoot. If the proportional
gain is too small, it may easily lead to steady-state oscillation of the system, and there may be a static speed
difference.
The PI parameters of the speed loop are closely related to the inertia of the system. For different load
characteristics, the default PI parameters need to be adjusted to meet the needs of various occasions.