P2 Vector Control Parameter - Veikong VFD200A Series Operation Manual

2: Complete auto-tuning to ensure the dynamic control performance of the frequency converter,
please select the full tuning.
Before the asynchronous machine is fully tuned, the motor must be disconnected from the load to
keep the motor in no-load state. The parameters P1-00~P1-05 must be correctly set. (The encoder pulse
number P1-27 must be set under the closed-loop control with PG card.)
The inverter can obtain five motor parameters P1-06~P1-10, AB phase sequence P1-30 (with PG card)
of the encoder, and vector control current loop PI parameters P2-13~P2-16.
Action Description: Set the function code to 2, then press the RUN button, the inverter will perform a
complete tuning.
3: Applicable to the case of no encoder, self-learning of the motor parameters under the static state of
the motor (the motor may still have slight jitter at this time, need to pay attention to safety)
Action description: Set the function code to 3, then press RUN key, the inverter will perform no-load
tuning.
Note: Tuning supports motor tuning in keyboard operation mode, terminal mode and communication
mode.

P2 Vector control parameter

P2 function code is valid only for vector control and invalid for VF control.
P2-00 Speed loop proportional gain 1
P2-01 Speed loop integration time 1
P2-02 Switchover frequency 1
P2-03 Speed loop proportional gain 2
P2-04 Speed loop integration time 2
P2-05 Switchover frequency 2
 The inverter runs at different frequencies and can select different speed loop PI parameters. When the
running frequency is less than the Switchover frequency 1 (P2-02), the speed loop PI adjustment
parameters are P2-00 and P2-01. When the running frequency is greater than the Switchover frequency 2,
the speed loop PI adjustment parameters are P2-03 and P3-04. Switching the speed loop PI parameter
between frequency 1 and frequency 2, linearly switching between two sets of PI parameters, as shown in
Figure 6-2.
The speed dynamic response characteristic of the vector control can be adjusted by setting the
proportionality factor and the integration time of the speed regulator.
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, the
system can oscillate. The recommended adjustment method is:
Chapter 6 Parameter Instruction
1～100
0.01s～10.00s
0.00～P2-05
1～100
0.01s～10.00s
P2-02～Maximum frequency
PI parameter
P2-00
P2-01
P2-03
P2-04
P2-02
Figure 6-2 PI Parameter diagram
Frequency command
P2-05
54
Default：30
Default：0.50s
Default：5.00Hz
Default：20
Default：1.00s
Default：10.00Hz