HV580L Series Frequency Inverter
93
parameters are P2-03 and P2-04.
• If the running frequency is between P2-02 and P2-05, the speed loop PI parameters are obtained from the
linear switchover between the two groups of PI parameters, as shown in Figure 6-2.
Figure 6-2: Relationship between running frequencies and PI parameters
The speed dynamic response characteristics in vector control can be adjusted by setting the proportional gain
and integral time of the speed regulator.
To achieve a faster system response, increase the proportional gain and reduce the integral time. Be aware
that this may lead to system oscillation.
The recommended adjustment method is as follows:
If the factory setting cannot meet the requirements, make proper adjustment. Increase the proportional gain
first to ensure that the system does not oscillate, and then reduce the integral time to ensure that the system
has quick response and small overshoot.
Note: Improper PI parameter setting may cause too large speed overshoot, and over voltage fault may even
occur when the overshoot drops.
P2-06
Vector control slip gain
Default
100%
Setting Range
50%
~
200%
For SFVC, it is used to adjust speed stability accuracy of the motor. When the motor with load runs at a very
low speed, increase the value of this parameter; when the motor with load runs at a very large speed,
decrease the value of this parameter.
For CLVC, it is used to adjust the output current of the AC drive with same load.
P2-07
Time constant of speed
loop filter
Default
0.000s