- 110 -
Switching frequency 2
Factory default
value
10.00Hz
F2-05
Setup range F2-02 ~ maximum frequency
F2-00 and F2-01 are PI adjustment parameters when the running frequency
is lower than switching frequency 1 (F2-02) F2-00 and F3-01 are PI
adjustment parameters when the running frequency is higher than switching
frequency 2. PI parameter of frequency channel between the switching
frequency 1 and switching frequency 2 is linear switching between two
groups of PI parameters, as shown in the figure below:
Fig.6-2 Schematic diagram of PI parameter
The speed dynamic response characteristics of the vector control can be
adjusted by setting the proportional coefficient and integration time of the
speed regulator. Increasing the proportional gain or reducing the integration
time can accelerate the dynamic response of the speed loop. However, if
the proportional gain is too large or the integration time is too short, it will
cause the oscillation of the system.
Recommended adjustment method:
If the factory default parameters cannot meet the requirements, the relevant
parameter values can be subject to fine tuning.
Increase the proportional gain while ensuring no oscillation to the system,
and then reduce the integration time to ensure that the system has quick
response characteristics and small overshoot.
Note: Improper PI parameter setting may cause too large speed overshoot.
Voltage fault may occur when the overshoot drops.
PI
Parameter
Frequency Command
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