INVT Goodrive350 Series Operation Manual page 157

Goodrive350 IP55 High-ingress Protection Series VFD
Group P03––Vector control of motor 1
Function
Name
code
Speed-loop
P03.00
proportional gain 1
Speed-loop integral
P03.01
time 1
Low-point
P03.02 frequency for
switching
Speed-loop
P03.03
proportional gain 2
Speed-loop integral
P03.04
time 2
High-point
P03.05 frequency for
switching
Description
The parameters P03.00–P03.05
only to vector control mode. Below the
switching frequency 1 (P03.02), the speed-loop
PI parameters are: P03.00
the switching frequency 2 (P03.05), the
speed-loop PI parameters are:
P03.04. PI parameters are obtained according
to the linear change of two groups of
parameters. See the following figure:
PI parameter
P03.00，P03.01
P03.02 P03.05
The speed loop
characteristics of vector control can be adjusted
by setting the proportional coefficient and
integral time of speed regulator. Increasing
proportional gain or reducing integral time can
accelerate dynamic response of speed loop;
however, if the proportional gain is too large or
integral time is too small, system oscillation and
overshoot may occur; If proportional gain is too
small, stable oscillation or speed offset may
occur.
PI parameters have a close relationship with
the inertia of the system. Adjust PI parameters
depending on different loads to meet various
demands.
Setting range of P03.00: 0.0–200.0
Setting range of P03.01: 0.000–10.000s
Setting range of P03.02:
Setting range of P03.03: 0.0–200.0
Setting range of P03.04: 0.000–10.000s
Setting range of P03.05:
output frequency)
-139-
are applicable
and P03.01. Above
P03.03 and
P03.03，P03.04
Output frequency f
dynamic response
0.00Hz–P03.05
P03.02–P00.03 (Max.
Function parameter list
Default Modify
○
20.0
○
0.200s
○
5.00Hz
○
20.0
○
0.200s
○
10.00Hz