INVT GD270-030-4 - P03 Group Vector Control of Motor 1

Goodrive270 series VFD for fan and pump Function parameter list
-139-
P03 group²Vector control of motor 1
Function
code
Name Description Default
Modify
P03.00
Speed-loop
proportional gain 1
The parameters
P03.00±P03.05 are applicable
only to vector control mode. Below the switching
frequency 1 (
P03.02), the speed-loop PI
parameters are:
P03.00 and P03.01. Above the
switching frequency 2 (
P03.05), the speed-loop
PI parameters are:
P03.03 and P03.04. PI
parameters are obtained according to the linear
change of two groups of parameters. See the
following figure:
Output frequency f
PI parameter
P03.02 P03.05
P03.03ˈP03.04
P03.00ˈP03.01
The speed loop dynamic response
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.
P03.00
setting range: 0.0±200.0
P03.01
setting range: 0.000±10.000s
P03.02
setting range: 0.00Hz±P03.05
P03.03
setting range: 0.0±200.0
P03.04
setting range: 0.000±10.000s
P03.05
setting range: P03.02±P00.03 (Max.
output frequency)
20.0 ƻ
P03.01
Speed-
loop integral
time 1
0.200s ƻ
P03.02
Low-
point frequency
for switching
5.00Hz ƻ
P03.03
Speed-loop
proportional gain 2
20.0 ƻ
P03.04
Speed-
loop integral
time 2
0.200s ƻ
P03.05
High
-
point frequency
for switching
10.00Hz ƻ