P23 Group--Vector Control Of Motor 2 - INVT Goodrive270 Series Operation Manual

Goodrive270 series VFD for fan and pump
Function
Name
code
P19.08 Reserved
AI3 of I/O card
P19.09
Input voltage
P23 group––Vector control of motor 2
Function
Name
code
Speed-loop
P23.00
proportional gain 1
Speed-loop integral
P23.01
time 1
Low-point
P23.02 frequency for
switching
Speed-loop
P23.03
proportional gain 2
Speed-loop integral
P23.04
time 2
High-point
P23.05 frequency for
switching
Description
0.00–10.00V
Description
The parameters P23.00–P23.05 are applicable
only to vector control mode. Below the switching
frequency 1 (P23.02), the speed-loop PI
parameters are: P23.00 and P23.01. Above the
switching frequency 2 (P23.05), the speed-loop
PI parameters are: P23.03 and P23.04. PI
parameters are obtained according to the linear
change of two groups of parameters. See the
following figure:
PI parameters
(P23.00,P23.01)
P23.02 P23.05
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.
P23.00 setting range: 0.0–200.0
-239-
(P23.03,P23.04)
Output frequency f
Function parameter list
Default Modify
●
0.00V
Default Modify
○
20.0
○
0.200s
○
5.00Hz
○
20.0
○
0.200s
○
10.00Hz