INVT Goodrive270 Series Operation Manual page 175

Goodrive270 series VFD for fan and pump
Function
Name
code
High-point
P03.05 frequency for
switching
Speed-loop output
P03.06
filter
Electromotive slip
compensation
P03.07
coefficient of vector
control
Braking slip
compensation
P03.08
coefficient of vector
control
Description
PI parameter
P03.00，P03.01
P03.03，P03.04
Output frequency f
P03.02 P03.05
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.
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)
0–8 (corresponding to 0–2
Slip compensation coefficient is used to adjust
the slip frequency of the vector control and
improve the speed control accuracy of the
system. Adjusting the parameter properly can
control the speed steady-state error.
Setting range: 50–200%
-165-
Function parameter list
8
/10ms)
Default Modify
○
10.00Hz
○
0
○
100%
○
100%