INVT Goodrive35 Series Operation Manual page 70

Goodrive35 Series Closed-loop Vector Control VFD
Functio
Name
n code
P03 Group Vector control
ASR proportional
P03.00
gain1
P03.01 ASR integral time1
Low-point frequency
P03.02
for switching
ASR proportional
P03.03
gain 2
P03.04 ASR integral time 2
High-point frequency
P03.05
for switching
Detailed instruction of parameters
The parameters of P03.00–P03.05 are applicable
only to the vector control mode. When the frequency
is lower than P03.02 (Low-point frequency for
switching), the ASR PI parameters are P03.00 and
P03.01. When the frequency is higher than P03.05
(High-point frequency for switching), the ASR PI
parameters are P03.03 and P03.04. When the
frequency is between P03.02 and P03.05, the PI
parameters are obtained based on the linear change
of these two groups of parameters, as shown in the
following figure.
PI parameters
(P03.00,P03.01)
P03.02
You can adjust the dynamic response characteristics
of the automatic speed regulator (ASR) in vector
control by setting the ASR proportional gain and
integral time. Both increasing the proportional gain
and decreasing the integral time can accelerate the
dynamic response of the ASR. However, if the
proportional gain is too large or the integral time is
too short, system oscillation or overadjustment may
be caused. If the proportional gain is too small,
system steady-state oscillation may be easily
caused, and static speed error may also occur.
The ASR PI parameters are closely related to the
inertia of the system. The default PI parameters
need to be modified based on the characteristics of
loads to meet requirements of various scenarios.
The setting range of P03.00: 0.0–200.0
The setting range of P03.01: 0.000–10.000s
The setting range of P03.02: 0.00 Hz–P03.05
The setting range of P03.03: 0.0–200.0
63
(P03.03,P03.04)
Output frequency f
P03.05
Function parameters
Default Modif
value y
20.0
○
0.200 s
○
5.00 Hz
○
20.0
○
0.200 s
○
10.00
○
Hz