INVT Goodrive350-19 Series Operation Manual page 287

Goodrive350-19 Series VFD for Crane
Function
Name
code
proportional gain 2 parameters. See the following figure:
Speed-loop integral
P23.04
time 2
High-point
P23.05 frequency for
switching
Speed-loop output
P23.06
filter
Electromotive slip
compensation
P23.07
coefficient of vector
control
Power-generation
slip compensation
P23.08
coefficient of vector
control
Description
PI parameters
(P23.00,P23.01)
P23.02 P23.05
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 P23.00: 0.0–200.0
Setting range of P23.01: 0.000–10.000s
Setting range of P23.02: 0.00Hz–P23.05
Setting range of P23.03: 0.0–200.0
Setting range of P23.04: 0.000–10.000s
Setting range of P23.05: P23.02–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%
-275-
(P23.03,P23.04)
Output frequency f
dynamic response
8
/10ms)
Function parameters
Default Modify
○
0.200s
○
10.00Hz
○
0
○
100%
○
100%