DRV-28 inverter
s Function parameter list
-139-
Function
code
Name
Detailed parameter description
Default
value
Modi
fy
P03.00
Speed loop
proportional gain 1
Parameters of P03.00–P03.05 fit for vector control
mode only. Below P03.02, speed loop PI parameter
is P03.00 and P03.01; above P03.06, speed loop PI
parameter is P03.03 and P03.04; in between, PI
parameter is obtained by linear variation between
two groups of parameters, as shown below.
Output frequency f
PI parameter
P03.02
P03.05
P03.03
，
P03.04
P03.00
，
P03.01
The speed loop dynamic response characteristics of
vector control can be adjusted by setting the
proportional coefficient and integral time of speed
regulator. Increase proportional gain or decrease
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.
Speed loop PI parameter is closely related to the
system inertial, users should make adjustment
based on default PI parameter according to different
load characteristics to fulfill different needs.
Setting range of P03.00:0.0–200.0;
Setting range of P03.01: 0.000–10.000s
Setting range of P03.02: 0.00Hz–P03.05
Setting range of P03.03: 0.0–200.0
Setting range of P03.04: 0.000–10.000s
Setting range of P03.05: P03.02–P00.03 (Max.
output frequency)
20.0
○
P03.01
Speed loop
integral time 1
0.200s
○
P03.02
Switch low point
frequency
5.00Hz
○
P03.03
Speed loop
proportional gain
2
20.0
○
P03.04
Speed loop
integral time 2
0.200s
○
P03.05
Switch over high
point frequency
10.00Hz
○
P03.06
Speed loop
output filter
0–8 (corresponds to 0–2^8/10ms)
0
○
P03.07
Vector control
slip
compensation
coefficient
Slip compensation coefficient is used to adjust the
slip frequency of vector control to improve speed
control precision. This parameter can be used to
control speed offset.
100%
○
