Veikong VFD500 Series User Manual page 107

Chapter 5 Function code
PID through the target signal (command) and the controlled amount of the difference between the feedback
signal proportional (P), integral (I) and differential (D) operation, adjust the inverter output frequency, etc., to achieve
closed-loop system, the controlled amount Stable at the target value.
VFD500 built-in process PID structure as shown below, suitable for flow control, pressure control, temperature
control and tension control applications.
Order Ref
P40.40
access
Comman
P40.04
d ramp
P40.05
P40.06
+
P40.07
P40.08
P40.09
P40.10
P40.33
Get
Feedback filtering
feedback
P40.11
P40.12
P40.13
Function
Parameter name
code
PID reference
P40.04
source
P40.05 PID given range
P40.06 PID digital setting 0
P40.07 PID digital setting 1
P40.08 PID digital setting 2
P40.09 PID digital setting 3
VFD500 high performance vector control frequency inverter user manual
P40.14
Output
Kp
characteristic
s
p
K 1
0
Err
Ti s
1 
1
-
Kp Td s
Unit's digit:PID main reference
source(ref1)
0：Digital setting
1：AI1
2：AI2
3：AI3(IO expansion board)
4：Reserved
5：HDI high frequency pulse
6：Communication
Ten's digit:PID Auxiliary reference
source(ref2)Same as Unit's digit
0.01～655.35
0.0～P40.05
0.0～P40.05
0.0～P40.05
0.0～P40.05
- 105-
P40.41
P40.42
Output
P40.15,P40.16
compensatio
Output limited
+
n
+
+
+
+
P40.30
Differential limit
Description
P40.15
P40.16
P40.34
Output
Output filtering
limited
PID
output
Default Property
00
☆
100.00
☆
0.0%
☆
0.0%
☆
0.0%
☆
0.0%
☆