Powtran PI9000 series - Page 167

Chapter 5 Function parameter
161
output frequency so as to stabilize the controlled value at the position of the target value.
Suitable for flow control, pressure control and temperature control and other
process control applications.
Code
Parameter name
Setting range
Factory
setting
Change
limits
E2.00
PI D reference
source
E2.01 setting
0
0
☆`
Analog AI1 reference
1
Analog AI2 reference
2
Panel potentiometer
reference
3
High-speed pulse setting
4
Communications setting
5
Multi-stage command
setting
6
E2.01
PID keyboard
reference
0.0% to 100.0%
50.0%
☆
This parameter is used to select the process PID target value reference channel.
The set target value of process PID is a relative value, the setting range is from 0.0% to
100.0%. The feedback value of PID is also a relative value, the role of PID is to remain the
same for the two relative values.
E2.02
PID
feedback
source
Analog AI1 reference
0
0
☆
Analog AI2 reference
1
Panel potentiometer setting
2
AI1－AI2
3
High-speed pulse setting
4
Communications setting
5
AI1+AI2
6
MAX(|AI1|, |AI2|)
7
+
-
Target
amount
Feedback amount
PID
output control
amount
P
1
Td*s+1
1
Ti
1
S
Flow diagram of process PID principle