Analog pid reference signals, Analog pid reference signals . . . . . . . . . g-5, Examples scale function – Rockwell Automation 22D PowerFlex 40P User Manual, FRN 3 User Manual
Page 185: Invert function, Pid set up g-5
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PID Set Up
G-5
Analog PID Reference Signals
Parameters
[Anlg In 0-10V Lo] and
[Anlg In 0-10V Hi] are
used to scale or invert an analog PID Reference or PID Feedback.
Examples
Scale Function
For a 0-5 volt signal, the following parameter settings are used so that a 0
volt signal = 0% PID Reference and a 5 volt signal = 100% PID
Reference.
•
•
[Anlg In 0-10V Hi] = 50.0%
•
[PID Ref Sel] = 2 “0-10V Input”
Invert Function
For a 4-20mA signal, the following parameter settings are used so that a
20mA signal = 0% PID Reference and a 4mA signal = 100% PID
Reference.
•
[Anlg In4-20mA Lo] = 100.0%
•
•
[PID Ref Sel] = 3 “4-20mA Input”
0
10
20
30
40
50
60
70
80
90 100
PID Reference (%)
Input V
olts
2
4
6
8
10
12
0
10
20
30
40
50
60
70
80
90 100
PID Reference (%)
4-20mA
Input
4
8
12
16
20
24
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