Rockwell Automation 22D PowerFlex 40P User Manual, FRN 3 - Manual (Page 185)

PID Set Up G-5
Analog PID Reference Signals
Parameters A110 [Anlg In 0-10V Lo] and A111 [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.
•
A110 [Anlg In 0-10V Lo] = 0.0%
•
A111 [Anlg In 0-10V Hi] = 50.0%
•
A132 [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.
•
A112 [Anlg In4-20mA Lo] = 100.0%
•
A113 [Anlg In4-20mA Hi] = 0.0%
•
A132 [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