Rockwell Automation 22C PowerFlex 400 AC Drive FRN 1.xx - 7.xx User Manual
Page 182
D-6
Application Notes
PowerFlex 400 Adjustable Frequency AC Drive FRN 1.xx - 7.xx User Manual
Publication 22C-UM001I-EN-P
Analog PID Reference Signals
Parameters
[Analog In 1 Hi],
[Analog In 2 Lo], and
[Analog In 2 Hi] are used to scale or invert
an analog PID Reference.
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.
•
[Analog In 1 Sel] or
[Analog In 2 Sel] = 2 “Voltage Mode
- Unipolar”.
•
[Analog In 1 Lo] or
[Analog In 2 Lo] = 0.0%
•
[Analog In 1 Hi] or
[Analog In 2 Hi] = 50.0%
•
[PID Ref Sel] = 0 “0-10V Input”
5 “ACT1 * ACT2”
Selects actual inputs
[ACT1 Input] multiplied by
[ACT2 Input] to be used as the feedback signal.
6 “ACT1 / ACT2”
Selects actual inputs
[ACT1 Input] divided by
[ACT2 Input] to be used as the feedback signal.
7 “Min A1, A2”
Selects the smaller of actual inputs
[ACT1 Input] or
[ACT2 Input] to be used as the feedback signal.
8 “Max A1, A2”
Selects the larger of actual inputs
[ACT2 Input] to be used as the feedback signal.
Option
Description
0 10 20 30 40 50 60 70 80 90 100
PID Reference (%)
Input V
olts
2
4
6
8
10
12