Rockwell Automation 22C PowerFlex 400 AC Drive FRN 1.xx - 7.xx - 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 T070 [Analog In 1 Lo], T071 [Analog In 1 Hi], T074
[Analog In 2 Lo], and T075 [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.
•
T069 [Analog In 1 Sel] or T073 [Analog In 2 Sel] = 2 “Voltage Mode
- Unipolar”.
•
T070 [Analog In 1 Lo] or T074 [Analog In 2 Lo] = 0.0%
•
T071 [Analog In 1 Hi] or T075 [Analog In 2 Hi] = 50.0%
•
A152 [PID Ref Sel] = 0 “0-10V Input”
5 “ACT1 * ACT2” Selects actual inputs A204 [ACT1 Input] multiplied by A205
[ACT2 Input] to be used as the feedback signal.
6 “ACT1 / ACT2” Selects actual inputs A204 [ACT1 Input] divided by A205
[ACT2 Input] to be used as the feedback signal.
7 “Min A1, A2” Selects the smaller of actual inputs A204 [ACT1 Input] or A205
[ACT2 Input] to be used as the feedback signal.
8 “Max A1, A2” Selects the larger of actual inputs A204 [ACT1 Input] or A205
[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