Instruction Manual

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

0102030405060708090100

PID Reference (%)

Input Volts