Wiring Examples. Mitsubishi Electric FR-A7AP, FR-A740-0.4K

4

ENCODER FEEDBACK CONTROL

Encoder feedback control is enabled when the FR-A7AP is mounted on the FR-A700 series. (under V/F control, advanced magnetic flux vector control)

This controls the inverter output frequency so that the motor speed is constant to the load variation by detecting the motor speed with the speed detector (encoder) to feed back to the inverter.

4.1

Wiring Examples

Three-phase

AC power supply

Forward rotation start

Reverse rotation start

Contact input common

Frequency setting potentiometer

MCCB

R/L1

Inverter

S/L2

T/L3

10

2

5

STF

STR

SD

FR-A7AP

PA1

PA2

Differential

PB1

PB2

Complimentary

Terminating resistor ON

*4

PG

SD

PG

SD

*5

OFF

U

V

W

SF-JR motor with encoder

U

V

W

IM

E

Earth

(Ground)

C *1

R

A

N

Encoder

H

K

*2

*3

(+) (-) 5VDC power supply *6

24