3 WIRING OF A PLUG-IN OPTION AND MOTOR WITH ENCODER. Mitsubishi Electric FR-A7PS

3

WIRING OF A PLUG-IN OPTION AND MOTOR WITH ENCODER

3.1

Connection diagram

When using 12VDC power for encoder of this option, connect terminal PG12 and terminal PG of a plug-in option FR-A7AP or FR-A7AL with an enclosed connection cable.

<Wiring example of the FR-A7AP>

SW2

LED1

LED2

LED3

Option slot 1

For installation of FR-A7AP

SW1

PG

Option slot 2

Connection cable for

FR-A7AP and FR-A7AL

Option slot 3

PG12

FR-A7PS

CAUTION

When terminal PG12 and terminal SD are shorted, power is not supplied to the encoder. Therefore, a signal from the encoder can not be received (fault display due to terminal short circuit is not output). Operating the inverter in such status may activate stall prevention (OL), activating protective function such as overcurrent shutoff (E.OC

† ) and electronic thermal relay function (E.THT, E.THM).

In addition, it could cause the inverter to fail.

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3

WIRING OF A PLUG-IN OPTION AND MOTOR WITH ENCODER

<Wiring example of the FR-A7AP>

Three-phase AC power supply

MCCB

Inverter

External thermal relay input

PC

CS(OH)

SD

FR-A7AP

PA1

PA2

U

V

W

2W1k

Ω

E

Earth

(ground)

U

V

W

G1

G2

Differential line driver

PB1

PB2

PZ1

PZ2

Complimentary

Terminating resistor

ON

PG

SD

PG

SD

A

B

F

G

C

D

S

R

A

B

C

SF-V5RU, SF-THY

FAN

Thermal protector

IM

Encoder

OFF

12V

PG12

SD

Enclosed connection cable

REMARKS y Since terminal SDs are connected inside the inverter, it is not necessary to connect this option and terminal SD of the plug-in option FR-A7AP or FR-A7AL.

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