MODEL: R3-DS4

R3-DS4 SPECIFICATIONS

ES-8368 Rev.12 Page 3/4

https://www.m-system.co.jp/

EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]

1

11

12

13

14

15

16

17

18

19

20

2

3

4

5

6

7

8

9

10

27.5 [1.08]

109 [4.29]

POSITIONING

GUIDE

TERMINAL

COVER

20–M3

SCREW

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM

INPUT 1

250Ω

11

1

12

+

–

2

–

CURRENT INPUT

+

2W-XMTR (EXC)

INTERNAL POWER

*For dual redundant communication.

Control

Circuit

Communication

Circuit

Excitation

Supply

Input Circuit

INPUT 2

250Ω

13

3

14

+

–

4

–

CURRENT INPUT

+

2W-XMTR (EXC)

Excitation

Supply

Input Circuit

INPUT 3

250Ω

16

6

17

+

–

7

–

CURRENT INPUT

+

2W-XMTR (EXC)

Excitation

Supply

Input Circuit

INPUT 4

250Ω

18

8

19

+

–

9

15

5

20

10

–

CURRENT INPUT

+

2W-XMTR (EXC)

Excitation

Supply

Input Circuit

DIP SW

RUN LED ERR LED

1

2

INPUT 1

3

4

INPUT 2

6

7

INPUT 3

8

9

INPUT 4

5kΩ (0.5W)

• Unused Input Channels

Close across the unused input terminals with a resistor (5kΩ, 0.5W) as shown below.

Unused channels left open are equal to the input lower than -15%, which sets a data abnormality

at the PLC or the host device.

Unused channels can be specified and set so on the PC Configurator Software (model: R3CON)

without needing to connect resistors at the field terminals.

INTERNAL BUS A

INTERNAL BUS B*