MODEL: R1MS-GH3

R1MS-GH3 SPECIFICATIONS

ES-5671 Rev.12 Page 4/8

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

COMMUNICATION CABLE CONNECTIONS

R1M

T1

T2

T3

T4

R1M

T1

T2

T3

T4

T1

T2

T3

T4

R1M

RS-232-C

RS-485

*1. Internal terminating resistor is used when the device is at the end of a transmission line.

*2. Install shielded cables to all sections and ground them at single point.

FG

RS-485

CONNECTION DIAGRAM

RS-232-C

T3

T4

T2

T1

T7

T6

T5

Term.

Resist.

Control

Circuit

*1. When the device is located at the end of a transmission line via twisted-pair cable, (when there is

no cross-wiring), close across the terminal T2 – T3 with the attached jumper pin (or with a leadwire).

When the device is not at the end, remove the jumper pin.

*2. Separate sets of terminals for DC and TC are assigned to each channel, however, DO NOT

connect to both sets of terminals at once. Duplicate connection may affect measuring accuracies.

DC and TC can be mixed among eight channels.

Note 1: Be careful to eliminate noise as much as possible by e.g. using shielded cables.

Note 2: Be sure to earth the FG terminal and the cable shielding to a most stable earth point in the

environment.

Note 3: Resistor modules (model: REM3-250) can be used to convert current inputs into voltage.

However, use of REM3 is not recommended when TC inputs are mixed because the heat developed

on and around the REM3 affects the cold junction compensation performance.

+

–

+

–

ext. wire

ext. wire

ext. wire

ext. wire

ext. wire

ext. wire

ext. wire

ext. wire

Power

Circuit

+

–

Shielded Twisted-pair Cable

To Other

I/O Modules

Jumper *

1

FG

U (+)

V (–)

POWER

JACK

CONFIGURATOR

Isolated

Analog

Input 1

Isolated

Analog

Input 2

Isolated

Analog

Input 3

Isolated

Analog

Input 4

Isolated

Analog

Input 5

Isolated

Analog

Input 6

Isolated

Analog

Input 7

Isolated

Analog

Input 8

Isolated

Alarm

Output

Isolated Trigger Input

*2

+

–

T/C

INPUT 1

DC

20

19

22

21

24

23

26

25

28

27

30

29

32

31

34

33

36

35

2

1

4

3

6

5

8

7

10

9

12

11

14

13

16

15

18

17

+

–

+

–

+

–

T/C

INPUT 2

DC

+

–

+

–

+

–

T/C

INPUT 3

DC

+

–

+

–

+

–

T/C

INPUT 4

DC

+

–

+

–

+

–

T/C

INPUT 5

DC

+

–

+

–

+

–

T/C

INPUT 6

DC

+

–

+

–

+

–

T/C

INPUT 7

DC

+

–

+

–

+

–

+

–

T/C

INPUT 8

DC

ALARM OUTPUT

TRIGGER INPUT

Caution: FG terminal is NOT a protective conductor terminal.