M-system R1M-GH2T Instruction Manual

MODEL: R1M-GH

R1M-GH SPECIFICATIONS ES-5657 Rev.11 Page 1/9

Remote I/O R1M Series

THERMOCOUPLE & DC INPUT MODULE

(16 points)
Functions & Features

• 16-point thermocouple or DC inputs

• Easy system expansion via Modbus RTU

40
(1.57)

115

(4.53)

mm (inch)

175 (6.89)

MODEL: R1M-GH2T-[1][2]

ORDERING INFORMATION

• Code number: R1M-GH2T-[1][2]
Specify a code from below for each [1] and [2].
(e.g. R1M-GH2T-M2/Q)

• Specify the specification for option code /Q
(e.g. /SET)

FIELD TERMINAL TYPE

T: M3 screw terminals

[1] POWER INPUT

AC Power

M2: 100 – 240 V AC (Operational voltage range 85 – 264 V,
47 – 66 Hz)

DC Power

R: 24 V DC

(Operational voltage range 24 V ±10 %, ripple 10 %p-p max.)

[2] OPTIONS

blank: none
/Q: With options (specify the specification)

SPECIFICATIONS OF OPTION: Q

EX-FACTORY SETTING

/SET: Preset according to the Ordering Information Sheet
(No. ESU-5657-A)

RELATED PRODUCTS

• Resistor module (model: REM3-250)

• R1X configurator software (model: R1CON)
Downloadable at M-System’s web site.

A dedicated cable is required to connect the module to the
PC. Please refer to the internet software download site or
the users manual for the PC configurator for applicable
cable types.

GENERAL SPECIFICATIONS

Connection
Power input, transmission: Euro type connector terminal
RS-232-C: 9-pin D-sub connector (male)
(Lock screw No. 4-40 UNC)
I/O: M3 screw terminals
Isolation: Input to RS-232-C or RS-485 to power
Node address setting: Rotary switch; 1 – F (15 nodes)
RUN indicator LED: Green light blinks in normal conditions.

COMMUNICATION

Baud rate: 38.4 kbps
Communication: Half-duplex, asynchronous, no procedure
Protocol: Modbus RTU
Refer to Modbus Protocol Reference Guide (EM-5650) for
supported functions.

■ RS-232-C
Standard: Conforms to RS-232-C, EIA
Transmission distance: 10 meters max.

■ RS-485
Standard: Conforms to RS-485, EIA
Transmission distance: 500 meters max.
Transmission media: Shielded twisted-pair cable (CPEV-S

0.9 dia.)

INPUT SPECIFICATIONS

Input: Thermocouple or DC input, 16 points
(Common negative for DC input)
Measuring Range:
±20 V, ±5 V, ±1 V, ±0.8 V, ±0.2 V, ±50 mV, ±10 mV
Input resistance: 300 kΩ
Thermocouple types: PR, K, E, J, T, B, R, S, C, N, U, L, P
Sampling rate: 100 millisec./16 points

• Trigger input: Dry contact; ON detected at ≤1.5 V
Sensing: Approx. 5 V DC @ 1 mA

INSTALLATION

Power consumption

•AC: Approx. 10 VA

•DC: Approx. 7 W
Operating temperature: -5 to +60°C (23 to 140°F)
Operating humidity: 30 to 90 %RH (non-condensing)
Mounting: Surface or DIN rail
Weight: 400 g (0.88 lb)

MODEL: R1M-GH

R1M-GH SPECIFICATIONS ES-5657 Rev.11 Page 2/9

PERFORMANCE (% of measuring range)

Cold junction compensation error: ±3°C or ±5.4°F max.
(at 20°C ±10°C or 68°F ±18°F)
Temp. coefficient: ±0.015 %/°C (±0.008 %/°F)
±0.05 %/°C (±0.03 %/°F) for 10 mV range
Accuracy
DC input: ±0.3 %
Thermocouple input: See the table on the end of this
section.
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength: 2000 V AC @ 1 minute (input to RS-232­C or RS-485 to power to FG)

Thermocouple Accuracy

T/C

USABLE RANGE

ACCURACY

°C °F (%)

(PR) 0 to 1770 32 to 3218 ±0.5*

1

K (CA) -270 to +1370 -454 to +2498 ±0.3
E (CRC) -270 to +1000 -454 to +1832 ±0.7

J (IC) -210 to +1200 -346 to +2192 ±0.7
T (CC) -270 to +400 -454 to +752 ±1.0
B (RH) 100 to 1820 212 to 3308 ±0.7*

2

R -50 to +1760 -58 to +3200 ±0.7*

1

S -50 to +1760 -58 to +3200 ±0.7*

1

C (

WRe 5-26

) 0 to 2320 32 to 4208 ±0.7

N -270 to +1300 -454 to +2372 ±0.5
U -200 to +600 -328 to +1112 ±0.5
L -200 to +900 -328 to +1652 ±0.3
P (

Platinel II

) 0 to 1395 32 to 2543 ±0.5

*1. ≥400°C or ≥752°F
*2. ≥700°C or ≥1292°F

The described accuracy may be partially not satised when
the temperature ranges below 0°C.

STANDARDS & APPROVALS

EU conformity:
EMC Directive
EMI EN 61000-6-4
EMS EN 61000-6-2
Low Voltage Directive
EN 61010-1
Installation Category II
Pollution Degree 2
Input or RS-232-C/RS-485 to power: Reinforced insulation
(300 V)
Input to RS-232-C/RS-485: Basic insulation (300 V)
RoHS Directive
EN 50581

MODEL: R1M-GH

R1M-GH SPECIFICATIONS ES-5657 Rev.11 Page 3/9

EXTERNAL VIEW

RS-485
Connector

Power Terminals

Node Address

Setting Rotary SW

Configurator
Jack

RUN Indicator
LED

RS-232-C
9-pin Connector

ABBR. PIN NO. EXPLANATION OF FUNCTION

BA (SD) 2 Transmitted Data
BB (RD) 3 Received Data
AB (SG) 5 Signal Common

CB (CS) 7 Clear to Send
CA (RS) 8 Request to Send

1 Not Used.
4 DO NOT connect. Connecting may
6 cause malfunctions.
9

1 5

6 9

■ RS-232-C INTERFACE

MODBUS WIRING CONNECTION

R1M

T1
T2
T3
T4

R1M

T1
T2
T3
T4

T1
T2
T3
T4

R1M

CONNECTO

R

RS-232-C

RS-485

*

1

*

1

*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.

*

2

FG

RS-485