ES-5657 Rev.17

R1M-GH

Remote I/O R1M Series

THERMOCOUPLE & DC INPUT MODULE

(thermocouple or DC input, 16 points)
Functions & Features
• 16-point thermocouple or DC inputs
• Easy system expansion via Modbus RTU

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

ORDERING INFORMATION

• Code number: R1M-GH2T-[1][2]
Specify a code from below for each of [1] and [2].
(e.g. R1M-GH2T-M2/Q)
• Specify the specification for option code /Q
(e.g. /C01/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 (multiple selections)

COATING (For the detail, refer to our web site.)
/C01: Silicone coating
/C02: Polyurethane coating
/C03: Rubber coating
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 our 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
(Applicable wire size AWG24-12 (0.2 – 2.5 mm²), stripped
length 7 mm)
RS-232-C: 9-pin D-sub connector (male)
(Lock screw No. 4-40 UNC)
Input: M3 screw terminals (torque: 0.6N·m)
Screw terminal: Nickel-plated steel
Housing material: Flame-resistant resin (gray)
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 TIA/EIA-485-A
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
(Factory default setting: ±5 V)
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)

PERFORMANCE (% of measuring range)

Accuracy
DC input: ±0.3 %
Thermocouple input: See the table on the end of this section.
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 and T/C B (RH)
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength: 2000 V AC @ 1 minute (input to RS-232-C or RS-485 to power to FG)

STANDARDS & APPROVALS

EU conformity:
EMC Directive
EMI EN 61000-6-4
EMS EN 61000-6-2
Low Voltage Directive
EN 61010-1, EN 61010-2-201
Measurement Category II (output)
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