MODEL: R8-DCT4D
Remote I/O R8 Series

GENERAL SPECIFICATIONSRELAY OUTPUT MODULE(4 points, Tension clamp terminal block)
Functions & Features• 4 channels for relay output, compact size remote I/Omodule• 8 pins tension clamp connector
24 (.94)

115 (4.53)

Connection• Output: Tension clamp
Applicable wire size: 0.2 - 2.5 mm2Stripped length: 10 mm• Excitation supply, internal bus:
Connected to internal bus connector• Internal power: Via bus connector
Isolation: Output 1 to output 2 to output 3 to output 4 toexc. supply to internal bus or internal power
Module address: With DIP switch
Output at the loss of communication: Selectable with theside DIP SW
Terminating resistor: Built-in (DIP Switch, default: disable)
Status indicator: Bi-color (red/green) LED; Refer to the
instruction manual.
Discrete output status indicators: Green LED; Refer to the
instruction manual.

73 (2.87)
mm (inch)

OUTPUT SPECIFICATIONS
Output: Relay contact 4 points
Output common: Common per one point (4 terminals)
Maximum load current: 2 A per point
Rated load: 250 V AC @2 A (cos ø = 1)30 V DC @2 A (resistive load)
Maximum switching voltage: 250 V AC or 30 V DC
Maximum switching power: 500 VA or 60 W
Minimum load: 5 V DC @1 mA
Mechanical life: 2 × 107 cycles (rate 300/min.)
When driving an inductive load, external contact protection
and noise quenching are recommended.
ON delay: ≤ 10 msec.
OFF delay: ≤ 10 msec.

MODEL: R8–DCT4D[1]ORDERING INFORMATION• Code number: R8-DCT4D[1]Specify a code from below for [1].
(e.g. R8-DCT4D/Q)• Specify the specification for option code /Q(e.g. /C01)[1] OPTIONS
blank: none
/Q: With options (specify the specification)

INSTALLATION
Max. current consumption: 100 mA
Exc. supply current consumption: 40 mA
Operating temperature: -10 to +55°C (14 to 131°F)
Operating humidity: 30 to 90 %RH (non-condensing)
Atmosphere: No corrosive gas or heavy dust
Mounting: DIN rail
Weight: 120 g (0.26 lb)

SPECIFICATIONS OF OPTION: Q
COATING (For the detail, refer to our web site.)/C01: Silicone coating/C02: Polyurethane coating

RELATED PRODUCTS• PC configurator software (model: R8CFG)Downloadable at our web site.
A dedicated cable is required to connect the module to thePC. Please refer to the internet software download site orthe users manual for the PC configurator for applicable
cable types.

PERFORMANCE
Data allocation: 1
Module addresses in use: 1
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength:1500 V AC @ 1 minute (output 1 to output 2 to output 3 tooutput 4 to exc. supply to internal bus or internal power toground)

R8-DCT4D SPECIFICATIONS

MG CO., LTD.
www.mgco.jp

ES-9798 Rev.2 Page 1/4MODEL: R8-DCT4D
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 2Output to exc. supply or internal bus or internal power:
Basic insulation (250 V)
RoHS Directive

EXTERNAL VIEW
■ FRONT VIEW

■ SIDE VIEW
Status Indicator LED
RUN
1234

DIP SW

Discrete Output
Status Indicator LED

SW1Internal Bus Connector

87654321On

SW2Output Connectors
Do18R8-DCT4D SPECIFICATIONS

MG CO., LTD.
www.mgco.jp

ES-9798 Rev.2 Page 2/4

MODEL: R8-DCT4D
OPERATING MODE SETTING(*) Factory setting
Caution ! - SW2-1 through 2-7 are unused. Be sure to turnoff unused ones.
■Module Address
SW1-1 through 1-4 determine the tenth place digit, while
SW1-5 through 1-8 do the ones place digit of the moduleaddress.
Address is selected between 0 to 31.
(Factory setting: 0)
MODULE ADDRESS

×10×1012345678915OFFOFF
OFF
OFFOFF
OFF
OFF
OFF
ON
ON

SW126OFFOFF
OFF
OFFON
ON
ONON
OFFOFF

37OFFOFFONONOFFOFFONONOFFOFF

48OFFON
OFFON
OFFON
OFFON
OFFON

■ Output at the Loss of Communication
OUTPUT AT THE LOSS OF COMMUNICATION

SW25Output Hold (*)(last data correctly received is hold)OFF

Stop output (Output fixed at OFF)ON

■ Terminator DIP SW
TERMINATOR SW
Without (*)
With

SW26OFFON■ Configuration Mode
CONFIGURATION MODE
DIP switch setting (*)
PC Configurator and communication

SW28OFFON

R8-DCT4D SPECIFICATIONS

MG CO., LTD.
www.mgco.jpES-9798 Rev.2 Page 3/4

MODEL: R8-DCT4D7 (.28)

DIMENSIONS unit: mm (inch)
24 (.94)73 (2.87)[3 (.12)][4 (.16)]6 (.24)55 (2.17)

7 (.28)6 (.24)115 (4.53)

DIN RAIL(35 mm wide)

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM

INTERNAL BUS

INTERNAL POWER

BUS CONNECTORSTATUS
LED

Comm.
CircuitOUTPUTSTATUS LED+24V

Isolation

Ry

ControlCircuit

1

OUTPUT
CONNECTORDo 12RyDIP SW+24V

3Output
Circuit

EXC. SUPPLY

Do 2
Ry0V

45Do 3Ry

67Do 480V

Specifications are subject to change without notice.

R8-DCT4D SPECIFICATIONS

MG CO., LTD.
www.mgco.jp

ES-9798 Rev.2 Page 4/4