MODEL: R8-FST4N
Remote I/O R8 Series

for applicable cable types.

DC VOLTAGE/CURRENT INPUT MODULE

GENERAL SPECIFICATIONS(built-in excitation, 4 points, non-isolated)
Functions & Features• DC current input and DC voltage input compact size
remote I/O module• Switching between current input and voltage input withPC configurator (model: R8CFG)• Accepts direct input from power output as sensor power
and outputs from terminals• Each channel is atachable/detachable independently withseparable tension clamp terminal.

Connection• Input: Tension clamp• Excitation supply, internal bus:
Connected to internal bus connector• Internal power: Via bus connector
Isolation: Input or exc. supply to internal bus or internal
power
Input type: Configuration mode that selectable between
current input and voltage input and available to configure
scaling individually for each 4 points with configurator
software (model: R8CFG) and fixed input mode that
selectable between 0 - 10 V DC and 4 - 20 mA DC
individually for each 4 points are available.
Module address: With rotary switch
Terminating resistor: Built-in (DIP Switch, default: disable)
Status indicator: Bi-color (red/green) LED; Refer to theinstruction manual.
Input status indicators: Red LED; Refer to the instruction
manual.

12 [.47]

115 [4.53]

73 [2.87]

INPUT SPECIFICATIONS

mm [inch]

MODEL: R8-FST4N[1]ORDERING INFORMATION• Code number: R8-FST4N[1]Specify a code from below for [1].
(e.g. R8-FST4N/Q)• Specify the specification for option code /Q(e.g. /C01)[1] OPTIONS
blank: none
/Q: With options (specify the specification)

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

RELATED PRODUCTS• PC configurator software (model: R8CFG)
The configurator software is downloadable at our web site.
A dedicated cable is required to connect the module to thePC. Please refer to the users manual for the PC configurator■ DC Voltage:• Configuration mode
Input range: -10 – +10 V DC
Input setting value: Available to set in the input range
Operational range: -5 - +105 % (% of input setting value)
Input resistance: ≥ 1 MΩ• Fixed input mode
Input range: 0 – 10 V DC
Input setting value: Available to set in the input range
Operational range: -5 - +105 % (% of input setting value)
Input resistance: ≥ 1 MΩ■ DC Current:• Configuration mode
Input range: -20 – +20 mA DC
Input setting value: Available to set in the input range
Operational range: -5 - +105 % (% of input setting value)
Input resistance: 50 Ω (1/4 W)• Fixed input mode
Input range: 4 – 20 mA DC
Input setting value: Available to set in the input range
Operational range: -5 - +105 % (% of input setting value)
Input resistance: 50 Ω (1/4 W)
Factory default (Input type and input setting value):
Voltage input, input range -10 - +10 V DC for all 4 points.

R8-FST4N SPECIFICATIONS

MG CO., LTD.
www.mgco.jp

ES-9694 Rev.2 Page 1/5

MODEL: R8-FST4N
INSTALLATION
Max. current consumption: 100 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 railWeight: 80 g (0.18 lb)

PERFORMANCE
Conversion accuracy (in percentage of input range)
Voltage input:±0.05 %Current input:±0.1 %Conversion accuracy is inversely proportional to input span.
Conversion rate: 8 msec.
Input circuit time constant: Approx. 1 msec.
Data range: 0 – 10000 of the input range(Scaling of converted data is configurable with theconfigurator software)
Data allocation: 2
Module addresses in use: 2
Power output (input connector): Rated current 0.5 A DC perchannel (rated current 3 A for internal fuse (slow blow fusei2t (A2sec.) max. 5.04); Total: 1 A DC
Temp. coefficient: ±0.015 %/°C (±0.008 %/°F)
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength: 1500 V AC @ 1 minute(input or exc. supply to internal bus or internal power toground)

CALCULATION EXAMPLES OF CONVERSION ACCURACY■ Voltage input:
For input setting value 1 - 5 V DC
Conversion accuracy = Input range span (20 V) ÷ input
setting value span (4 V) × 0.05 (%) = 0.25 (%)■ Current input:
For input setting value 4 - 20 mA DC
Conversion accuracy = Input range span (40 mA) ÷ input
setting value span (16 mA) × 0.1 (%) = 0.25 (%)(Span is common for configuration mode and fixed inputmode)

STANDARDS & APPROVALS
EU conformity:
EMC Directive
EMI EN 61000-6-4
EMS EN 61000-6-2
RoHS Directive

R8-FST4N SPECIFICATIONS

MG CO., LTD.
www.mgco.jp

ES-9694 Rev.2 Page 2/5

MODEL: R8-FST4N
EXTERNAL VIEW
■ RIGHT VIEW

Module Address Setting
Rotary SWStatus
Indicator LED784567878456

23×102390190123Input StatusIndicator LEDs

23RUN901

901

SW178

■ FRONT VIEW

456

■ LEFT VIEW

SW2

CARD ADD. ×1456

Internal BusConnector

Input Range
Selectors

InputConnectors

OnSW412345678

OnTermSW3On

Terminator
DIP SW

1234
SW5

Input Range
Selectors

WIRING• TENSION CLAMP
Unit side connector: Tension clamp
Cable side connector: DFMC1,5/2-ST-3,5 (Phoenix Contact)(included in the package)
Applicable wire size: 0.2 - 1.5 mm2Stripped length: 10 mm
Recommended solderless terminal• AI0,25-10YE 0.25 mm2 (Phoenix Contact)• AI0,34-10TQ 0.34 mm2 (Phoenix Contact)• AI0,5-10WH 0.5 mm2 (Phoenix Contact)• AI0,75-10GY 0.75 mm2 (Phoenix Contact)• A1-10 1.0 mm2 (Phoenix Contact)• A1,5-10 1.5 mm2 (Phoenix Contact)

12AG

Ai 1
3424V
50V
6Ai 2
7AG
824V
90V
10Ai 3
1124V
13

Ai 4
1524V

AG
120V
14AG
160V

PIN
No.
12345678910111213141516ID

FUNCTIONAi 1AG
24V0V
Ai 2AG24V0V
Ai 3
AG24V0V
Ai 4AG
24V0V

Input 1 (+)
Input 1 (−)
Excitation supply (+)
Excitation supply (−)
Input 2 (+)
Input 2 (−)
Excitation supply (+)
Excitation supply (−)
Input 3 (+)
Input 3 (−)
Excitation supply (+)
Excitation supply (−)
Input 4 (+)
Input 4 (−)
Excitation supply (+)
Excitation supply (−)

R8-FST4N SPECIFICATIONS

MG CO., LTD.
www.mgco.jpES-9694 Rev.2 Page 3/5

MODEL: R8-FST4N
OPERATING MODE SETTING(*) factory default setting
Note: Be sure to set unused SW4-5 through 4-7 to OFF.
■ Module Address
The left switch determines the tenth place digit, while theright one does the ones place digit of the module address.
Address is selected between 0 to 30.
(Factory setting: 0)9017 823456

237 8901456

Module Address Setting (x1)
Module Address Setting (x10)■ Terminator DIP SW

TERMINATOR SW

SW3OFFON

Without (*)
With■ Input Setting
INPUT SETTING
Configuration mode
Fixed input mode

Voltage input (*)
Current input
Voltage input 0 – 10V DC
Current input 4 – 20mA DC

INPUT 1
INPUT 2
INPUT 3
INPUT 4SW4-1 SW5-1 SW4-2 SW5-2 SW4-3 SW5-3 SW4-4 SW5-4
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON
ONON

MODE
SW4-8
ON
ON
OFF
OFF

12 [.47] (3 [.12])

73 [2.87](4 [.16])55 [2.17]

6 [.24]7 [.28]EXTERNAL DIMENSIONS unit: mm [inch]

7 [.28]6 [.24]

115 [4.53]

DIN RAIL(35mm wide)

R8-FST4N SPECIFICATIONS

MG CO., LTD.
www.mgco.jp

ES-9694 Rev.2 Page 4/5

MODEL: R8-FST4N
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAMSTATUS
INDICATOR INPUT STATUS
INDICATOR LEDLED*1INPUT CONNECTOR 1Ai 11AG224V

3+24V

EXC. SUPPLYIsolation
ControlCircuit

Comm.
Circuit

INPUT 1SETTINGSW

40V

PowerCircuit

0V

CONNECTOR+24V

INTERNAL BUS

INTERNAL POWERINPUT CONNECTOR 2Ai 25AG

624V

70V

8INPUT 2Input A/DConverter

INPUT CONNECTOR 3Ai 39AG

1024V

110V

12INPUT 3INPUT CONNECTOR 4Ai 413AG

1424V

150V

16INPUT 40V*1. Fuse is not replaceable.

Specifications are subject to change without notice.

R8-FST4N SPECIFICATIONS

MG CO., LTD.
www.mgco.jp

ES-9694 Rev.2 Page 5/5