INSTRUCTION MANUAL

RTD INPUT MODULE

MODEL(8 points, isolated)

R3-RS8

BEFORE USE ....

POINTS OF CAUTION

Thank you for choosing us. Before use, please check contents of the package you received as outlined below.
If you have any problems or questions with the product,
please contact our sales office or representatives.

■ CONFORMITY WITH EU DIRECTIVES• The equipment must be mounted inside the instrument
panel of a metal enclosure.
• The actual installation environments such as panel configurations, connected devices, connected wires, may affect the protection level of this unit when it is integrated
in a panel system. The user may have to review the CE
requirements in regard to the whole system and employ
additional protective measures to ensure the CE conformity.

■ PACKAGE INCLUDES:
RTD input module................................................................(1)■ MODEL NO.
Confirm Model No. marking on the product to be exactly
what you ordered.
■ INSTRUCTION MANUALThis manual describes necessary points of caution whenyou use this product, including installation, connection andbasic maintenance procedures.

■ HOT SWAPPABLE MODULES• Replacing the module does not affect other modules on
the same base. Thus, the module can be replaced while
the power is ON. However, replacing multiple modules
at once may greatly change live voltage levels. We highly
recommend to replace them one by one.
■ GENERAL PRECAUTIONS• DO NOT set the switches on the module while the poweris supplied. The switches are used only for maintenancewithout the power.
■ ENVIRONMENT• Indoor use.
• When heavy dust or metal particles are present in theair, install the unit inside proper housing with sufficientventilation.
• Do not install the unit where it is subjected to continuousvibration. Do not subject the unit to physical impact.
• Environmental temperature must be within -10 to +55°C(14 to 131°F) with relative humidity within 30 to 90% RH
in order to ensure adequate life span and operation.
■ WIRING• Do not install cables close to noise sources (relay drivecable, high frequency line, etc.).
• Do not bind these cables together with those in which
noises are present. Do not install them in the same duct.
■ AND ....
• The unit is designed to function as soon as power is supplied, however, a warm up for 10 minutes is required forsatisfying complete performance described in the datasheet.

INSTALLATION
Use the Installation Base (model: R3-BSx).

MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPANEM-8365 Rev.6

P. 1 / 4

R3-RS8COMPONENT IDENTIFICATION■ SIDE VIEW

■ FRONT VIEW
RUN LED
15ERR LED
Functions
SW112
3
45678

SW212345678ON

16171819

SW3RTD
Input 1-4 (SW1)orInput 5-8 (SW2)1234ONBurnout
Temp.
UnitConv.
Rate

20212223242526ON2728■ SIDE DIP SW(*) Factory setting• RTD Type: SW1, SW2 (selectable per 4 channels)
INPUT 1 through INPUT 4 (SW1)
INPUT 5 through INPUT 8 (SW2)
1234

RTD

OFF

OFF

OFF

OFF

ON

OFF

OFF

OFF

OFF

ON

OFF

OFF

ON

ON

OFF

OFF

OFF
ON
OFF

OFF
OFF
OFF

ON
ON
OFF

OFF
OFF
ON

Pt 100 (*)(JIS ’97, IEC)
Pt 100(JIS ’89)
JPt 100(JIS ’89)
Pt 50Ω(JIS ’81)
Ni 100
Cu 10 @ 25°C
Cu 50

1234567891011121314■ STATUS INDICATOR LEDRUN indicator: Bi-color (red/green) LED;
Red when the bus A operates normally;
Green when the bus B operates normally;
Amber when both buses operate normally.
ERR indicator: Bi-color (red/green) LED;
Red with burnout;
Green in normal operating conditions.

• Burnout: SW3-1
SW3-1
OFFON

BURNOUT
Upscale (*)
Downscale• Temperature Unit: SW3-2, 3-3
SW3-2
OFFON
OFF

SW3-3
OFFOFFON

TEMP. UNIT°C(*)°F
K (Absolute Temp)• Conversion Rate: SW3-4
SW3-4
OFFON

CONV. RATE
250 msec. (*)
1 sec.

Note: Be sure to set unused SW1-5 through 1-8 and SW2-5
through 2-8 to OFF.

MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPANEM-8365 Rev.6

P. 2 / 4

R3-RS8PC CONFIGURATOR
With configurator software, settings shown below are available.
Refer to the software manual of R3CON for detailed operation.
■ CHANNEL INDIVIDUAL SETTING
PARAMETER
Zero Scale
Full Scale
Zero Adjust
Full Adjust
Zero Base
Full Base
UnusedAVAILABLE RANGE-32000 to +32000-32000 to +32000-320.00 to +320.00-32000 to +32000
Depends on sensor type
Depends on sensor type
0: Enable
1: Disable

DEFAULT SETTING
0100000.00
1.00000.00
0.00
0: Enable

AVAILABLE RANGENo check mark: Limits to the scaling values equivalent
to -15 % to +115 %.
Check-marked: Limits within Zero Scale to Full Scale.

DEFAULT SETTINGNo check mark

■ CHANNEL BATCH SETTING
PARAMETERLimit

TERMINAL CONNECTIONSConnect the unit as in the diagram below.
■ EXTERNAL DIMENSIONS unit: mm (inch)
27.5 (1.08)

161718130 (5.12)

1920
21
2223
2425
262728POSITIONING
GUIDE

123456728–M3SCREW

891011126.2(.24)

15109 (4.29)

1314TERMINAL
COVER

MG CO., LTD. www.mgco.jp5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPANEM-8365 Rev.6P. 3 / 4R3-RS8■ CONNECTION DIAGRAM• Unused Input Channels

INPUT 1A

1B

2

INTERNAL BUS A
INTERNAL BUS B*

Close scross the unused input terminals with a resistor as shown
below and set the DIP switch for an RTD.
INPUT 1

INPUT 2

INPUT 3INPUT 4147102581136912INPUT 5INPUT 6

INPUT 7INPUT 815182124B

3A

4B

5B

6A

716192225B

817202326B

9A

10B

11B

12A

15B

16WIRING INSTRUCTIONS

B

17A

18

■ SCREW TERMINALTorque: 0.5 N·mB

19B

20A

21B

22B

23A

24B

25B

26RTD
INPUT 2

BUS CONNECTORRTD

INTERNAL POWER

RTD
INPUT 3RTD
INPUT 4

The resistance value must match the RTD type (100Ω for Pt 100,
50Ω for Pt 50Ω).
Unused channels left open are equal to the burnout, which turns
the red ERR LED on and sets a burnout flag at the PLC or the hostdevice.
Unused channels can be specified and set so on the PC
Configurator Software (model: R3CON) without needing to connect
resistors at the field terminals.

RTD

RTD
INPUT 6RTD
INPUT 7

■ SOLDERLESS TERMINAL
Refer to the drawing below for recommended ring tongue
terminal size. Spade tongue type is also applicable. Solderless terminals with insulation sleeve do not fit.
Applicable wire size: 0.3 – 0.5 mm2
Recommended manufacturer: Japan Solderless Terminal
MFG. Co., Ltd., Nichifu Co., Ltd.

RTD
INPUT 8*For dual redundant communication.

MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN

3max

4min
3.2 dia.

6max

INPUT 512max(mm)

EM-8365 Rev.6

P. 4 / 4