INSTRUCTION MANUALDISCRETE OUTPUT MODULE(Do 32 points; open collector)

MODEL

R3-DC32A

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:
Discrete output 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 when
you 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 continuous
vibration. 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 drive
cable, 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.

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

MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPANEM-8374 Rev.5P. 1 / 3

R3-DC32ACOMPONENT IDENTIFICATION■ FRONT VIEW

■ SIDE VIEW

RUN LED

ERR LED• Connector PinAssignment
A112345678910111213141516

Output Status Indicator LEDs
Group Selector

BA

Output Connector
SW3B
14321ON

OutputHoldA B
20 20

■ STATUS INDICATOR LED
RUN 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: Green LED turns on in normal operating
conditions.
Output status indicator: Red LED; turns on with theoutput ON.

■ SIDE DIP SW• Output Hold: SW3-1
SW
SW3-1

OUTPUT HOLDOFF
HOLD (*)
OFFON(*) Factory setting
Note: Be sure to set unused SW3-2 through 3-4 to OFF.

■ GROUP SELECTOR
Switches the output status indicator.
A. 1 – 8: Do 11 – Do 18
9 – 16: Do 21 – Do 28
B. 1 – 8: Do 31 – Do 38
9 – 16: Do 41 – Do 48

TERMINAL CONNECTIONSConnect the unit as in the diagram below.
■ EXTERNAL DIMENSIONS unit: mm (inch)
109 (4.29)

POSITIONINGGUIDE130 (5.12)

27.5 (1.08)

MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPANEM-8374 Rev.5

P. 2 / 3

R3-DC32A

INTERNAL BUS A*INTERNAL BUS B

INTERNAL POWER

BUS CONNECTOR■ CONNECTION DIAGRAMOUTPUT CONNECTOR (40 pins)
1A Do 11

L

2A Do 12

L

3A Do 13

L

4A Do 14

L

5A Do 15

L

6A Do 16

L

7A Do 17

L

8A Do 18

L

9A COM124V DC

10A 24V DC_1PIN NO.
1A
2A
3A
4A
5A
6A
7A
8A
9A

ASSIGNMENTDo 11Do 12Do 13Do 14Do 15Do 16Do 17Do 18
COM1PIN NO.
1B
2B
3B
4B
5B
6B
7B
8B
9B

ASSIGNMENTDo 31Do 32Do 33
Do 34
Do 35
Do 36
Do 37
Do 38
COM310A
11A
12A
13A
14A
15A
16A
17A
18A
19A
20A

24V DC_1
Do 21Do 22Do 23Do 24
Do 25Do 26Do 27
Do 28
COM224V DC_2

10B
11B
12B
13B
14B
15B
16B
17B
18B
19B
20B

24V DC_3Do 41
Do 42Do 43
Do 44Do 45Do 46Do 47
Do 48
COM424V DC_411A Do 21

L

12A Do 22

L

13A Do 23

L

14A Do 24

L

15A Do 25

L

16A Do 26

L

17A Do 27

L

FUNCTIONS

18A Do 28

L■ OUTPUT HOLD or OUTPUT OFF
In normal conditions, the module outputs the signal fromthe preferred bus A.
When an error is detected, the output is switched to thedata from the bus B.
• Output Hold	
If both are in error, the module holds the signal andstands by until one of the communications recovers.
• Output OFF	If both are in error, the module outputs OFF signals andstands by until one of the communications recovers.	At the startup, it outputs OFF until the communication isestablished and normal data is received.

19A COM224V DC

20A 24V DC_2
1B Do 31

L

2B Do 32

L

3B Do 33

L

4B Do 34

L

5B Do 35

L

6B Do 36

L

7B Do 37

L

8B Do 38

L

9B COM324V DC

10B 24V DC_3
11B Do 41

L

12B Do 42

L

13B Do 43

L

14B Do 44

L

15B Do 45

L

16B Do 46

L

17B Do 47

L

18B Do 48

L

19B COM424V DC

20B 24V DC_4
*For dual redundant communication.

MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPANEM-8374 Rev.5

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