INSTRUCTION MANUALCURRENT LOOP SUPPLY INPUT MODULE, 4 points MODEL R7C-DS4N(CC-Link V.1.10; non-isolated)

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.
* For example, installation of noise filters and clamp filters for the power source, input and output connected tothe unit, etc.
• Install lightning surge protectors for those wires connected to remote locations. Choose a surge protector with its
maximum surge voltage 40V or less between lines. Recommended model: MDP-D24.

■ PACKAGE INCLUDES:
Current loop supply input module......................................(1)Terminating resistor (110 Ω, 0.5 W)....................................(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.
■ CSP+ file
CSP+ file is downloadable at our web site.

■ POWER INPUT RATING & OPERATIONAL RANGE• Locate the power input rating marked on the product andconfirm its operational range as indicated below:		 24V DC rating: 24V ±10%, approx. 70mA
■ GENERAL PRECAUTIONS• Before you remove the unit or mount it, turn off the power
supply and input signal for safety.
• Before you remove the terminal block or mount it, makesure to turn off the power supply and input signal forsafety.
• 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.
• Be sure to close the terminal cover for safety.
■ 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.

MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPANEM-7801-BA Rev.2

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R7C-DS4NCOMPONENT IDENTIFICATION

23901

5612

• Conversion Rate / Accuracy: SW1-3, 1-4

CNFG.

SW1-3 SW1-4
OFFOFFONOFFOFFONONON45623456

STATION ADD.

4(E)

78

X145678SD(D)1 2 3 4 5 6 7 8X1078RUNRD

23ERR

(C)

901

PWR

(B)

901

(A)

B.RATE710 11 12 13 14 15 16 17 183123456789CONVERSION RATE / ACCURACY
80 msec. / ±0.1% (*)
40 msec. / ±0.2%
20 msec. / ±0.4%
10 msec. / ±0.8%■ POWER SUPPLY, CC-LINK TERMINAL ASSIGNMENT
4(F)

(G)

(A) Status Indicator LED *1(B) Station Address Setting Rotary SW(C) Baud Rate Setting Rotary SW(D) Operating Mode Setting DIP SW (SW1)(E) PC Configurator Jack(F) CC-Link, Power Supply Terminals(G) Input Terminals*1. Refer to ‘Status Indicator LED’ section for detailed information.

■ STATUS INDICATOR LEDID
PWR

COLOR FUNCTION
Red
Turns on when the internal 5V is supplied normally.
Red
Turns on when the refresh data is received normally.
Red
Turns on when the received data isabnormal.
Red
Turns on when the module is transmitting.
Red
Turns on when the module is receiving.

RUNERRSDRD■ STATION ADDRESS
Station Address is selected between 1 and 64 in decimal.
The left switch determines the tenth place digit, while theright switch does the ones place digit of the address.
23237878901

Station Address Setting (x1)567
DG +24V 0V
23DBSLD
FGID
DBSLD
FG
DA
DG
+24V0VFUNCTION, NOTESWhiteShield
FG
Blue
Yellow
Power input (24V DC)
Power input (0V)

■ INPUT TERMINAL ASSIGNMENT
10SNSR
EXC＋1SNSR
EXC−112

L012131415

160 : 156 kbps
1 : 625 kbps
2 : 2.5 Mbps
3 : 5 Mbps
4 : 10 Mbps

7823456

I1NCI2NCI33456789COML1ID

1SNSR
Exc. supply EXC-2L03COM Common

4L15COM Common

6L27COM Common

8L39COM Common

901

Baud Rate Setting■ OPERATING MODE(*) Factory setting• Extension: SW1-1, 1-2
SW1-1 SW1-2
OFFOFFON
OFF
OFF
ON

EXTENSION
No extension (*)
Discrete input, 8 or 16 points
Discrete output, 8 or 16 points

18NC

FUNCTION

COM

L2NO.

COMID

L3NC

COM

FUNCTION

SNSR
Exc. supply +EXC+
Supply for
Supply for
11 I0 2-wire transmitter -0/2-wire transmitter +0
Current input +01012NC

UnusedSupply for
132-wire transmitter +1

I1

Supply for
2-wire transmitter -1/
Current input +1

14

NC

UnusedSupply for
152-wire transmitter +2

I2

Supply for
2-wire transmitter -2/
Current input +2

16NC

UnusedSupply for
172-wire transmitter +3

I3

Supply for
2-wire transmitter -3/
Current input +3

Station Address Setting (x10)■ BAUD RATEBaud Rate is selected with the rotary switch.

17I0NO.

456

901

456NO.
12
3
4
567DA
118NC Unused■ EXTENSION MODULE
Combinations with all extension modules are selectable.

MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPANEM-7801-BA Rev.2

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R7C-DS4N

INDICATOR LED■ STATUS INDICATOR LED
PWR

RUN

ERR

SD *1

RD

ON
ON

ON
ON

BL
BL

BL
BL

ON
ON

ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON

ON
ON
ON
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF

BL
BL
BL
OFF
OFF
OFF
OFF
BL
BL
BL
BL
OFF
OFF
OFF

ON
ON
OFF

OFF
OFF
OFF

OFF
ON
OFF

STATUS *2

Communicates normally with occasional CRC errors due to noise interference.
Communicates normally but the Baud Rate and/or Station Address switches failed.
ERR LED blinks approximately in 0.5 seconds intervals.
BLOFF ---OFF ON CRC error detected in the received data. Unable to respond.
OFF OFF ---BLON Normal communication
BLOFF ---OFF ON Unable to receive data addressed to the station.
OFF OFF ---BLON Polling response is made but CRC error is detected in received refresh data.
BL
OFF ---OFF ON CRC error detected in the data addressed to the station.
OFF OFF ---BLON Link is not started.
BLOFF ---OFF ON No data addressed to the station. Or unable to receive data addressed to the station
due to noise interference. (Missing parts of the data sent from the master)OFF OFF Unable to receive data due to wire breakdown
OFF ON/OFF Faulty Baud Rate and/or Station Address setting
OFF OFF Power input removed or power supply failure.

OFF = OFF, ON = ON, BL = Blinking*1. SD LED which is blinking may appear to be ON with high baud rate especially when fewer modules are connected.
*2. LED combinations indicated with “----” do not occur in normal operation unless LED failure or the like occurs.

PC CONFIGURATOR
The following parameter items can be set with using PC Configurator Software (model: R7CON).
Refer to the users manual for the R7CON for detailed operation of the software program.
■ INTERFACE SETTING
PARAMETER
Communication Timeout

SETTING RANGE
0.0 – 3276.7 (sec.)

DEFAULT SETTING
3.0 (sec.)■ CHANNEL INDIVIDUAL SETTING
PARAMETER
Zero scale
Full scale
BiasGain

SETTING RANGE-32000 to +32000-32000 to +32000-320.00 to +320.00-3.2000 to +3.2000

DEFAULT SETTING
0100000.00
1.0000■ EXTENSION MODULE SETTING
PARAMETER
Output Hold/Clear

SETTING RANGE
Output Hold
Output Clear

DEFAULT SETTING
Output HoldMG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPANEM-7801-BA Rev.2

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R7C-DS4NTERMINAL CONNECTIONSConnect the unit as in the diagram below.
■ EXTERNAL DIMENSIONS unit: mm (inch)
115 (4.53)

54 (2.13)

18.5 (.73)

17 (.66)

50 (1.97)

DIN RAIL
35 mm wide

45627310 11 12 13 14 15 16 17 181234567893 (.12)

15.5 (.22)

30 (1.18)

6 (.24)6 (.24)
7–M3 SCREWTERMINALS
for CC-Link, POWER[5 (.20)]

18–M3 SCREWTERMINALS
for INPUT■ CONNECTION DIAGRAM■ When Used as Current Loop Supply
INPUT 0INPUT 1L0 24 DA

I0 111 DB+

L0 2COM 35 DG-I0 11

L1 42 SLD

I1 133 FG

2-WIRECOM 3TRANSMITTERCOM 5L2 6
INPUT 22-WIRE
TRANSMITTER

6 24V

L3 8-

I3 17
COM 97 0V

I2 15COM 7+SNSR EXC+ 10EXC. SUPPLYSNSR EXC− 1L3 8INPUT 3I3 17■ When Used as Current Input

COM 9EXC. SUPPLY24V DCSNSR
EXC+ 10SNSR
EXC- 1L0 2+INPUT–I0 11COM 3L3 8+INPUT–MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPANI3 17COM 9EM-7801-BA Rev.2P. 4 / 10

R7C-DS4N

COMMUNICATION CABLE CONNECTIONS
Master UnitTERMINATOR

blueDA
white
DB
yellow
DG
SLD
FG

Remote Unit

Remote Unit

DA
DB
DG
SLD
FG

DA
DB
DG
SLD
FG

TERMINATOR

Be sure to connect the terminating resistor included in the product package to the unit at both ends of communication line.
The terminator must be connected across DA and DB.
The Master Unit can be located other than at the extreme ends of communication line.

DATA ALLOCATIONANALOG INPUTInterval-timed Response (X)Refresh Data (Y)RWr n+0 Analog input 0

RWw n+0 Unused+1 Analog input 1+1 Unused+2 Analog input 2+2 Unused+3 Analog input 3+3 Unused• Without Extension Module
Interval-timed Response (X)Refresh Data (Y)RX(n+0) Status

RY(n+0)RX(n+1) Reserved

RY(n+1)

Unused• With Extension Module R7C-EA16
Interval-timed Response (X)Refresh Data (Y)RX(n+0) R7C-EA16

RY(n+0)RX(n+1) ReservedRY(n+1)

Unused• With Extension Module R7C-EC16xInterval-timed Response (X)Refresh Data (Y)RX(n+0) Status

RY(n+0) R7C-EC16xRX(n+1) Reserved

RY(n+1) Unused

MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPANEM-7801-BA Rev.2

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R7C-DS4N

I/O DATA DESCRIPTIONS■ ANALOG INPUT
150

16-bit binary data
Negative values represented in 2’s complements■ DISCRETE I/O
150

Input 0 (Output 0)
Input 1 (Output 1)
Input 2 (Output 2)

8 pointsInput 3 (Output 3)::
Input 7 (Output 7)

16 points

Input 8 (Output 8)::
Input 15 (Output 15)
0 : OFF
1 : ON■ STATUS
Analog input module without extension module can show input status of each channel.
150RX(n+0)
Input 0 (Input range error)
Input 1 (Input range error)
Input 2 (Input range error)
Input 3 (Input range error)
Input 0 (ADC error)
Input 1 (ADC error)
Input 2 (ADC error)
Input 3 (ADC error)
Unused:UnusedInput range error (≤ -15%, ≥ +115%)
0 : Normal 1 : Error
ADC error (no response from ADC)
0 : Normal 1 : Error

WIRING INSTRUCTIONS■ SCREW TERMINALTorque: 0.5 N·m■ SOLDERLESS TERMINAL
Refer to the drawing below for recommended ring tongue
terminal size. Spade tongue type is also applicable.
Applicable wire size: 0.25 to 1.65 mm2 (AWG 22 to 16)
Recommended manufacturer: Japan Solderless Terminal
MFG. Co., Ltd, Nichifu Co., Ltd

6 (.24) max

3.3 (.13) maxmm (inch)

MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPANEM-7801-BA Rev.2

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R7C-DS4N

CONFORMITY WITH CE MARKING■ CE MARKING
CE marking requires to integrate safety regulations existed in each country in EU territory and to secure smooth distributionof products of which safety is guaranteed. It is mandatory by law that products distributed and sold in EU territory to have
CE mark which shows that the product conforms with the requirements of EU Directive. Each EU Directive describes thescope of apparatuses to which that EU Directive is applied. The R7C must conform with EMC Directive.
Each Directive states only basic requirements. In order to mark the CE on an assembled machinery equipment, its manufacturer needs to check the overall conformity with Directives applicable to it.
■ WARNINGS AND CAUTIONS WHEN INSTALLING THE R7C
The R7C needs to be installed in a control panel. This is effective not only to ensure general safety but also to contain noise
emissions by the R7C inside the control panel. We conduct a series of testing to see that the product conforms to EMC Directive while it is installed in the control panel.
Warning and cautions when installing R7C are stated below.
• Use control panels with an internal panel plate, both made of metal, when installing the R7C.
• Make sure to adequately ground the control panel and the internal panel plate with a thick cable to maintain low impedance at high frequency.
• Use shielded cables for the signals taken out of the control panel.
• Choose a thick and short cable to ground the FG terminal of the R7C module to the internal panel plate of the control panel.
Note: If electromagnetic radiation disturbance increases by grounding the FG terminal, remove the grounding.

• When painting the internal plate of the control panel, apply masking to expose metal surface to secure conductivity at thesections where the following parts are attached:- Bolts attaching the internal panel to the control panel- Ground for the FG of the R7C module- Earth clamp on the shielded cable• Noise emissions inside the control panel might leak through its openings. Design them as small as possible. Recommended
diameter is 10 cm or less.
Supplement:
Additional measures may be taken depending upon actual installation sites. These points of cautions are illustrated in thenext page.
• Prevent noise leakage by wrapping cables using shield covers, shield tubes and flexible conduits etc. if noise leaks throughthe cable outlet.
• Use an electromagnetic shield gasket and block up the gap between the control panel cabinet and its cover, if noise leaks
through it.
• Connecting the internal panel plate and the cover of the control panel to the main cabinet using an earth strap may beeffective to strengthen the grounding.
• Electromagnetically shielded control panel cabinet is effective for shielding.

MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPANEM-7801-BA Rev.2

P. 7 / 10

R7C-DS4N• Points of cautions applicable when installing the R7C Series

Install the R7C Series inside
a control panel.
Attachment part of earth
clamp should be fixed withscrew in conduction with theinternal panel plate.

Keep the opening forventilation as small as
posible.

Attach an electromagnetically shieldedfilter when noise leaks
through the opening.

Keep the opening
for cabling as small as
possible.
To external apparatus
Use (e.g.) a shield coverwhen noise leaks throughthe opening.

By connecting theinternal panel plate
and the panel cover withan earth strap, grounding
may be strengthened andEMC may be improved.
Install an electromagneticallyshielded gasket whennoise leaks throughShielding is strengthened
the opening.
by using an electromagnetically shielded
control panel.

MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPANGround the control panel
at low impedance using(e.g.) braided wires.

EM-7801-BA Rev.2

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R7C-DS4N■ WARNINGS AND CAUTIONS WHEN LAYING CABLES
Signal cables connected to the R7C contain high-frequency components. Since these cables has the same effect as an antenna, they emit these high-frequency components to the external space as noise or overlaps noise from the external space onthemselves.
Cables with shielding should be used for the signal line due to the above reason.
EMC conformance test is conducted in the condition that shielded cables and earth clamps are used with the R7C.
Warning and cautions when laying cables are stated below. These points of cautions are illustrated in the next page.
• Use shielded cables for those signal cables installed out of the control panel and for thermocouple and RTD extension wires.
• All the network cables connected to R7C should be shielded.
• Use exclusively designed cables for the CC-Link.
• Expose the shield at a part of the cable cover, clip it with an earth clamp, and ground it to the internal panel of the controlpanel. A drain wire connected to the panel in a pig-tail form cannot maintain low impedance against high-frequency noise,thus grounding (noise shielding) in this form will not be effective.
Supplement:
Additional measures may be taken depending upon actual installation sites. These points of cautions are illustrated in thenext page.
• Keep cables as short as possible. It prevents noise emissions from the cables and noise overlapping to the cables.
• Attach a ferrite core to reduce noise impact to the signal cables susceptible to the noise. Ferrite core can be attached close
to the cable outlet of the control panel or close to the I/O terminal or connector, whichever is more effective. Also, the impact
might be reduced by winding the cable around the ferrite core for extra turns or attaching multiple ferrite cores.
• Keep cables which are easily affected by noise away from those which can be a noise source.
Motor DriveCable

Power Supply
Cable

Often being a noise source

DC Signal Cable
Network Cable

Analog Signal
Cable

Often subject to noise interference.

In the following are examples of effective ways to lay cables separately:• Keeping physical distance (farther than 20 cm from motor drive cables, farther than 10 cm for other groups).
• Dividing off by a grounded metal plate• Grouping into separate grounded metal pipes or cable shields.
Wires on each side of a filter should not be too close to each other. Noise could ride onto the other side of cable.
Extra attention needs to be paid at the following parts.
• Noise filter that is enclosed in power cables.
• Ferrite core that is attached to signal cables.
• Noise limiting circuit (surge quenching circuit, transient absorber circuit, etc.) that is enclosed in signal cables.

MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPANEM-7801-BA Rev.2

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R7C-DS4N• Points of cautions applicable when wiring the R7C Series

Keep the wires away fromeach other at both ends ofthe filter.

NoiseFilter

To external apparatus

Keep the cable asshort as possible.

EarthClamp

ShieldedCable

Remove a part of the shieldedcable cover and ground it
to the internal panel
plate using an earthclamp.

To connect withapparatuses outside
the control panel via
CC-Link, ground thecable shield using
an earth clamp.

To external apparatus

Motor
Drive Cable

Maintain distance between
cables and noise sources.

Grounding in pig tail form
is not effective.

MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPANEM-7801-BA Rev.2

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