INSTRUCTION MANUAL

ZERO-PHASE CURRENT INPUT MODULE(with noise filter)

MODEL

R3-CZ4

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.

■ 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.

■ PACKAGE INCLUDES:
Zero-phase current 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 when
you use this product, including installation, connection andbasic maintenance procedures.

■ 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.
■ 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-8447 Rev.5

P. 1 / 3

R3-CZ4COMPONENT IDENTIFICATION■ SIDE VIEW

■ FRONT VIEW
RUN LED
1ERR LED

23Functions

4SW2SW34321567Conv.
RateON8987654321

SW187654321ONRange
Input 2 (SW1)orInput 4 (SW2)
Input 1 (SW1)orInput 3 (SW2)ON

10■ 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: Bi-color (red/green) LED;
Red with input abnormality;
Green in normal operating conditions.

■ SIDE DIP SW(*) Factory setting• Input Range: SW1, SW2
INPUT 1 (SW1)
INPUT 2 (SW1)
INPUT 3 (SW2)
INPUT 4 (SW2)RANGE
12345678
OFF OFF OFF OFF OFF OFF OFF OFF 0 – 1.5mA (*)
ON OFF OFF OFF ON OFF OFF OFF 0 – 0.1mA• Conversion Rate: SW3-1, 3-2
SW
SW3-1
SW3-2

80 ms (*)
OFFOFF

CONVERSION RATE
40 ms
20 ms
ONOFFOFFON

10 ms
ON
ON

Note: Be sure to set unused SW3-3 and 3-4 to OFF.

PC 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
UnusedAVAILABLE RANGE-32000 to +32000-32000 to +32000-320.00 to +320.00-32000 to +32000
0: Enable
1: Disable

MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPANDEFAULT SETTING
0100000.00
1.0000
0: Enable

EM-8447 Rev.5

P. 2 / 3

R3-CZ4TERMINAL CONNECTIONSConnect the unit as in the diagram below.
■ EXTERNAL DIMENSIONS unit: mm (inch)
27.5 (1.08)

109 (4.29)

POSITIONING
GUIDE

1(.31)

2130 (5.12)

7.9310–M3.5
SCREW

456789TERMINAL
COVER10■ CONNECTION DIAGRAMWIRING INSTRUCTIONS

3ZCTl4LOAD
SOURCEINPUT 2LOAD
SOURCEINPUT 3LOAD
SOURCEINPUT 4LOADk5ZCTlk

INTERNAL
BUS A
INTERNAL
BUS B*

INTERNAL POWER

6■ SCREW TERMINALTorque: 0.8 N·m■ 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: 1.04 – 2 mm2Recommended manufacturer: Japan Solderless Terminal
MFG. Co., Ltd., Nichifu Co., Ltd.

7ZCTlk

9ZCTl

3.5 (.14) max.

8106 min.
(.24)

3.7 (.15) dia.

7 max.
(.28)

kINPUT 1

BUS CONNECTOR

SOURCE

14.5 (.57) max.

*For dual redundant communication.

MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPANEM-8447 Rev.5P. 3 / 3