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Schneider Electric 3BZ2, EOCR-i3BZ, FBZ2, iFBZ Bus connection through a SCA type junction box

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Communication Guide

Bus connection through a SCA type junction box

1. Master (PLC, PC or communication module)

2. Modbus cable (It is different according to the master side or a master having polarization combined to the other part of Bus)

3. Junction box

4. Modbus cable

5. Line terminators : 120Ω- 0.25W

Please use a cable with 2pair shieded twisted conductors for Interface protection.

It is adviced to isolate the Modbus cable 30cm(11.8in) at least from a power cable.

If necessary, intersect the Modbus cable to a power cable perpendicularly.

Refer to the diagram in the left side for the line terminator wiring.

2 wire MODBUS RJ45 connections

Pin ‘S’ can be used for shield wire connection.

Pin on RJ45 Pin on nEOCR EIA/TIA 485 name

4 D1 B/B’

5 D0 A/A’

8 V- C/C’

Contents

Main Page Page Page Public institutions Control power Composition by function Contact contact Rated current General Features Protection functions Auxillary functions Communication function (Applicable to i3BZ/iFBZ) Specifications Page Over current and time setting tips Alert Operation Pattern (#3) Fail-safe operation Front face 5 digit 7 segment LED display Rotate 3 phase digital ammeter function Setting sequence Buttons and Setting Sequence Page Setting sequence and menu 3 fault records including the trip cause and 3phase currents are stored in a non-volatile memory. Trip cause indication and fault records 96 97 98 Z1 Z2 V- D1 D0 S A1 A2 95 Control terminals Wiring Examples Single phase line Diagram Single line Diagram Single line Diagram Dimensions Order Code i For nEOCR- order A B L E -RJ45 -001 C 3 B Z -WR AUH L Modbus network setting RS485 bus connection Standard connection Bus connection through a SCA type junction box