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EJS-04 Series

4-port industrial EtherCAT junctions

moxa-ejs-04-series-image-(1).jpg | Moxa
moxa-ejs-04-series-image-1-(1).jpg | Moxa
moxa-ejs-04-series-image-2-(1).jpg | Moxa

Features and Benefits

  • 4 100BaseT(X) full-duplex RJ45 ports for multiple slave connections
  • Supports topology conversion for more flexible EtherCAT networks
  • Compact size for easy installation
  • Wide power input range with redundancy options
  • IP30-rated metal housing
  • Meets the EN 61000-6-2 and EN 61000-6-4 standards for industrial EMC applications
  • Supports DIN-rail grounding to optimize space and wiring

Certifications

  • moxa-ul-listed-certification-logo-image.png | Moxa
  • moxa-fcc-certification-logo-image.png | Moxa
  • moxa-ce-certification-logo-image.png | Moxa
 
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Introduction

Moxa’s EJS-04 Series EtherCAT junctions are equipped with 4 Fast Ethernet EtherCAT ports. These devices support star, line, ring, or tree topology conversion, enabling multiple EtherCAT devices to be connected in a modular and efficient manner. The EJS Series features a robust metal housing with high electromagnetic compatibility to shield against environmental inference while support for multiple grounding methods simplifies wiring and installation.

The EJS Series supports a range of redundancy features to enhance the reliability and availability of EtherCAT networks. Topology conversion minimizes production line interruptions and improves troubleshooting efficiency. The dual power input design lets you connect a redundant power supply for non-stop availability in the event of a main power failure. Moreover, the EJS Series can be used in redundancy topologies to provide alternative data paths in case one data path fails, ensuring that the exchange of data is not interrupted.

The EJS Series is certified for the EtherCAT Conformance Test by the EtherCAT Technology Group (ETG), meaning the EJS Series integrates into your existing network seamlessly, making the EJS Series ideal for use in any EtherCAT application.

  • FMMU

    8

  • Sync Manager

    8

  • Supported Topologies

    Star
    Line
    Tree
    Ring

  • Interfaces

    4 x 100BaseT(X) ports (RJ45 connector)
    Auto MDI/MDI-X connection

  • Port Combination

    1 (IN), 3 (OUT)

  • Port Delay

    1 μs per port (approximately)

  • ID Selector

    Valid address range: 1 to 4095

  • Connection

    1 removable 4-contact terminal block(s)

  • Input Current

    0.13 A (max.)

  • Input Voltage

    12/24/48 VDC

  • Operating Voltage

    9.6 to 60 VDC

  • Overload Current Protection

    Supported

  • Reverse Polarity Protection

    Supported

  • LED Indicators

    PWR1, PWR2, RUN

  • Dimensions

    24.5 x 100 x 75 mm (0.96 x 3.94 x 2.95 in)

  • Weight

    245 g (0.54 lb)

  • Cable Length

    100 m

  • Housing

    Metal

  • Installation

    DIN-rail mounting
    Wall mounting (with optional kit)

  • Operating Temperature

    Standard models: -10 to 60°C (14 to 140°F)
    Wide temp models: -40 to 75°C (-40 to 167°F)

  • Ambient Relative Humidity

    5 to 95% (non-condensing)

  • Storage Temperature (package included)

    -40 to 85°C (-40 to 185°F)

  • Safety

    UL 61010-2-201
    EN 62368-1

  • EMC

    EN 55032/35
    EN 61000-6-2/-6-4

  • EMI

    CISPR 22/32, FCC Part 15B Class A

  • EMS

    IEC 61000-4-2 ESD: Contact: 6 kV; Air: 8 kV
    IEC 61000-4-3 RS: 80 MHz to 1 GHz: 10 V/m
    IEC 61000-4-4 EFT: Power: 2 kV; Signal: 2 kV
    IEC 61000-4-5 Surge: Power: 2 kV; Signal: 2 kV
    IEC 61000-4-6 CS: 10 V
    IEC 61000-4-8 PFMF

  • Shock

    IEC 60068-2-27

  • Vibration

    IEC 60068-2-6
    IEC 60068-2-64

  • Freefall

    ISTA-1A (with package)

  • Time

    8,718,114 hrs

  • Standards

    Telcordia (Bellcore), GB

Software, Firmware, and Drivers

FILTER

Name Type Checksum Version Operating System Release Date
Software Package for EJS-04 Series (ESI file)
4.8 KB
Software Package
SHA-512
v1.0
Feb 21, 2025 Feb 21, 2025 Release notes

Support Documents

Name Type Version Release Date
QIG for EJS-04, EJS-08 Series
3.2 MB
QIG v1.0 Feb 24, 2025 Feb 24, 2025
Datasheet for EJS-04 Series
608.4 KB
Datasheet v1.0 Feb 24, 2025 Feb 24, 2025
Declaration of Conformity for EJS-04/08 Series
306.9 KB
Declaration v1.0 Dec 25, 2024 Dec 25, 2024

Available Models (1)

Show Images
moxa-ejs-04-image.jpg | MoxaEJS-04
100BaseT(X) Ports (RJ45 Connector)4
HousingMetal
Operating Temperature-10 to 60°C
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