Moxa EDS-308-T Unmanaged Industrial Ethernet Switch User Manual

1. Introduction

This manual provides instructions for the installation, operation, and maintenance of the Moxa EDS-308-T Unmanaged Industrial Ethernet Switch. The EDS-308-T is designed for industrial applications, offering reliable Ethernet connectivity in harsh environments.

1.1 Safety Information

• Always disconnect power before installation or maintenance.
• Ensure proper grounding to prevent electrical hazards.
• Operate the device within the specified temperature and humidity ranges.
• Do not open the device enclosure; there are no user-serviceable parts inside.

2. Package Contents

Verify that your package contains the following items:

• Moxa EDS-308-T Industrial Ethernet Switch
• Quick Installation Guide (if applicable, not provided in this manual)
• Warranty Card (if applicable)

If any items are missing or damaged, please contact your vendor immediately.

3. Product Features

The Moxa EDS-308-T Unmanaged Industrial Ethernet Switch offers the following key features:

• 8 x 10/100BaseTX Ethernet Ports with RJ45 connectors.
• Unmanaged operation for plug-and-play simplicity.
• Smart Relay Output Alarm for power failure or port link-down events.
• Wide operating temperature range: -40 to 75°C (-40 to 167°F).
• Redundant dual DC power inputs for enhanced reliability.
• Industrial-grade design for harsh environments.

4. Hardware Description

4.1 Front Panel Layout

The front panel of the EDS-308-T switch features Ethernet ports, LED indicators, and power input terminals.

Figure 1: Front view of the Moxa EDS-308-T switch. This image displays the eight RJ45 Ethernet ports, labeled 1 through 8, along with LED indicators for power (PWR1, PWR2), fault (FAULT), and individual port link/activity. The top features a green terminal block for power input and relay output.

4.2 LED Indicators

• PWR1/PWR2: Green LED. Indicates power input from PWR1 or PWR2 is active.
• FAULT: Red LED. Illuminates when a power input fails or a configured port link-down event occurs.
• 10/100M (Port LEDs): Green LED for each port.
  • On: Link established at 100 Mbps.
  • Flashing: Data activity at 100 Mbps.
  • Off: No link or link at 10 Mbps.
• 10M (Port LEDs): Amber LED for each port.
  • On: Link established at 10 Mbps.
  • Flashing: Data activity at 10 Mbps.
  • Off: No link or link at 100 Mbps.

4.3 Rear/Side Panel

The rear and side panels typically feature mounting options and heat dissipation fins.

Figure 2: Angled view of the Moxa EDS-308-T switch. This perspective highlights the robust, ribbed metal casing designed for industrial environments and efficient heat dissipation, alongside the front panel's connectivity options.

5. Installation

5.1 Mounting

The EDS-308-T supports DIN-rail mounting. Follow these steps:

1. Attach the DIN-rail kit to the rear of the switch (if not pre-installed).
2. Hook the top of the DIN-rail clip over the top edge of the DIN rail.
3. Press the switch firmly against the DIN rail until it snaps into place.
4. Ensure the switch is securely fastened.

5.2 Wiring the Power Input

The EDS-308-T features redundant dual DC power inputs. Use the terminal block at the top of the device.

1. Ensure power sources are off before connecting wires.
2. Connect the positive (+) wire from your DC power supply to the V+ terminal.
3. Connect the negative (-) wire from your DC power supply to the V- terminal.
4. Connect the ground wire to the ⊗ (ground) terminal.
5. Repeat for the second power input (if using redundancy).
6. Tighten the terminal block screws to secure the wires.

5.3 Connecting the Relay Output

The relay output can be used to trigger an alarm when a power failure or port link-down event occurs.

1. Connect the alarm device to the NO (Normally Open) and COM (Common) contacts on the terminal block.
2. Refer to the device's specifications for relay contact ratings.

5.4 Connecting Network Cables

Connect standard RJ45 Ethernet cables from your network devices (e.g., PCs, PLCs, other switches) to the 10/100BaseTX ports on the front panel of the EDS-308-T.

• The switch supports auto MDI/MDI-X, so straight-through or crossover cables can be used.
• Ensure cables are securely seated in the ports.

6. Setup and Operation

6.1 Initial Power-Up

1. After all connections are made, apply power to the EDS-308-T.
2. Observe the PWR1 and/or PWR2 LEDs. They should illuminate green, indicating successful power-up.
3. The FAULT LED should remain off under normal operating conditions.

6.2 Network Connectivity

As an unmanaged switch, the EDS-308-T operates on a plug-and-play basis. No software configuration is required.

• When a network device is connected to a port, the corresponding 10/100M or 10M LED will light up, indicating a link.
• The LED will flash when data is being transmitted or received through that port.
• Ensure all connected devices are configured with compatible network settings (e.g., IP addresses within the same subnet if using IP-based communication).

7. Maintenance

7.1 Cleaning

• Periodically clean the exterior of the switch with a soft, dry cloth.
• Do not use liquid or aerosol cleaners.
• Ensure ventilation openings are free from dust and debris to maintain proper heat dissipation.

7.2 Firmware Updates

As an unmanaged switch, the EDS-308-T typically does not require user-initiated firmware updates. Any updates would generally be handled by the manufacturer for critical bug fixes or performance improvements, and would require specialized tools or procedures not available to end-users.

8. Troubleshooting

• No Power (PWR LEDs Off):
  • Check power cable connections to the terminal block.
  • Verify the power supply is functioning and providing the correct voltage.
  • Ensure the power source is active.
• FAULT LED On:
  • One or both power inputs may have failed. Check power supplies.
  • A configured port link-down event has occurred. Check network cable connections and the status of connected devices.
• No Link (Port LEDs Off):
  • Ensure the Ethernet cable is securely connected at both ends.
  • Verify the connected device is powered on and functioning correctly.
  • Try a different Ethernet cable.
  • Test with a different port on the switch.
• Slow Network Performance:
  • Check for excessive network traffic or loops (though unmanaged switches have limited loop prevention).
  • Ensure cables are not damaged and are of appropriate quality.
  • Verify connected devices are operating at their expected speeds (10/100 Mbps).

If issues persist, contact Moxa technical support for further assistance.

9. Specifications

10. Warranty and Support

Moxa products are designed for reliability and performance. For warranty information, please refer to the warranty card included with your product or visit the official Moxa website.

For technical support, product documentation, or to report issues, please contact Moxa customer service or your local distributor. Contact information can typically be found on the Moxa official website.