Moxa EDS-308-MM-ST 8-Port Industrial Grade ST Multi-mode Fiber Switch

The Moxa EDS-308-MM-ST is an 8-port industrial-grade switch designed for robust network connectivity in demanding environments. It boasts a multi-mode fiber optic capability with ST connectors, offering enhanced transmission distances and immunity to electromagnetic interference, crucial for industrial automation and control systems. With its ruggedized design and essential features, this Moxa switch ensures reliable data communication where standard networking equipment would fail.

Product Specifications

| Feature              | Specification                               |

| :------------------- | :------------------------------------------ |

| Ports                | 8 x 10/100BaseT(X) Ethernet ports           |

| Fiber Ports          | 2 x 100BaseFX Multi-mode ST ports           |

| Power Input          | 12/24/48 VDC (9.6-60 VDC), redundant        |

| Operating Temperature | -40 to 75 °C                                |

| Mounting             | DIN-rail, Panel, Rackmount                  |

| Dimensions           | 50 x 135 x 105 mm                           |

| IP Rating            | IP30                                        |

| MTBF                 | 240,000+ hours                              |

Core Features & Market Positioning

The Moxa EDS-308-MM-ST distinguishes itself with its robust industrial design, engineered to withstand extreme temperatures, vibration, and shock, making it ideal for harsh factory floor conditions and outdoor applications. Its multi-mode fiber ports provide a cost-effective solution for extending network reach over distances up to 2 kilometers, while offering superior noise immunity compared to copper Ethernet. This positions the EDS-308-MM-ST as a reliable backbone component for industrial networks requiring dependable data transfer. The inclusion of dual power inputs enhances operational continuity, mitigating single points of failure critical in process automation.

Key Application Scenarios

This industrial Ethernet switch is exceptionally well-suited for applications demanding high network reliability in challenging environments. Common scenarios include manufacturing automation, where it facilitates communication between PLCs, sensors, and SCADA systems across noisy factory floors. In transportation, it supports intelligent transport systems (ITS) and railway signaling networks, leveraging fiber's resistance to electrical interference. Energy sectors, such as oil and gas or power generation, benefit from its wide operating temperature range and rugged construction for remote monitoring and control. Water and wastewater treatment plants also utilize such switches for reliable data acquisition and control from distributed field equipment.

Practical System Integration Guidance

Integrating the Moxa EDS-308-MM-ST into an industrial network is straightforward. For installation, the unit can be mounted on a standard DIN-rail, a wall using an optional mounting panel, or within a 19-inch rack using a rackmount kit. Power is supplied via two terminal blocks, ensuring redundancy; connect the primary power source to one and the backup to the other. The ST multi-mode fiber ports should be connected to corresponding fiber ports on other network devices, such as other Moxa switches or media converters, using appropriate multi-mode fiber optic cables (e.g., 62.5/125 µm or 50/125 µm). Ensure fiber connections are clean and secure to maintain signal integrity. For initial configuration or diagnostics, a console port is available, typically via an RJ45 connector, allowing direct access for setting IP addresses, network protocols, and other parameters using a terminal emulator.

Operation and Risk Mitigation

The Moxa EDS-308-MM-ST operates as a plug-and-play device for basic connectivity, but advanced features can be configured via its web interface, Telnet, or console port. To mitigate operational risks, ensure proper power supply voltage within the specified range (9.6-60 VDC) and utilize the redundant power inputs to prevent downtime in case of power source failure. Regular inspection of fiber optic connections for cleanliness and damage is essential for maintaining optimal performance and preventing intermittent connectivity issues. In environments with extreme temperatures, ensure adequate ventilation around the unit. While the EDS-308-MM-ST is designed for industrial resilience, avoiding direct exposure to corrosive elements or excessive moisture beyond its IP30 rating is advisable.

Scalability & Long-Term Value

The EDS-308-MM-ST offers significant long-term value through its robust construction and compatibility with various industrial networking protocols. Its 8-port configuration provides a solid foundation for expanding networks, allowing for the connection of multiple devices. For larger deployments or future upgrades, Moxa's extensive product portfolio includes managed switches and higher-density fiber solutions that can seamlessly integrate with the EDS-308-MM-ST, facilitating network growth. Its adherence to industrial standards ensures interoperability with existing infrastructure and future IIoT (Industrial Internet of Things) platforms, supporting the transition to smarter, more connected industrial operations. The extended Mean Time Between Failures (MTBF) of over 240,000 hours underscores its reliability and reduces the total cost of ownership by minimizing maintenance and replacement cycles.

Frequently Asked Questions (FAQs)

What is the maximum distance for the multi-mode fiber ports on the Moxa EDS-308-MM-ST?

The Moxa EDS-308-MM-ST utilizes multi-mode fiber optics, typically supporting distances up to 2 kilometers. This extended reach is ideal for connecting devices across large factory floors or between adjacent buildings. Proper fiber cable selection (e.g., 50/125 µm or 62.5/125 µm) is crucial for achieving optimal performance within this range.

What type of power input does the Moxa EDS-308-MM-ST support for reliable operation?

This industrial switch features dual redundant power inputs, supporting a wide voltage range from 9.6 to 60 VDC. This redundancy ensures continuous operation even if one power source fails. The wide voltage tolerance makes it compatible with various industrial power supply configurations.

Can the Moxa EDS-308-MM-ST be easily mounted in an industrial control cabinet?

Yes, the EDS-308-MM-ST is designed for flexible industrial mounting. It supports standard DIN-rail mounting, which is common in control cabinets, and optional panel or rackmount kits are also available. This versatility simplifies integration into diverse industrial setups.

How does the fiber optic connectivity of the EDS-308-MM-ST benefit industrial networks?

Fiber optic connections offer superior immunity to electromagnetic interference (EMI), which is prevalent in industrial environments. This ensures stable and reliable data transmission, preventing communication disruptions. Fiber also allows for longer transmission distances compared to standard copper Ethernet cables.

What are the key environmental specifications of the Moxa EDS-308-MM-ST for industrial use?

The EDS-308-MM-MM-ST is built for harsh conditions, featuring a wide operating temperature range of -40 to 75 °C. Its ruggedized design also provides resistance to vibration and shock. The IP30 rating indicates protection against solid objects larger than 2.5mm, suitable for indoor industrial settings.

What is the significance of the ST connector type on the Moxa EDS-308-MM-ST?

ST connectors are a widely used, robust bayonet-style connector for fiber optic applications. They offer a secure and reliable physical connection, which is important in environments prone to vibration. The ST connector ensures a consistent and stable link for the multi-mode fiber ports.

Does the Moxa EDS-308-MM-ST offer any management features for network monitoring?

While the EDS-308-MM-ST is primarily an unmanaged switch, it provides basic functionality essential for industrial networks. For advanced management features like VLANs or QoS, Moxa offers managed industrial switches that can be integrated into the same network infrastructure.

What is the typical Mean Time Between Failures (MTBF) for the Moxa EDS-308-MM-ST?

The Moxa EDS-308-MM-ST boasts a Mean Time Between Failures (MTBF) exceeding 240,000 hours. This high MTBF rating signifies exceptional reliability and durability, reducing the likelihood of hardware failure and associated downtime in critical industrial applications.

How can I ensure optimal performance when connecting fiber optic cables to the EDS-308-MM-ST?

Ensure that the fiber optic cables are clean before connecting them to the ST ports. Use appropriate multi-mode fiber optic patch cords. Verify that the cable type and core size (e.g., 62.5/125 µm or 50/125 µm) match the specifications of both the switch and the connected device.

What are common troubleshooting steps for connectivity issues with the EDS-308-MM-ST?

Check all power connections and verify the input voltage is within the acceptable range. Inspect both Ethernet and fiber optic cable connections for physical damage or loose fittings. Reboot the switch and connected devices. For fiber issues, clean the connectors and ensure proper port alignment.