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The Moxa EtherDevice™ EDS-405A/408A series comprises 5-port and 8-port smart Ethernet switches, designed to provide a cost-effective solution for Ethernet connections in industrial settings. These devices are equipped with a built-in smart alarm function, which assists system maintainers in monitoring the health and operational status of their Ethernet network, thereby enhancing reliability and proactive maintenance.
The EDS-405A/408A series switches are primarily designed for network connectivity, offering a range of 10/100BaseT(X) Ethernet ports and, in some models, 100BaseFX fiber ports (SC/ST-type connectors). This allows for flexible integration into various network architectures, supporting both copper and fiber optic connections. The devices support auto-negotiation for speed and duplex mode on their copper ports, as well as auto MDI/MDI-X functionality, simplifying cable connections by eliminating the need to differentiate between straight-through and cross-over Ethernet cables.
A key feature of these switches is their support for Moxa's proprietary Turbo Ring and Turbo Ring V2 protocols, which provide managed redundant Ethernet capabilities. These protocols ensure high network reliability and fast recovery times, significantly reducing potential data loss due to network failures. The recovery time for Turbo Ring is less than 300 ms, and for Turbo Ring V2, it is even faster, at less than 20 ms, which is a substantial improvement over the 3 to 5-minute recovery times typically seen in commercial switches. This makes the EDS-405A/408A series particularly suitable for critical industrial applications where network uptime is paramount.
The switches incorporate a relay contact for alarm signaling. This contact can be configured to trigger an alarm in response to various events, such as power faults, port faults, or a broken Turbo Ring. This allows for immediate notification of network issues, enabling prompt corrective action.
Power input is designed for redundancy, with two DC inputs (12 to 45 VDC for standard models, and ±24/±48 VDC for specific models like the EDS-408A-3S-SC-48). This means both power inputs can be connected simultaneously to live DC power sources. If one power source fails, the other automatically takes over, ensuring continuous operation of the switch and the connected network.
The EDS-405A/408A switches offer versatile mounting options, including DIN-Rail mounting and optional wall mounting. The DIN-Rail attachment plate is typically pre-fixed to the back panel, allowing for quick installation in industrial cabinets. For wall mounting, the DIN-Rail plate can be removed, and wall mount plates attached, providing flexibility for different installation environments.
Configuration of the Turbo Ring functionality can be done easily using hardware DIP switches located on the top panel. These 4 DIP switches allow users to set up the Turbo Ring within seconds, designating a switch as the Ring Master or a ring coupler. For more advanced configurations or if hardware DIP switches are not preferred, the function can be disabled, and the switch can be configured via a web browser, Telnet, or console port. This dual approach provides both simplicity for quick setup and flexibility for detailed network management.
LED indicators on the front panel provide clear visual feedback on the operational status of the switch and its ports. These include LEDs for power input (PWR1, PWR2), fault status, Master/Head status (MSTR/HEAD), Coupler/Tail status (CPLR/TAIL), and link/activity status for both 10 Mbps and 100 Mbps on the copper and fiber ports. These indicators allow for quick assessment of the device's health and network connectivity at a glance.
The console port (RJ45-to-DB9 cable included) provides a direct interface for command-line configuration and management, offering a robust option for initial setup or troubleshooting.
The smart alarm function is a core maintenance feature, designed to help system maintainers monitor the health of the Ethernet network. By triggering the relay contact in response to faults, the switch can alert personnel to issues such as power failures or port malfunctions, enabling proactive maintenance and minimizing downtime.
The redundant power inputs contribute significantly to the device's reliability and ease of maintenance. In the event of a power source failure, the automatic switchover to the backup power source ensures uninterrupted operation, reducing the need for immediate intervention and allowing for scheduled replacement or repair of the faulty power source.
The clear LED indicators on the front panel are invaluable for troubleshooting. They allow maintenance personnel to quickly identify the status of power inputs, detect faults, and check the link and activity status of individual ports without needing to access software interfaces. This visual feedback streamlines the diagnostic process.
The robust design, including a metal housing with IP30 protection, ensures durability in harsh industrial environments, reducing the likelihood of physical damage and the need for frequent repairs. The device is designed to operate within a wide ambient temperature range (-40°C to 75°C for -T models), further enhancing its reliability in challenging conditions.
Wiring requirements emphasize safety and noise reduction, guiding users to route power and signal wiring separately and use appropriate wire sizes. This attention to detail in installation practices helps prevent electromagnetic interference (EMI) and ensures stable operation, thereby reducing maintenance issues related to signal integrity. The grounding screw provides a dedicated point for establishing a secure ground connection, which is crucial for mitigating EMI effects.
The inclusion of protective caps for unused ports in the package checklist highlights attention to detail in protecting the device from dust and environmental contaminants, which can prolong the lifespan of the ports and reduce maintenance needs.
General| Ports | 5 |
|---|---|
| PoE Ports | 4 |
| PoE Budget | 60W |
| Switching Architecture | Store and Forward |
| Operating Temperature | -40 to 75 °C |
| Mounting | DIN-Rail |
| Protocol | Ethernet |
| Redundancy | Turbo Ring, Turbo Chain (recovery time < 20 ms), RSTP/STP |
| Housing | IP30 |
| Standards Compliance | IEEE 802.3, IEEE 802.3u, IEEE 802.3x |
| Series | EDS-400A |
| Power Input | 12 to 48 VDC |
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