General
Number of RJ45 ports	4
Number of fibre optic ports	1
Fibre optic connector	SC
Fibre optic data rate	100 Mbit/s
Maximum current draw	0,2 A
Relay output quantity	1 Kanal
Air humidity	5–95 %, nicht kondensierend
MTBF	3.327.332 Stunden

The Moxa EDS-305-M-SC is a compact, unmanaged Industrial Switch with integrated fibre optic connection, specifically designed for use in demanding industrial environments. The device features four 10/100BaseT(X) ports with RJ45 sockets and an additional 100BaseFX port with SC connector for multimode fibre optic. This combination enables flexible network connectivity, with the fibre optic option suitable for longer transmission distances or environmentally induced interference. The switch is certified for operation in hazardous areas, including ATEX Zone 2, Class I Div. 2, and IECEx, making it suitable for applications in power generation, petrochemicals, or mining.

Applications

The EDS-305-M-SC is suitable for industrial networks requiring reliable, robust, and low-maintenance connectivity. Typical application scenarios include decentralised control systems, machine and plant monitoring, and networking of sensors and actuators in production environments. Certification for hazardous areas extends its application to environments with explosion risks. Mounting is either on a DIN rail or on the wall, with special accessories required for wall mounting.

Functions and Equipment in Detail

The switch supports Auto-Negotiation and Auto MDI/MDI-X, enabling automatic detection and adjustment of connection settings. This reduces configuration effort and allows for quick commissioning. The operating mode can be selected between Full- and Half-Duplex. An integrated relay output with a load capacity of 1 A at 24 VDC is used to signal power failures or port interruptions, enabling external alarm or control functions. The Broadcast Storm Protection can be activated via a DIP switch to prevent network overload caused by uncontrolled broadcast traffic.

Technology Explained Simply

The 10/100BaseT(X) ports enable data transfer rates of 10 or 100 Mbit/s over copper cables (Cat5 or higher), with speed automatically adjusted to the connection. The 100BaseFX port transmits data over multimode fibre optic cables with SC connectors, providing higher interference resistance and longer reach. Power supply is via a 12–48 VDC source (extended to 9.6–60 VDC), with integrated reverse polarity and overcurrent protection. The metal housing provides mechanical stability and protection against mechanical impacts. The protection rating IP30 protects against solid foreign objects larger than 2.5 mm, but not against water or dust.

Compatibility and Accessories

The switch is compatible with other models in the EDS-305 series, particularly variants supporting ST connectors or single-mode fibre optic. The use of multimode fibre optic cables with SC connectors is required to utilise the fibre optic port. Cable connections are made via standardised RJ45 and SC connectors, commonly used in industrial networks.

Mounting and Installation

Mounting is either on a DIN rail, typical for enclosures, or on the wall using optional mounting accessories. Installation requires no special network configuration, as it is an unmanaged switch. The quick installation guide included in the delivery supports setup. Power supply is via an external DC source within the specified voltage range.

Operational Advantages

The EDS-305-M-SC is characterised by high operational reliability, supported by an MTBF of 3,327,332 hours. The extended operating temperature range of -40 to 75 °C (for -T models) enables use in extreme environments. Certifications according to ATEX, IECEx, and Class I Div. 2 ensure safe operation in explosion-hazardous areas. The integrated relay output allows direct integration into existing alarm or control systems. The 5-year manufacturer’s warranty underscores the reliability of the device.

Scope of Delivery

The scope of delivery includes the EDS-305-M-SC switch, caps for the RJ45 and SC ports, a quick installation guide, and a warranty card.