Ports​

6 × 10/100BaseT(X) RJ45 ports

2 × 100BaseFX multimode SC fiber ports

Fiber Specification​

Multimode OM1 50/125 µm

Wavelength: 1300 nm

Typical distance: 4 km

Management​

Web GUI HTTP/HTTPS

Console RS-232

Telnet

SSH

SNMP v1/v2c/v3

RMON groups 1, 2, 3, 9

Redundancy​

Turbo Ring

RSTP IEEE 802.1w

MSTP IEEE 802.1s

Turbo Ring recovery time less than 20 ms for EDS-508A; EDS-408A supports Turbo Ring but official datasheet recovery figure is not stated

Switching Features​

IEEE 802.1Q VLAN

Port-based VLAN

64 VLANs

VID 1 to 4094

4 priority queues

1 Mbit packet buffer

2048 MAC addresses

IGMP v1/v2

Port mirroring

QoS IEEE 802.1p and DiffServ

Security​

802.1X port authentication

Static MAC lock

SNMPv3

SSH

HTTPS

Alarm And I/O​

1 relay alarm output

Rating: 1 A at 24 VDC

Alarm conditions: power failure, port link loss, ring break

Power Input​

Redundant dual input

12/24/48 VDC nominal

Operating voltage: 9.6 to 60 VDC

Input current: 0.61 A at 12 VDC, 0.30 A at 24 VDC, 0.16 A at 48 VDC

Reverse polarity protection

Overload protection

Mechanical​

Metal housing

IP30

Dimensions: 53.6 × 135 × 105 mm

Weight: 650 g

35 mm DIN-rail mounting

Optional wall mounting

Environment​

Standard operating temperature: -10 to 60 °C

Wide-temperature models: -40 to 75 °C

Storage temperature: -40 to 85 °C

Humidity: 5 to 95%, non-condensing

Certifications​

UL 508

EN 60950-1

EN 55032/EN 55035

FCC Part 15B Class A

IEC 61000-4 EMC family

ATEX Class I Division 2

IECEx

EN 50121-4 railway

NEMA TS2 for selected models

Application Scenarios​

Factory automation

Process control networks

Substation auxiliary networks

Rail signaling communication

Traffic control systems

Working Principle​

The switch learns MAC addresses and forwards Ethernet frames at Layer 2. The management processor handles VLAN, QoS, SNMP, ring topology, and alarm logic. Fiber ports provide electrically isolated long-distance links.

Installation Requirements​

Mount on 35 mm DIN rail or approved wall bracket.

Use isolated DC supply within 9.6 to 60 VDC.

Maintain ventilation space around the housing.

Ground the metal enclosure correctly.

Do not install in condensing or water-exposed areas unless the outer enclosure protects it.

Usage Notes​

Configure Turbo Ring master/coupler/reserve before startup.

Do not mix multimode and single-mode optics.

Check fiber attenuation before commissioning.

Back up configuration before changes.

Monitor relay alarm output in the control system.