Introduction
The EDS-208A series 8-port industrial Ethernet switches support IEEE 802.3 and IEEE 802.3u/x with 10/100M full/half duplex, MDI/MDI-X auto-sensing. The EDS-208A series has 12/24/48 VDC (9.6 to 60 VDC) redundant power inputs that can be simultaneously connected to live DC power sources. These switches are designed for harsh industrial environments, such as marine (DNV/LR/ABS/NK), railway stations, motorways or mobile applications (EN 50121-4/NEMA TS2/e-Mark) or hazardous areas (Class I Div. 2, ATEX Zone 2) that comply with FCC, UL and CE standards.

The EDS-208A switches are available with a standard operating temperature range of -10 to 60 °C or with a wide operating temperature range of -40 to 75 °C. All models are subjected to a 100 per cent temperature test. All models are 100 per cent burn-in tested to ensure that they meet the specific requirements of industrial automation control applications. In addition, the EDS-208A switches have DIP switches to enable or disable broadcast storm protection, providing another level of flexibility for industrial applications.

Ethernet interface
10/100BaseT(X) ports (RJ45 connector):
– EDS-208A/208A-T models: 8
– EDS-208A-M-SC/M-ST/S-SC models: 7
– EDS-208A-MM-SC/MM-ST/SS-SC models: 6

All models support:
– Automatic speed negotiation
– Full/half duplex mode
– Automatic MDI/MDI-X connection

100BaseFX ports (multi-mode SC connection):
– EDS-208A-M-SC models: 1
– EDS-208A-MM-SC models: 2

100BaseFX ports (multi-mode ST connection):
– EDS-208A-M-ST models: 1
– EDS-208A-MM-ST models: 2

100BaseFX ports (single-mode SC connection):
– EDS-208A-S-SC models: 1
– EDS-208A-SS-SC models: 2

Standards:
– IEEE 802.3 for 10BaseT
– IEEE 802.3u for 100BaseT(X) and 100BaseFX
– IEEE 802.3x for flow control

– Fibre optic

Switch features
– MAC table size: 2 K
– Packet buffer size: 768 kbits
– Processing type: Store and forward

Performance parameters
– Connection: 1 detachable 4-contact terminal block(s)

Input current:
– Models EDS-208A/208A-T, EDS-208A-M-SC/M-ST/S-SC: 0.11 A @ 24 VDC
– Models EDS-208A-MM-SC/MM-ST/SS-SC: 0.15 A @ 24 VDC

– Input voltage: 12/24/48 VDC, Redundant dual inputs
– Operating voltage: 9.6 to 60 VDC
– Overload current protection: Supports
– Reverse polarity protection: Supports

DIP switch configuration
– Ethernet interface: Broadcast storm protection

Physical characteristics
– Housing: Aluminium
– IP protection class: IP30
– Dimensions: 50 x 114 x 70 mm (1.96 x 4.49 x 2.76 in)
– Weight: 275 g (0.61 lb)
– Installation: DIN rail mounting, wall mounting (with optional kit)

Environmental conditions
Operating temperature:
– Standard models: -10 to 60°C (14 to 140°F)
– Wide temp. models: -40 to 75°C (-40 to 167°F)

– Storage temperature (including packaging): -40 to 85°C (-40 to 185°F)
– Ambient Relative Humidity: 5 to 95% (non-condensing)

Standards and Certifications
– Safety: UL 508, EN 62368-1 (LVD)
– EMC: EN 55032/35
– EMI: CISPR 32, FCC Part 15B Class A

EMS:
– IEC 61000-4-2 ESD: Contact: 6 kV; Air: 8 kV
– IEC 61000-4-3 RS: 80 MHz to 1 GHz: 10 V/m
– IEC 61000-4-4 EFT: Power: 2 kV; Signal: 1 kV
– IEC 61000-4-5 Surge: Power: 2 kV; Signal: 2 kV
– IEC 61000-4-6 CS: 10 V
– IEC 61000-4-8 PFMF

– Potentially explosive atmospheres: ATEX, Class I Division 2
– Railway: EN 50121-4
– Traffic control: NEMA TS2
– Vibration: IEC 60068-2-6
– Shock: IEC 60068-2-27
– Free fall: IEC 60068-2-31
– Marine: ABS, LR, NK, DNV

MTBF
Time:
– EDS-208A: 3,248,014 hours
– EDS-208A-MM/SS: 2,705,157 hours
– EDS-208A-M/S: 2,943,335 hours
– Standards: Telcordia (Bellcore), GB