Introduction
The EDS-308 Ethernet switches offer an economical solution for your industrial Ethernet connections. These 8-port switches have an integrated relay warning function that alerts network technicians in the event of power failures or port interruptions. In addition, the switches are designed for harsh industrial environments, such as hazardous areas defined by Class 1 Div. 2 and ATEX Zone 2 standards.

The switches comply with FCC, UL and CE standards and support either a standard operating temperature range of -10 to 60 °C or a wide operating temperature range of -40 to 75 °C. All switches in the series are 100 per cent burn-in tested to ensure that they meet the specific requirements of industrial automation control applications. The EDS-308 switches can be easily installed on a DIN rail or in a distribution box.

Input/Output Interface
– Alarm contact channels: 1 relay output with a current carrying capacity of 1 A @ 24 VDC

Ethernet interface
10/100BaseT(X) ports (RJ45 connection):
– EDS-308/308-T: 8
– EDS-308-M-SC/308-M-SC-T/308-S-SC/308-S-SC-T/308-S-SC-80: 7
– EDS-308-MM-SC/308-MM-SC-T/308-MM-ST/308-MM-ST/308-SS-SC/308-SS– SC-T/308-SS-SC-80: 6

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

100BaseFX connections (multi-mode SC connection):
– EDS-308-M-SC: 1
– EDS-308-M-SC-T: 1
– EDS-308-MM-SC: 2
– EDS-308-MM-SC-T: 2

100BaseFX ports (multi-mode ST connection):
– EDS-308-MM-ST: 2
– EDS-308-MM-ST-T: 2

100BaseFX ports (single-mode SC connection):
– EDS-308-S-SC: 1
– EDS-308-S-SC-T: 1
– EDS-308-SS-SC: 2
– EDS-308-SS-SC-T: 2

100BaseFX ports (single-mode SC connection, 80 km):
– EDS-308-S-SC-80: 1
– EDS-308-SS-SC-80: 2

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

– Fibre optic

DIP switch configuration
– Ethernet interface: port break alarm

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

Power parameters
Input current:
– EDS-308/308-T: 0.07 A @ 24 VDC
– EDS-308-M-SC: 0.11 A @ 24 VDC
– EDS-308-S-SC/308-S-SC-80: 0.12 A @ 24 VDC
– EDS-308-MM-SC/MM-ST/SS-SC/308-SS-SC-80: 0.15 A @ 24 VDC

– Connection: 1 removable 6-contact terminal block(s)
– Operating voltage: 9.6 to 60 VDC
– Input voltage: Redundant dual inputs, 12/24/48 VDC
– Reverse polarity protection: Supported
– Overload protection: Supported

Physical properties
– Housing: Metal
– IP protection class: IP30
– Dimensions: 53.6 x 135 x 105 mm (2.11 x 5.31 x 4.13 in)
– Weight: 790 g (1.75 lb)
– Mounting: DIN rail mount, wall mount (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, UL 60950-1, CSA C22.2 No. 60950-1, EN 62368 (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 MHz: 20 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

– Potentially explosive atmospheres: ATEX, Class I Division 2
– Vibration: IEC 60068-2-6
– Shock: IEC 60068-2-27
– Free fall: IEC 60068-2-32
– Marine: DNV

MTBF
Time:
– EDS-308/308-T: 2,972,907 hours
– EDS-308-M-SC/308-M-SC-T/308-S-SC/308-S-SC-T/308-S-SC-80: 2,646,710 hours
– EDS-308-MM-SC-T/308-S-SC-T/308-S-SC-80: 2,646,710 hours EDS-308-MM-SC/308-MM-SC-T/308-MM-ST/308-MM-ST-T/308-SS-SC/308-SS-SC-T/308-SS-SC-80: 2,382,553 hours

– Standards: MIL-HDBK-217F