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EDS-205A Series
5-port compact unmanaged Ethernet switches
Features and Benefits
• 10/100BaseT(X) (RJ45 connector), 100BaseFX (multi/single-mode, SC or ST
connector)
• Redundant dual 12/24/48 VDC power inputs
• IP30 aluminum housing
• Rugged hardware design well suited for hazardous locations (Class 1 Div. 2/
ATEX Zone 2), transportation (NEMA TS2/EN 50121-4), and maritime
environments (DNV/GL/LR/ABS/NK)
• -40 to 75°C operating temperature range (-T models)
Certifications
Introduction
The EDS-205A Series 5-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-205A Series has 12/24/48 VDC (9.6 to 60 VDC) redundant power inputs that can be connected simultaneously to live DC power
sources. These switches have been designed for harsh industrial environments, such as in maritime (DNV/GL/LR/ABS/NK), rail wayside, highway,
or mobile applications (EN 50121-4/NEMA TS2/e-Mark), or hazardous locations (Class I Div. 2, ATEX Zone 2) that comply with FCC, UL, and CE
standards.
The EDS-205A switches are available with a standard operating temperature range from -10 to 60°C, or with a wide operating temperature range
from -40 to 75°C. All models are subjected to a 100% burn-in test to ensure that they fulfill the special needs of industrial automation control
applications. In addition, the EDS-205A switches have DIP switches for enabling or disabling broadcast storm protection, providing another level of
flexibility for industrial applications.
Specifications
Ethernet Interface
10/100BaseT(X) Ports (RJ45 connector) EDS-205A/205A-T: 5
EDS-205A-M-SC/M-ST/S-SC Series: 4
All models support:
Auto negotiation speed
Full/half duplex mode
Auto MDI/MDI-X connection
100BaseFX Ports (multi-mode SC connector) EDS-205A-M-SC Series: 1
100BaseFX Ports (multi-mode ST connector) EDS-205A-M-ST Series: 1
100BaseFX Ports (single-mode SC connector) EDS-205A-S-SC Series: 1
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Standards IEEE 802.3 for 10BaseT
IEEE 802.3u for 100BaseT(X) and 100BaseFX
IEEE 802.3x for flow control
Optical Fiber
100BaseFX
Multi-Mode Single-Mode
Fiber Cable Type OM1
50/125 µm
G.652
800 MHz x km
Typical Distance 4 km 5 km 40 km
Wavelength
Typical (nm) 1300 1310
TX Range (nm) 1260 to 1360 1280 to 1340
RX Range (nm) 1100 to 1600 1100 to 1600
Optical Power
TX Range (dBm) -10 to -20 0 to -5
RX Range (dBm) -3 to -32 -3 to -34
Link Budget (dB) 12 29
Dispersion Penalty
(dB)
3 1
Note: When connecting a single-mode fiber transceiver, we recommend using an
attenuator to prevent damage caused by excessive optical power.
Note: Compute the “typical distance” of a specific fiber transceiver as follows: Link
budget (dB) > dispersion penalty (dB) + total link loss (dB).
Switch Properties
MAC Table Size 1 K
Packet Buffer Size 384 kbits
Processing Type Store and Forward
Power Parameters
Connection 1 removable 4-contact terminal block(s)
Input Current EDS-205A/205A-T: 0.09 A @ 24 VDC
EDS-205A-M-SC/M-ST/S-SC Series: 0.1 A @ 24 VDC
Input Voltage 12/24/48 VDC, Redundant dual inputs
Operating Voltage 9.6 to 60 VDC
Overload Current Protection Supported
Reverse Polarity Protection Supported
DIP Switch Configuration
Ethernet Interface Broadcast storm protection
Physical Characteristics
Housing Aluminum
IP Rating IP30
Dimensions 30 x 115 x 70 mm (1.18 x 4.52 x 2.76 in)
Weight 175 g (0.39 lb)
Installation DIN-rail mounting, Wall mounting (with optional kit)