Moxa EDS-208A Series Switches 规格指南

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Industrial Ethernet Solutions
The EDS-205A/208A series are 5 and 8-port industrial Ethernet 
switches that support IEEE 802.3 and IEEE 802.3u/x with 10/100M full/
half-duplex, MDI/MDI-X auto-sensing. The EDS-205A/208A switches 
provide 12/24/48 VDC (9.6 to 60 VDC), 18 to 30 VAC redundant power 
inputs that can be connected simultaneously to live AC/DC power 
sources. These switches have been designed for harsh industrial 
environments, such as in maritime (DNV/GL) or hazardous locations 
(Class I Div. 2, ATEX Zone 2) that comply with FCC, UL, and CE 
standards.
Introduction
EDS-205A/208A Series
10/100BaseT(X) (RJ45 connector), 100BaseFX  
 
(multi/single-mode, SC or ST connector)
Redundant dual 12/24/48 VDC, 18 to 30 VAC power inputs
 
IP30 aluminum housing
 
Rugged hardware design well suited for hazardous locations 
 
(Class I Div. 2 /ATEX) and maritime environments (DNV/GL)
-40 to 75°C operating temperature range (T models)
 
Specifications
5 and 8-port unmanaged Ethernet switches
100BaseFX
Multi-mode
Single-mode
Wavelength
1300 nm
1310 nm
Max. TX
-10 dBm
0 dBm
Min. TX
-20 dBm
-5 dBm
RX Sensitivity
-32 dBm
-34 dBm
Link Budget
12 dB
29 dB
Typical Distance
5 km a
4 km b
40 km c
Saturation
-6 dBm
-3 dBm
a. 50/125 μm, 800 MHz*km fiber optic cable
b. 62.5/125 μm, 500 MHz*km fiber optic cable
c. 9/125 μm single-mode fiber optic cable
The EDS-205A/208A 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/208A switches have DIP switches for enabling or disabling 
broadcast storm protection, providing another level of flexibility for 
industrial applications.
Technology
Standards: 
IEEE 802.3 for 10BaseT 
IEEE 802.3u for 100BaseT(X) and 100BaseFX 
IEEE 802.3x for Flow Control
Processing Type: Store and Forward
Flow Control: IEEE 802.3x flow control, back pressure flow control
Switch Properties
MAC Table Size: 1 K
Packet Buffer Size: 512 Kbit
Interface 
Fiber Ports: 100BaseFX ports (SC/ST connector, multi-mode, 
single-mode)
RJ45 Ports: 10/100BaseT(X) auto negotiation speed, Full/Half duplex 
mode, and auto MDI/MDI-X connection
DIP Switches: Enable/Disable broadcast storm protection
LED Indicators: Power, 10/100M (TP port), 100M (fiber port)
Optical Fiber
    
Power Requirements
Input Voltage: 12/24/48 VDC (9.6 to 60 VDC), 18 to 30 VAC (47 to 63 
Hz), redundant dual inputs
Input Current:  
EDS-205A: 0.1 A @ 24 V 
EDS-205A-M/S: 0.11 A @ 24 V 
EDS-208A: 0.13 A @ 24 V 
EDS-208A-M: 0.17 A @ 24 V 
EDS-208A-MM/SS: 0.22 A @ 24 V
Overload Current Protection: 1.1 A
Connection: 1 removable 4-contact terminal block
Reverse Polarity Protection: Present