Moxa EDS-408A-3S-SC-48 Series Switches Specification Guide

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Industrial Ethernet Solutions
EDS-408A-3S-SC-48 Series
Introduction
The EDS-408A-3S-SC-48 is an 8-port managed Ethernet switch 
designed especially for industrial applications. The switch supports a 
variety of useful management functions, such as Turbo Ring, Turbo 
Chain, ring coupling, port-based VLAN, QoS, RMON, bandwidth 
IPv6 Ready logo awarded (IPv6 Logo Committee certified)
DHCP Option 82 for IP address assignment with different policies
Modbus/TCP industrial Ethernet protocol supported
Turbo Ring and Turbo Chain (recovery time < 20 ms at full load), 
and RSTP/STP (IEEE 802.1w/D) 
IGMP snooping and GMRP for filtering multicast traffic
Specifications
8-port entry-level managed Ethernet switches
management, port mirroring, and warning by email or relay. The 
ready-to-use Turbo Ring can be set up easily using the web-based 
management interface, or with the DIP switches located on the top 
panel of the EDS-408A-3S-SC-48.
Port-based VLAN, IEEE 802.1Q VLAN, and GVRP to ease network 
planning
QoS (IEEE 802.1p and TOS/DiffServ) to increase determinism
RMON for efficient network monitoring and proactive capability
SNMPv1/v2c/v3 for different levels of network management  
security
Bandwidth management to prevent unpredictable network status
Port mirroring for online debugging
Features and Benefits
Plug-n-Play Turbo Ring and Turbo Chain with fast recovery time 
 
(under 20 ms)
IGMP Snooping, QoS, IEEE 802.1Q VLAN, SNMPv1/v2c/v3, RMON 
 
supported
Automatic warning by exception through e-mail, relay output
 
User-friendly web-based configuration and management
 
ABC-01 (Automatic Backup Configurator) for system configuration 
 
backup (optional accessory)
Technology
Standards: 
IEEE 802.3 for 10BaseT 
IEEE 802.3u for 100BaseT(X) and 100BaseFX 
IEEE 802.3x for Flow Control 
IEEE 802.1D-2004 for Spanning Tree Protocol* 
IEEE 802.1w for Rapid STP 
IEEE 802.1p for Class of Service 
IEEE 802.1Q for VLAN Tagging
Protocols: IGMPv1/v2, GMRP, GVRP, SNMPv1/v2c/v3, DHCP Server/
Client, TFTP, SNTP, SMTP, RARP, RMON, HTTP, Telnet, Syslog, DHCP 
Option 66/67/82, BootP, LLDP, Modbus/TCP, IPv6, NTP Server/Client* 
MIB: MIB-II, Ethernet-Like MIB, P-BRIDGE MIB, Bridge MIB, RSTP 
MIB, RMON MIB Group 1, 2, 3, 9
Flow Control: IEEE 802.3x flow control, back pressure flow control
Switch Properties
MAC Table Size: 8 K
Packet Buffer Size: 1 Mbit
Interface 
Fiber Ports: 100BaseFX ports (SC/ST connector)
RJ45 Ports: 10/100BaseT(X) auto negotiation speed, Full/Half duplex 
mode, and auto MDI/MDI-X connection
Console Port: RS-232 (RJ45 connector)
DIP Switches: Turbo Ring, Master, Coupler, Reserve
LED Indicators: PWR1, PWR2, FAULT, MSTR/HEAD, CPLR/TAIL, 
10/100M
Alarm Contact: 1 relay output with current carrying capacity of 1 A @ 
24 VDC 
Optical Fiber
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
Power Requirements
Input Voltage: ±24/±48 VDC (-60 to -19 VDC or 19 to 60 VDC), 
redundant dual inputs (mixing power polarity systems is prohibited)
Input Current: 0.32 A @ 24 V
Inrush Current:  
63 A @ 24 V 
82 A @ 48 V
Overload Current Protection: Present
Connection: 1 removable 6-contact terminal block
Reverse Polarity Protection: Present