Moxa Technologies EDS-G308 Series User manual

P/N: 1802003082018
*1802003082018*
EDS-G308 Series
Quick Installation Guide
Moxa EtherDevice Switch
Version 6.3, June 2021
Technical Support Contact Information
www.moxa.com/support

2021 Moxa Inc. All rights reserved.

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Overview
The EDS-G308 Series is equipped with 8 Gigabit Ethernet ports and up
to 2 fiber optic ports, making it ideal for applications that demand high
bandwidth. The EDS-G308 series provides an economical solution for
your industrial Gigabit Ethernet connection, and the built-in relay
warning function alerts maintainers when power failures or port breaks
occur. In addition, the 4-pin DIP switches can be used to configure the
following features: broadcast storm protection (BSP), jumbo frame rate
(Jumbo), and IEEE 802.3az energy saving. The EDS-G308 series
includes 2 models: one with an operating temperature range of -10 to
60°C, and the other one with an extended operating temperature range
of -40 to 75°C. These 2 models have passed a 100% burn-in test to
ensure that they fulfill the special needs of industrial automation
control. The EDS-G308 series can be easily installed with DIN-Rail
mounting as well as distribution boxes.
NOTE
Throughout this Hardware Installation Guide, we use EDS
as an
abbreviation for Moxa Eth
erDevice Switch:
EDS = Moxa EtherDevice Switch
Package Checklist
Your EDS is shipped with the following items. If any of these items is
missing or damaged, please contact your customer service
representative for assistance.
•Moxa EtherDevice™ Switch
•Quick installation guide (printed)
•Warranty card
•Protective caps for unused ports
Features
High Performance Network Switching Technology
•10/100/1000BaseT(X) (RJ45), auto negotiation speed, F/H duplex
mode, and auto MDI/MDI-X connection, 100/1000 BaseSFP slot.
•IEEE 802.3/802.3u/802.3ab/802.3z/802.3x.
•Store and Forward switching process type, 8K MAC address entries.
Industrial Grade Reliability and Efficiency
•Power failure, port break alarm by relay output
•Redundant dual 12/24/48 VDC power inputs
•IEEE 802.3az energy-efficient Ethernet settings by DIP switch
•Broadcast storm protection and jumbo frame setting by DIP switch
Rugged Design
•Operating temperature range of -10 to 60°C, or extended operating
temperature of -40 to 75°C for “T” models
•IP30, rugged high-strength case
•DIN-rail or panel mounting ability

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Panel Layout of EDS-G308/EDS-G308-2SFP
1. Grounding screw
2. Terminal block for power input
(PWR1, PWR2) and relay output
3. Power input PWR1 LED
4. Power input PWR2 LED
5. Fault LED
6. TP port’s 10/100 Mbps LED
TP port’s 1000 Mbps LED
SFP port’s 100/1000 Mbps LED
(Amber: 100M; Green: 1000M)
7. Port number
8. 10/100/1000BaseT(X) Port
9. 100/1000Base SFP slot
10.
Model Name
11.
DIP switches
12.
Heat dissipation orifices
13.
Screw hole for wall mounting kit
14.
DIN-rail Kit

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Mounting Dimensions
Unit = mm (inch)

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DIN-Rail Mounting
The aluminum DIN-rail attachment plate should already be fixed to the
back panel of the EDS when you take it out of the box. If you need to
reattach the DIN-rail attachment plate, make sure the stiff metal spring
is situated towards the top, as shown in the figures below.
STEP 1: Insert the top of the
DIN
-rail into the slot just below
the stiff metal spring.
STEP 2: The DIN-rail attachment
unit will snap into place as shown
below.
To remove the DIN-rail from the EDS, simply reverse Steps 1 and 2.
In order to ensure proper installation, please insert the DIN-rail below
the metal spring.
Wall Mounting (optional)
For some applications, you will find it convenient to mount the EDS on
the wall, as illustrated below.
STEP 1:
Remove the aluminum DIN-
rail attachment plate from
the EDS’s rear panel, and
then attach the wall mount
plates, as shown in the
f
igure.
STEP 2:
Mounting
the EDS on the wall requires 4 screws. Use
the
switch, with wall mount plates attached, as a
guide to mark the correct locations of the 4 screws.
The heads of the screws should be less than 6.0 mm
in diameter, and the shafts should be less than
3.5
mm in diameter, as shown in the figure at the right.

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NOTE
Before tightening screws into the wall, make sure the screw
head and shank size are suitable by inserting the screw into
one of the keyhole
-shaped apertures of the Wall Mounting
Plates.
Do not screw the screws in all the way—leave about 2 mm to allow
room for sliding the wall mount panel between the wall and the screws.
STEP 3:
Once the screws are fixed in the
wall, insert the four screw heads
through the large parts of the
keyhole
-shaped apertures, and
then slide the EDS downwards, as
indicated. Tighten the four screws
for
added stability.
Hazardous Location Information
Logo
Model/Rating
Model Name.
Rated Supply Voltage and Current
EDS-G308,
EDS-G308-T
12-48 VDC, Class 2, Maximum 0.8 A
EDS-G308-2SFP,
EDS-G308-2SFP-T
12-48 VDC, Class 2, Maximum 0.9 A
Relay Output: 24 VDC, 1 A, resistive load.
Serial
Number
ATEX
information
II 3 G
DEMKO
10 ATEX 0917324X
Ex nA nC IIC T4 Gc
Ambient Range: -40°C ≤ Tamb ≤ 75°C (With -T)
Ambient Range: -10°C ≤ Tamb ≤ 60°C (Without -T)
WARNING: DO NOT SEPARATE WHEN ENERGIZED
Rated Cable Temp ≥ 90°C
Address of
manufacturer
No. 1111, Heping Rd., Bade Dist., Taoyuan City 334004,
Taiwan
Standards and Certifications
Hazardous Location EN 60079-0:2012+A11:2013
EN 60079-15:2010/

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Conditions of safe use
•Transient protection shall be provided to limit the peak rated
voltage to a maximum of 140% of the peak-rated voltage.
•When end users are providing Optical SFP Communications
modules, these must be limited to Laser Class 1 only.
•The equipment shall only be used in an area of not more than
pollution degree 2, as defined in EN 60664-1.
•The equipment shall be installed in an IP 54 casing in accordance
with the EN 60079-15 standard and should only be accessible by
the use of a tool.
Wiring Requirements
WARNING
Safety First!
Turn
the power off before disconnecting modules or wires. The
proper
power supply voltage is listed on the product label.
Check the voltage of your power source to make sure you are
using t
he correct voltage. Do NOT use a voltage greater than
what
is specified on the product label.
These devices must be supplied by a
n SELV source as defined
in the Low Voltage Directive 2014/35/EU and 2014/30/EU.
WARNING
Safety First!
Calculate the maximum possible current in each power wire and
common wire. Observe all electrical codes dictating the
maximum current allowable for each wire size.
If the current goes above the maximum r
atings, the wiring
could overheat, causing serious damage to your equipment.
You should also pay attention to the following items:
•Use separate paths to route wiring for power and devices. If power
wiring and device wiring paths must cross, make sure the wires are
perpendicular at the intersection point.
NOTE: Do not run signal or communications wiring and power
wiring in the same wire conduit. To avoid interference, wires with
different signal characteristics should be routed separately.
•You can use the type of signal transmitted through a wire to
determine which wires should be kept separate. The rule of thumb
is that wiring with similar electrical characteristics can be bundled
together.
•Keep input wiring and output wiring separated.
•It is strongly advised that you label wiring for all devices in the
system when necessary.
Grounding Moxa EtherDevice Switch
Grounding and wire routing help limit the effects of noise due to
electromagnetic interference (EMI). Run the ground connection from
the ground screw to the grounding surface prior to connecting devices.

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ATTENTION
This product is intended to be mounted to a well
-grounded
mounting surface, such as a metal panel.
We suggest using the cable type A
WG min. 18 for grounding
the EDS-G308.
Wiring the Alarm Contact
The Alarm Contact consists of the two middle contacts of the terminal
block on the EDS’s top panel. You may refer to the next section for
detailed instructions on how to connect the wires to the terminal block
connector, and how to attach the terminal block connector to the
terminal block receptor.
In this section, we explain the meaning of the two contacts used to
connect the Alarm Contact.
FAULT: The two middle contacts of the 6-
contact
terminal block connector are used to
detect both power faults and port faults. The
two wires attached to the Fault contacts form
a
n open circuit when:
1. EDS has lost power from one of the DC
power inputs.
OR
2. The PORT ALARM DIP switch for one of
the ports is set to ON, but the port is
not connected properly.
If
neither of these two conditions is satisfied,
the Fault circuit will be closed.
Wiring the Redundant Power Inputs
The top two contacts and the bottom two contacts of the 6-contact
terminal block connector on the EDS’s top panel are used for the EDS’s
two AC/ DC inputs. Top and front views of one of the terminal block
connectors are shown here.
STEP 1:
Insert the negative/positive DC
wires into the
V-/V+ terminals.
STEP 2:
To keep the DC wires from pulling
loose, use a small flat
-blade screwdriver to
tighten the wire
-clamp screws on the front of
the terminal block connector.
STEP 3:
Insert the plastic terminal block
connector prongs into the terminal block
receptor, which is
located on EDS’s top panel.

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ATTENTION
Before connecting the EDS to the DC power inputs, make sure
the DC power source voltage is stable.
We suggest using a copper conductor with the cable type
-
AWG 18
-24 and the corresponding pin type cable terminals. In
addition, the wire must be able to withstand at least 105°C.
The wire must be able to withstand at least 105
°C and the
torque value should be 4.5 lb
-in (0.51 N-m).
There should only be o
ne individual conductor in a clamping
point.
Communication Connections
EDS-G308 switches have 2 types of communications port:
•10/100/1000BaseT(X) Ethernet ports
•Combination 10/100/1000T(X) Ethernet or 100/1000BaseSFP fiber
ports
10/100/1000BaseT(X) Ethernet Port Connection
The 10/100/1000BaseT(X) ports located on Moxa EtherDevice Switch’s
front panel are used to connect to Ethernet-enabled devices. Most users
will choose to configure these ports for Auto MDI/MDI-X mode, in which
case the port’s pinouts are adjusted automatically depending on the
type of Ethernet cable used (straight-through or cross-over), and the
type of device (NIC-type or HUB/Switch-type) connected to the port.
In what follows, we give pinouts for both MDI (NIC-type) ports and
MDI-X (HUB/Switch-type) ports. We also give cable wiring diagrams for
straight-through and cross-over Ethernet cables.
10 /100Base T(x) RJ45 Pinouts
MDI Port Pinouts
MDI-X Port Pinouts
8-pin RJ45
Pin
Signal
1
Tx+
2
Tx-
3
Rx+
6
Rx-
Pin
Signal
1
Rx+
2
Rx-
3
Tx+
6
Tx-
1000BaseT RJ45 Pinouts
Pin
MDI
MDI-X
1
BI_DA+
BI_DB+
2
BI_DA-
BI_DB-
3
BI_DB+
BI_DA+
4
BI_DC+
BI_DD+
5
BI_DC-
BI_DD-
6
BI_DB-
BI_DA-
7
BI_DD+
BI_DC+
8
BI_DD-
BI_DC-

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RJ45 (8-pin) to RJ45 (8-pin) Straight-Through Cable Wiring
RJ45 (8-pin) to RJ45 (8-pin) Cross-Over Cable Wiring
100/1000BaseSFP (mini-GBIC) Fiber Port
The Fiber ports on the EDS-G308 series are SFP type slots, which
require 100M or 1G mini-GBIC fiber transceivers to work properly.
Moxa provides complete transceiver models for various distance
requirements.
The concept behind the LC port and cable is quite straightforward.
Suppose you are connecting devices I and II. Unlike electrical signals,
optical signals do not require a circuit in order to transmit data.
Consequently, one of the optical lines is used to transmit data from
device I to device II, and the other optical line is used to transmit data
from device II to device I, for full-duplex transmission.
Remember to connect the Tx (transmit) port of device I to the Rx
(receive) port of device II, and the Rx (receive) port of device I to the
Tx (transmit) port of device II. If you make your own cable, we suggest
labeling the two sides of the same line with the same letter (A-to-A and
B-to-B, as shown below, or A1-to-A2 and B1-to-B2).
LC-Port Pinouts
LC-Port to LC-Port Cable Wiring

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ATTENTION
This is a Class 1 Laser/LED product. To avoid causing serious
damage to your eyes, do not stare directly into the Laser Beam.
Redundant Power Inputs
Both power inputs can be connected simultaneously to live DC power
sources. If one power source fails, the other live source acts as a
backup, and automatically supplies all of the EDS’s power needs.
Alarm Contact
The Moxa EtherDevice Switch has one Alarm Contact located on the top
panel. For detailed instructions on how to connect the Alarm Contact
power wires to the two middle contacts of the 6-contact terminal block
connector, see the Wiring the Alarm Contact section on page 7. A
typical scenario would be to connect the Fault circuit to a warning light
located in the control room. The light can be set up to switch on when a
fault is detected.
The Alarm Contact has two terminals that form a Fault circuit for
connecting to an alarm system. The two wires attached to the Fault
contacts form an open circuit when (1) EDS has lost power from one of
the DC power inputs, or (2) one of the ports, for which the
corresponding PORT ALARM DIP switch is set to ON, is not properly
connected.
If neither of these two conditions occurs, the Fault circuit will be closed.
DIP Switch Settings
The default setting for each DIP switch is OFF.
The following table explains the effect of setting
the DIP switches to the ON positions.
DIP Switch
Setting
Description
BSP
ON
Enables broadcast storm protection
OFF
Disables broadcast storm protection
Jumbo Frame
ON
Enables jumbo frame function
OFF
Disables jumbo frame function
802.3az
ON
Enables the energy-efficient Ethernet function
OFF
Disables the energy-efficient Ethernet function

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DIP Switch
Setting
Description
Port Alarm
ON
Enables the corresponding PORT Alarm. If the
port’s link fails, the relay will form an open
circuit and the fault LED will light up
OFF
Disables the corresponding PORT Alarm. If the
port’s link fails, the relay will form a closed
circuit and the fault LED will never light up
ATTENTION
To actively update DIP switch settings, power off and then
power on the EDS.
LED Indicators
The front panel of the Moxa EtherDevice Switch contains several LED
indicators. The function of each LED is described in the table below.
LED
Color
State
Description
PWR1 AMBER
On
Power is being supplied to power input
PWR1
Off
Power is not being supplied to power
input PWR1
PWR2 AMBER
On Power is being supplied to power input
PWR2
Off
Power is not being supplied to power
input PWR2
FAULT RED
On
When the corresponding PORT alarm is
enabled, and the port’s link is inactive.
Off
When the corresponding PORT alarm is
enabled and the port’s link is active, or
when the corresponding PORT alarm is
disabled.
10/100M
(TP port) AMBER
On
TP port’s 10/100 Mbps link is active.
Blinking
Data is being transmitted at 10/100
Mbps.
Off
TP Port’s 10/100 Mbps link is inactive.
1000M
(TP port) GREEN
On
TP port’s 1000 Mbps link is active.
Blinking
Data is being transmitted at 1000
Mbps.
Off
TP Port’s 1000 Mbps link is inactive.
100/1000M
(SFP port)
AMBER
On
SFP port’s 100 Mbps link is active.
Blinking
Data is being transmitted at 100 Mbps.
Off
SFP port 100 Mbps link is inactive.
GREEN
On
SFP port’s 1000 Mbps link is active.
Blinking
Data is being transmitted at 1000
Mbps.
Off
SFP port’s 1000 Mbps link is inactive.

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Auto MDI/MDI-X Connection
The Auto MDI/MDI-X function allows users to connect the EDS’s
10/100/1000BaseT(X) ports to any kind of Ethernet device, without
paying attention to the type of Ethernet cable being used for the
connection. This means that you can use either a straight-through cable
or cross-over cable to connect the EDS to Ethernet devices.
Triple Speed Functionality and Switching
The EDS’s 10/100/1000 Mbps RJ45 switched port auto negotiates with
the connected device for the fastest data transmission rate supported
by both devices. The EDS is a plug-and-play device, so software
configuration is not required at installation or during maintenance.
The half/full duplex mode for the RJ45 switched ports is user dependent
and changes (by auto-negotiation) to full or half duplex, depending on
which transmission speed is supported by the attached device.
Auto-Negotiation and Speed Sensing
The EDS’s RJ45 Ethernet ports independently support auto-negotiation
for transmission speeds of 10 Mbps, 100 Mbps, and 1000 Mbps, with
operation according to the IEEE802.3 standard.
This means that some nodes could be operating at 10 Mbps, while at
the same time, other nodes are operating at 100 Mbps or 1000 Mbps.
Auto-negotiation takes place when an RJ45 cable connection is made,
and then each time a LINK is enabled. The EDS advertises its capability
for using 10 Mbps, 100 Mbps, or 1000 Mbps transmission speeds, with
the device at the other end of the cable expected to advertise similarly.
Depending on what type of device is connected, this will result in
agreement to operate at a speed of 10 Mbps, 100 Mbps, or 1000 Mbps.
If an EDS’s RJ45 Ethernet port is connected to a non-negotiating
device, it will default to 10 Mbps speed and half-duplex mode, as
required by the IEEE802.3 standard.
Specifications
Specifications and Pin Assignments
Technology
Standards IEEE 802.3 for 10BaseT,
IEEE 802.3u for 100BaseT(X) and 100Base FX,
IEEE 802.3ab for 1000BaseT,
IEEE 802.3z for 1000BaseX
IEEE 802.3az for Energy-Efficient Ethernet
Flow Control
IEEE 802.3x flow control, back pressure flow
control
Interface
RJ45 Ports
10/100/1000BaseT(X) auto negotiation speed
Fiber Ports
100Base FX or 1000BaseX SFP slot SFP slot
LED Indicators
PWR1, PWR2, FAULT, 10/100M/1000M
DIP Switch
Port break alarm, broadcast storm protection,
jumbo frame, IEEE 802.3az
Alarm Contact One relay output with current carrying capacity
of 1A @ 24 VDC

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Power
Input Voltage
12/24/48 VDC, redundant dual inputs
Input Current EDS-G308: 0.8 A @ 12-48 VDC
EDS-G308-2SFP: 0.9 A @ 12-48 VDC
Connection
One removable 6-pin terminal block
Overload Current
Protection
Present
Reverse Polarity
Protection
Present
Mechanical
Casing
IP30 protection, metal case
Dimension
(W x H x D)
52.85 x 135 x 105 mm (2.08 x 5.31 x 4.13 in)
Weight
880 g (1.94 lb)
Installation
DIN-rail, Wall Mounting (optional kit)
Environmental
Operating
Temperature
-10 to 60°C (14 to 140°F)
-40 to 75°C (-40 to 167°F) for -T models
Storage Temperature
-40 to 85°C (-40 to 185°F)
Ambient Relative
Humidity
5 to 95% (non-condensing)
Regulatory Approvals
Safety
UL 508, EN 62368-1
EMI
FCC Part 15, CISPR 32, EN 55032 class A
EMS EN 61000-4-2 (ESD), Level 3
EN 61000-4-3 (RS), Level 3
EN 61000-4-4 (EFT), Level 3
EN 61000-4-5 (Surge), Level 3
EN 61000-4-6 (CS), Level 3
EN 61000-4-8
EN 61000-4-11
EN 61000-4-12
Shock
IEC 60068-2-27
Free Fall
IEC 60068-2-32
Vibration
IEC 60068-2-6
Note: Please check Moxa’s website for the latest certification status.
MTBF (mean time between failures)
Time
2,260,195 hours
Standard
Telcordia (Bellcore), GB
Warranty
Warranty Period
5 years
Details
www.moxa.com/warranty