
2014 Moxa Inc. All rights reserved.
P/N: 1802009030012
EDR-G902/G903
Hardware Installation Guide
Moxa EtherDevice™ Router
Third Edition, May 2014

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Package Checklist
The Moxa EtherDevice Router is shipped with the following items. If any of
these items is missing or damaged, please contact your customer service
representative for assistance.
• 1 EtherDevice Router
• Hardware Installation Guide
• CD-ROM with User’s Manual and Windows utility
• Moxa product warranty statement
• RJ45 to DB9 console port cable
• Protective caps for unused ports
Features
Advanced Industrial Networking Capability
• Router/Firewall/VPN all in one.
• High performance Gigabit copper/fiber combo port.
• Supports 1 WAN, 1 LAN, and 1 user-configurable WAN or DMZ
interface (EDR-G903).
• Supports 1 WAN and 1 LAN (EDR-G902)
• Firewall with Quick Automation Profile for Fieldbus protocols.
• Network address translation (N-to-1, 1-to-1, and port forwarding).
• Intelligent PolicyCheck and SettingCheck tools.
• -40 to 75°C operating temperature (T models).

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Panel Views of EtherDevice Router
1. WAN1, DMZ/WAN2, LAN port:
10/100/1000 BaseT(X) or
100/1000Base SFP slot combo
ports
2. Power input PWR1 LED
3. Power input PWR2 LED
4. Fault LED
5. 10/100/1000BaseT(X) LED
indicator
6. LED for DMZ/WAN2 port
-G902 Front Panel:
1. WAN, LAN port 10/100/1000
BaseT(X) or 100/1000Base SFP
slot combo ports
2. Power input PWR1 LED
3. Power input PWR2 LED
4. Fault LED
5. 10/100/1000BaseT(X) LED
indicator

1. Grounding screw
2. 4-pin terminal block for PWR 1,
PWR 2
3. 4-pin terminal block for DI and
Relay
4. RS-232 console port
1. Terminal block
2. DIN-Rail kit
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 EtherDevice Router when you take it out of the box. If
you need to reattach the DIN-Rail attachment plate to the EtherDevice
Router, make sure the stiff metal spring is situated towards the top, as
shown in the following figures.
STEP 1—Insert the top of the
-Rail into the slot just below
STEP 2—The DIN-Rail attachment
unit will snap into place as shown in
the following illustration.
To remove the EtherDevice Router from the DIN-Rail, simply reverse
Steps 1 and 2 above.
Wiring Requirements
Do not disconnect modules or wires unless power has been
switched off or the area is known to be non
devices may only be connected to the supply voltage shown on
the type plate. The device
s are designed for operation with a
oltage. Thus, they may only be connected to
the supply voltage connections and to the signal contact with the
S
afety Extra-Low Voltages (SELV) in compliance with IEC950/
-in type. When the unit is installed in another
piece of equipment, the equipment enclosing the unit must
comply with fire enclosure regulation IEC 60950

Be sure to disconnect the power cord before installing and/or
wiring your Moxa EtherDevice
Calculate the maximum possible current in each power wire and
common wire. Observe all electrical code
maximum current allowable for each wire size.
If the current goes above the maximum ratings, the wiring could
overheat, causing serious damage to your equipment.
Please read and follow these guidelines:
• 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
through 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 sharing similar electrical characteristics can be bundled
together
• You should separate input wiring from output wiring
• We advise that you label the wiring to all devices in the system.
Grounding the Moxa EtherDevice Router
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.
This product is intended to be mounted
mounting surface such as a metal panel.

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Wiring the Relay Contact
The EtherDevice Router has one set of relay outputs. This relay contact
uses one contacts of the terminal block on the EtherDevice Router’s top
panel. 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 illustrate the meaning of the contact used to connect
the relay contact.
right contacts of the 4-pin terminal block
connector are used to detect user
events. The two wires attached to the
contacts form an open circuit when a
user
-configured event is triggered. If a
-configured event does not occur, the fault
Wiring the Redundant Power Inputs
The EtherDevice Router has two sets of power inputs—power input 1 and
power input 2. The 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, respectively.
STEP 2: To keep the DC wires from pulling loose,
use a small flat
ade screwdriver to tighten the
wire
-clamp screws on the front of the terminal
Insert the plastic terminal block
connector prongs into the terminal block
receptor, which is located on

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Wiring the Digital Inputs
The EtherDevice Router has one set of digital input, DI. The DI consists of
two left contacts of the 4-pin terminal block connector on the EtherDevice
Router’s top panel, which are used for the DC inputs. The top and front
views of one of the terminal block connectors are shown here.
STEP 1: Insert the negative (ground)/positive
DI wires into the
┴/I terminals, respectively.
STEP 2: To keep the DI wires from pulling loose,
use a small flat-blade screwdriver to tighten the
wire
-clamp screws on the front of the terminal
Insert the plastic terminal block
connector prongs into the terminal block
receptor, which is located on
Communication Connections
Each EtherDevice Router has 2 types of communication port:
1. 1 RJ45 console port (RS-232 interface)
2. 3 combination 10/100/1000T(X)/1000BaseSFP ports (EDR-G903)
3. 1 combination 10/100/1000T(X)/1000BaseSFP port and 1
10/100/1000T(X) Ethernet port (EDR-G902)
RS-232 Connection
The EtherDevice Router has one RS-232 (10-pin RJ45) console port,
located on the top panel. Use either an RJ45-to-DB9 (see the cable
following wiring diagrams) to connect the EtherDevice Router’s console
port to your PC’s COM port. You may then use a console terminal program,
such as Moxa PComm Terminal Emulator, to access the EtherDevice
Router’s console configuration utility.
RJ45 (10-pin) Console Port Pinouts

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RJ45 (10-pin) to DB9 (F) Cable Wiring
10/100/1000BaseT(X) Ethernet Port Connection
The 10/100/1000BaseT(X) ports located on Moxa EtherDevice Router’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

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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 BaseFX or 1000BaseSFP Fiber Port
The Gigabit Ethernet ports on the EtherDevice Router are SFP slots, which
require 100BaseFX SFP or Gigabit 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 to LC-Port Cable Wiring

This is a Class 1 Laser/LED product. To avoid causing
damage to your eyes, do not stare directly into the Laser Beam.
LED Indicators
The front panel of the Moxa EtherDevice Router contains several LED
indicators. The function of each LED is described in the following table:
Power is being supplied to power
input P1 on the main module.
Off
Power is not being supplied to
power input P1 on the main
Power is being supplied to power
input P2 on the main module.
Off
Power is not being supplied to
power input P2 on the main
When a user-configured event is
triggered.
configured event has
not been triggered.
TP or FX port’s 10/100 Mbps link is
active.
Data is being transmitted at
10/100 Mbps.
TP or FX port’s 10/100 Mbps link is
inactive.
TP or FX port’s 1000 Mbps link is
active.
Data is being transmitted at 1000
Mbps.
TP or FX port’s 1000 Mbps link is
inactive.
WAN/DMZ
(EDR-G903
only)
AMBER
On
The WAN2/DMZ port is set to the
The WAN2/DMZ port is disabled.
The WAN2/DMZ port is set to the
“DMZ” function.
The WAN2/DMZ port is disabled.

Standards IEEE 802.3 for 10BaseT
IEEE 802.3u for 100BaseT(X) and 100BaseFX
IEEE 802.3ab for 1000BaseT(X)
IEEE 802.3z for 1000BaseX
SNMPv1/v2c/v3, DHCP Server/Client, TFTP,
NTP, HTTP, HTTPS, Telnet, SSH, Syslog, SMTP,
LLDP, PPPoE, PPTP, Dynamic DNS, QoS (
IEEE 802.3x flow control, back pressure flow
control
10/100/1000BaseT(X) auto negotiation speed
PWR1, PWR2, FAULT, 10/100/1000M,
DMZ/WAN
One relay output with current carrying capacity
of 1 A @ 24 VDC
• For state “1”: +13 to +30 V
• For state “0”: -30 to +3 V
• Max. input current: 8 mA
12/24/48 VDC redundant dual inputs
Overload Current
Protection
51.2 × 152 × 131.1 mm (2.02 × 5.98 × 5.16 in)
0 to 60°C (32 to 140°F), standard models
-40 to 75°C (-40 to 167°F) for -T models
-40 to 85°C (-40 to 185°F)
5 to 95% (non-condensing)
FCC Part 15, CISPR (EN55022); class A
IEC 61000-4-2 (ESD), level 3;
IEC 61000-4-3 (RS), level 3;
IEC 61000-4-4 (EFT), level 3;
IEC 61000-4-5 (Surge), level 3;
IEC 61000-4-6 (CS), level 3

Technical Support Contact Information
www.moxa.com/support
Moxa China (Shanghai office):
Toll