Moxa Technologies AWK-3121-SSC-RTG User manual

2014 Moxa Inc. All rights reserved.
Reproduction without permission is prohibited.
P/N: 1802031210042
AWK-3121-SSC-RTG
Quick Installation Guide
Moxa AirWorks
Third Edition, May 2014

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Overview
Moxa’s AWK-3121-SSC-RTG Access Point/Client is ideal for applications
that are hard to wire, too expensive to wire, or use mobile equipment that
connects over a TCP/IP network. The AWK-3121-SSC-RTG is rated to
operate at temperatures ranging from -25 to 60°C for standard models
and -40 to 75°C for extended temperature models, and is rugged enough
for any harsh industrial environment. Installation is easy, with either
DIN-Rail mounting or distribution boxes. The DIN-Rail mounting ability,
wide operating temperature range, and IP30 housing with LED indicators
make the AWK-3121-SSC-RTG a convenient yet reliable solution for any
industrial wireless application.
Package Checklist
Moxa’s AWK-3121-SSC-RTG is shipped with the following items. If any of
these items is missing or damaged, please contact your customer service
representative for assistance.
•1 AWK-3121-SSC-RTG
•2 dual-band omni-directional antennas, 2 dBi, RP-SMA (male)
•1 Quick Installation Guide
•1 Software CD
•1 Moxa Product Warranty Booklet
•1 Cable Holder with a Screw
•3 Protective Caps
NOTE
Antennas are not included and should be purchased separately.
The AWK is certified
with 2dBi omni-directional antennas with
QMA to RP-SMA adaptors.
Installation and Configuration
Before installing the AWK-3121-SSC-RTG, make sure that all items in the
Package Checklist are in the box. In addition, you will need access to a
notebook computer or PC equipped with an Fiber port. The
AWK-3121-SSC-RTG has a default IP address that you must use when
connecting to the device for the first time.
Step 1: Select the power source
The AWK-3121-SSC-RTG can be powered by a DC power input.
Step 2: Connect the AWK-3121-SSC-RTG to a notebook or
PC
Since the AWK-3121-SSC-RTG supports 100BaseFX, you can use either a
media converter or fiber Ethernet switch to connect the
AWK-3121-SSC-RTG to the notebook. The 100M LED on the
AWK-3121-SSC-RTG will light up when the connection is established.

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Step 3: Set up the computer’s IP address
Set an IP address on the same subnet as the AWK-3121-SSC-RTG. Since
the AWK-3121-SSC-RTG’s default IP address is 192.168.127.253, and
the subnet mask is 255.255.255.0, you should set the IP address of the
computer to 192.168.127.xxx and subnet mask to 255.255.255.0.
Step 4: Use the web-based manager to configure
AWK-3121-SSC-RTG
Open your computer’s web browser and then type
http://192.168.127.253 in the address field to access the homepage
of the web-based management. Before the homepage opens, you will
need to enter the user name and password. For first-time configuration,
enter the default user name and password and then click on the Login
button:
User name: admin
Password: root
ATTENTION
For security reasons, we strongly
recommend changing the
password. To do so,
select Maintenance

Password
, and then
follow the on-screen instructions.
Step 5: Select the operation mode for the
AWK-3121-SSC-RTG
By default, the AWK-3121-SSC-RTG’s operation mode is set to AP. You
can change the setting in Wireless Settings Basic Wireless
Settings if you would like to use the Client mode.
NOTE
To make the change effective, you must click Save Configuration
to save the change or Restart ( Save and Restart button to apply
all changes.

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Panel Layout of the AWK-3121-SSC-RTG
1. Grounding screw
2.
Terminal block for PWR1, PWR2,
relay, DI1, and DI2
3. Reset button
4. Heat dissipation orifices
5. System LEDs: PWR1, PWR2,
FAULT, and STATE LEDs
6. LEDs for signal strength
7. WLAN LEDs: CLIENT BRIDGE
(no function), and WLAN LEDs
8. RS-232 console port
9. 100BaseFX fiber Port
10.
MAIN antenna port
11.
AUX antenna port
12.
Model name
13.
Screw hole for wall mounting kit
14.
DIN-Rail mounting kit

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Mounting Dimensions
DIN-Rail Mounting
The aluminum DIN-Rail attachment plate should be fixed to the back
panel of the AWK-3121-SSC-RTG when you take it out of the box. If you
need to reattach the DIN-Rail attachment plate to the
AWK-3121-SSC-RTG, 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 AWK-3121-SSC-RTG from the DIN-Rail, simply reverse
Steps 1 and 2.

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Wall Mounting (optional)
For some applications, it may be more convenient to mount the
AWK-3121-SSC-RTG to a wall, as illustrated below.
STEP 1:
Remove the aluminum
DIN
-Rail attachment plate
from the
AWK
-3121-SSC-RTG, and
then attach the wall mount
plates with M3 screws, as
shown in the adjacent
diagrams.
STEP 2:
Mounting the
AWK-3121-SSC-RTG
to a wall requires 4
screws. Use the
AWK-3121-SSC-RTG
device, 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.
Do not screw the screws in all the way—leave a space of about 2 mm to
allow room for sliding the wall mount panel between the wall and the
screws.
NOTE
Test the screw head and shank size by inserting the screw into
one of the keyhole shaped apertures of the Wall Mounting Plates
before it is screwed into the wall.
STEP 3:
Once the screws are fixed into
the wall, insert the four screw
heads through the large
opening of the
keyhole
-shaped apertures,
and then slide the
AWK
-3121-SSC-RTG
downwards, as indicated to
the right. Tighten the four
screws for added stability.

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WARNING
•
This equipment is intended to be used in a Restricted Access
Location, such as a dedicated computer room. Access can
only be gained by SERVICE PERSONS or by USERS who have
been instructed about the fact that the metal chassis of the
equipment is extremely hot and may cause burns.
•
Service persons or users have to pay special attention and
take special precaution before handling the equipment.
•
Access is to be controlled through the use of a lock and key or
a security identity system, controlled by the authority
responsible for the location. Only authorized, well-trained
professionals are allowed to access the restricted access
location.
•
External metal parts are hot!! Pay special attention or use
special protection before handling.
Wiring Requirements
WARNING
Safety First!
Be sure to disconnect the power cord before installing and/or
wiring your Moxa AWK-3121-SSC-RTG.
WARNING
Safety First!
Calculate the maximum possible current in each power wire and
common wire. Observe all electrical codes dictating the
maximum current allowed for each wire size.
If the current goes above the maximum ratings, 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 separate.
•It is strongly advised that you label wiring to all devices in the system
when necessary.

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ATTENTION
This product is intended to be supplied by a Listed Power Unit
marked
“Class 2” or “LPS” and rated O/P: 12 to 48 VDC
, minimum
6 W (12 V/0.494 A to 48V/0.121 A), 25°C.
ATTENTION
Make sure
the external power adapto
r (includes power cords and
plug assemblies) provided with the unit is certified and suitable
for use in your country.
Grounding the Moxa AWK-3121-SSC-RTG
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.
ATTENTION
This product is intended to be mounted to a well
-grounded
mounting surface, such as a metal panel.
Wiring the Redundant Power Inputs
The top two pairs of contacts of the 10-contact terminal block connector
on the AWK-3121-SSC-RTG’s top panel are used for the
AWK-3121-SSC-RTG’s two DC inputs. Top and front views of the terminal
block connector is 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
the AWK-3121-SSC-RTG’s top panel.
ATTENTION
Before connecting the
AWK-3121-SSC-RTG to the DC power
inputs, make sure the DC power source voltage is stable.

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Wiring the Relay Contact
The AWK-3121-SSC-RTG has one relay output, which consists of the two
contacts of the terminal block on the AWK-3121-SSC-RTG’s top panel.
Refer to the previous 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. These relay contacts are
used to indicate user-configured events. The two wires attached to the
Relay contacts form an open circuit when a user-configured event is
triggered. If a user-configured event does not occur, the Relay circuit will
be closed.
Wiring the Digital Inputs
The AWK-3121-SSC-RTG has two sets of digital input—DI1 and DI2. Each
DI comprises two contacts of the 10-pin terminal block connector on the
AWK-3121-SSC-RTG’s top panel. You can refer to the “Wiring the
Redundant Power Inputs” 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.
Cable Holder Installation (Optional)
You can attach the cable holder to the bottom of the AWK-3121-SSC-RTG.
This helps to keep cabling neat and avoid accidents that result from
untidy cables.
STEP 1:
Screw the cable holder onto the bottom of the
AWK
-3121-SSC-RTG.
STEP 2:
After mounting the
AWK-3121-SSC-RTG and plugging in the fiber
cable,
tighten the cable along the device and wall.

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Communication Connections
100BaseFX Fiber Port Connection
The concept behind the SC port and cable is quite straightforward.
Suppose you are connecting devices 1 and 2; contrary to electrical signals,
optical signals do not need a circuit in order to transmit data.
Consequently, one of the optical lines is used to transmit data from device
1 to device 2, and the other optical line is used to transmit data from
device 2 to device 1, for full-duplex transmission. Remember to connect
the Tx (transmit) port of device 1 to the Rx (receive) port of device 2, and
vice versa. 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-B, as illustrated below,
or (A1-to-A1 and B1-to-B2…).
SC-Port Pinouts
SC-Port to SC-Port Cable Wiring
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.
RS-232 Connection
The AWK-3121-SSC-RTG has one RS-232 (8-pin RJ45) console port
located on the front panel. Use either an RJ45-to-DB9 or RJ45-to-DB25
cable to connect the Moxa AWK-3121-SSC-RTG’s console port to your
PC’s COM port. You may then use a console terminal program to access
the AWK-3121-SSC-RTG for console configuration.
Console Pinouts for 10-pin or 8-pin RJ45
10-Pin
Description
8-Pin
1
-----
2
DSR
1
3
RTS
2
4
GND
3
5
TxD
4
6
RxD
5
7
DCD
6
8
CTS
7
9
DTR
8
10
-----