Moxa Technologies AirWorks AWK-3251A-M12-RCC Series User manual

P/N: 1802032510010
*1802032510010*
AWK-3251A-M12-RCC Series
Quick Installation Guide
Moxa AirWorks
Version 1.0, September 2022
Technical Support Contact Information
www.moxa.com/support

2022 Moxa Inc. All rights reserved.

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Overview
The AWK-3251A-M12-RCC Series is an industrial-grade AP/Client with
IEEE 802.11ac Wave 2 technology. This Series features concurrent
dual-band Wi-Fi data transmissions up to 400 Mbps (2.4 GHz mode)
and 867 Mbps (5 GHz mode) simultaneously, meeting the speed and
flexibility requirements for industrial applications. In addition, the built-
in dual band pass filter and the wide-temperature design ensure the
reliability and continuous operation in harsh environments. The dual
redundant DC power inputs enhance availability while PoE support
provides more flexibility for powering end devices and simplifying field-
site deployments.
Hardware Setup
This section covers the hardware setup for the AWK-3251A-M12-RCC.
Package Checklist
Moxa’s AWK-3251A-M12-RCC is shipped with the following items. If any
of these items is missing or damaged, please contact your customer
service representative for assistance.
• 1 x AWK-3251A-M12-RCC wireless AP/Client
• DIN-rail kit
• Cable holder with one screw
• Quick installation guide (printed)
• Warranty card
Optional Mounting Accessories (Sold Separately)
• Wall-mount kit including 6 screws (M3x6)

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Panel Layout of the AWK-3251A-M12-RCC Series
1. Grounding screw (M5)
2. Terminal blocks for PWR1,
PWR2, relay, DI 1 and DI 2
3. Reset button
4. Antenna connector 2
5. System LEDs: PWR1, PWR2,
PoE, SYSTEM, LAN, 2.4GHz,
5GHz
6. Signal strength indicator
7. Console port (RS-232, RJ45)
8. 10/100/1000BaseT(X) M12
LAN port
9. Antenna connector 1
10. Model name
11.
Screw holes for wall-
mounting
kit
12.
DIN-rail mounting kit
13.
Cable holder screw

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Mounting Dimensions
DIN-rail Mounting
When shipped, the metal DIN-rail mounting kit is fixed to the back
panel of the AWK-3251A-M12-RCC. Mount the AWK-3251A-M12-RCC on
to a corrosion-free mounting rail that adheres to the EN 60715
standard.
STEP 1:
Insert the upper lip of the DIN
-rail
kit into the mounting rail.
STEP 2:
Press the
AWK-3251A-M12-RCC
towards the mounting rail until it
snaps into place.

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To remove the AWK-3251A-M12-RCC from the DIN rail, do the
following:
STEP 1:
Pull down the latch on the DIN
-
rail kit with a screwdriver.
STEP 2 & 3:
Slightly pull the
AWK-3251A-
M12
-RCC forward and lift it up
to remove it from the mounting
rail.
Wall Mounting (Optional)
For some applications, it may be more convenient to mount the AWK-
3251A-M12-RCC to a wall, as illustrated below.
STEP 1:
Remove the aluminum DIN-rail attachment plate from the AWK-3251A-
M12-RCC, and then attach the wall-mounting plates with M3 screws, as
shown in the following diagrams.
STEP 2:
Mounting the
AWK-3251A-M12-RCC to a wall requires 2
screws. Use
the AWK-3251A-M12-RCC device, with
wall
-mounting plates attached, as a guide to mark the
correct locations of the
2 screws on the wall
. The heads
of the screws should be less than 6.0 mm in diameter,
the
shafts should be less than 3.5 mm in diameter,
and
the
screw length should be at least 15 mm, as sho
wn in
the figure on the right.
Do not drive the screws in all the way—leave a space of about 2 mm to
allow room for sliding the wall-mounting panel between the wall and
the screws.
NOTE
Test the screw head and shank size by inserting the screws
into
one of the keyhole shaped apertures of the wall
-mounting
plates before they are fixed to the wall.

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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-3251A-M12-RCC downwards, as indicated to the right.
Tighten the two screws for added stability.
WARNING
•
This equipment is intended to be used in a Restricted
Access Location, such as a dedicated computer room
where
only authorized service personnel or
users can gain access.
Such personnel must be instructed about the fact that the
metal chassis of the equipment is extremely hot and may
cause burns.
•
Service personnel or users have to pay special attention
and take special precautions before handling this
equipment.
•
Only authorized, well-trained professionals should be
allowed to access the restricted access location. Access
should be controlled by the authority responsible for the
location with lock and key or a security identity system.
•
External metal parts are hot!! Pay special attention or
use special protection before handling the equipment.
Wiring Requirements
WARNING
Safety First!
Be sure to disconnect the power cord before installing and/or
wiring your
AWK-3251A-M12-RCC.
Calculate the maximum possible current in each power wire and
common wire.
Observe all electrical codes that dictate 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.
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 crossing point.

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NOTE
Do not run signal or communications wiring and power wiring in
the same wire conduit. To avoi
d 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 that shares similar electrical characteristics can be
bundled together.
• Keep input wiring and output wiring separated.
• For future reference, you should label the wiring used for all of your
devices.
NOTE
If the device is powered by PoE, the PSE equipment
and cabling
should not be connected to outside facilities.
NOTE
The product is intended to be supplied by a
UL Listed Power
Unit marked "L.P.S." (or "Limited Power Source") and is rated
1) 12
-48 VDC, 2.2-
0.5A min. (supplied by power adapter) or 48
V
DC, 0.5A min. (supplied by PoE), Tma = 75 degree C. If you
need further
assistance with purchasing the power source,
please contact Moxa for further information.
NOTE
If using a Class I adapter, the power cord must be connected to
a socket-outlet with an earthing connection.
ATTENTION
Make sure
the external power adapter (includes power cords
and plug assemblies) provided with the unit is certified and
suitable for use in your country or region.
ATTENTION
DO NOT use a PoE Injector. Instead, use an IEEE 802.3af or
IEEE 802.3at
compliant PSE (Power Sourcing Equipment) for
PoE (Power over Ethernet) devices.
ATTENTION
The USB
interface is coded to only support Moxa’s ABC-02
dongle for troubleshooting or debugging purposes.
NOTE
This product can be deployed on vehicles as the control unit’s
wireless interface that collects data from different I/O devices
and transmits the data to vehicle dispatch centers.

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Grounding the AWK-3251A-M12-RCC
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.
The potential
difference between any two
grounding points must be zero. If
the potential difference is NOT zero, the
product could be
permanently damaged.
Installations with Cable Extended Antennas for Outdoor
Applications
If an AWK device or its antenna is installed in an outdoor location,
proper lightning protection is required to prevent direct lightning strikes
to the AWK device. In order to prevent the effects of coupling currents
from nearby lightning strikes, a lightning arrester should be installed as
part of your antenna system. Ground the device, antenna, as well as
the arrester properly to provide maximum outdoor protection for the
device.
Arrester Accessories
• SA-NMNF-02: Surge arrester, N-type (male) to N-type (female)
• SA-NFNF-02: Surge arrester, N-type (female) to N-type (female)
Terminal Block Pin Assignment
The AWK-3251A-M12-RCC comes with a 10-pin terminal block located
on the top panel of the device. The terminal block contains dual power
inputs, a relay output, and dual digital inputs. Refer to the following
figure and table for the detailed pin assignment.

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Pin
Definition
1
DC Power Input 1
2
3
DC Power Input 2
4
5
Relay Output
6
7
Digital Input 1
8
Digital Input GND
9
Digital Input 2
10
Digital Input GND
Wiring the Redundant Power Inputs
The first two pairs of contacts of the 10-contact terminal block
connector on the AWK-3251A-M12-RCC’s top panel are used for the
AWK-3251A-M12-RCC’s two DC inputs. The top view of the terminal
block connector is shown below.
STEP 1: Insert the negative/positive DC
wires into the
+/- terminals.
STEP
2: Insert the plastic terminal block
connector prongs into the terminal block
receptor, which is
located on the AWK-
3251A
-M12-RCC’s top panel.
NOTE
Before connecting the
AWK-3251A-M12-RCC’s
DC power inputs,
make
sure the DC power source voltage is stable.
•
The wiring for the input terminal block shall be installed by
a skilled person.
•
Wire type: Cu
•
Only use 16-22 AWG wire size.
•
Use only one conductor in a clamping point between the DC
power source and the power input.
ATTENTION
If the
AWK-3251A-M12-RCC is connected to a motor or other
similar type of equipment, be sure to use power isolation
protection. Before connecting the
AWK-3251A-M12-RCC to the
DC power inputs, make sure the DC power source voltage is
stable.

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Wiring the Relay Contact
The AWK-3251A-M12-RCC has one relay output, which consists of the
two contacts of the terminal block on the AWK-3251A-M12-RCC’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-3251A-M12-RCC has two sets of digital inputs—DI1 and DI2.
Each DI comprises two contacts of the 10-pin terminal block connector
on the AWK-3251A-M12-RCC’s top panel. 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
Attach the cable holder to the bottom of the AWK-3251A-M12-RCC to
keep cabling neat and avoid accidents that result from untidy cables.
STEP 1: Screw the cable holder onto the bottom
of the
AWK-3251A-M12-RCC.
STEP 2:
After mounting the AWK-3251A-M12-RCC and plugging in the
LAN cable, tighten the cable along the device and wall.

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Communication Connections
10/100/1000BaseT(X) Ethernet Port Connection
The 10/100/1000BaseT(X) ports located on the AWK-3251A-M12-RCC’s
front panel are used to connect to Ethernet-enabled devices.
MDI/MDI-X Port Pinouts
Pin
1000BaseT
MDI/MDI-X
10/100BaseT
(X)
MDI
10/100BaseT
(X)
MDI-X
1
DA+
TD+
RD+
2
DA–
TD-
RD-
3
DB+
RD+
TD+
4
DB–
RD-
TD-
5
DD+
–
–
6
DD–
–
–
7
DC-
–
–
8
DC+
–
–
RS-232 Connection
The AWK-3251A-M12-RCC 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 AWK-3251A-M12-RCC’s console port to your PC’s
COM port. You may then use a console terminal program to access the
AWK-3251A-M12-RCC for console configuration.
Pin
Description
1
DSR
2
NC
3
GND
4
TXD
5
RXD
6
NC
7
NC
8
DTR
LED Indicators
The front panel of the AWK-3251A-M12-RCC contains several LED
indicators. The function of each LED is described in the table below:
LED
Color
State
Description
Front Panel LED Indicators (System)
PWR1 Green
On
Power is being supplied from power input
1.
Off
Power is not being supplied from power
input 1.
PWR2 Green
On Power is being supplied from power input
2.
Off
Power is not being supplied from power
input 2.
PoE Amber
On
Power is being supplied via PoE.
Off
Power is not being supplied via PoE.
SYS Red On
System initialization failure, configuration
error, or system error.

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LED
Color
State
Description
Green On System startup completed and is operating
normally.
LAN
Green
On
LAN port’s 1000 Mbps link is active.
Blinking
(3 Hz)
Data is being transmitted at 1000 Mbps.
Off
LAN port’s 1000 Mbps link is inactive.
Amber
On
LAN port’s 10/100 Mbps link is active.
Blinking
(3 Hz)
Data is being transmitted at 10/100 Mbps.
Off
LAN port’s 10/100 Mbps link is inactive.
2.4G
Green
On
The AWK is in Client-based mode (Client,
Client-Router, ACC-Slave).
Blinking
The AWK is in Client-based mode and is
transmitting traffic.
Amber
On
The AWK is in AP-based mode (AP, Master,
ACC-Master).
Blinking
Data is being transmitted over the 2.4 GHz
band.
Green/
Amber
Off
The WLAN is in Client/Slave/ACC
Master/ACC Slave mode without an
established connection, or the WLAN is not
working properly.
5G
Green
On The AWK is in Client-based mode (Client,
Client-Router, ACC-Slave).
Blinking
The AWK is in Client-based mode and is
transmitting traffic.
Amber
On
The AWK is in AP-based mode (AP, Master,
ACC-Master).
Blinking
Data is being transmitted over the 2.4 GHz
band.
Green/
Amber
Off
The WLAN is in Client/Slave/ACC
Master/ACC Slave mode without an
established connection, or the WLAN is not
working properly.
Signal
Strength
(5 LEDs)
Green
On
Signal strength indicator (for
Client/Slave/ACC Slave/ACC Master only).
Off
The AWK is in AP/Master/Sniffer mode, or
no connection is established.
Specifications
Input Current
2.01 A @ 12 VDC, 0.5 A @ 48 VDC
Input Voltage 12 to 48 VDC, redundant dual power inputs,
48 VDC Power over Ethernet
Power Consumption
24.12 W (max.)
Relay Output
24 VDC, 1 A (resistive load)
Operating Temperature Standard Models: -25 to 60°C (-13 to 140°F)
Wide Temp. Models: -40 to 75°C (-40 to
167°F)
Storage Temperature
-40 to 85°C (-40 to 185°F)
NOTE
To meet the standard for IP30 protection, all unused ports
should be covered with the protective caps.

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ATTENTION
The AWK-3251A-M12-RCC is NOT a portable mobile device and
should be located at least 50 cm away from the human body.
The AWK-3251A-M12-RCC is NOT designed for the general
public. To ensure that your AWK-3251A-M12-RCC wireless
network is safe and configured correctly, consult a well-trained
technician to assist with the installation process.
ATTENTION
Use the
appropriate antennas for your wireless setup: Use 2.4
GHz antennas when the
AWK-3251A-M12-RCC is configured for
IEEE 802.11b/g/n.
Use 5 GHz antennas when the AWK-3251A-
M12
-RCC is configured for IEEE 802.11a/n/ac. Make sure that
the antennas are
located in an area with a lightning and surge
protection system installed.
ATTENTION
Do not locate the antenna near overhead power lines or other
electric light or power circuits, or where it can come into
contact with such circuits. When installing the antenna, take
extreme care not to come into contact with such circuits,
because they ma
y cause serious injury or death. For proper
installation and grounding of the antenna, refer to national and
local co
des (for example, U.S.: NFPA 70; National Electrical
Code (NEC) Article 810;
Canada: Canadian Electrical Code,
Section 54).
NOTE
For installation flexibility, you can use either antenna 1 or
antenna 2
. Make sure the antenna connection matches the
antenna
s configured in the AWK-3251A-M12-RCC’s web
interface.
To protect the connectors and RF module, all radio ports should
be terminated by ei
ther an antenna or a terminator. We
strongly recommend using resistive terminators for terminating
the unused antenna ports.
Software Setup
This section covers the software setup for the AWK-3251A-M12-RCC.
How to Access the AWK
Before installing the AWK device (AWK), make sure that all items in the
package checklist are provided in the product box. You will also need
access to a notebook computer or PC equipped with an Ethernet port.

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• Step 1: Select a suitable power source and plug in the AWK.
The AWK can be powered by DC power ranging from 12 VDC to 48
VDC or by a PoE PSE via an Ethernet connection.
• Step 2: Connect the AWK to the notebook or PC via the
AWK’s LAN port.
The LED indicator on the AWK’s LAN port will light up when a
connection is established.
NOTE
If you are using an Ethernet-to-USB adapter, follow the
instructions in the user’s manual provided with the adapter.
• Step 3: Set up the computer’s IP address.
Choose an IP address for the computer that is on the same subnet
as the AWK. Since the AWK’s default IP address is
192.168.127.253, and the subnet mask is 255.255.255.0, set
the IP address to 192.168.127.xxx, where xxx is a value between
1 and 252.
• Step 4: Access the homepage of the AWK.
Open your computer’s web browser and type
https://192.168.127.253 in the address field to access the
AWK’s homepage. If successfully connected, the AWK’s interface
homepage will appear. Click NEXT.

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• Step 5: Choose your country or region.
Select your country or region from the drop-down list and click
NEXT.
• Step 6: Create a user account and password.
Enter the username, password, and email address for your user
account and click CREATE.
NOTE
The username and password are case-sensitive.

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After creating your account, you will be automatically redirected to
the login screen.
• Step 7: Log in to the device.
Enter your username and password and click LOG IN. The device
will start initializing, this may take several seconds. Once the
warning message has disappeared, you can log in using your
username and password.
.
First-time Quick Configuration
After successfully accessing the AWK, refer to the appropriate
subsection below to quickly set up a wireless network.
NOTE
Ensure that there are no IP address conflicts when you
configure more than one AWK on the same subnet.

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AP/Client Mode
Configuring the AWK as an AP
• Step 1: Set the operation mode of the AWK to AP mode.
Go to Wi-Fi Wireless Settings and select AP from the
Operation Mode drop-down list.
• Step 2: Set up the AWK as an AP.
Click the ADD icon to create a new SSID.

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On the settings page, configure the SSID Status, SSID, RF Band,
RTS/CTS Threshold, and Transmission Rate for the 5 GHz or
2.4 GHz band. When finished, click NEXT.
On the second SSID Settings screen, configure the SSID
Broadcast Status and Security type. From here, you can also
copy the configuration over to the second SSID. When finished,
click CONFIRM.

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Configuring the AWK as a Client
• Step 1: Set the operation mode of the AWK to Client mode.
Go to Wi-Fi Wireless Settings and select Client from the
Operation Mode drop-down list, set the SSID, and click Apply. For
more detailed configurations, refer to the AWK-3251A-M12-RCC
User Manual.
Master/slave Mode

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Configuring the AWK as a Master
• Step 1: Set the operation mode of the AWK to Master mode.
Go to Wi-Fi Wireless Settings and select Master from the
Operation Mode drop-down list.
• Step 2: Set up the AWK as a Master.
Click the ADD icon to create a new SSID.
On the settings page, configure the SSID Status, Master/AP
(select Master),SSID, RF Band, RTS/CTS Threshold, and
Transmission Rate for the 5 GHz or 2.4 GHz band. When finished,
click NEXT.