Moxa Technologies AWK-3252A Series User manual

P/N: 1802032520014
*1802032520014*
AWK-3252A Series
Quick Installation Guide
Moxa AirWorks
Version 1.3, October 2022
Technical Support Contact Information
www.moxa.com/support

2022 Moxa Inc. All rights reserved.

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Overview
The AWK-3252A Series is an industrial-grade AP/bridge/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. Meanwhile, backwards compatibility with 802.11a/b/g/n
makes the AWK-3252A the ideal solution for constructing a versatile
wireless data transmission system.
Hardware Setup
This section covers the hardware setup for the AWK-3252A.
Package Checklist
Moxa’s AWK-3252A 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-3252A wireless AP/client
•2 x 2.4/5 GHz antennas: ANT-WDB-ARM-0202
•DIN-rail kit
•1 x USB protective cap
•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-3252A
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, 2.4GHz, 5GHz, SYSTEM
6. USB host (type A for ABC-02)
7. Console port (RS-232, RJ45)
8. LAN1 (PoE), LAN 2 ports
(10/100/1000BaseT(X) ports,
RJ45)
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-3252A. Mount the AWK-3252A 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-3252A towards the
mounting rail until it snaps into
place.

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To remove the AWK-3252A 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-3252A
forward and lift it up to remove
it from the mounting rail.
Wall/Ceiling Mounting (Optional)
For some applications, it may be more convenient to mount the AWK-
3252A to a wall or ceiling, as illustrated below.
STEP 1:
Remove the aluminum DIN-rail attachment plate from the AWK-3252A,
and then attach the wall-mounting plates with M3 screws, as shown in
the following diagrams.
STEP 2:
Mounting the
AWK-3252A to a wall requires 2 screws.
Use
the AWK-3252A 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 shoul
d be at least 15 mm,
as shown 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-3252A downwards (wall mounting) or forwards (ceiling
mounting), 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-3252A.
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 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 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
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-3252A
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)

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Terminal Block Pin Assignment
The AWK-3252A 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.
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-3252A’s top panel are used for the AWK-3252A’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-
3252A
’s top panel.
NOTE
Before connecting the AWK-3252A 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.

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ATTENTION
If the
AWK-3252A
is connected to a motor or other similar type
of equipment, be sure to use power isolation protection. Before
connecting the
AWK-3252A to the DC power inputs, make sure
the DC power source voltage is stable.
Wiring the Relay Contact
The AWK-3252A has one relay output, which consists of the two
contacts of the terminal block on the AWK-3252A’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-3252A has two sets of digital inputs—DI1 and DI2. Each DI
comprises two contacts of the 10-pin terminal block connector on the
AWK-3252A’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-3252A to keep
cabling neat and avoid accidents that result from untidy cables.
STEP 1:
Screw the cable holder onto the botto
m
of the
AWK-3252A.
STEP 2:
After mounting the AWK-3252A
and plugging in the LAN cable,
tighten the cable along the device and wall.