ARK XO TECH XOTPDH504 User manual

Ensure this manual is stored in a safe place and handed over
to new owners for reference on operation and maintenance.
POWER DISTRIBUTION
HUB (PDH) MANUAL
V1. 9/21
TECH
XO TECH 12V DC 50A POWER MANAGEMENT
SYSTEM WITH APP CONTROL
Part No. XOTPDH504

CONTENTS:
1. Warnings & Safety instructions
1.1 General safety
1.2 Operating the PDH safely
2. Overview
2.1 PDH Function & Dimension
2.2 Packaging contents
3. Getting Started
3.1 Fitting the PDH
3.2 Connecting the PDH to a Battery
3.3 Pairing the PDH
4.1 Features - Protection Modes
4. Features and Specifications
4.3 Features - Battery Selection and State of Charge (SOC)
4.4 Screensaver Mode
4.5 Input/Outputs and Relays
4.6 Technical Specifications Table
5. Using Ark Smart Hub App
5.1 Downloading App
5.2 Pairing Device
6. Troubleshooting
7. Warranty
8. Maintenance
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PAGE
4.2 Features - Battery Analysis .........10
5.3 Using the App General Dashboard
5.4 Using the App Advanced Dashboard
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5.5 App Settings ........15
5.6 Violations (Voltage, Current and Temperature) ........16

PLEASE READ THIS MANUAL CAREFULLY BEFORE INSTALLATION AND
FIRST USE. PLEASE KEEP IN A SAFE AND SECURE PLACE FOR FUTURE
REFERENCE. IF YOU SELL OR PASS ON THIS PRODUCT PLEASE ALSO PASS
THE MANUAL ALONG WITH IT.
THIS PRODUCT SHOULD NOT BE USED FOR ANY MEDICAL PURPOSE, LIFE
SUSTAINING EQUIPMENT, SAFETY APPLICATIONS, OR ANY APPLICATION
WHERE EQUIPMENT FAILURE CAN CAUSE INJURY, DEATH, FIRES OR ANY
OTHER HAZARD.
PLEASE READ ALL MANUALS, WARNING, AND INSTRUCTIONS BEFORE
INSTALLING AND USING THIS PRODUCT. FAILURE TO ADHERE TO THESE
INSTRUCTIONS PROPERLY, OR IMPROPER USE OF THIS PRODUCT COULD
RESULT IN PERSONAL INJURY, DEATH OR DAMAGE TO PROPERTY.
WARNING: ENSURE POLARITY OF YOUR ANDERSON STYLE
CONNECTOR IS CORRECT AND THERE IS NO LOAD CONNECTED TO
THE PDH WHEN TURNING ON FOR THIS FIRST TIME. ALWAYS ENSURE A
50AMP INLINE FUSE IS INSTALLED ON POSITIVE WIRE FROM BATTERY.
1. Warnings & Safety instructions
Ark Corporation accept no liability for damage in the following cases:
• Damage to product as a result from mechanical influences and/or
incorrect installation of the device.
• Alterations or modifications to the device without express
permission from Ark Corporation
• Use for purposes other than those described in the operating
manual.
Note: Always follow basic safety information when using electrical
devices to protect against electric shock, fire hazards or injury.
1.1 General safety
• Only use the PDH as intended
• The device must not be used if itself or the battery connection
cable is visibly damaged in any way shape or form.
• This device may only be repaired by a qualified and authorised
person. Failure to adhere to this direction could cause harm and will
void product warranty.
• Always keep and use device out of reach of children.
• Children must be supervised to ensure they do not play with
device.
• Do not mount device in wet areas.
• Use of accessories not recommended or sold by Ark Corporation
may result in fire, electric shock or other harms to person.
• Remove personal metal items such as rings, necklaces, bracelets,
and watches before working with a vehicle battery. A vehicle battery
can produce a short circuit strong enough to weld such metals
which will result in severe burns.
1

1.2 Operating the PDH safely
Do NOT operate the device if:
• Near corrosive fumes.
• Near combustible materials.
• In areas where there is risk of explosion.
• In areas submerged under water or other liquids.
• There is visible damage to any ports.
• There is visible damage to wiring.
• If there is not a secure connection to the battery.
2. Overview
2.1 PDH Function & Dimension
overall length 267mm
overall width 192mm
height 60mm
Relay
ON/OFF
buttons
MODE Relay
ON/OFF
LED
Relay and
accessory
port fuse
LED
Main Relay
PDH
ON/OFF
LED
2

2.2 Packaging contents
• 1 x Power Distribution Hub (PDH)
• 2 x Anderson style connector
• 4 x Cable Ties
• 2 x Red Heat Shrink
• 4 x Black Heat Shrink
• 4 x 8mm Ring Terminals
• 2 x 10mm Ring Terminals
• 1 x Product Manual
3. Getting Started (introduction of the device)
3.1 Fitting the PDH
• Choose a location that is easily accessible with adequate
ventilation.
• Ensure the location you have chosen to install your PDH is free of
potential risks that may damage the device i.e. splashing water,
venting gases, naked flames or potential combustible gases or
liquids.
• Make sure there is enough room to connect power input and
accessories.
• Use 4x M4 fasteners to secure the PDH to a flat level surface free of
bumps and intrusions. (Fasteners not included)
mounting length 200mm
mounting width 180mm
3

3.2 Connecting the PDH to battery
Using a 50A fuse is a MUST and should be considered on any
installation.
You can connect your PDH to your battery using an
Anderson style connector. Please ensure a 50A fuse is fitted
inline on the Positive cable as close to the battery as possible, it is
highly recommended to use wiring no less than 8AWG. (50A fuse not
included)
With the Negative cable, we suggest using a negative
busbar as illustrated inline with this connection before returning to
the battery. (Busbar not included)
Ensure all connections to the battery are tight and secure
and plug the power to the top Anderson style connector on the PDH
labelled “INPUT”.
HANDY HINT - Using a negative busbar will prevent the need of
returning all your negative lines from your devices controlled by the
4 x Relay outputs back to the battery and provide a common ground
for these devices.
4

3.3 Pairing the PDH
Before you enter the pairing stage ensure the PDH is con-
nected to the battery and is powered. Ensure there is NO load on the
device. It is recommended that NO accessories or relays are connect-
ed to the device at this stage.
Step 1: Please hold Mode button on the PDH for at least 10 seconds
or more until the device enters pairing mode and the display reads
“Pairing Mode”
Step 2: Open the Ark Smart Hub App and allow App to access Blue-
tooth Services on your device, then choose PDH button
Step 3: Click on “Add
Device”.
Step 4: In the
searching list please
choose ARKPDH504.
Step 5: Please
Choose a 4-digit
password for your
device and select OK.
5

Step 6: Please enter a device
name. If using a lithium
battery press the tab until
green. If using another bat-
tery i.e AGM, Gel, Lead Acid
DO NOT SELECT TAB. Then
input battery
capacity and select OK.
Your Device is now
connected, and your
battery information will be
displayed.
3.4 Connecting the accessories
The PDH has Two Inputs.
• Battery input
• 1x Water Tank Sensor.
50A Anderson
style input
5 Pin tank
sensor input
6

The Water tank sensor port will accept AMP-171822-5 5 pin
connectors (not included)
These are common on the market and are readily available through
RV Electronics Australia.
Acceptable models include:
1. SP0004
2. SP0011
3. SP0028
The PDH has NINE outputs:
• 1x Anderson Style Plug (50A)
• 1x Standard Socket (10A)
• 1x Engel Socket (10A)
• 1x Merit Socket (15A)
• 1x Dual USB port (5V 2.1A)
•4x Controllable Relays (10A EACH) - Accessory 12V + Outlet
Controllable Relays x 4
Accessory 12V + Outlet
Anderson Style
Connector 50A
Standard Socket 10A
Dual USB Port 2.1A
Merit Socket 15A
Engel Socket 10A
7
CAUTION - If all outputs are used at once, the total maximum current
the PDH can operate is 50A only, if overloaded the device will enter
Current Protection Mode (Page 9)

4. Features and Specifications
4.1 Features – Protection Modes
The PDH incorporates 3 protection modes to keep the device
and the battery it is connected to safe.
• Voltage Protection Mode
• Current Protection Mode
• Temperature Protection Mode
Voltage Protection mode:
Voltage protection mode is incorporated into the PDH to
protect the battery from draining past certain points based on the
selected settings by the user.
Voltage Cut Out Settings:
• High: 12.1v – When the device is in High Mode the letter “H” will be
displayed in the top left-hand corner of the PDH screen
• Medium: 11.6v - When the device is in Medium Mode the letter “M”
will be displayed in the top left-hand corner of the PDH screen
• Low: 10.9v - When the device is in Low Mode the letter “L” will be
displayed in the top left-hand corner of the PDH screen
• No: No Protection – (No cut out point). When the device is in No
Mode the letter “N” will be displayed in the top left-hand corner of
the PDH screen.
“N” Setting will not offer any voltage protection. This mode is
to be used in circumstances where the battery must be pushed to its
absolute limits. Using “N” setting runs the risk of permanent damage
to the battery because it will allow the user to use the battery to the
last volt. When “N” mode is activated by the user, the device will start
an override timer for “N” mode. This timer lasts 15 minutes.
After 15 Minutes the device will then override to medium settings.
Voltage Protection Reset:
If Voltage Protection is triggered the device will wait
4 minutes before re-checking the battery voltage state.
Voltage protection will override at the following voltage:
• High: 12.6v
• Medium: 12.2v
• Low: 12.0v
If Device is turned off, it will remember which voltage setting
it was previously in and automatically be set to that setting unless in
“N” mode.
If the device is turned off in “N” mode, when turned back on it
will restart in “M” settings.
8

When In protection mode this following symbol will be
displayed on screen.
Protection Mode can be overridden by changing Voltage Cut Out
Settings: for example, if the user has it set at High however the
accessory can operate within the medium or low setting range, the
user can change this setting through the mobile app or by pressing
the mode button on the PDH.
If device is overloaded, it will appear on screen and will not
come out of voltage protection mode until the overloading issue is
addressed. Overloading occurs when there is too much draw on the
device based on the user selected settings.
Current Protection:
The PDH is designed to operate with a total maximum
current of 50amp. If this current is exceeded the device will trigger
current protection mode.
When Current protection mode is triggered the following
symbol will be displayed on screen.
Temperature Protection:
The PDH internal operating temperature range is between
-20 ˚C to 85 ˚C. When in temperature protection mode the following
symbol will be displayed.
Temperature protection mode is triggered above 85 ˚C.
Device will not exit temperature protection mode until the internal
temperature is below 55 ˚C.
9

4.2 Features – Battery Analysis
On initial start-up it is advised the PDH be connected to a
fully charged battery. When the PDH is first turned on, in order to
estimate the state of charge (SOC) of the battery, there should no
load connected to the device for 1 minute so the PDH can estimate
the charge level of the battery. The user must make sure they select
the correct battery profile and capacity which can be changed in the
settings menu in the mobile app.
The PDH uses coulomb counting to monitor the SOC of the
battery. PDH has a smart feature which recognises when the battery
is being charged. In such situations the SOC information will not be
displayed on screen of the device or the mobile app. Once the
battery has exited a charge cycle the PDH will analyse the battery
and reassess the SOC.
It is important to note that the PDH will not assess the SOC
when there is a load connected to the PDH. For example, when a
fridge is connected to the PDH and the fridge compressor is running
simultaneously when the battery comes out of a charge cycle, The
PDH will not display SOC. When out of a charge cycle and the fridge
compressor is not running, battery analysis will be applied for 10mins
to display SOC.
4.3 Features – Battery selection and state of charge display
The PDH device is designed with 2 battery profiles.
• Lithium (LiFePO4)
• Not Lithium (Lead-Acid, AGM, Calcium, Gel)
The device will recognise when the battery is being charged
and a message will display on the screen “battery is being charged”.
When battery is being charged all SOC calculations will NOT be
displayed because there is not an accurate measure when battery is
being charged. Battery percentage and hours remaining till charged
will not be displayed. Usage will still be displayed when battery is
being charged e.g current draw, amp usage etc.
Lithium Batteries (LiFePO4) – Voltage more than 13.9, the
system will assume battery is being charged. When voltage is 13.75
and below all SOC displayed will restart.
Not Lithium batteries (Lead-Acid, AGM, Calcium, Gel) -
Voltage more than 13.25, the system will assume battery is being
charged. When voltage is 13.1 and below all SOC displayed will restart.
10

“Analysing” will be displayed on screen when SOC is being
calculated.
“Analysing” will be displayed if there is a load on the battery
SOC has NOT been calculated.
On initial start-up, the system will analyse the battery and
there should be no load placed on the battery for 1 entire minute to
accurately assess SOC.
When device is analysing the battery 0% will be displayed on
the device App.
If changing battery type and size, you must do this through
the device mobile App. No load should be placed on the battery to
ensure the device accurately assesses SOC correctly.
4.5 Input/Outputs and Relays
Power Input:
The main power Input is the top right hand side Anderson
style on the device.
Outputs:
• 1x 50A Anderson Style connector – (Lower right side)
• 1x 10A Standard Socket – Cig Socket
• 1x 2.1A Dual USB
• 1x 10A Engel Socket
• 1x 15A Merit Socket
• 4x 10A Wired Relays (12V Positive Outlet only, Negative to earth
BUSBAR as suggested or direct to battery)
HANDY HINT - All Outputs and Relays are Rated to 10amp (except
Anderson style connector which is 50amp and Merit Socket which is
15 amp) and fused with thermal cut out fuses. Relays will automati-
cally cut out if above operating temperature. Relays will reset when
fuses reach below cut out temperature. If fuses keep cutting in and
out the PDH is overloaded.
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4.4 Screensaver Mode
Screensaver Mode will be automatically activated when there
is no load on the PDH after 30mins, this turns the screen on the PDH
OFF saving additional power for your battery.
The screen will be automatically turned ON when a load on
the PDH is connected or any button on the device is pressed.

4.6 Technical Specifications Table
Electrical:
Input Voltage: 12V
Maximum Total Input/Output Current: 50A
Maximum Current per Output:
• 1x Anderson style connector
• 1x 12v DC Socket
• 1x Dual USB
• 1x Engel Socket
• 1x Merit Socket
• 4x Relays
50A
10A
2.1A Combined
10A
15A
10A each
Voltage Protection cut off:
• High
• Medium
• Low
• No Protection
12.1V
11.6V
10.9V
Voltage Protection Reset:
• High
• Medium
• Low
12.6V
12.2V
12.0V
General:
Operating Temperature: -20°C to 85°C
Storage Temperature: -40°C to 85°C
Internal Temperature Protection
Triggered:
85°C
Temperature Protection Reset: 55°C
Standby Usage: 0.2Ah
Weight: 1.3kg
Compliance:
AS/NZS 4268 Australian / New Zealand
FCC USA
IC Canada
12

5. Using Ark Smart Hub App
5.1 Downloading App
Download Ark Smart Hub App from App store or Google Play.
Alternatively, you can scan the below QR code for the link.
5.2 Pairing Device
Refer to detailed instruction section 3.3 Pages 5-6
Before you enter the pairing stage ensure the PDH is
connected to the battery and is powered. Ensure there is NO load
on the device. It is recommended that NO accessories or relays are
connected to the device at this stage.
You can pair, name and save multiple PDH devices to the app.
i.e if you have a PDH in your camper and 4WD, they can be saved
and named CAMPER and 4WD for quick and easy reference in app.
NOTE: Only one device at any one time can be connected to
the app for relay control and monitoring of battery.
5.3 Using the App General Dashboard
Make sure your Bluetooth is turned
on and open the app. After you open the
App, please choose the paired device from
the scrolling menu.
13

After choosing the device the
app will try to connect to the PDH. After
connection, the app will show the PDH
general dashboard like this example.
The General Dashboard provides
information about the battery status,
power consumption, protection mode
and water level (if water sensor has been
installed and connected). There are FOUR
buttons which are used to control the
FOUR relays.
In order to change the PDH
protection mode just simply tap the
ORANGE voltage protection letter then
cycle through the options.
The PDH has a smart feature to
detect when your battery is being charged
as explained in Section 4.3. When the PDH
detects the battery is being charged, the
battery status section will change to “∞”.
If there is no water tank sensor
connected or the tank level is below 25%
the status will change to “reserved”.
14

5.4 Using the App Advanced Dashboard
If you require more detailed
information from the PDH you can use the
Advanced Dashboard by selecting it from
the menu.
The Advanced dashboard will
provide more in-depth information about
power consumption, status of the PDH
device and battery its is connected to.
5.5 App Settings
The settings page will provide
the user with options to change battery
type and battery capacity. You can also
customise the name of each relay, you can
re-name the paired device or delete it from
the app entirely.
15
Relay 1
Relay 2
Relay 3
Relay 4

5.6 Violations
5.6.1 Voltage Violation
Whenever there is a voltage
violation this page will show on the app.
In this page you can see the status of the
protection mode and the specific voltage
recorded when the violation occurred.
You can change the voltage
protection mode by tapping the orange
voltage symbol. The user has full control
of the relays to prevent overloading of the
device during this time.
5.6.2 Current Violation
Whenever there is a cur-
rent violation then this page will
show on the app. In this page you can see
the status of the voltage protection
and the specific current recorded
when the violation occurred.
The user has full control of the relays
to prevent overloading of the device during
this time.
16

5.6.3 Temperature Violation
Whenever the inside temperature
of the device reaches 85˚C or above, the
following page will show on the app.
In this page, you can see the present inside
temperature of the device.
The voltage protection mode is also
displayed in this page. The user has full
control of the relays to prevent overloading
of the device during this time.
6. Troubleshooting
WARNING: ENSURE POLARITY OF YOUR ANDERSON STYLE
CONNECTOR IS CORRECT AND THERE IS NO LOAD CONNECTED
TO THE PDH WHEN TURNING ON FOR THIS FIRST TIME. ALWAYS
ENSURE A 50AMP INLINE FUSE IS INSTALLED ON POSITIVE WIRE
FROM BATTERY.
PDH is connected to battery but it will not turn on:
Check polarity of the Anderson style plug. Ensure the Ander-
son style plug is correct and positive is connected to positive and
negative connected to negative. Check all connections are secured
and not loose.
PDH is connected but only Fuse indicators are alight:
The Battery input is connected to the output Anderson style
socket. Remove and place in input side.
PDH has been turned on for the first time but is not
displaying battery percentage:
Ensure there is NO load connected to the PDH on initial start-
up for at least 1 minute. The PDH will analyse the battery when there
is no load connected.
17
Relays are turned on but there is no output:
Check LED fuse indicators and ensure all indicators are alight. If they
are not, the relay is most likely overloaded. Reduce the load and wait
for the fuse to reset automatically.

PDH screen reads “analysing the battery” and mobile app
says 0%:
There is a load on the device therefore the PDH cannot assess
battery state of charge correctly. Ensure all loads are disconnected
or if you have a permanent load connected (i.e Fridge) wait until the
PDH smart algorithm detects no load (i.e fridge compressor is not
running). At this stage, the PDH will automatically assess State of
Charge(SOC). This Process takes up to 10 minutes and if there is any
load detected during this time it will restart the process in order to
measure an accurate SOC.
The water tank sensor is connected, and the tank is full but
PDH reads 0%:
Ensure to use recommended water tank level sensor. PDH is suitable
to use with Non-Metal water tanks. If your water tank is metal make
sure it is not grounded. Grounded metal water tanks will interfere
with water sensor communication
Ark products are covered under consumer law outlined in its
warranty policy available online
www.arkcorporation.com/warranty-claim-policy/
Ark does not warrant the workmanship of auto electricians,
fabricators or any installers of this product. Checks should be made
on the proficiencies of those hired to fit this product.
7. Warranty
18
8. Maintenance
Minimal maintenance is required to keep the XO TECH Power
Distribution Hub looking new and in good working order.
Periodically check all connections for firm fitment.
Periodically assess wires to ensure there is no damage or
chance of short circuit. If wires are found to be damaged, immediate-
ly disconnect the PDH from the battery and replace any damaged
cable.
DO NOT spray the PDH with water as it is an electrical device.
Wipe any dirt or dust with a slightly damped cotton cloth.
PDH screen reads “battery is being charged” but my battery
is not being charged
Wrong battery type has been selected, “Lithium” battery type
voltage is much higher than standard “Non Lithium” battery types
such as AGM, Gel or Lead acid type batteries. If “Lithium” battery type
is selected when fitting “Non Lithium” type batteries then the system
will assume the battery is being charged because of the high volt
range.