Weco HeSU 4k4 PRO User manual

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I n s t a l l a t i o n M a n u a l
HeSU 4k4 PRO Battery Module

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HeSU 4k4 PRO Battery Module
In case of product upgrades to the 4k4 PRO Battery Module or for other reasons, this document will be adjusted
accordingly. Unless otherwise agreed, this document is intended to be used only as a guide, and all statements,
information and advice in the documentation shall not constitute any express or implied action in contradiction to local
regulations or standards.
For more information, please contact us.
The official information and the latest datasheet are available on www.wecobatteries.com
It is essential that the battery unit is equipped with the latest firmware version available.
WeCo will release new firmware to improve the functionalities and battery capabilities from time to time
The latest version of the firmware is always available free of charge, the battery firmware can be updated by your local
installer.
You can also write an email to [e-mail] to understand the upgrade procedure.
ATTENTION
The 4k4 PRO Battery Module is designed to be used indoors.
The STANDARD IP20 degree of protection does not allow installation in outdoor environments even if sheltered
from the weather.
The INDOOR definition means literally the internal environment, the room must be closed to unauthorized persons,
ventilated and dry.

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TABLE OF CONTENTS
1 PREFACE 4
2 INFORMATION IN THIS MANUAL 4
2.1 About this Manual 4
2.2 Use Range 4
2.3 Additional Information 4
2.4 Symbols Used 4
3 SAFETY 5
3.1 Warnings and Notification 5
3.2 Safety Guidelines 5
4 PRODUCT OVERVIEW 6
4.1 Product Introduction 6
4.2 Identifying the Product Components 6
4.3 LED Bar Definitions 8
5 SYSTEM INSTALLATION 9
5.1 Installation Notice 9
5.2 Package Information and Parts List 9
5.3.1 Installation Procedure (Wall Mount) 12
5.3.2 Installation Procedure (Stack Mount) 14
5.4 Communication and Control Panel 18
5.5 DIP Switch Settings 19
5.6 Parallel Battery Wiring Convention 21
6 BATTERY ACTIVATION AND SHUTDOWN 24
6.1 Panel Button and LEDs Explanation 24
6.2 Stand Alone Battery Front Panel Control 24
6.2.1 Start Battery 24
6.2.2 Shut Down Battery 24
6.2.3 Low battery Forced Charge Function 24
6.3 Parallel Battery Configuration 25
6.3.1 Activation of Parallel Batteries 25
6.3.2 Shut Down of Parallel Batteries 25
7 TROUBLESHOOTING 26
8 SOFTWARE GUIDE 28
9 PRODUCT COMPATIBILITY LIST (See Also 8.5) 32
10 SINGLE CLUSTER CONFIGURATION (100A) 33
11 SINGLE CLUSTER CONFIGURATION (300A) 34
12 MULTI CLUSTER HUB CONTROLLER (We-HUB) 35
13 MULTI CLUSTER CURRENT LIMITATIONS 36
14 MULTI CLUSTER CONNECTION 38
15 INVERTER SETTINGS WITHOUT BMS-CAN CONNECTION (GENERAL) 39
ANNEX-A OUTBACK INVERTER CONNECTION WITHOUT BMS-CAN 42

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1 PREFACE
Thank you for choosing our product. We will provide you with a good quality product as well as reliable after service.
To protect against harm to both personnel and the product, please read this manual carefully.
This manual provides detailed information on operation, maintenance and troubleshooting of the product as well as health and
safety advice.
Special Announcement:
The manufacturer holds the right of final explanation of any content in this manual.
2 INFORMATION IN THIS MANUAL
2.1 About this Manual
This manual relates only to the HeSU 4K4 PRO Low Voltage Universal Stackable Model. This manual is intended to be used only by
qualified installers who must read carefully and always refer to the manual for guidance on correct operation and maintenance of the
product.
2.2 Use Range
This installation guidance applies only to the HeSU 4K4 PRO Low Voltage Universal Stackable Model.
2.3 Additional Information
Specification of the product can be changed without any notice to customers.
2.4 Symbols Used
Symbol meanings：
CAUTION represents hazardous situations which can cause light injuries if not avoided.
NOTICE represents the situations which can cause damage to property if not avoided.
INFORMATION provides tips that are valuable for optimum installation and operation of the product.

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3 SAFETY
3.1 Warnings and Notification
Installation environment requirements: -HESU- SERIES is designed for household purposes. For installation, it must be installed in a
location complying with IP20. (IP 55 or IP65 are available on request). Installations in locations that do not comply with IP20 may
cause failure and/or damage to the product and subsequently the product warranty will be considered void.
3.2 Safety Guidelines
At all times be certain to avoid a short-circuit between the anode terminal and a cathode terminal of the battery. All electrical
connections on the -HESU- SERIES must be made only by qualified professional personnel.
When installed and operated in accordance with this manual, the HeSU Series battery will perform as a safe and reliable manner in
accordance with the battery operating specifications.
Subjecting the battery to an unsuitable operating environment or to damage, misuse or abuse may result in health and safety risks
such as overheating or electrolyte smoke potential. All personnel must comply with the safety precautions and observe all warnings
as detailed in this document. If any of the safety precautions or procedures detailed in this manual is not fully understood by the
reader, the reader must not perform any operation on the battery, until they have contacted WECO the customer service officer for
clarification and confirmation of understanding of the correct procedure.
The safety guidelines included in this document may not include or consider all the regulations in your area of installation/operation.
When installing and operating this product the installer must review and consider applicable local laws and regulations in accordance
with the industry standards of the product.
Installation personnel shall not wear watches and other metal items when performing installations as a precaution to avoid short
circuits and personal injuries.
The weight of an individual HeSU 4K4 PRO battery is around 50kg, please use original packaging and perform all safety precautions
if the battery is to be relocated to another location, to avoid damage to the product and personnel injury.

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4 PRODUCT OVERVIEW
4.1 Product Introduction
The HeSU Series batteries can be used as an on-grid or off-grid energy storage system. It is recommended not to use this product for
any purpose other than the intended purpose as described in this document.
Use of this product other than as described in this document will nullify the product guarantee. The substitution or installation of any
components of this battery will nullify the product guarantee.
The use of any components contained within or connected to this battery other than the products sold as part of this product or
recommended by the manufacturer will nullify the product guarantee.
Connecting more than five individual HeSU 4K4 PRO battery units in parallel will nullify the product guarantee.
4.2 Identifying the Product Components

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The nameplate label attached to the product describes the product parameters, including model type and serial number. Installers
must always check that the specifications displayed on the nameplate of the battery module relates to the installation manual that is
being referred to for guidance.
Only qualified personnel, with a comprehensive understanding of this manual are permitted to install this product.

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4.3 LED Bar definitions
During startup: LED1-LED5: GREEN for 5 Seconds
After startup: LED1-LED5 changes to BLUE color and the SOC of the battery will be displayed.
During the normal status the LED bar always displays SOC value.
During a Fault or Error the LED bar displays the SOC value for 5 seconds, and then displays the battery fault status for 5 seconds,
alternately
SOC 90-100%
SOC 55-89%
SOC 32-54%
SOC 6-31%
SOC 5% * (Yellow when SOC is below 4,9%)
SOC STAUS
ERRORS

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5 SYSTEM INSTALLATION
The battery is packed in a carton box. The total weight exceeds 55Kg and as such it is mandatory that the opening, unpacking and
preliminary checking of the battery is conducted by carried out by a minimum of two people.
5.1 Installation Notice
a) Before installation, check the battery open circuit voltage.
b) Battery installation location should be at least 20m away from sources of heat, sparks or other source of potential danger.
c) Battery connecting cables should be as short as possible to prevent excessive voltage drops.
d) Batteries with different capacity, different P/N or from different manufactures must never be connected together.
e) Before connecting the battery, the battery positive and negative poles need to be carefully checked to ensure correct installation.
f) The battery should be installed on a horizontal plane.
5.2 Package Information and Parts List
The battery is packed in a carton together with standard accessories. When unpacking the battery, be sure to check that the battery
and accessories are free from damage and that the correct quantities of each component are included within the carton.
The following list of components can be used as a check list when unpacking the individual battery and battery kits.
5.2.1 Parts list * Included Accessories
Number
Name
Quantity
Description
Image
1
Battery
1
Lithium battery module
2
Wall mounting plate
1
Support Plate
3
Wall screws
4
Wall Plate Fixing
Screws+Plug
4
CAN cable RJ45
( RJ 45/RJ9 ZCS/SOFAR)
1
1.5m

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5
RJ45 parallel cable
1
1.5m
6
Power cable
1
Length 2.5m
25mm diameter
7
User manual
1
https://wecobatteries.com/download-area/
5.2.2 Stack Kit (To be purchased separately)
Number
Name
Quantity
Description
Image
1
Stack Feet with rubber
2
Left Side + 2 Screws
2
Stack Feet with rubber
2
Right Side+ 2 Screws
3
Front Cover
1
Front Cover + 4 Screws
4
Parallel Bus Bar
1+1
1 Red Bus Bar
1 Black Bus Bar

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5.2.3 Recommended Installation Tools
To remove the terminal cover it is required an Allan Key 2.5mm
Multimeter + Current clamp
Screw Driver Set
Allen Key Set
Drill + Hammer
Electrician Scissors
Wrench set
Lifting strap + mechanical lifter
RS 232/USB+screw terminal
(insulated)
5.2.3 Personal Protective Equipment

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5.3.1 Installation Procedure (Wall Mount)
Preparing the installation area by considering the battery dimension and weight.
The battery weight is 56kg. The wall or the floor must be capable of supporting the battery weight.
Wall Installation Procedure
Step 1：Install the fixing screws on the appropriate height of the wall. The scheme is as following:
When installing the screws, please check the wall plug size, WeCo provides 4x φ10*60mm, but it may be that a different size or type
will be required depending on the actual installation surface.
Step 2: Make sure that the mounting screws are firmly and securely attached to the wall.
When the battery bracket is fixed, please work with a partner to avoid damage to the product or personal injury and install the
battery on the wall bracket.
Plate Fixing Screws

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Step 3: Fix the support plate on the wall Step 4: Interlock the battery module with the wall bracket
For wall and floor installation it is always required to secure the battery module with the vertical structure by using the provided
bracket
Free standing installations are strictly forbidden
Wall Mounted Floor Mounted
When installing the battery, please work with appropriate lifting devices managed by at least two people to avoid product damage or
personal injury. The battery module exceeds 55Kg.

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Wall Mounted Installation of Multiple Batteries
Keep 20 cm between the batteries and or between walls and other objects on the left and right side.
Maintain at least 40 cm from the ceiling.
The bottom side of the battery should be at least at 100 cm from the floor.
5.3.2 Stack Installation
5.3.2.1 Installation of accessories and preparatory phases
Phase 1: Choose the support surface carefully, the batteries have a weight of over 55 kg each and can reach 270 kg
including the accessories, in a stack of five batteries.
Make sure the support surface is adequate to support the overall battery load.
Preparation of the modules
The battery is delivered as standard in a WALL MOUNTED CONFIGURATION and it is therefore necessary that the installer
make simple external changes to install into a STACKABLE CONFIGURATION

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STACK MOUNT INSTALLATION PROCEDURE
Step 1: When the batteries will be stacked you must remove the three brackets from the back side of the battery as shown
below
Step 2: Next, install the pads on all four corners of the bottom of the second battery in the stack using the screws
provided as shown in the picture below.

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Step 3: To lift and position the battery on top of the first one, use the temporary handles provided with the stack kit and align the
second battery with the first and lay down the second module.
Step 4: Once each battery has been installed in the horizontal position, the feet which shipped with the battery in standard
configuration can be removed and installed across the modules to interlock the modules with each other.
Step 5: Continue installation of the modules up to a maximum of five modules in total

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Each battery weights more than 55kg and must be installed with the help of a mechanical lift, and / or with at
least two people equipped with suitable suction cups for lifting or with lifting straps
MAKE SURE THAT THERE IS ZERO VOLTAGE ON THE BATTERY TERMINALS. CHECK THE LED BUTTON ON THE BOTTOM AND
ALWAYS MEASURE THE B+ AND B- TERMINALS WITH A MULTIMETER.
Once it has been verified that there are ZERO volts present ON ALL BATTERIES, proceed with the installation of the cables as
shown in the diagram below.
Power Connection by using the STACKABLE KIT BUS BAR

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After all cables and bus bars have been connected, and the inverter is correctly set up, try to start up the system by turning ON the
master module and proceed toward the last module installed. If the installation is properly set up all the modules will turn on in
sequence, install the protective front plate
If the inverters have properly identified the battery BMS model and Capacity, Turn OFF the system your connection is properly set up.
Always install cables in accordance with installation guidelines and avoid long cable runs to prevent excessive voltage drops

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5.4 Communication & Control Panel
5.4.1 Terminal Function and Definition
The terminal layout is shown in the following figure:
Attention：Interface-C is an RJ45 Port corresponding to the CAN Bus pin definition shown
below

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5.5 DIP Switch Settings
Always configure the DIP switch settings BEFORE connecting any power cables to the battery terminals B+ and B-.
The battery module must be restarted for DIP switch settings to take effect
When connecting to an inverter which has BMS-CAN communication, switch #5 on the Master battery module must always be set
to ”ON”.
5.5.1 Stand Alone Battery
5.5.2 (Master + Slave#1)
5.5.3 (Master + Slave#1 + Slave#2)
5.5.4 (Master + Slave#1 + Slave#2 + Slave#3)
5.5.4 (Master + Slave#1 + Slave#2 + Slave#3 + Slave#4)