Weco HeSU 5K3-LV HV User manual

WeCo 5K3-LV-HV
HeSU 5K3-LV HV Page 1 of 69 V_1.1_21-Nov-2020_LV-HV
Energy Storage System UNIVERSAL 5K3
LOW VOLTAGE &HIGH VOLTAGE

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ATTENTION: The battery can explode under heavy impact.
ATTENTION: The batteries weight exceeds 25kg. Appropriate mechanical lifting
equipment must be used.
ATTENTION: The battery can explode and must not be exposed to open flames or
other extreme sources of heat
ATTENTION: The battery terminals must be disconnected before commencing any
work on the battery.
ATTENTION: This battery can accumulate parasite current. Do not touch the B+
and B- terminals. Always check the B+ and B- terminals with a voltmeter. Always
ensure that there is ZERO volts present on the terminals before performing any
operation on the battery.
ATTENTION: Always wear Individual protection devices and follow the safety plan of
this manual.
This Battery must be recycled by a certified professional company

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Contents
SECTION-1: INSTALLATION & PRE-OPERATIONAL PROCEDURES.... 9
1.1 Module Handling and Lift Out from Box.......................................................................9
1.1.1 Package Information and System Configuration List.............................................................................. 10
1.2 Wall Mount or Stack Mount Configuration.................................................................10
1.2.1 Battery Dimensions........................................................................................................................... 10
1.2.2 Wall Mount........................................................................................................................................ 10
1.2.3 Stack Mount........................................................................................................................................ 12
1.3 Battery Terminal Function Definition.................................................................................14
1.4 Out of the Box Pre-Operational Check.........................................................................15
SECTION-2 LOW VOLTAGE CONFIGURATION................16
2.1 Product Introduction............................................................................................................ 16
2.1.1 Identifying the individual module............................................................................................................16
2.1.2 Product Identification and labels..............................................................................................................17
2.1.3 Accessory List (Standard Kit 120A single module LV)...........................................................................17
2.1.4 Necessary Installation Tools.................................................................................................................... 18
2.1.5 Personal Protective Equipment........................................................................................................... 18
2.2 Low Voltage Module Wiring and Set Up............................................................................ 19
2.2.1 Battery Connections............................................................................................................................19
2.2.2 Battery Terminal Definition................................................................................................................ 20
2.3 Low Voltage DIP Switch Settings........................................................................................ 20
2.3.1 Stand Alone Battery............................................................................................................................ 21
2.3.2 Parallel Connection (Master + Slave #1)............................................................................................ 21
2.3.3 Parallel Connection (Master + Slave #1 + Slave #2).......................................................................... 21
2.3.4 Parallel Connection (Master + Slave #1 + Slave #2 + Slave #3)........................................................21
2.3.5 Parallel Connection (Master + Slave #1 + Slave #2 + Slave #3 + Slave #4)......................................21
2.4 Parallel Battery Wiring Connections............................................................................ 22
2.4.1 Low Voltage Single Stack Power and Data Connections (5-Modules)...............................................23
2.5 Module Activation and Shutdown............................................................................... 25
2.5.1 LED Visual Indication Lights.................................................................................................................. 25
2.5.2 Stand Alone Battery Front Panel Control................................................................................................ 27
2.5.3 Parallel Battery Configuration................................................................................................................. 27
2.6 LV Product Compatibility List + Maximum Modules Permitted per Cluster............... 29
2.6.1 Direct Parallel with CAN Communication......................................................................................... 29
2.6.2 LV Direct Parallel Without BMS Communication with Inverter.............................................................30

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2.7 Overview of Multi Cluster System.............................................................................. 31
2.8 CAN Hub for Multi Cluster Configuration................................................................32
2.8.1 CAN Hub Dimensions........................................................................................................................ 34
2.8.2 Control Logic and Protection Limit.................................................................................................... 35
2.8.3 CAN Hub General System Description................................................................................................... 36
2.8.4 Multi Cluster Configurations.............................................................................................................. 38
2.8.5 Cluster Configuration Accessories...........................................................................................................41
2.8.6 Inverters with no Communication Facility.............................................................................................. 42
SECTION-3 HIGH VOLTAGE CONFIGURATION...............44
3.1 Product Introduction............................................................................................................ 44
3.1.1 Identifying the Individual Module........................................................................................................... 45
3.1.2 Product Identification and labels..............................................................................................................45
3.1.3 Accessory List (Standard Kit).................................................................................................................. 46
3.1.4 Necessary Installation Tools.................................................................................................................... 46
3.1.5 Personal protective equipment............................................................................................................ 47
3.2 High Voltage Module Wiring and Set Up........................................................................... 48
3.2.1 Battery Connections............................................................................................................................48
3.2.2 Battery Terminal Definition................................................................................................................ 49
3.3 High Voltage Module Configuration – HV Box 750Vdc-............................................50
3.4 High Voltage DIP Switch Settings..................................................................................51
3.4.1 Serial Tower Connection #1 Set Up of the HV box CAN Communication Loop.............................. 52
3.5 Serial Battery Wiring Connections............................................................................... 53
3.5.1 High Voltage Power Connections (12-Modules)................................................................................ 54
3.5.2 DATA Connections (Example of 12-Modules)................................................................................... 55
3.5.3 HV BOX Connections.........................................................................................................................59
3.6 Module Activation and Shutdown............................................................................... 65
3.6.1 LED Visual Indication Lights.................................................................................................................. 65
3.6.2 Stand Alone Battery Front Panel Control................................................................................................ 66
3.7 HV Product Compatibility List + Maximum Modules Admitted per Cluster................68
3.7.1 Direct Serial with CAN Communications.......................................................................................... 68
3.7.2 Direct Connection without CAN Communications................................................................................. 69

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Statement:
The information and guidance contained in this manual is related to the WeCo 5K3 – LV – HV Stackable model of battery
This manual contains two sections:
Section 02 is for LOW VOLTAGE APPLICATION
Section 03 is for HIGH VOLTAGE APPLICATION
In case of product upgrades or 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.
New batteries always ship with the latest version of firmware.
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 and can be updated by your local installer.
You can also write an email to ser[email protected] to understand the upgrade procedure.
ATTENTION
This battery model 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.
PREFACE
Thank you for choosing our product. We will provide you with a high-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.

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Product Overview
WeCo’S 5k3 LV HV Stackable Module is a DUAL VOLTAGE module that can be used in a Low Voltage configuration or in a High
Voltage configuration.
For LOW VOLTAGE (48-58Vdc) Configuration Refer to Section-2
For HIGH VOLTAGE (150-750Vdc) Configuration Refer to Section-3
The 5K3 LV-HV Stackable module is designed for home and commercial applications from 5 kWh up to 132 kWh in
Low Voltage configuration and from 20 kWh up to 680kWh in High Voltage configuration
INFORMATION IN THIS MANUAL
About this Manual
This manual relates only to the WeCo 5k3 LV-HV 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.
Use Range
This installation guidance applies for the High Voltage and Low Voltage Inverters.
Make sure to identify the correct inverter charging parameters before connecting to the battery.
Each 5k3 LV-HV module has two different circuits and according with the inverter voltage range the installer must choose the correct
battery configuration for the inverter voltage range.
Additional Information
Specification of the product can be changed without any notice to customers for system improvements.
Symbols Used
Symbol Meanings：
CAUTION：
CAUTION represents hazardous situations which can cause light injuries if not avoided.
NOTICE：
NOTICE represents the situations which can cause damage to property if not avoided.
INFORMATION：

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INFORMATION provides tips that are valuable for optimum installation and operation of the product.
SAFETY
Warnings and Notification
Installation environment requirements: The 5k3 LV-HV Stackable module is designed for household/commercial purposes. For
installation, it must be installed in a location complying with IP20 (IP 55 or 65 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 and no responsibility will be accepted for any related accident or damage.
Safety Guidelines
CAUTION：
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 5K3 LV-HV module must be made only by qualified professional personnel.
When installed and operated in accordance with this manual, the 5K3 LV-HV module will perform in 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 the WeCo 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.
CAUTION：
The weight of an individual 5k3 LV-HV module is over 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.
ATTENTION
The high voltage configuration must have a minimum number of 4 modules in order to reach at least 200Vdc in series.
The maximum number of modules that can be stacked is 6 on each tower (due of the tower height and stability)
The maximum Voltage string series in HV configuration is 750Vdc and the HV-BOX it`s a safety device that must be installed
ZCS AZZURRO is compatible only with HV BOX 750Vdc

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ATTENTION
The stack configuration shall be concluded by interlocking the modules by using the module feet as shown below
GENERAL PREPARATION
Before Installation
Ensure that all the modules are turned OFF
Battery installation location should be at least 20m away from sources of heat, sparks or other sources of extreme temperature.
Battery connecting cables should be as short as possible to prevent excessive voltage drops..
Batteries with different capacity, different type/model or design or from different manufacturers cannot be connected together.
1. Before connecting the battery, the battery positive and negative poles need to be carefully checked to
ensure correct installation.
2. The installation location must be on a flat ground, in a dry clean and protected room, away from water
and humidity.
1) Original Position of the feet
2) Loose both screws and
remove the feet
3) Install and secure the feet across two
modules by using the original screws

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The mechanical installation method for the 5K3 LV-HV modules can be considered ‘’ conceptually’’ the
same for HV and LV configurations
The installer who intends to install the 5K3 LV-HV module in the HV configuration shall read this entire
manual including the HV configuration information included in Section-3 of this manual
SECTION-1: INSTALLATION & PRE-OPERATIONAL PROCEDURES
1.1 Module Handling and Lift Out from Box
The battery is always delivered in WALL mode and it is therefore necessary for the installer to make simple changes to
install the STACK kit. Below are the installation phases.
ATTENTION
The battery must be lift by 4 persons by using the 4 handles
2 Handles are inbuilt and the other two are provided as temporary handles to be used as shown below
Open the carton box, find the portable and retractable handles, position them and proceed with the lifting up.

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1.1.1 Package Information and System Configuration List
The battery box is packed in cartons with accessories.
When you receive the goods, please read the configuration list carefully to make sure that the battery box and accessories are
received in the correct quantities and type and visually inspect to ensure that they are free from damage.
Refer to Section 2.1.3 for Low Voltage packing list and to Section 3.1.3 for High Voltage packing list.
1.2 Wall Mount or Stack Mount Configuration
NOTE: The LV/HV 5K3 battery module ships as standard in the wall mount configuration.
1.2.1 Battery Dimensions
1.2.2 Wall Mount
Step 01: Install the wall bracket by using the wall plugs and screws contained in the battery kit.
The wall must be inspected before proceeding with the bracket installation, a local civil engineer should assess the correct installation
method.
STEP 01
100/120cm

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ATTENTION
The battery weighs more than 52kg and must be installed with the help of a mechanical lift, and/or with at least two people
equipped with suitable suction cups for mechanical lifting or lifting straps
The Bracket must be installed on a flat and vertical wall.
The steel bracket must be flush to the wall without any empty spaces between the wall surface and the back side of the bracket.
Make sure to have adequate space to install the battery before proceeding with the installation.
Step 02:Install the battery by fitting the back bracket of the module with the wall bracket interlocking
This operation must be conducted with a mechanical lifting device and/or with at least three specialized installers
Make the battery module is stable and properly locked into the upper interlocking plug
100/120cm
STEP 01A
Max 140cm
STEP 02
Min 30cm

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Step 2a: In case of multiple module installation make sure to respect the distance between the modules and the ceiling.
1.2.3 Stack Mount
ATTENTION
The battery weighs more than 52kg and must be installed with the help of a mechanical lift, and/or with at least two
people equipped with suitable suction cups for mechanical lifting or lifting straps.
As previously stated in this manual, the 5K3 module comes as standard in wall mount configuration.
To install in the Stackable configuration, the screws on the back of the battery module must be removed.
1. Remove the back-side wall support plate using a cross screwdriver. The plate has 5 screws.
25cm
25cm
Min 30cm

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2. Once the wall bracket support has been removed, start stacking the second module on top of
the first module laid on the ground by using the front retractable handles.
ATTENTION
Before stacking the batteries the installer must check the maximum permissible floor load. WeCo recommends that the
installer obtains approval from a civil engineer.
For vertical ground mounted the support surface of the battery is distributed on 4 feet 10x4 cm, make sure to install a
distribution plate or make a proper foundation to support the weight.
In case of horizontal installation, the installer must prepare an adequate distribution plate on the floor in order to make a
safe and stable support for the pile of batteries.
Make sure the support and/or the floor surface is adequate to support the battery load.
1-First module on the ground platform
2-Lift the second module and place it on the
first module
53 Kg
106 Kg
159 Kg
212 Kg
265 Kg

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1.3 Battery Terminal Function Definition
The terminal layout is shown in the following figure:
LOW VOLTAGE Wiring definition table
Interface
Name
Function
A
LV POLE +
LOW VOLTAGE POSITIVE (+) Screw Terminal
B
LV POLE +
LOW VOLTAGE NEGATIVE (-) Screw Terminal
C
DIP SWITCH
DIP SWITCH Address HUB 8 PINS (LV PARALLEL ID SET UP and HV ADDRESS PATH)
D
RS 485 A LV
LOW VOLTAGE COMMUNICATION PORT RS 485
E
CAN A
CAN – BMS to LOW VOLTAGE INVERTER
F
D/I
Digital Input
G
D/O
Digital Output
H
CAN B
HIGH VOLTAGE SERIAL IDENTIFIER RJ45 CAN PORT
I
RS 485 LV
LOW VOLTAGE COMMUNICATION PORT RS485
L
HV POLE -
HIGH VOLTAGE POSITIVE (+) Fast Connector Terminal for serial connection
M
HV POLE +
HIGH VOLTAGE NEGATIVE (-) Fast connector Terminal for serial connection
N
GND
Ground terminal
Attention：Interface E: RJ45 port corresponding to the CAN bus pin definition
A
B
C
D
E
F
G
H
I
L
M
N

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1.4 Out of the Box Pre-Operational Check
Attention: Do not make any connection to the battery until you have thoroughly read and understood this
entire manual.
The Power Button is located on the right side of the battery as shown above. The Power Button is a multi-colored button.
Pressing the Power Button for 2 seconds will initiate the start up process of the battery.
The Power Button will settle as a steady green color if the battery is operating correctly.
If the battery is low on charge the Power Button will display a steady yellow color.
If the Power Button displays a flashing red color there is a fault and you should not attempt any further operation of the
battery and contact WeCo support on [email protected].
There is also an RS232 monitoring Port which will allow you to check all parameters of the battery module. Full instruction
on how to interface to the RS232 Port can be found in this manual.
Attention: At this stage, after you have determined that the battery is functioning correctly, it is mandatory
to switch the battery off and follow the instructions and guidance in this manual very carefully before attempting any
configuration or connection to the battery module.
To switch the battery of (shutdown the battery) simply press Start/Stop button for 5-seconds and the green LED will go off,
confirming that they battery has shutdown correctly.
Attention: Read this manual thoroughly and always follow the guidance in this manual before and while
performing any installation procedure.

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SECTION O2 LOW VOLTAGE CONFIGURATION
SECTION-2 LOW VOLTAGE CONFIGURATION
2.1 Product Introduction
The 5K3 LV-HV modules can be used as an on-grid or off-grid energy storage system. It is not recommended 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 5K3 LV-HV modules in parallel will nullify the product guarantee.
2.1.1 Identifying the individual module

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2.1.2 Product Identification and labels
The nameplate label describes the product parameters and is attached to the product. For details, please refer to the nameplate
label of the product. For safety reasons, the installer must have a thorough understanding of the contents of this manual before
installing the product.
2.1.3 Accessory List (Standard Kit 120A single module LV).
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.
Number
Name
Quantity
Description
Image
1
Power Cable
2
2x25mm²AWG cable 2.5 (m)
each Red/Black
2
CAN cable RJ45
Parallel Connection
1
100cm
3
Earthing Screw
1
M5 Allen key
4
BMS/STD
1
1 BMS std Cable 100cm
Front Cover
Insulated Supports
Battery Module
Retractable Handles
Plug In Handles
Power Button

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2.1.4 Necessary Installation Tools
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)
2.1.5 Personal Protective Equipment

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2.2 Low Voltage Module Wiring and Set Up
2.2.1 Battery Connections
CAUTION: The LV fuse is contained in the left portion of the module as shown above.
The access to the fuse is restricted to the WeCo assistance team and the protection lid cannot be opened by
anyone apart from WeCo. The same applies to the HV fuse.
LOW VOLTAGE CONNECTION
TERMINAL
REMOVE THE STEEL CAP TO
OPERATE AS LOW VOLTAGE
LEAVE THE PROTECTION CAPS
TO PROTECT THE HV FAST
TERMINAL
HV TERMINALS
LOW VOLTAGE
TERMINAL BLOCK
COMM BOARD
LOW VOLTAGE FUSE
Behind Panel
Do not Open
HIGH VOLTAGE FUSE
Behind Panel
Do not Open
RS232 Monitoring Port
Multi-Color Power Button

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2.2.2 CAN PIN OUT
The terminal layout is shown in the following figure:
2.3 Low Voltage DIP Switch Settings
ATTENTION
ALWAYS CONFIGURE THE DIP SWITCH SETTINGS BEFORE CONNECTING ANY POWER CABLES TO THE BATTERY
TERMINALS B+ AND B-.
WHEN CHANGES HAVE BEEN MADE TO DIP SWITCH SETTINGS THE BATTERIES MUST ALWAYS BE RESTARTED FOR THE
CHANGES TO TAKE EFFECT.
POWER CABLE CONNECTIONS MUST BE MADE IN STRICT ACCORDANCE WITH THE INSTRUCTIONS IN THIS MANUAL.
INCORRECT POWER CONNECTIONS CAN DAMAGE THE BATTERY AND CAUSE INJURIES
WHEN THE INVERTER HAS A CANBUS COMMUNICATION PORT SWITCH#5 OF THE MASTER BATTERY MUST ALWAYS BE
SET TO “ON”.
MASTER
Attention: All drawings are for reference only, always refer to the physical product as the standard. If the manual does
not match the physical product stop all actions, remove any connections and store the batteries in a safe place, call WeCo
product assistance for support.