Weco HeSU 4K4-R19/4 Product Manual
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Weco HeSU 4K4-R19/4 Product Manual

Low voltage universal stackable model, 48v household energy storage system, bms-can v3.0
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WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL
48V Household Energy Storage System UNIVERSAL 4K4
Product manual HESU Max 5 units in Parallel Max 5 Clusters
Model type HeSU UNIVERSAL STACKABLE UNITS
BMS-CAN V3.0
Version ： V1.07.1-November 2019
HeSU 4k4 UNIVERSAL STACKABLE * HIGH CURRENT
V_1.07.1_2019
P
age-1

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Summary of Contents for Weco HeSU 4K4-R19/4

  • Page 1 WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL 48V Household Energy Storage System UNIVERSAL 4K4 Product manual HESU Max 5 units in Parallel Max 5 Clusters Model type HeSU UNIVERSAL STACKABLE UNITS BMS-CAN V3.0 Version ： V1.07.1-November 2019 HeSU 4k4 UNIVERSAL STACKABLE * HIGH CURRENT V_1.07.1_2019...
  • Page 2 WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL HeSU 4k4 UNIVERSAL STACKABLE * HIGH CURRENT V_1.07.1_2019 age-2...
  • Page 3 WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL 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...

  • Page 4: Table Of Contents

    WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL TABLE OF CONTENTS STATEMENT PREFACE INFORMATION IN THIS MANUAL 2.1 About this Manual 2.2 Use Range 2.3 Additional Information 2.4 Symbols Used SAFETY 3.1 Warnings and Notification 3.2 Safety Guidelines PRODUCT OVERVIEW 4.1 Product Introduction...

  • Page 5: Statement

    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.

  • Page 6: Preface

    WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL 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.

  • Page 7: Safety

    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.

  • Page 8: Product Overview

    WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL 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.

  • Page 9: Product Identification Labels

    WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL 4.3 Product Identification Labels 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.

  • Page 10: System Installation

    WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL 5 SYSTEM INSTALLATION The battery is packed in a carton box. The total weight exceeds 50Kg 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.
  • Page 11 WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL 5.2.1 Parts list (Standard Kit 100A) Number Name Quantity Description Image Battery case Battery Positive and negative Short power cable Ring terminal (Stack KIT) connection Fixed front screws Screws 5x35 (Stack KIT)
  • Page 12 WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL 5.2.2 Recommended Installation Tools Screw Driver Set Allen Key Set Drill + Hammer Multimeter + Current clamp RS 232/USB+screw terminal (insulated) Electrician Scissors Wrench set Lifting strap + mechanical lifter 5.2.3 Personal Protective Equipment HeSU 4k4 UNIVERSAL STACKABLE * HIGH CURRENT V_1.07.1_2019...

  • Page 13: Installation Procedure

    WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL 5.3 Installation Procedure 5.3.1 Battery Controls and Connections RUN/STOP Button BATTERY HANDLE RUN/STOP Button 2 RS 485 PARALLEL A/B RS 232 PLUG DIP SWITCH BMS CAN D/I-D/O RS 232 / LAN connection...
  • Page 14 WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL 5.3.2 Installation/Assembly Method 5.3.2.1 Installation of accessories and preparatory phases Phase 1: Choose the support surface carefully, the batteries have a weight of over 50 kg each and can reach 270 kg including the accessories, in a stack of five batteries.
  • Page 15 WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL Once the support feet have been installed, place the first battery on the ground surface in and check that the battery is even and that all four feet are making connection with the ground surface.
  • Page 16 WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL Continue installation of the three perimeter support brackets to ensure that the second battery is securely installed on top of the first battery. CAUTION Each battery weighs more than 50kg and must be installed with the help of a mechanical lift, and / or with at least...
  • Page 17 WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL 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.
  • Page 18 WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL After all cables have been connected, install the front plate protective covers as shown below. Always start at the bottom and work up to the top. Always install cables in accordance with installation guidelines and avoid long cable runs to prevent excessive voltage drops...

  • Page 19: Communication And Control Panel

    WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL 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...

  • Page 20: Dip Switch Settings

    WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL 5.5 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.
  • Page 21 WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL 5.5.3 (Master + Slave#1 + Slave#2) MASTER SLAVE1 SLAVE2 MASTER SLAVE#1 SLAVE#2 5.5.4 (Master + Slave#1 + Slave#2 + Slave#3) MASTER SLAVE#1 SLAVE#2 SLAVE#3 5.5.4 (Master + Slave#1 + Slave#2 + Slave#3 + Slave#4)

  • Page 22: Parallel Battery Wiring Connections

    WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL 5.6 Parallel Battery Wiring Connections ATTENTION PARALLEL BATTERY INSTALLATION MUST FOLLOW THE WIRING CONNECTIONS SHOWN IN THIS SECTION A WRONG WIRING CONNECTION CAN DAMAGE THE BATTERY AND POTENTIALLY CAUSE PERSONNEL INJURIES...
  • Page 23 THE DRAWINGS IN THIS MANUAL ARE FOR REFERENCE ONLY. IF THE DRAWINGS IN THIS MANUAL DO NOT MATCH THE ACTUAL PRODUCT THAT IS BEING INSTALLED, DO NOT PROCEED. ENSURE THAT THE BATTERY IS ISOLATED, ALL CONNECTIONS REMOVED, STORE THE BATTERY IN A SAFE PLACE AND CALL WECO PRODUCT ASSISTANCE FOR SUPPORT. 5.6.1...
  • Page 24 WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL 5.6.3 Master + Slave#1 + Slave#2 + Slave#3 CAN BMS PORT 5.6.4 Master + Slave#1 + Slave#2 + Slave#3 + Slave#4 CAN BMS PORT HeSU 4k4 UNIVERSAL STACKABLE * HIGH CURRENT V_1.07.1_2019...

  • Page 25: Battery Activation And Shutdown

    6.1 Panel buttons and LEDs Explanation Attention: The drawing is for reference only. If the actual battery has a different configuration. Stop all installation activity, ensure that the battery is disconnected and in a safe condition and contact WECO support center Name...

  • Page 26: Parallel Battery Configuration

    WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL 6.3 Parallel Battery Configuration The voltage difference between any of the batteries in the stack must not be greater than 2V. Otherwise, the BMS will not allow the batteries to be activated in a parallel connection.

  • Page 27: Troubleshooting

    WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL 7 TROUBLESHOOTING ALARM SYMPTOM SOLUTION GREEN (NORMAL) ORANGE (WARNING) RED (FAULT) OVER CURRENT ALARM The battery relay is Reduce charge or discharge disconnected during charging current or discharging, and the battery fault light is flashing.
  • Page 28 WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL CELL DAMAGE Battery box in the state of no Please contact the after- The real-time display of the cell charge and no discharge, a sales service. voltage on the monitoring software is...

  • Page 29: Software Guide

    FOR AUTHORIZED TECHNICIANS ONLY 8 SOFTWARE GUIDE WECO OLP RS232 (USB / RS232 converter is necessary to communicate with the battery) *_PC -Battery communication and set up for 232-USB device is available for auth. Installers. Launch the exe file WeCo_Monitor and wait for self installation...
  • Page 30 Connect the RS232 converter and search the relative com on the PC settings (device manager of Windows_) Select the COM port from the Main page of the WeCo Monitor, then pres CONNECT Follow the instruction and wait for the data on the screen.
  • Page 31 For manual adjustment to change the batteries set limits select the Operator Setting 1 TAB and change the setting in the permitted values (This operation is possibile only with batteries connected to the WeCo Server (Wifi or LAN) HeSU 4k4 UNIVERSAL STACKABLE * HIGH CURRENT V_1.07.1_2019...
  • Page 32 CELL EQUALIZATION MANUAL (not public) and activate the manual procedure. IMPORTANT> After the first Manual/Forced Equalization the single cell equalizer will return in Auto mode within 24h Factory reset. (this must be authorized from the WECO Tech Department ) follow the instruction of the FACTORY RESET PROCEDURE HeSU 4k4 UNIVERSAL STACKABLE * HIGH CURRENT V_1.07.1_2019...

  • Page 33: Product Compatibility List (See Also 8.5)

    WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL 9 PRODUCT COMPATIBILITY LIST (See Also 8.5) CAN BUS INTERFACE ACTIVE/AVAILABLE Number Inverter brand Inverter model Parallel Units HeSU 4.4 LFP SoFar / ZCS Azzurro SP3000/HYD 5x4,4=22kWh x5 -- 110kWh Sunny Island...
  • Page 34 WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL NO CANBUS CONNECTION AVAILABLE (INVERTER SETTINGS) Any inverter can be used with WeCo Batteries by setting the voltage and Current Value as per Battery datasheet. Description Inverter Low Voltage CUT Inverter...
  • Page 35 WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL SINGLE CLUSTER CONFIGURATION 100A NO HUB IS REQUIRED FOR SINGLE CLUSTER Single cable 25mm² Single cable 25mm² NEGATIVE POSITIVE CAN BUS Communication Cable to the inverter MASTER BATTERY SLAVE # 1...
  • Page 36 WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL If more power/current is required must refer to the next paragraph SINGLE CLUSTER CURRENT ALLOWANCE (Standard CABLES kit connection 100A) SINGLE CLUSTER Charge/ Discharge Batteries in parallel with 25mm2 parallel connection cable...
  • Page 37 WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL 100A single Cluster configuration Kit KIT ORDER CODE STK 4K4-100- STANDARD KIT ( Order Ref. -STK 4K4-100-) 2 x cable diam. 25mm length 0,2mt terminal Ring Supplied into the terminal on both ends 1 x Red,...
  • Page 38 WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL SINGLE CLUSTER CONFIGURATION 300A -Double BUS BAR- NO HUB IS REQUIRED FOR SINGLE CLUSTER 2 x 50mm² MASTER 2 x 50mm² POSITIVE NEGATIVE CAN BMS PARALLEL CONNECTION CUSTOM COPPER BUS BAR...
  • Page 39 WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL 40 Nm Parallel Screw Terminal must be checked every 3 months SPECIAL BUS BAR FOR PARALLEL CONNECTION ABOVE 100A UP TO MAX 300A ( BUS BAR MODEL -STK 4K4-300-) HeSU 4k4 UNIVERSAL STACKABLE * HIGH CURRENT V_1.07.1_2019...
  • Page 40 WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL ATTENTION: BUS BAR IS MANDATORY FOR SYSTEMS ABOVE 100A DO NOT USE DIFFERENT BUS BAR TYPES OR CABLES 300A single Cluster configuration Kit KIT ORDER CODE-STK 4K4-300- STANDARD KIT ( Order Ref. -STK 4K4-300-)

  • Page 41: Multi Cluster Hub Controller

    SEE THE POWER/CURRENT CONFIGURATION BELOW EACH BATTERY PACK AND EACH CLUSTER MUST HAVE THE SAME SOC % ABOVE 100A MUST USE THE BUS BAR PROVIDED BY WECO ( Order Ref. -STK 4K4-300-) EACH CLUSTER MUST HAVE THE SAME NUMBER OF BATTERY PACKS HeSU 4k4 UNIVERSAL STACKABLE * HIGH CURRENT V_1.07.1_2019...
  • Page 42 This BMS BMU Master Hub is mandatory when more than one cluster is connected on a common bus bar. The WECO HUB can manage a maximum of 5 clusters composed by a maximum of 5 batteries in each cluster. Interface description and connector...
  • Page 43 WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL WECO HUB Dimensions Fix on the wall with 4 x 6mm screw + washer Weight: 8kg HeSU 4k4 UNIVERSAL STACKABLE * HIGH CURRENT V_1.07.1_2019 age-43...
  • Page 44 WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL KIT ORDER CODE MASTER HUB 300 LV-5 HIGH CURRENT KIT ( MASTER HUB 300 LV-5) 1 x WeHUB parallel Controller Packed in carton box 1 x WeHUB cable power supply HeSU 4k4 UNIVERSAL STACKABLE * HIGH CURRENT V_1.07.1_2019...

  • Page 45: Multi Cluster Current Limitations

    WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL MULTI CLUSTER CURRENT LIMITATIONS CONTROL LOGIC AND PROTECTION LIMIT The inverter, if has the functions, must be set with the below restrictions in addition to the BMS control logic settings. CURRENT SETTING / BMS CURRENT LIMIT...
  • Page 46 WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL ATTENTION! Multiple Clusters configuration is allowed only by using the specific BUS BAR for the parallel connection between various modules The current limit is set by the WeHUB ( BMU-BMS MASTER COMBINER) according with the quantity of clusters and...

  • Page 47: Multi Cluster Connection Configurations

    WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL MULTI CLUSTER CONNECTION CONFIGURATIONS GENERAL SYSTEM DESCRIPTION WE-HUB IS MANDATORY WHEN MORE CLUSTER ARE CONNECTED IN PARALLE MASTER CAN of EACH CLUSTER NEGATIVE BUS BAR 2 x 50mm² 2 x 50mm²...
  • Page 48 WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL EACH BATTERY AND EACH CLUSTER MUST HAVE THE SAME SoC% and VOLTAGE ALL THE BATTERY MODULES MUST HAVE THE SAME FIRMWARE SLAVE SLAVE SLAVE MASTER More Inverters (Max 300A Cluster 3 of 5...
  • Page 49 WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL HUB power supply OTHER EXAMPLES OF CLUSTERS (2 and 3 Modules each) HeSU 4k4 UNIVERSAL STACKABLE * HIGH CURRENT V_1.07.1_2019 age-49...
  • Page 50 NO COMMUNICATION INVERTER SETTINGS (general) FOR INVERTERS WHICH CANNOT COMMUNICATE WITH THE BATTERIES USING THE CANBUS PORT, THEY WILL NEED TO BE CAREFULLY SET IN ACCORDANCE WITH WECO BATTERY SPECIFICATIONS. THE BELOW CHART REFERS ONLY TO A SINGLE CLUSTER CONFIGURATION.
  • Page 51 WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL OUTBACK INVERTER -NO COMMUNICATION- Please contact weco@weco.uk.com, do not install inverter without BMS-CAN interface without prior approval of WeCo technical team INVERTER 80% DoD, 10k cycles 90% DoD, 8k cycles 100% DoD, 7k Absorb Voltage and Time 54.0 30 min...
  • Page 52 WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL OutBack Inverter and Charge Controller Setup Procedure At the end of the charging status, near the SOC 100% the voltage may rise fast and the this can be problematic, the current drops to nearly zero and the contactor may open the circuit in order to protect from overvoltage If the charge voltage creeps up to the BMS input protection voltage (~58.5 - 59 volts), then the Charge Termination...
  • Page 53 The time setting is typically about 1-3 minutes depending on the battery. Return Amps is typically 2-3% of the battery amp-hours, but use the settings in Table 2 with the WeCo batteries. The charging current drops off more dramatically when the charging voltage is met.
  • Page 54 WeCo - HeSU 4K4 Low Voltage UNIVERSAL STACKABLE MODEL However, a single battery only has 86 Ah, and the lowest FN-DC setting is 100 Ah. Therefore a single battery with the FN-DC will cause SoC reading errors. Since two batteries or more will be required in most applications, it is not recommended to use single batteries with OutBack inverter systems.

  • Page 55: Inverter Settings

    46,5V 0,8C/ 1C 0,1C 0,2C Variable Time Re-Launch 10-30min Absorption 20-30min min Please contact weco@weco.uk.com, do not install inverter without BMS-CAN interface without prior approval of WeCo Single Cell Curve SOC-OCV Curve Charge Disharge 100% SOC/% HeSU 4k4 UNIVERSAL STACKABLE * HIGH CURRENT V_1.07.1_2019...
  • Page 56 NOTE: This manual is subjected to continuous implementation. Before install your WeCo batteries please contact our assistance team in order to have the latest manual and any additional support. Safety improvement is our priority, please cooperate with us to improve the system, any suggestion is well accepted.

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