Grenex ES Box -1
User Manual

ES Box1 Lithium Iron Phosphate Battery System

LITHIUM 51.2V 100Ah

• Advanced BMS with current limiting function
• CAN Bus, fully integrates and communicates with leading Inverter brands(Growatt,SOLAX,LUXPower,DEYE,MUST, Voltronic,Victron,SMA…etc. )
• Excellent high temperature performance
• High Cycle Life and Service Life
• High Energy Density and conversion efficiency
• Complete with integrated Battery Management System
• Compatible with most Inverters and chargers
• Low self discharge
• Easy wall mount or shelf rack installation
• Heavy duty side handles for easy handling and mounting on the wall
• Built in protection for over-charge, over-discharge & over-temperature

Statement of Law

Copyright of this document belongs to Greene Pty Ltd. part of this documentation maybe excerpted, reproduced, translated, annotated or duplicated in any form or by  any means without the prior written permission of Greene Pty Ltd. All Rights Reserved.
This product complies with the design requirements of environmental protection and personal safety. The storage, use and disposal of the products shall be carried out in  accordance with the product manual, relevant contract or relevant laws and regulations.
Customer can check the related information on the website of Greene Pty Ltd when the product or technology is updated. Web URL： http://www.genex.co.za
Please note that the product can be modified without prior notice.

Safety Precautions

Warning

• Please do not put the battery into water or fire, in case of explosion or any other situation that might endanger your life.

• Please connect wires properly while installation, do not reverse connect.
  To avoid short circuit, please do not connect positive and negative poles with conductor (Wires for instance).

• Please do not stab, hit, trample or strike the battery in any other way.

• Please shut off the power completely when removing the device or reconnecting wires during the daily use or it could cause the danger of electric shock.

• Please use dry powder extinguisher to put out the flame when encountering a fire hazard, liquid extinguisher could result in the risk of secondary disaster.

• For your safety, please do not arbitrarily dismantle any component in any circumstances unless a specialist or an authorized one from our company, device breakdown  due to improper operation will not be covered under warranty.

Caution

• We have strict inspection to ensure the quality when products are shipped out, however, please contact us if case bulging or another abnormal phenomenon.
• For your safety, device shall be ground connected properly before normal use.
• To assure the proper use please make sure parameters among the relevant device are compatible.
• Please do not mixed-use batteries from different manufacturers, different types and models.
• Please confirm with Grenex when the old and new 5.12 kWh battery needs to used together.
• Ambient and storage method could impact the life span and product reliability, please consider the operation environment abundantly to make sure device works in  proper condition.
• For long-term storage, the battery should be recharged once every 6 months, and the amount of electric charge shall exceed 80% of the rated capacity.
• Please charge the battery in 18 hours after it discharges fully and starts over-discharging protection.
  Formula of theoretical standby time: T=C/I (T is standby time, C is battery capacity, I is total current of all loads).

Preface

Manual declaration
The Grenex ES Box -1 lithium iron phosphate battery energy storage system can provide energy storage solutions for photovoltaic power generation users through parallel  combination. During the day, the excess power of photovoltaic power generation can be stored in the battery. At night or when needed, the stored electrical energy can be  used to supply power to the electrical equipment, which can improve the efficiency of photovoltaic power generation, peak load shifting, and emergency power backup.
This user manual details the basic structure, parameters, basic procedures and methods of installation and operation and maintenance of the equipment.

Introduction

1.1 Brief Introduction
Grenex ES Box -1 lithium iron phosphate battery system is a standard battery system unit, customers can choose a certain number of Grenex ES Box -1 according to their  needs, by connecting parallel to form a larger capacity battery pack, to meet the user’s long-term power supply needs. The product is especially suitable for applications with  high operating temperatures, limited installation space, long power backup time and long service life.

1.2 Product Properties
Grenex ES Box -1 energy storage product’s anode materials are lithium iron phosphate, battery cells are managed effectively by BMS with better performance, the system’s  features as below:

• Comply with European ROHS, Certified SGS, employ non-toxic, non-pollution environment-friendly battery.
• Anode materials are lithium iron phosphate (LiFePO4), safer with longer life span.
• Carries battery management system with better performance, possesses protection function like over-discharge, over-charge, over-current, abnormal temperature.
• Self-management on charging and discharging, Single core balancing function.
• Flexible configurations allow parallel of multi battery for longer standby time.
• Self-ventilation with lower system noise.
• Less battery self-discharge, then recharging period can be up to 10 months during the storage.
• No memory effect so that battery can be charged and discharged shallowly.
• With wide range of temperature for working environment, -20 C, circulation span and discharging performance are well under high temperature. orc ~ +65o
• Less volume, lighter weight.

1.3 Product identity definition

| Be careful with your actions and be aware of the dangers.
---|---
| Read the user manual before using.
| The scrapped battery cannot be put into the garbage can and must be professionally recycled.
| After the battery life is terminated, the battery can continue to be used after it recycled by the professional recycling organization and do not discard it at will.
| This battery product meets European directive requirements.
| Battery voltage is higher than safe voltage, direct contact with electric shock hazard.
| Dangerous goods warning label on the top of the battery module.

Product Specification

2.1 Size and Weight
Table 2-1 Grenex ES Box -1 Device

Product| Nominal Voltage| Nominal Capacity| Dimension| Weight
---|---|---|---|---
Grenex ES Box -1| DC 51.2V| 100Ah| 600x500x145mm| =46kg
| | | |
| | | |

2.2 Performance Parameter
Table 2-2 Grenex ES Box -1 performance

2.3 Interface Definition
This section elaborates on interface functions of the front interface of the device.

Table 2-3 Interface Definition

2
3| DRY CONTACT Reset| /
Restart all battery settings
4| ADD| DIP switch
5| RS485| Communication cascade port, support RS485 communication
6| CAN| Communication cascade port, support CAN communication (factory default CAN communication)
7| RS232| Communication cascade port,battery connect to the host computer
8| Parallelly ParalleI2| Battery parallel connection ports
9| Positive socket| Battery output positive or parallel positive line
10| Negative socket| Battery output negative or parallel negative line

2.3.1 DIP switch definition and description
Table 2-4 Interface Definition

DIP switch position (host communication protocol and baud rate selection)

1| #2| #3| #4

Baud rate selection
ON| OFF
CAN: 250K,485: 9600| CAN: 500K,485: 9600

DIP switch description:
When the battery pack is connected in parallel, the host can communicate with the slave through the CAN interface. The host summarizes the information of the entire  battery system and communicates with the inverter through CAN or 485. The connection mode is divided into the following two cases:

Dial switch position
Table 2-4 Pin Definition

RS485-1 / CAN Communication Interface Definition:

Table 7 The RS 485-1 / CAN port definition

Table 2-5 LED status indicators

State| Normal / alarm / protection| RUN| ALM The power level indicates the LED| Explain
---|---|---|---|---
off| | | |
Shut down| Dormancy| off| off| off| off| off| All off
Standby| Normal| Flash 1| off| | According
instruction
to the to the (Power LED flash| electricity| Stand by
Alarm| Flash 1| Flash 3| Module low voltage
Charge| Normal
•
Alarm| Lighting
Lighting| off Flash 3| According instruction maximum| electricity
level indicates 2)| Alarm when overvoltage light off
Overcharge protection| Lighting off| off| Lighting| Lighting| Lighting| Lighting| If there is no charging, the indicator light is in standby state
Temperature, overcurrent, protection| Lighting| off| off| off| off| Stop charging
Discharge| Normal| Flash 3| off| According to the electricity instruction|
Alarm| Flash 3| Flash 3
Under voltage protection| off| off| off off| off| off| Stop discharge
Temperature, over-
current, short-circuit,
Reverse connection and failure protection| off| Lighting| off| off| off| off| Stop discharge
Stop charging and
discharging
Fail| | off| Lighting| off| off| off| off

Table 1 LED working status indication

25 – 50%
50 – 75%| off| off off| Fla2sh
off| off| off| Lighting
off| off| Flash| Lighting| off| off| Lighting| Lighting
off| Flash| Lighting| Lighting| off| Lighting| Lighting| Lighting.
| 75 – 100%| Fir| Lighting| Lighting| Lighting| Lighting| Lighting| Lighting| Lighting

Table 2 Capacity indication instructions

2.4 Battery Management System(BMS)
2.4.1 Voltage Protection
Discharging Low Voltage Protection：
When any battery cell voltage is lower than the protection value during discharging, The over-discharging protection starts, and the battery buzzer makes an alarm sound.  Then battery system stops supplying power to the outside. When the voltage of each cell recovers to rated return range, the protection is over.

Charging Over Voltage Protection：
When total voltage or any battery cell voltage reaches the protection value during charging, battery stops charging. When total voltage or a cell recover to rated return range,  the protection is over.
2.4.2 Current Protection
Over Current Protection in Charging：
When the charging current is greater than the protection value, the battery buzzer alarms and the system stops charging. Protection is removed after rated time delaying.
Over Current Protection in Discharging：
When the discharge current is greater than the protection value, the battery buzzer alarms and the system stops discharging. Protection is released after rated time delaying.

Note:
The buzzer sound alarm setting can be manually turned off on the background software, and the factory default is on.
2.4.3 Temperature Protection
Less/Over temperature protection in charging：
When battery’s temperature is beyond range of 0 ℃ ~+65 ℃ during charging, temperature protection starts, device stops charging.
The protection is over when it recovers to rated return range.
Less/Over temperature protection in discharging：
When battery’s temperature is beyond range of -20℃~+65℃ during discharging, temperature protection starts, device stops supplying power to the outside.
2.4.4 Other Protection
Short Circuit Protection：
When the battery is activated from the shutdown state, if a short circuit occurs, the system starts short-circuit protection for 30 seconds.
Self-Shutdown：
When device connects no external loads and power supply and no external communication for over 72 hours, device will dormant standby automatically.
Caution
Battery’s maximum discharging current should be more than load’s maximum working current.

Installation and Configuration

3.1 Ready for installation
Safety Requirement
This system can only be installed by personnel who have been trained in the power supply system and have sufficient knowledge of the power system.
The safety regulations and local safety regulations listed below should always be followed during the installation.

• All circuits connected to this power system with an external voltage of less than 48V must meet the SELV requirements defined in the IEC60950 standard.
• If operating within the power system cabinet, make sure the power system is not charged. Battery devices should also be switched off.
• Distribution cable wiring should be reasonable and has the protective measures to avoid touching these cables while operating power equipment.
• when installing the battery system, must wear the protective items below:

3.1.1 Environmental requirements
Working temperature: -20 orc ~ +55 orc
Charging temperature range is 0 oC~+55 oC,
Discharging temperature range is -20 oC ~+55 oC
Storage temperature: -10 oC ~ +35 oC
Relative humidity: 5% ~ 85%RH Elevation: no more than 4000m
Operating environment: Indoor installation, sites avoid the sun and no wind, no conductive dust and corrosive gas. And the following conditions are met:

• Installation location should be away from the sea to avoid brine and high humidity environment.
• The ground is flat and level.
• There is no flammable explosive near to the installation places.
• The optimal ambient temperature is 15 oC ~ 30 oC
• Keep away from dust and messy zones

3.1.2 Tools and data
Hardware tool
Tools and meters that may be used are shown in table 3-1.
Table 3-1 Tool instrument

Name

Screwdriver (word, cross)| AVO meter
Wrench| Clamp meter
Inclined pliers| Insulating tape
Needle nose pliers| The thermometer
Clip forceps| Wrist strap
Wire stripper| AVO meter
Electric drill| Tape

3.1.3 Technical preparation
Electrical interface check
Devices that can be connected directly to the battery can be user equipment, power supplies, or other power supplies.

• Confirm whether the user’s PV power generation equipment, power supply or other power supply equipment has a DC output interface, and measure whether the DC power output voltage meets the voltage range requirements in Table 2-2.

• Confirm that the maximum discharge current capability of the DC power interface of the user’s photovoltaic power generation equipment, power supply or other power supply equipment should be greater than the maximum charging current of the products used in Table 2-2.
  If the maximum discharge capacity of the DC power interface of the user’s photovoltaic power generation equipment is less than the maximum charging current of the  products used in Table 2-2, the DC power interface of the user’s photovoltaic power generation equipment shall have a current limiting function to ensure the normal  operation of the user’s equipment.

• Verify that the maximum operating current of the battery-powered user equipment (inverter DC input) should be less than the maximum discharge current of the products used in Table 2-2.

The security check

• Firefighting equipment should be provided near the equipment, such as portable dry powder fire extinguisher.
• Automatic fire fighting system shall be provided for the case where necessary.
• No flammable, explosive and other dangerous articles are placed beside the battery.

3.1.4 Unpacking inspection

• When the equipment arrives at the installation site, loading and unloading should be carried out according to the rules and regulations, to prevent from being exposed
  to sun and rain.

• Before unpacking, the total number of packages shall be indicated according to the shipping list attached to each package, and the case shall be checked for good condition.

• In the process of unpacking, handle with care and protect the surface coating of the object.

• Open the package, the installation personnel should read the technical documents, verify the list, according to the configuration table and packing list, ensure objects are  complete and intact, if the internal packing is damaged, should be examined and recorded in detail.

Packing list as follows:

3.1.5 Engineering coordination
Attention should be paid to the following items before construction:

• Power line specification.
  The power line specification shall meet the requirements of maximum discharge current for each product.

• Mounting space and bearing capacity.
  Make sure that the battery has enough room to install, and that the battery rack and bracket have enough load capacity.

• Wiring.
  Make sure the power line and ground wire are reasonable. Not easy to short- circuit, water and corrosion.

3.2 Equipment installation
3.2.1 Installation steps
Table 3-2 Installation steps

Step| Installation preparation| Confirm that the ON/OFF switch on the front panel of unit is in the “OFF” state to ensure no live operation.
---|---|---
Step 2| Mechanical installation| 1.Battery placement position determination
2.Cable harness pre-installed
3.Battery module installation
Step3| Electrical installation| 1.Ground cable installation
2.Battery module parallel cable installation
3.Battery module total positive cable installation
4.Battery module total negative cable installation
5.Internal CAN communication interface connection
Step4| Battery system self-test| 1.Press the ON/OFF switch to the ON state
2.BMS system power-on activation
3.Check the system output voltage
4.Shut down the system
Step5| Connecting inverter| 1.Connect total positive & total negative cable of the battery system to the inverter
2.Connect the external CAN/RS485 communication cable to the inverter(Details as page 15 )

3.3 Installation connection diagram
3.3.1 Schematic diagram of parallel connection of 1-4 batteries, connect the positive power line of each battery with the positive power line, and the negative power line with  the negative power line, as follows:

4-15 batteries in parallel connection diagram
(The positive cable connected to the inverter is connected from the master battery, and the negative cable is connected from the last slave):

3.4 Installation Notes
A. Press the fixer on the wall with one hand, mark the hole for installing the fixer with a marker, and drill the hole with a tool, as shown in the following figure.

B. As shown in the figure, fix the four M8 expansion bolts in the attachment to the opening of the hanger, and tighten the nuts on the bolts.

C. As shown in the figure, hang the battery by wall position mounting hook , please note one to one correspondence between hooks and hook holes.

Communicate inverter

4.1 Method 1:Communicate factory default inverters
Step 1:Select the cables used by the inverter by the label on the communication cables. Insert the RJ45 connector of the battery end(CAN/RS485) and the inverter  end(CAN/RS485) into the interfaces on both sides.
Step 2:Turn on the battery and inverter and wait until they are working properly. The battery is configured by factory default to communicate with the Veltroni (RS485)  inverter and DEYE, Sensing, Lux power, Mangareva Shofar, TBB(CAN)inverters, the battery will automatically select and communicate with one of these inverters. Step  3:After successful communication between battery and inverter, battery status will be displayed on inverter: voltage, current, SOC, temperature, etc.

4.2 Method 2:Communicate optional inverters(protocol select)
When communicating with other brands of inverters, such as: Growatt, Solax, Goodwe, Sorotech, LTW, MUST, SMA,etc.
Step 1:Turn on the battery, ensure BMS is normally powered on and not in sleep state, the RS232 crystal head of the communication cable is inserted into the battery  communication port, the USB end is inserted into the computer; Step 2:Unzip the package of BMS monitoring software to the current computer(Windows Microsoft .NET  Framework 2.0 or above). This software does not need to be installed independently, only the environment is satisfied, double-click the main program icon(BMS exe file) to  run and use. Enter the password:vking（space is green, the password is correct). Step 3: Click “Parameter ”at the top of system page, click “Read All” button to read battery parameter. Select the inverter protocol at “Protocol type” eg: Daron is Voltron protocol. Click the “Write all” button to set the protocol, after the system displays the  operation succeeds, protocol selection is complete(Please refer to the following pictures).

Step 4:Select the cables used by the inverter by the label on the communication cables. Insert the RJ45 connector of the battery end(CAN/RS485) and the inverter  end(CAN/RS485) into the interfaces on both sides. Restart the battery and inverter. The battery will automatically communicate with the inverter corresponding to the  selected protocol.
4.3 Remark of inverter protocol code

RS485 Protocol

Protocol Code| Inverter brand| Compatible(Same protocol)
Darfon| Voltronic Power| MOTOMA/Opti_Solar/Victron
SMNK| SMK| Growatt
SOLAX| SOLAX Power|
LTW| Lt-power|
SRNE| SRNE Solar| PACE/Epee
PV3500| MUST Solar|
| |
| |
CAN Protocol

Protocol Code| Inverter brand| Compatible(Same protocol)
GOODWE| GOODWE| SOLARFAM
PYLONTECH| PYLONTECH| DEYE/Sunsynk/LUXPower/T88/SOFAR
SOROTEC| SORO Power| Victron/SMA
SOLAX| SOLAX Power|
PV1800F| MUST Solar|
LTW| Lt-power|
Growatt| Growatt|
Schneider| Schneider Electric|

Grenex Pty Ltd.
Address: 0101 INTERSITE BUILDING, 420
FESTIVAL STREET, Hatfield, Gauteng, South
Africa
Email: sula@genex.co.za
Website: www.genex.co.za

References

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