User Manual for Dyness models including: BX51100, 5.12kWh Lithium Batteries, BX51100 5.12kWh Lithium Batteries, Lithium Batteries, Batteries
BX51100 Unit User Manual. BX51100 lithium iron phosphate battery energy storage ... This user manual details the basic structure, parameters, basic procedures and methods...
28 ott 2021 — product manual, relevant contract or relevant laws and regulations. ... (2) When the battery works with GOODWE、Solis、LUX、Sofar、DEYE、VICTRON、.
Oct 28, 2021 — ○Please do not put the battery into water or fire, in case of explosion or any other situation that might endanger your life.
File Info : application/pdf, 26 Pages, 1.20MB
DocumentDocumentBX51100 User Manual BX51100 User Manual Contents Statement of Law.......................................................................................................... 2 Safety Precautions.........................................................................................................3 Preface........................................................................................................................... 4 1 Introduction............................................................................................................... 4 1.1 Brief Introduction........................................................................................................... 4 1.2 Product Properties..........................................................................................................4 1.3 Product identity definition.............................................................................................5 2 Product Specification.................................................................................................5 2.1 Size and Weight.............................................................................................................. 5 2.2 Performance Parameter................................................................................................. 5 2.3 Interface Definition........................................................................................................ 5 2.3.1 DIP switch definition and description..................................................................................... 6 2.4 Battery Management System(BMS).............................................................................. 9 2.4.1 Voltage Protection..................................................................................................................9 2.4.2 Current Protection................................................................................................................. 9 2.4.3 Temperature Protection...................................................................................................... 10 2.4.4 Other Protection.................................................................................................................. 10 3 Installation and Configuration................................................................................11 3.1 Preparation for installation..........................................................................................11 3.1.1 Environmental requirements............................................................................................... 11 3.1.2 Tools and data...................................................................................................................... 11 3.1.3 Technical preparation.......................................................................................................... 12 3.1.4 Unpacking inspection........................................................................................................... 12 3.1.5 Engineering coordination.....................................................................................................14 3.2 Equipment installation................................................................................................. 14 3.2.1 Installation preparation........................................................................................................ 15 3.2.2 Mechanical installation......................................................................................................... 15 3.2.3 Electrical installation............................................................................................................ 17 3.2.4 Battery parameter settings on the inverter.........................................................................20 3.2.5 Register on the website after installation............................................................................20 4 Use, maintenance and troubleshooting................................................................. 21 4.1 Battery system usage and operation instructions...................................................... 21 4.2 Alarm description and processing............................................................................... 21 4.3 Analysis and treatment of common faults.................................................................. 22 I Statement of Law BX51100 Unit User Manual Copyright of this document belongs to Daqin New Energy Tech (Taizhou) Co., Ltd. No part of this documentation maybe excerpted, reproduced, translated,annotated or duplicated in any form or by any means without the prior written permission of Daqin New Energy Tech (Taizhou) Co., 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 Daqin New Energy Tech (Taizhou) Co., Ltd when the product or technology is updated. Web URLhttp://www.dyness-tech.com.cn Please note that the product can be modified without prior notice. Revision History Revision NO. Revision Date 1.0 2021.01.10 Revision Reason First Published 2 Safety Precautions BX51100 Unit User Manual 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 on the same device. Please avoid any form of damage to battery, especially stab, hit, trample or strike. 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 explosion. For your safety, please do not arbitrarily dismantle any component in any circumstances. The maintenance must be implemented by authorized technical personnel or our company's technical support. Device breakdown due to unauthorized operation will not be covered under warranty. Caution Our products have been strictly inspected before shipment. Please contact us if you find any abnormal phenomena such as device outer case bulging. The product shall be grounded properly before use in order to ensure your safety. To assure the proper use please make sure parameters among the relevant device are compatible and matched. Please do not mixed-use batteries from different manufacturers, different types and models, as well as old and new together. Ambient and storage method could impact the product life span, please comply with the operation environment instruction to ensure 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 fully discharged or over-discharging protection mode is activated. Formula of theoretical standby time: T=C/I (T is standby time, C is battery capacity, I is total current of all loads). 3 Preface Manual declaration BX51100 Unit User Manual BX51100 lithium iron phosphate battery energy storage system can be combined in series or parallel to provide energy storage function for photovoltaic power generation users. Our product can store extra electricity into battery from photovoltaic power generation system in daytime and supply stable power to user's equipment as power backup at nighttime or any time when needed. It can improve the efficiency of photovoltaic power generation and increase the electric power efficiency by peak load shifting. This user manual details the basic structure, parameters, basic procedures and methods of installation and operation and maintenance of the equipment. 4 BX51100 Unit User Manual 1 Introduction 1.1 Brief Introduction BX51100 lithium iron phosphate battery system is a standard battery system unit, customers can choose a certain number of BX51100 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 energy storage applications with high operating temperatures, limited installation space, long power backup time and long service life. 1.2 Product Properties BX51100 energy storage product's positive electrode 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. Intelligent design configures integrated inspection module. 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 ~ +55, circulation span and discharging performance are well under high temperature. Less volume, lighter weight. 4 1.3 Product identity definition BX51100 Unit User Manual Battery voltage is higher than safe voltage, direct contact with electric shock hazard. inflammable. 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. Do not place near open flame or incinerate. If catch fire, do not put out with water. If catch fire, do not put out with dry powder fire extinguisher. Do not cut or spear with sharp objects. 5 2 Product Specification BX51100 Unit User Manual 2.1 Size and Weight Table 2-1 BX51100 Device size Product Nominal Voltage BX51100 DC51.2V Nominal Capacity 100Ah Dimension 558×545×150mm Weight 50kg 2.2 Performance Parameter Table 2-2 BX51100 performance parameter Item Parameter value Nominal Voltage(V) 51.2 Work Voltage Range(V) 44.8~57.6 Nominal Capacity(Ah) 100 Nominal Energy(kWh) 5.12 Recommended Charge/Discharge Current (A) 50 Max. Power Charge/Discharge Current (A) 80 Peak Power Charge/Discharge Current (A) 100 (15S) Charge Voltage (Vdc) 57 2.3 Interface Definition This section elaborates the interface functions of the front interface of the device. 1 2 3 4 5 67 8 9 10 Figure2-1 The sketch of interface. 11 12 5 Table 2-3 Interface Definition BX51100 Unit User Manual Item Name Definition 1 Power switch OFF/ON, must be in the "ON" state when in use 2 Positive socket Battery output positive or parallel positive line 3 ADD DIP switch SW (battery When the "OFF/ON" switch button is in the ON state, press 4 wake/sleep and hold this button for 3 seconds to put the battery into the switch) power-on or off state. 5 SOC The number of green lights shows the remaining power. Table 2-3 for details. Red light flashing when an alarm occurs, red light always on 6 ALM during protection status. After the condition of trigger protection is relieved, it can be automatically closed. 7 RUN Green light flashing during standby and charging mode. Green light always on when discharging. 8 COM Communication cascade port, support RS232 9 CAN/485 Communication cascade port, support CAN/ RS485 communication (factory default CAN communication) 10 DRY CONTACT / 11 Negative socket Battery output negative or parallel negative line 12 Grounding Shell ground connection 2.3.1 DIP switch definition and description Table 2-4 Interface Definition DIP switch position (master communication protocol and baud rate selection) #1 #2 #3 #4 Define different protocols Distinguish between master and slave Baud rate selection OFFCAN: 500K,485: 9600 ONCAN: 250K,485: 115200 DIP switch description: When the batteries are connected in parallel, the host communicates with the slaves 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: 6 BX51100 Unit User Manual 1. If the master is the latest BX51100 battery with DIP switch: (1) The communication cable from the master CAN IN to the inverter comm port should be the correct one. (2) When the battery works with GOODWESolisLUXSofarDEYEVICTRON IMEONInfinisolarSungrowSMARENACDELIOSSAJ(CAN Comm) ,before starting the battery,you need put the master DIP switch "# 3" to the "ON" position (to the top), then turn on the batteries. Master Setting 1 (3) If the battery communicates with the Axpert-king,Axpert-VMIII,Growatt SPH/SPA(CAN comm)GMDESaj(485 comm), turn the master DIP switch "#2" to "ON" position. Master Setting 2 (4) If the battery communicates with the Growatt SPF HVM-P/ES/WPV by RS485 communication, turn the master DIP switch "#2" and "#3" to "ON". Master Setting 3 (5) If the battery communicates with the Schneider Conext Series, turn the master DIP switch "#1" and "#3" to "ON". Master Setting 4 (6) When you setup the master DIP as setting 1~4,all the slaves keep the DIP 0000,no need change. (7) If the energy storage system has only one BX51100, it is the master itself, and still follow the above steps. Note: For more information of matching inverter brands, please subject to the latest document <The list of compatibility between Dyness ESS and Inverters >. Front Plug Socket of communication port CAN/485 Figure 2-2 CAN/485 interface definition 7 Table 2-5 Pin Definition Foot position PIN1 PIN2 PIN3 PIN4 PIN5 PIN6 PIN7 PIN8 PIN9 PIN10 PIN11 PIN12 PIN13 PIN14 PIN15 PIN16 Color Orange/white Orange Green/white Blue Blue/white Green Brown/white Brown Orange/white Orange Green/white Blue Blue/white Green Brown/white Brown BX51100 Unit User Manual Definition 485B 485A XGND CANH CANL Reserve XIN Reserve Reserve Reserve XGND CANH CANL Reserve XOUT Reserve Foot position PIN1 PIN2 PIN3 PIN4 PIN5 PIN6 Definition Reserve GND TXD RXD GND Reserve Figure 2-3 COM interface definition Tips: Please pay attention of the communication com definition of inverter, in order to avoid voltage in the port to affect communication. 8 Table 2-6 LED status indicators BX51100 Unit User Manual Battery Status Shutdown Standby SOC / 80%SOC100% 60%SOC80% 40%SOC60% 20%SOC40% 0%SOC20% SOC=0 SOC=100% LED1 off off LED2 off off off LED3 off off off off LED4 off off off off off LED5 ALM RUN off off off off Flashing off off Flashing off off Flashing off off Flashing off Flashing Flashing off Flashing / Flashing off Flashing 80%SOC100% Flashing off Flashing 60%SOC80% Charging 40%SOC60% Flashing off Flashing off off off Flashing off Flashing 20%SOC40% Flashing off off off off Flashing 0%SOC20% Flashing off off off off off Flashing 80%SOC100% off 60%SOC80% off off 40%SOC60% off off off Discharging 20%SOC40% off off off off 0%SOC20% off off off off Flashing SOC=0 off off off off off Flashing / Flashing/ A special ALM light flashing state: when the communication between batteries is lost or abnormal,all the lights from SOC to RUN of the master battery will flash together. means green light always on means red light always on Flashing: means green light flashing or red light flashing 2.4 Battery Management System(BMS) 2.4.1 Voltage Protection Low Voltage Protection in Discharging When any battery cell voltage or total voltage is lower than the rated protection value during discharging, the over-discharging protection is activated, and the battery buzzer makes an alarm sound. Then battery system stops supplying power to the outside. When the voltage of each cell back to rated return range, the protection is over. Over Voltage Protection in Charging Battery will stops charging when total voltage or any battery cell voltage reaches the rated protection value during charging stage. When total voltage or all cell back to rated range, the protection is over. 2.4.2 Current Protection Over Current Protection in Charging 9 BX51100 Unit User Manual When the charge current 90A, current limit protection mode is activated, current will be limited to 3Aprotection is removed after rated time delaying 10S. Circulate like this until the current is lower than 90A. Over Current Protection in Discharging When the discharge current is higher than 100A, the battery buzzer alarms and the system stops discharging after 15s. After protection, the discharging will restore in 60s delay or immediately when there is charging current. Caution: 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 Low/Over temperature protection in charging When battery's temperature is beyond range of -5 ~+55 during charging, temperature protection is activated, device stops charging. The protection is over when temperature back to rated working range. Low/Over temperature protection in discharging When battery's temperature is beyond range of -20 ~+55 during discharging, temperature protection is activated, device stops supplying power to the outside. The protection is over when temperature back to rated working range. 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 60 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. 10 BX51100 Unit User Manual 3 Installation and Configuration 3.1 Preparation 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 51.2V 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: The isolation gloves Safety goggles Safety shoes Figure3-1 3.1.1 Environmental requirements Working temperature: -20 ~ +55 Charging temperature range is 0oC~+55, Discharging temperature range is -20 ~+55 Storage temperature: -10~ +35 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 for product arrangement shall be flat and level. No flammable explosive materials near the installation site. The optimal ambient temperature is 15~ 30 Keep away from dust and messy zones 3.1.2 Tools and data Tools and meters that may be used are shown in table 3-1. Table 3-1 Tool instrument ScrewdriverSlottedPhillips Torque wrench Diagonal pliers Pointed nose pliers Pliers to hold the wire Stripping pliers Electric drill Name Multimeter Clamp current meter Insulation tape Temperature meter Anti-static bracelet Cable tie Tape measure 11 3.1.3 Technical preparation BX51100 Unit User Manual 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 higher 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 product, 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 materials 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. 12 Packing list is as follows: Item Specification Quantity Battery-BX51100 51.2V/100Ah 1 Parallel cablepositive Red /25mm2/L250mm 1 Parallel cablenegative Black /25mm2/L250mm 1 Communication parallel cable Black /L500mm/Double RJ45 plug 1 Communication cable-to inverter Black /L2000mm /Double RJ45 plug 1 Ground wire L500mm,4mm² 1 User Manual User manual 1 Screw screws M6 8 Expansion screw Expansion screw 8 cardboard Positioning cardboard 1 BX51100 Unit User Manual Figure 13 Battery bracket Battery bracket 1 BX51100 Unit User Manual Fixing bracket Fixing bracket 1 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 brackets 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 Table 3-2 Installation steps Step1 Step 2 Installation preparation Mechanical installation Step3 Electrical installation Step4 Battery system self-test Step5 Connecting inverter Confirm that the ON/OFF switch on the front panel of BX51100 unit is in the "OFF" state to ensure no live operation. 1. Battery placement position determination 2. Battery module installation 1. Ground cable installation 2. Battery module parallel cable installation 3. Parallel communication cable connection 1. Turn the ON/OFF switch to the "ON" state 2. Press SW button 3S to wake up battery 3. Check the system output voltage and led status 4. Shut down the system 1. Connect total positive & total negative cable of the battery system to the inverter 2. Battery module total positive cable installation 3. Battery module total negative cable installation 4. Connect the communication cable from the master CAN IN to the inverter 5.Turn on the Power switch and wake up system by SW button 6.Close the DC breaker between inverter and battery 7.Turn on the inverter and check the communication between inverter and battery system 14 3.2.1 Installation preparation BX51100 Unit User Manual 1. Prepare equipment and tools for installation. 2. Check the BX51100 unit and confirm that the ON/OFF switch is in the "OFF" state to ensure the device is shut off. 3.2.2 Mechanical installation (1) Brackets Installation: 1. BX51100 brackets The BX51100 bracket is shown before installation as shown in figure3-2. Figure3-2 2. Place the BX51100 and brackets as shown in the figure3-3, and insert the BX51100 into the brackets. Each bracket is connected to the module by four screws, two screws on one side. Twisting force keeps 9.8N·m. As shown in figure3-3. Figure3-3 3. Install another pair of brackets on the first one, fixed by screws between them. Twisting force keeps 9.8N·m. Two screws are required for each bracket as shown in figure3-4. Figure3-4 15 4. Insert the second BX51100 into the brackets. BX51100 Unit User Manual 5. Stack the required number of battery and bracket combinations as described above, and fix the screws. Shown as Figure3-6. Figure3-5 (2) Wall hanging Installation method: 1. Use the positioning cardboard (provided in accessory package) and mark the screw hole positions on the wall, as shown on the right. 2. The cardboard must be perpendicular to the ground while drawing the holes. 3. The bottom of the cardboard is about 300mm from the ground. 4. According to the position of the mark, 8 holes in diameter 10mm and depth of more than 70mm are hit on the wall with an electric drill, which are used for fitting expansion bolt M6. Figure3-6 Figure3-7 16 5. Fixing the expansion bolt M6 into the bottom of the hole on the wall, and fix the Support bracket and Battery bottom bracket on the wall with M6 bolts. Twisting force keeps 9.8N·m. BX51100 Unit User Manual 6. Carry or hoist the battery box to the installed Battery bottom bracket. Fixing the Support bracket and the upper part of the battery box with M6 bolts, twisting force keeps 9.8N·m.Then fixing the Battery bottom bracket and the bottom part of the battery box with M6 bolts. Twisting force keeps 9.8N·m. Figure3-8 Figure3-9 3.2.3 Electrical installation Before connecting the power cables, use multimeter to measure cable continuity, short circuit, confirm positive and negative, and accurately mark the cable labels. Measuring methods Power cable check: select the buzzer mode of multimeter and detect the both ends of the same color cable. If the buzzer calls, it means the cable is in good condition. Short circuit judgment: choose multimeter resistor file, probe the same end of positive and negative pole, if the resistor shows infinity, means that the cable is available. After visual testing of power line connection, the positive and negative poles of the battery shall be connected respectively to the positive and negative poles of the opposite terminal. It is better to add a circuit breaker between the inverter and the battery system. The selection of the circuit breaker requires: Voltage: U>60V Inverter power Current: I = 45V The circuit breaker is installed between the battery module and the inverter, as shown in Figure 3-10: 17 BX51100 Unit User Manual 18 Circuit breaker Power cablepositive Parallel cablepositive BX51100 Unit User Manual Inverter Communication cable-to inverter Power cablenegative Parallel cablenegative Communication parallel cable Master Setting 1 Master Setting 2 Master Setting 3 Master Setting 4 Slave Setting 1 Figure3-10 Note: 1. For more ADD SettingsReference 2.3.1 "DIP switch definition and description" 2. After the whole system connection, set the master DIP mode according to the inverter model firstly, then start the battery. 3. The BAT-INV comms cable is from inverter comm port to master CAN IN port, BAT-BAT cable is from master CAN OUT to slave1 CAN IN, slave1 CAN OUT to slave2 CAN IN... 4. Each pair of power cable, it's limited continuous current is 200A, so if the inverter Max. work current more than 200A, please add power cable according to the proportion. 19 3.2.4 Battery parameter settings on the inverter Max Charging(Bulk) Voltage: 57V Absorption Voltage: 56.5V Float Voltage: 56V Shut Down(cut off) Voltage: 50V Shut Down(cut off) SOC: 20% Restart Voltage: 52V Max Charge Current: 50A*battery QTY Max Discharge Current: 50A*battery QTY 3.2.5 Register on the website after installation BX51100 Unit User Manual After the battery system installation is completed and the running is normal, you need to log in to the DYNESS official website to register the product installation and use information to make the product warranty effective. Please follow the instructions on the website to register. http://www.dyness-tech.com.cn Service Sign Up 20 BX51100 Unit User Manual 4 Use, maintenance and troubleshooting 4.1 Battery system usage and operation instructions After completing the electrical installation, follow these steps to start the battery system. 1. Refer to the description of the DIP switch of 2.3.1 to prepare the battery module before starting up, then press the ON/OFF button to the ON position, press and hold the SW button for 3 seconds. 2. After the indicator self-test, the RUN indicator will light and the SOC indicator will be on (100% SOC status in the Figure4-1). DIP ON SW SOC ALM RUN COM CAN/485 IN OUT DRY CONTACT Figure4-1 Caution: 1. After pressing the power button, if the battery status indicator on the front panel continues to be red, please refer to the "4.2 Alarm description and processing ". If the failure cannot be eliminated, please contact the dealer timely. 2. Use a voltmeter to measure whether the voltage of the circuit breaker battery access terminal is higher than44.8V, and check whether the voltage polarity is consistent with the inverter input polarity. If the circuit breaker battery input terminal has a voltage output and is greater than 44.8V, then the battery begun to work normally. 3. After confirming that the battery output voltage and polarity are correct, turn on the inverter, close the circuit breaker. 4. Check if the indicator of the inverter and battery connection (communication indicator and battery access status indicator) is normal. If it is normal, successfully complete the connection between the battery and the inverter. If the indicator light is abnormal, please refer to the inverter manual for the cause or contact the dealer. 4.2 Alarm description and processing When protection mode is activated or system failure occurred, the alarm signal will be given through the working status indicator on the front panel of the BX51100. The network management can query the specific alarm categories. 21 BX51100 Unit User Manual If the fault such as single cell over voltage, charging over-current, under-voltage protection, high-temp protection and other abnormalities which affects the output, please deal with it according to Table 4-1. Table 4-1 Main alarm and Protection Statue Charge state Alarm category Over-current High temp Alarm indication RED Buzzer start RED Processing Stop charging and find out the cause of the trouble Stop charging Over-current Discharge state High temp Total voltage undervoltage Cell voltage undervoltage RED Buzzer start RED RED Buzzer start RED Buzzer start Stop discharging and find out the cause of the trouble Stop discharging and find out the cause of the trouble Start charging Start charging 4.3 Analysis and treatment of common faults Analysis and treatment of common faults in the Table 4-2: Table 4-2 Analysis and treatment of common faults No. Fault phenomenon Reason analysis Solution The indicator does 1 not respond after the Total voltage lower than 37.3V Check the total voltage power on Battery data status is abnormal. Read the battery 2 No DC output Battery gets into over-discharged information on the protection monitor. 3 The DC power supply time is too short Battery capacity become smaller Storage battery replacement or add more modules 4 The battery can't be fully charged to 100% Charging voltage is too low Adjust charging voltage at 57V or 57.6V The power cable Turn off the battery, check 5 sparks once power on Power connection short-circuit the cause of the short and ALM light RED circuit The DIP setting of the host is wrong/ the battery type of the inverter is wrong/ Communication cable used 6 Communication fault incorrectly/The communication cable is incorrectly connected at the battery communication port Check these possible causes one by one or the inverter communication port/The battery firmware version is too low to support the inverter If you need any technical help or have any question, please contact the dealer in time. 22 DAQIN NEW ENERGY TECH (TAIZHOU) Co.,LTD Address: Building 13, Jiangyan Industrial Park, Sanshui Street, Jiangyan District, Taizhou City, Jiangsu Province225500 Email: sales@dyness-tech.com Website: www.dyness-tech.com.cn