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Summary of Contents for SUNFLX SEI -4K-SP
- Page 1 USER MANUAL Solar Hybrid Inverter SEI -4K-SP ｜ SEI-4.6K-SP ｜ SEI-5K-SP SEI-5.5K-SP ｜ SEI-6K-SP V2.1...
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Page 2: Table Of Contents
Contents 1. Safety .............................. 4 1.1、 How to use this manual ..........................4 1.2、Symbols in this manual ..........................4 1.3、Safety instructions ............................4 2. Production Instructions ....................... 5 2.1、Instructions ................................. 5 2.2、Features ................................5 2.3、System connection diagram ........................6 2.4、Production Overview ............................7 2.5、Dimension drawing ............................8 3. - Page 3 6.1、Dry contact ............................... 41 6.2、RS485/CAN communication port ......................42 6.3、 DIP switch ................................ 42 6.4、WIFI port ................................42 6.5、USB-A port ............................... 43 6.6、USB-B port ................................43 6.7、Parallel port ..............................43 6.8 、External CT port .............................44 7. Fault and Remedy ........................45 7.1、Fault code ................................. 45 7.2、Troubleshooting .............................48 8.
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Page 4: Safety
1. Safety 1.1、How to use this manual This manual contains important information、guidelines、operation and maintenance for the • following products：SEI 4-6KW SP series • The manual must be followed during installation and maintenance. 1.2、Symbols in this manual Symbol Description DANGER indicates a hazardous situations which if not avoided will result in △... -
Page 5: Production Instructions
2. Production Instructions 2.1、Instructions SEI SP series is a new type of solar energy storage inverter control inverter integrating solar energy storage & utility charging and energy storage, AC sine wave output. It adopts DSP control and features high response speed, reliability, and industrial standard through an advanced control algorithm. -
Page 6: System Connection Diagram
2.3、System connection diagram The diagram below shows the system application scenario of this product. A complete system consists of the following components: • PV modules: converts light energy into DC energy, which can be used to charge the battery via an inverter or directly inverted into AC power to supply the load. -
Page 7: Production Overview
2.4、Production Overview LED Indicators Generator terminals LCD screen Grid terminals keys USB-B port PV1/PV2 terminals RS485/CAN port Battery terminal WIFI port Parallel communication A USB-A port port Parallel communication B DIP switch port LOAD terminals Dry contact... -
Page 8: Dimension Drawing
2.5、Dimension drawing... -
Page 9: Installation
3. Installation 3.1、Select the mount location SEI SP series can be used outdoors (protection class IP65). Please consider the followings before selecting the location： • Choose the solid wall to install the inverter. • Mount the inverter at eye level. •... -
Page 10: Mount The Inverter
3.2、Mount the inverter Punch 4 mounting holes in the wall with an electric drill according to the specified size, and insert 4 M8*60 expansion screws above. 3.3、Remove the terminal cover & wiring Using a screwdriver, remove the terminal protection cover and anti-insect net. Terminal cover... -
Page 11: Connection
4. Connection 4.1、Single-phase output AC output Items Description Applicable Model SEI SP series S model Output Voltage Range (L-N) 200～240Vac, 230Vac default ○ NOTICE • Users can change the output phase mode and output voltage by setup menu. Please read the chapter 5.2 Setting. -
Page 12: Cable & Circuit Breaker Requirement
4.2、Cable & circuit breaker requirement PV INPUT • Model Cable Diameter Max. PV Input Current Circuit Breaker Spec SEI-4K-SP /10AWG 16A/16A 2P—25A SEI-4.6K-SP /10AWG 16A/16A 2P—25A SEI-5K-SP /10AWG 16A/16A 2P—25A SEI-5.5K-SP /10AWG 16A/16A 2P—25A SEI-6K-SP /10AWG 16A/16A 2P—25A Grid • Model Cable diameter Max Input Current... - Page 13 Battery • Max. Battery Max.battery charge Model Cable Diameter Circuit Breaker Spec discharge Current current HESP4840S100-H 2P-160A 30mm /2AWG 100A 100A HESP4846S100-H 2P-160A 30mm /2AWG 118A 100A HESP4850S100-H 2P-200A 30mm /2AWG 125A 100A HESP4855S100-H 2P-200A 30mm /2AWG 130A 100A HESP4860S100-H 2P-200A 30mm /2AWG...
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Page 14: Grid & Load & Gen Connection
4.3、GRID & LOAD & GEN connection Connect the live,neutral and ground wires according to the cables’ position and order shown in the diagram below. DANGER △ Before connecting AC inputs and outputs, the circuit breaker must be opened to avoid •... -
Page 15: Pv Connection
DANGER △ • Before connecting battery, the circuit breaker must be opened to avoid the risk of electric shock and must not be operated with electricity. • Make sure that the positive and negative terminals of the battery are connected correctly and not reversed, otherwise the inverter may be damaged. -
Page 16: Grounding Connection
4.7、Grounding connection Please make sure the grounding terminal connect to the Grounding Bar. • The grounding cable should have a diameter of not less than 4 mm² and be as close as possible to the grounding point. 4.8、Final assembly After ensuring that the wiring is reliable and the wire sequence is correct, install the terminal protection cover in place. -
Page 17: Inverter Parallel
4.9、 Inverter Parallel 4.9.1 Introduction 1. Up to six units connected in parallel. 2. When using the parallel operation function, the following connecting lines (package accessories) shall be firmly and reliably connected: 3. Dip switches 3 and 4 of any two machines must be put down when inverters are in parallel Dip switchs Parallel communication line*1: 4.9.2 Precautions for connecting the parallel connecting lines... -
Page 18: Schematic Diagram Of Parallel Connection In Single Phase
wiring, please refer to Wiring Diagram. Parallel connection in three-phase: ensure N-to-N and PE-to-PE connection for all solar storage inverters. The L lines of all inverters connected to the same phase need to be connected together. But L lines of different phases cannot be joined together. - Page 19 b） Three units connected in parallel: c） Four units connected in parallel:...
- Page 20 d） Five units connected in parallel: e） Six units connected in parallel:...
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Page 21: Schematic Diagram Of Parallel Connection In Three Phase
4.9.4 Schematic diagram of parallel connection in three phase The parallel communication line and current sharing detection line of the solar storage inverter need to be locked with screws after connecting. In case of parallel operation with multiple inverters, the schematic diagram of parallel connection is as follows: Parallel Operation in three phase : a）... - Page 22 b） Four units connected in three phase: 2+1+1 system: c） Five units connected in three phase: 3+1+1 system: 2+2+1 system:...
- Page 23 d） Six units connected in three phase: 2+2+2 system: 3+2+1 system:...
- Page 24 4+1+1 system: Note: 1) Before starting up and running, please check whether the connection was correct to avoid any abnormalities in the system. 2) All wiring must be fixed and reliable to avoid wire drop during use. 3) When the AC output is wired to the load, it shall be properly wired according to the requirements of the electrical load equipment to avoid damage to the load equipment.
- Page 25 5) Machine factory default for single machine mode, if you use parallel or three-phase function, you need to set the”Parallel mode “ item parameters through the screen. The setting method is: power on one machine at a time, the rest of the machine off, and then set the ”Parallel mode “ item parameters according to the site system operation mode.
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Page 26: Operation
5. Operation 5.1、Operation and display panel The operation and display panel below includes 1 LCD screen, 3 indicators, 4 touchable keys. Keys • Keys Description To enter/exit the setting menu To next selection To last selection To confirm/enter the selection in setting menu LED Indicators •... - Page 27 Display panel • Icon Description Description Icon Solar panel Load Battery Grid or Generator Inverter is Home page Working History data Setting Local time The buzzer is slient BMS communicate status The enery direction...
- Page 28 • View real-time data • On the LCD home screen, click the inverter icon, battery icon, mains icon, load icon and photovoltaic icon to view the real-time data of the machine. System data Item Item MPPT temperature ℃ Device information Inverter temperature ℃...
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Page 29: Setting
5.2、Setting Operating Instructions：tap settings in the menu bar at the bottom of the screen to enter the settings interface, including Basic setup, Work mode setup, Battery setup On grid setup and Advance setup. Parameter settings: Parameter Meaning Options Description Basic setup System date This item shows the inverter date, click on it to set the date System time... - Page 30 PV priority: switch to utility power when PV is invalid or when Solar first the battery is below the parameter”Turn To Inverter Volt” or ”Switching to utility SOC”. setting. Solar and utility charging the battery at the same time, solar at the first priority, utility power as a supplement when solar Hybrid default power is not sufficient.
- Page 31 2nd slot end charging 00:00:00 Setting range: 00:00:00-23:59:00 3rd slot start charging 00:00:00 Setting range: 00:00:00-23:59:00 3rd slot end charging 00:00:00 Setting range: 00:00:00-23:59:00 Disable default Disable this function After the time-slot discharge function is enabled, the power Timed start discharging supply mode will change to AC 1ST and the system will switch enable Enable...
- Page 32 Inverter stops charging when the battery is full. Inverter Batt. Recharging voltage 52V default resumes charging when the battery voltage below this value. Setting range: 44V~54V. Max. chg. curr. by Grid 60A default Current setting range:0~60A. Disable default Disable the battery temp compensation Batt Chg Temp Compensation Enable...
- Page 33 When output source priority is Solar first or battery Turn To Mains Volt 43.6V default first,output source will switch to utility from battery when the battery voltage below the preset value. Setting range:40~60V When output source priority is Solar first or battery first, Turn To Inverter Volt 56.8V default...
- Page 34 It is used to adjust the inverter reactive power Disable default according to the set grid voltage. Grid power function V- This function is used to adjust inverter output power Q curve (active power and reactive power) when grid voltage Enable changes.
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Page 35: Output Priority
5.3、Output priority • AC First Output Utility at first priority, utility and solar provide power to load at the same time when solar is available, battery will provide power to load only when utility power is not available.(Priority: utility>solar>battery) • Solar and Grid Hybrid Output In UTI mode, when not connected to the battery or when the battery is full, the solar and the utility supply power to the load at the same time.(Priority: solar>utility>battery) •... -
Page 36: Battery Charging Mode
5.4、Battery charging mode The charging mode corresponds to the parameter Battery Charging Mode, allowing the user to set the charging mode manually. • Hybrid Charging PV and mains charge the battery at the same time, with PV taking priority and mains acting as a supplement when PV is insufficient. -
Page 37: Time-Slot Charging/Discharging Function
5.5、Time-slot charging/discharging function The SEI SP series is equipped with a time-slot charging and discharging function, which allows users to set different charging and discharging periods according to the local peak and valley tariffs, so that the utility power and PV energy can be used rationally. When mains electricity is expensive, the battery inverter is used to carry the load;... -
Page 38: Battery Parameter
5.6、Battery parameter Lead-acid battery • Battery type Sealed lead Gel lead Flooded lead User-defined acid battery acid battery acid battery Adjustable (USE) Parameters (SLD) (GEL) (FLD) Overvoltage disconnection voltage Battery fully charged √ recovery point Boost charge voltage 57.6V 56.8V 57.6V 40～60V √... - Page 39 Li-ion batter • Battery type Ternary Ternary LFP (L16) Adjustable (N13) (N14) (L15) (L14) Parameters Overvoltage disconnection voltage Battery fully charged 50.4V 54.8V 53.6V 50.4V 47.6V √ recovery point Equalizing charge √ voltage Boost charge voltage 53.2V 57.6V 56.8V 53.2V 49.2V √...
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Page 40: Communication
6. Communication 6.1、Dry contact RSD power supply Temperature sampling (reserved) 3. Generator remote start/stop 4.CT connection 功能 描述 RSD power supply PIN 1 is GND，PIN 5 is RSD 12V+ Temperature sampling Pin 1 & Pin 4 can be used for battery temperature sampling compensation. （reserved）... -
Page 41: Rs485/Can Communication Port
6.2、RS485/CAN communication port 1.RS485/CAN communication port for RS485 and CAN RJ45 定义 communication with lithium battery BMS; Pin 1 RS485-B Pin 2 RS485-A Pin 3 Pin 4 CANH Pin 5 CANL Pin 6 Pin 7 RS485-A Pin 8 RS485-B 6.3、 DIP switch When RS485 port PIN1 and PIN2 are used for BMS 485 communication, put down DIP 1,2, When RS485 port PIN7 and PIN8 are used for BMS 485 communication, up DIP 1,2 When using a single machine, put down DIP 3,4... -
Page 42: Usb-A Port
6.5、USB-A port It is used to updated the screen firmware 6.6、USB-B port This port is a USB communication port, which can be used for USB communication with the selected upper computer software of our company (Need to apply for). To use this port, the corresponding “USB to serial port chip CH340T driver” should be installed in the computer. -
Page 43: External Ct Port
6.8 、External CT port 1. Split Core Current Transformer (CT) dimension: (mm) 2. Secondary output cable length is 4m. 3.The CT direction is “to inverter”... -
Page 44: Fault And Remedy
7. Fault and Remedy 7.1、Fault code Whether it affects the Fault code Fault name Description output or 【01】 BatVoltLow Battery undervoltage alarm. Battery discharge average current 【02】 BatOverCurrSw overcurrent (software protection). 【03】 BatOpen Battery not-connected alarm. Battery undervoltage stop discharge 【04】... - Page 45 【22】 EEPROM Memory failure. 【23】 ModelNumErr Model setting error. Inverted AC Output Backfills to Bypass AC 【26】 RlyShort Input. 【29】 BusVoltLow Internal battery boost circuit failure. Alarm given when battery capacity rate is 【30】 BatCapacityLow1 lower than 10% (setting BMS to enable validity).
- Page 46 【49】 Grid over voltage 【50】 Grid under voltage 【51】 Grid over frequency selects the local corresponding grid 【52】 Grid under frequency standard. 【53】 Grid loss 【54】 Grid DC current over 【55】 Grid standard un init Low insulation PV1+, PV2+ and PV- abnormally low 【56】...
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Page 47: Troubleshooting
7.2、Troubleshooting Fault Faults Remedy code Check if the battery switch or PV switch is closed; whether the switch is in the "ON" state; Display No display on the screen press any button on the screen to exit the screen sleep mode. Check that the battery voltage does not exceed Battery overvoltage the protection value. - Page 48 Inconsistent system Check whether the software version of each 【42】 firmware version in inverter is consistent. parallel mode 【44】 Serial number error Incorrect device serial number setting. There is a device in the parallel system with the 【45】 Parallel mode error wrong parallel mode setting.
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Page 49: Protection And Maintenance
8. Protection and Maintenance 8.1、Protection features Protection Feature Instruction When the charging current or power of the PV array configured PV input current/power exceeds the PV input rated value, the inverter will limit the input limiting protection power and charge at the rated. If the PV voltage exceeds the maximum value allowed by the PV input over-voltage hardware, the machine will report a fault and stop the PV boost to... - Page 50 Load > 125% : alarm reported and output switched off after 5s. Prevents AC back flow from the battery inverter to the bypass AC AC output reverse input. Bypass over-current Built-in AC input over-current protection circuit breaker. protection When the phase of the bypass input and the phase of the inverter Bypass phase split do not match, the inverter disables switching to the bypass inconsistency...
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Page 51: Maintenance
8.2、Maintenance To maintain optimum and long-lasting working performance, we recommend that the following items are checked twice a year. Ensure that the airflow around the inverter is not blocked and remove any dirt or debris from the radiator. Check that all exposed conductors are not damaged by sunlight, friction with other surrounding objects, dry rot, insect or rodent damage, etc. -
Page 52: Datasheet
9. Datasheet SEI-5K-SP MODEL SEI-4K-SP SEI-4.6K-SP SEI-6K-SP SEI-5.5K-SP Inverter output Rated Output Power 4000W 4600W 5500W 6000W Max. Peak Power 8000VA 9200VA 11000VA 12000W Rated Output Voltage 230Vac（Single phase）（200/208/220/240Vac settable） Output voltaege error ±5% Load Capacity of Motors Rated AC Frequency 50/60Hz ±... - Page 53 Max. input current 16/16A Max.PV Isc 27A/27A Max. Voltage of Open 500Vdc Circuit MPPT Voltage Range 120-450Vdc Grid / Generator input Input Voltage Range 90-280Vac Frequency Range 50/60Hz Max.AC Bypass current Efficiency MPPT Tracking 99.9% Efficiency Max Efficiency 97.5% European Efficiency Protection PV Input Lightning Protection...
- Page 54 Self-consumption <100W Dimensions 556*345*182mm Weight 20kg Communication port RS485 / CAN / USB / Dry contact External Modules Wi-Fi / GPRS （Optional）...
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