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SAJ Sunfree 4K User Manual

Manual is about: Sunfree Series Hybrid Solar Inverter

Summary of Sunfree 4K

  • Page 1

    Sunfree series - 0 - user manual saj hybrid solar inverter sunfree series www.Saj-electric.Com.

  • Page 2: Preface

    Sunfree series - 1 - preface thank you for choosing an saj hybrid solar inverter. We are pleased to provide you with first-class products and exceptional service. This manual includes information for installation, operation, maintenance, trouble shooting and safety. Please follow the instructions of...

  • Page 3: Content

    Sunfree series - 2 - content preface .................................................................................................... - 1 - chapter 1 safety precautions .............................................................. - 4 - 1.1 scope of application ....................................

  • Page 4

    Sunfree series - 3 - 5.7 communication connection .................................................................. - 29 - chapter 6 debugging instructions ..................................................... - 31 - 6.1 introduction of human-computer interface ........................................

  • Page 5: 1.1 Scope of Application

    Sunfree series - 4 - chapter 1 safety precautions 1.1 scope of application this user manual describes instructions and detailed procedures for installing, operating, maintaining, and troubleshooting of the following saj hybrid solar inverters: sunfree 5k, sunfree 4k, sunfree 5k-hc, sunfree 4k-hc, pl...

  • Page 6: 1.3 Target Group

    Sunfree series - 5 - 1.3 target group only qualified electricians who have read and fully understood all safety regulations contained in this manual can install, maintain and repair the inverter. Operators must be aware of the high-voltage device..

  • Page 7: Chapter 2    Preparation

    Sunfree series - 6 - chapter 2 preparation 2.1 safety instructions danger · there is possibility of during to electrical shock and high voltage. · do not touch the operating component of the inverter, it might result in burning or death. · to prevent risk of electric shock during installation and ma...

  • Page 8

    Sunfree series - 7 - notice ·public utility only. ·the pv inverter is designed to feed ac power directly to the public utility power grid; do not connect ac output of the inverter to any private ac equipment..

  • Page 9: 2.2 Explanations of Symbols

    Sunfree series - 8 - 2.2 explanations of symbols symbol description dangerous electrical voltage this device is directly connected to public grid, thus all work to the inverter shall only be carried out by qualified personnel. Danger to life due to high electrical voltage! There might be residual cu...

  • Page 10

    Sunfree series - 9 - cqc mark equipment standard with china quality inspection center safety directive. No unauthorized perforations or modifications any unauthorized perforations or modifications are strictly forbidden, if any defect or damage(device/person) is occurred, saj shall not take any resp...

  • Page 11

    Sunfree series - 10 - chapter 3 product information 3.1 application scope of products sunfree series products are hybrid solar inverters without transformers, and the inverters are important components of energy storage systems. The sunfree inverters change the dc generated by solar panels into ac w...

  • Page 12

    Sunfree series - 11 - 3.2 specification for product model sunfree 5k -hc ① ② ③ ① sununo plus represents for product name. ② xk represents rated power xkw of inverter, for example 5k means 5kw. ③ hc represents the inverter has the function of high charge current. 3.3 overview and dimensions of produc...

  • Page 13: 3.4 Datasheet

    Sunfree series - 12 - 3.4 datasheet sunfree 4k/5k specification sheet model sunfree 4k sunfree 5k dc input data max. Pv array power [w] 4200 5200 maximum pv array open circuit voltage [v] 580 mppt range @ operating voltage [v] 90～550 start voltage [v] 120 min. Dc voltage [v] 80 max. Dc input current...

  • Page 14

    Sunfree series - 13 - efficiency max. Efficiency 97.60% euro efficiency 97.00% mppt adaptation efficiency >99.5% protection ac short circuit protection integrated overload protection integrated dc voltage high/low protection integrated ac voltage high/low protection integrated ac frequency high/low ...

  • Page 15: 4.1 Safety Instructions

    Sunfree series - 14 - chapter 4 instructions for installation 4.1 safety instructions danger · dangerous to life due to potential fire or electricity shock. · do not install the inverter near any inflammable or explosive items. · this inverter will be directly connected with high voltage power gener...

  • Page 16: A B C D E

    Sunfree series - 15 - a b c d e f g h i table 4.1 assembly parts list object name number unit remarks a inverter 1 set b rear panel 1 piece c dc connector 2 pair d m6×50 hex head screw 3 piece e expansion tube 3 piece f m5×12 hex head screw and gasket 2 piece g ac connector 1 piece h h4 splitter 1 p...

  • Page 17

    Sunfree series - 16 - 4.3 the determination of the installation method and position 4.3.1 mounting method figure 4.1 mounting method (1) the equipment employs natural convection cooling, and it can be installed indoor or outdoor. (2) please install the equipment under the guidance of figure4.1. Vert...

  • Page 18

    Sunfree series - 17 - 4.3.2 installation position do not expose the inverter to direct solar irradiation as this could cause power derating due to overheating. The ambient temperature should be between -25°c ～ +60°c（-13° f ～ 140° f）（this temperature range is not equivalent to the temperature range r...

  • Page 19: 4.4 Mounting Procedure

    Sunfree series - 18 - 4.4 mounting procedure 4.4.1 mark the positions of the drill holes of the rear panel the mounting position should be marked as shown in figure 4.3. Figure 4.3 dimensions of rear panel of sunfree inverter 4.4.2 drill holes and place the expansion tubes according to the guides, d...

  • Page 20

    Sunfree series - 19 - 4.4.3 mount the screws and the rear panel the panels should be mounted in the mounting position by screws as shown in figure 4.5. Figure 4.5 mount the rear panel of sunfree inverter 4.4.4 mount the inverter carefully mount the inverter to the rear panel as shown in figure 4.6, ...

  • Page 21

    Sunfree series - 20 - chapter 5 electrical connection 5.1 safety instruction for hot-line job electrical connection must only be operated on by professional technicians. Please keep in mind that the inverter is a bi-power supply equipment. Before connection, necessary protective equipment must be em...

  • Page 22

    Sunfree series - 21 - 5.2 specifications for electrical interface figure 5.1 electrical interface of sunfree inverter table 5.1 specifications for interface code name a battery plug terminal b rs485 & drm port c rs232 /wi-fi port d dc input e dc switch f ac output g backup plug terminal.

  • Page 23: 5.3 Ac Input Wire Connection

    Sunfree series - 22 - 5.3 ac input wire connection caution：for safety operation and regulation compliance, it`s requested to install a breaker (600v/60a) between grid and inverter. Cable cross-sectional area（mm²） external diameter（mm） range recommend 4.0-6.0 4.0 4.2~5.3 table 5.2 recommended specifi...

  • Page 24: 5.4 Backup Output Connection

    Sunfree series - 23 - 5.3.2 connect the cables according to connection marks of l, n and pe. Figure 5.3 connect the cables 5.3.3 secure all parts of the ac connector tightly. Figure 5.4 screw the connector 5.4 backup output connection cable cross-sectional area（mm²） external diameter（mm） range recom...

  • Page 25

    Sunfree series - 24 - 5.4.1 feed the ac cable through the ac waterproof hole. Figure 5.5 feed cable 5.4.2 connect the cables according to connection marks of l, n and pe. Figure 5.6 connect cable 5.4.3 screw all parts of the ac connector. Figure 5.7 screw the connector.

  • Page 26: 5.5  Pv Connection

    Sunfree series - 25 - 5.4.4 connect the ac connector to the equipment securely, ensuring the pins are connected directly. Then the connection of ac cable is completed. Figure5.8 connect the inverter 5.5 pv connection cross-sectional area of cables（mm²） outside diameter of the cables（mm） scope recomm...

  • Page 27

    Sunfree series - 26 - notice · please place the connector separately after unpacking in order to avoid confusion for connection of cables. · please connect the positive connector to the positive side of the solar panels, and connect the cathode connector to the cathode side of the solar side. Be sur...

  • Page 28

    Sunfree series - 27 - a“click” should be heard or felt when the contact cable assembly is seated correctly. （ 6）fasten the lock screws on positive and negative connectors into corresponding insulated enclosure and make them tight. （ 7）connect the positive and cathode connectors into positive and neg...

  • Page 29: 5.6 Battery Connection

    Sunfree series - 28 - 5.6 battery connection caution：for safety operation and regulation compliance, it`s requested to install a breaker (600v/150a) between battery and inverter. Cross-sectional area of cables（mm²） outside diameter of the cables（mm） scope recommended value 22-25 22 25~30 table5.4 re...

  • Page 30: 5.7 Communication Connection

    Sunfree series - 29 - 5.7 communication connection 5.7.1 serial port definition sunfree series hybrid inverter has a rs232 communication port integrated . Figure 5.15 9-pin serial port pin number description effect 1 dcd（data carrier detect） data carrier detection 2 rxd（received data） serial data in...

  • Page 31

    Sunfree series - 30 - 5.7.2 rj45 pin port definition. Left 1 ext sync 2 gnd 3 none 4 canh 5 canl 6 gnd 7 rs485-a+ 8 rs485-b- right 1 drm 1/5 2 drm 2/6 3 drm 3/7 4 drm 4/8 5 refgen 6 com/drm 0 7 v+ 8 v- table 5.6 rj45 pin port definition 5.7.3 open the waterproof cover, pass the prepared communicatio...

  • Page 32

    Sunfree series - 31 - chapter 6 debugging instructions 6.1 introduction of human-computer interface esc ent power fault run esc ent power fault run a b c d e f g figure 6.1 human-computer interface table 6.1 instructions of the interface object description a yellow led light = power - after the equi...

  • Page 33: 6.2 First Run Setup

    Sunfree series - 32 - the inverter provides two buttons for inquiry of operational information and parameters, these two buttons can be used repeatedly. Name of the button operation description esc press time shorter than 2 second return to parent menu or cancel the demand press time longer than 2 s...

  • Page 34

    Sunfree series - 33 - operating and interface description： with user selected the edit box of date, edit the system date by pressing ent, and switch to the setting of m/d/y, set the target value by pressing or , drop out of edit status by pressing esc. Same operation as edit system time. Note: with ...

  • Page 35

    Sunfree series - 34 - operating and interface description： with user selected the edit box of battery type, edit the battery species by pressing ent, switch the selected object by pressing or , drop out of edit status by pressing esc; selected the edit box of battery capacity, set the battery capaci...

  • Page 36

    Sunfree series - 35 - operating and interface description： users can press "▼ " or"▲ " to select the correct country and press "ent" button to confirm the selection. While a country contain several compliances, they will occur the next to this country, as shown below： figure 6.2.3-2 country setting（...

  • Page 37

    Sunfree series - 36 - 6.2.4 inverter system main interface after the country has been set, system will reset and show main interface, as show below. ( standby mode ). Figure 6.2.4-1 main interface if system running normally, main screen will show the power flowing illustration, as show below. Figure...

  • Page 38

    Sunfree series - 37 - figure 6.2.4-3 pv power and daily generation figure 6.2.4-4 power trading of grid and daily generation figure 6.2.4-5 load power and daily generation as above three figures, the power and daily generation, the figure show the pv, loads or trading of grid in all day long. E-toda...

  • Page 39

    Sunfree series - 38 - figure 6.2.4-6 daily generation in this month in the figure above, show the pv input all days in this month. Figure 6.2.4-7 daily sell to grid in this month. In the figure above, show the daily output all days in this month. Figure 6.2.4-8 daily buy from grid in this month in t...

  • Page 40

    Sunfree series - 39 - figure 6.2.4-9 daily load consumption in this month in the figure above, show the daily output from load all days in this month. Figure 6.2.4-10 monthly pv, trading with grid, load consumption in this year in the figure above, as show monthly power of pv, grid(trading power), a...

  • Page 41

    Sunfree series - 40 - in the figure above, it shows the annual power of pv, grid(trading power) and load output in recent 6 years. It also show the finally accumulate power of pv, grid, and load power in this year in the right of figure. With system interface status, user can back to system power fl...

  • Page 42

    Sunfree series - 41 - figure 6.2.4-14 main edit interface if the menu option has the second menu interface, it will appear by press the ent button. The figure below shows the second menu of “setting”: figure 6.2.4-15 the second menu of “setting” the figure below shows the second menu of “run-info”: ...

  • Page 43

    Sunfree series - 42 - the figure below shows the interface of “about” by pressing ent. Figure 6.2.4-17 the interface of“about” the main edit interface, press or to select menu icon, as shown below: figure 6.2.4-18 menu icon selected by the main edit interface, press esc button to back menu option se...

  • Page 44

    Sunfree series - 43 - in the main edit interface, by selected inverter icon, press ent button to show the parameter of inverter’s running information: figure 6.2.4-20 information of inverter’s running in main edit interface, by selected grid icon, press ent button to show the parameter of inverter’s...

  • Page 45

    Sunfree series - 44 - figure 6.2.4-22 information of li-ion battery figure 6.2.4-23 information of lead-acid battery in main edit interface, by selected load icon, press ent button to show the parameter of load’s output information. Figure 6.2.4-24 information of load’s output.

  • Page 46

    Sunfree series - 45 - selected the “run-info” in menu, press ent to the second menu, then select “error records”, press ent to enter error and warning, as shown below: figure 6.2.4-25 error and warning selected the “setting” in menu, press ent to the second menu, then select “mode setting”, press en...

  • Page 47

    Sunfree series - 46 - figure 6.2.4-27 sell energy setup to set up “ac charge setup” and “ac discharge setup”, if not to add parameter, the default will show no parameter, as shown below: figure 6.2.4-28 add ac charge/discharge setup to set up ac charge/discharge parameter, in the interface of add “a...

  • Page 48

    Sunfree series - 47 - in the alone parameter selected records, select “workday” to choose working date, press ent to select or cancel, press esc to return to previous interface, as shown below: figure 6.2.4-30 select workday’s interface seting prevent revense folw, as shown below: figure 6.2.4-31 pr...

  • Page 49

    Sunfree series - 48 - figure 6.2.4-32 interface of battery parameter setup select “setting” in menu, press ent button to pull out the second menu, select “system setting” and press ent button to enter system parameter setup interface, as shown below: figure 6.2.4-33 interface of system parameter set...

  • Page 50

    Sunfree series - 49 - e.G select option of“date&time setting”。 figure 6.2.4-35 system date and time setup e.G select option of “display setting” figure 6.2.4-36 parameter of display setup e.G select option of “factory setting” figure 6.2.4-37 factory setting.

  • Page 51

    Sunfree series - 50 - e.G select option of “clear energy” figure 6.2.4-38 clear energy e.G select option of “clear error records” figure 6.2.4-39 clear error records e.G select option of “grid compliance” figure 6.2.4-40 grid compliance setup.

  • Page 52

    Sunfree series - 51 - e.G select option of “communication set” figure 6.2.4-41 communication set e.G select option of “change password” figure 6.2.4-42 change password to change system password, enter the interface of changing system password, input a new password, then can be changing the general a...

  • Page 53

    Sunfree series - 52 - figure 6.2.4-43 setup of beep and led while occur error or warning in system, lcd will appear prompt box to show the information about the error or warning. As shown below: figure 6.2.4-44 interface of warning while occur error or warning, lcd will display the prompt box above,...

  • Page 54

    Sunfree series - 53 - figure 6.2.4-45 the prompt interface of input password in the interface of password input, press or to edit the password. Ent button for entering edit status, press or again to input the password. Esc button for out of edit status, select “ok” to enter next interface. Ent butto...

  • Page 55

    Sunfree series - 54 - esc button pressing time longer than 2s, lcd will appear prompt box of cutoff load, press ent to confirm, inverter begin to out of load. As shown below: figure 6.2.4-48 process of cutoff load.

  • Page 56

    Sunfree series - 55 - 6.3 monitoring operation and battery manage system the equipment is equipped with an rs232 interface, rs232 can transfer to wi-fi module, ethernet module and gprs module, which can be used in the monitoring of the operation status. By connecting the internet through a wi-fi mod...

  • Page 57

    Sunfree series - 56 - chapter 7 fault code and troubleshooting code fault information explanation fault type 01 relay err relay error error 02 gfci device err gfci devices error error 03 fan err fan error error 04 eeprom err storer error error 05 lost com.Ms err interior communication error 06 iso e...

  • Page 58

    Sunfree series - 57 - 29 grid loss warn grid lost alarm 30 grid volt.10min warn average voltage of 10 minutes alarm 32 pv low warn pv voltage low alarm 34 bat volt.High warn battery voltage high alarm 36 bus softtimeout err bus soft start time out error 37 lost com.Ms err lost interior communication...

  • Page 59

    Sunfree series - 58 - system cell high 70 bms cell volt.L warn voltage of battery management system cell low alarm 71 bms chg curr.H warn battery management system charge current high alarm 72 bms voltage low warn voltage of battery management system low alarm 73 bms lost.Conn warn battery managemen...

  • Page 60

    Sunfree series - 59 - and the grid, if the above mentioned are in normal, please contact your distributor or phone saj. Gfci error check the insulation resistance of the positive side and cathode side of the solar panel; check whether the inverter is in wet environment; check the grounding of the in...

  • Page 61

    Sunfree series - 60 - chapter 8 recycling and disposal this device should not be disposed as residential waste. An inverter that has reached the end of its life and is not required is to be returned to your dealer or you must find an approved collection and recycling facility in your area..

  • Page 62

    Sunfree series - 61 - chapter 9 guarantee service please refer to the warranty card..

  • Page 63

    Sunfree series - 62 - chapter 10 contact saj guangzhou sanjing electric co., ltd. Saj innovation park, no.9, lizhishan road, guangzhou science city, guangdong, p.R.China. Postcode: 510663 web: http: //www.Saj-electric.Com technical support & service tel: +86 20 6660 0082 fax: +86 20 6660 8589 e-mail...

  • Page 64: Saj  Warranty Policy

    Sunfree series - 63 - saj warranty policy standard warranty period guangzhou sanjing electric, co., ltd (“saj”) grants a standard warranty period of 60 months (5 years) for the sununo-tl series inverters & suntrio-tl series inverters and sununo plus series inverters & suntrio plus series inverters &...

  • Page 65

    Sunfree series - 64 - during the warranty period, saj covers all costs for replacing any product or parts of the product proved to be defective in design or manufacture. To claim the warranty under the warranty policy of saj, you need to supply us with the following information and documentation reg...

  • Page 66

    Sunfree series - 65 - service after warranty expiration if the inverters for maintenance are out of warranty, saj charges an on-site service fee, parts, labor cost and logistic fee to end-user. Detailed standard refers to the listed table. Item return factury maintenance on-site maintenance without ...

  • Page 67

    Sunfree series - 66 - technician; ◆ incorrect installation or commissioning; ◆ failure to comply with the safety regulations (vde standards, etc.); ◆ the inverter has been improperly stored and damaged while being stored by the dealer or the end user; ◆ transport damage (including scratch caused by ...

  • Page 68: Warranty Card

    Sunfree series - 67 - warranty card the installer should fill in the second form while installing the inverter. For warranty claim, please complete the below forms and send this page to saj attached with the customer’s invoice. For customer to fill in name: city: country: zip: tel: fax: e-mail: info...

  • Page 69

    Sunfree series - 68 - for installer to fill in modules used: modules per string: no. Of string: installation company: contractor license number: company: city: country: zip: tel: fax: e-mail: signature: date:.

  • Page 70

    Sunfree series - 69 - add: saj innovation park, no.9, lizhishan road, science city, guangzhou high-tech zone, guangdong, p.R.China zip : 510663 tel: +86 20 6660 0082 fax : 020-6660 8589 web : http : //www.Saj-electric.Com guangzhou sanjing electric co., ltd. Edition no: v1.0