SAJ R5-5K-T2 User Manual
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SAJ R5-5K-T2 User Manual

Solar inverter
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Marnix Furniere
January 30, 2025

Mijn zonnepanelen geven al 2 dagen niets. Ben gaan kijken en mijn omvormer is volledig uitgevallen. Geen enkele code te zien en ook geen enkel lampje dat brandt. Wat moet ik doen om te heropstarten?

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Summary of Contents for SAJ R5-5K-T2

  • Page 1 Series - 1 -...

  • Page 2: Preface

    Series Preface Thank you for choosing an SAJ AC-coupled 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 this manual so that we can ensure delivery of our professional guidance and wholehearted service.

  • Page 3: Table Of Contents

    Series Content Preface ....................- 1 - Chapter 1 Safety Precautions ............- 4 - 1.1 Scope of Application ................- 4 - 1.2 Safety Instructions ..................- 4 - 1.3 Target Group .................... - 4 - Chapter 2 Preparation ..............- 5 - 2.1 Safety Instructions ..................
  • Page 4 Chapter 7 Fault Code and Troubleshooting ....... - 45 - Chapter 8 Recycling and Disposal ..........- 49 - Chapter 9 Contact SAJ ..............- 50 - SAJ Warranty Policy ..............- 51 - Warranty Card ................. - 54 -...

  • Page 5: Chapter 1 Safety Precautions

    Series 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 grid-tied inverters: R5-4K-T2； R5-5K-T2； R5-6K-T2； R5-8K-T2； R5-9K-T2； R5-10K-T2； R5-12K-T2；R5-13K-T2； R5-15K-T2； R5-17K-T2； R5-20K-T2 Please keep this manual all time available in case of emergency.

  • Page 6: Chapter 2 Preparation

    ·Any unauthorized actions including modification of product functionality of any form may cause lethal hazard to the operator, third parties, the units or their property. SAJ is not responsible for the loss and these warranty claims.
  • Page 7 Series 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. - 6 -...

  • Page 8: Explanations Of Symbols

    The inverter complies with the safety instructions from China's Quality Center. No unauthorized perforations or modifications Any unauthorized operations or modifications are strictly forbidden, if any defect or damage(device/person) occurs, SAJ shall not take any responsibility for it. - 7 -...

  • Page 9: Chapter 3 Product Information

    Series Chapter 3 Product Information 3.1 Application Scope of Products R5-XK-TX products are grid-tied three phase inverters without transformers, and the inverters are important components of grid-tied solar power systems. The R5 inverter change the DC generated by solar panels into AC which is in accordance with the requirements of public grid and send the AC into the grid, Table 3.1 shows the structural diagram of the typical application system of R5 inverter.

  • Page 10: Specification For Product Model

    Series 3.2 Specification for Product Model R5 – XK – T2 ① ② ③ ① R5 represents for product name. ② XK represents rated power XkW of inverter, for example 4K means 4kW. ③ T means three phase；2 represents the inverter has the function of dual MPPT. 3.3 Overview of products The dimensions of R5 series products is shown in Figure 3.2 ,Figure 3.3 &...
  • Page 11 Series Figure 3.3 Dimensions of R5-13K/15K-T2 Figure 3.4 Dimensions of R5-17K/20K-T2 - 10 -...

  • Page 12: Datasheet

    Series 3.4 Datasheet R5-4K/5K/6K/8K-T2 R5-4K-T2 R5-5K-T2 R5-6K-T2 R5-8K-T2 Type Input (DC) Recommended Accessed DC Power 4840 6050 7260 9680 Max. DC Voltage[V] 1100 MPPT Voltage range [V] 160-950 Nominal DC Voltage[V] Start Voltage[V] Min. DC Voltage[V] Max. DC Input Current PV1/PV2 [A] 12.5/12.5...
  • Page 13 Series Grid Monitoring Integrated AC Short Circuit Current Protection Integrated AC Grounding Detection Integrated DC Surge Protection Integrated AC Surge Protection Integrated Thermal Protection Integrated String Current Detection Integrated Anti-island Protection Monitoring Interface AC Connection Plug-in connector DC Connection Human machine interface LED+(bluetooth/Wi-Fi+APP) Communication port RS232(USB joints)+RS485(RJ45 crystal joints)
  • Page 14 Series R5-9K/10K/12K-T2 R5-9K-T2 R5-10K-T2 R5-12K-T2 Type Input (DC) Recommended Accessed DC Power 10890 12100 14400 Max. DC Voltage[V] 1100 MPPT Voltage range [V] 160-950 Nominal DC Voltage[V] Start Voltage[V] Min. DC Voltage[V] Max. DC Input Current PV1/PV2 [A] 12.5/12.5 Number of DC Connection Sets per MPPT Number of MPPT DC Switch Integrated...
  • Page 15 Series AC Short Circuit Current Protection Integrated AC Grounding Detection Integrated DC Surge Protection Integrated AC Surge Protection Integrated Thermal Protection Integrated String Current Detection Integrated Anti-island Protection Monitoring Interface AC Connection Plug-in connector DC Connection Human machine interface LED+(bluetooth/Wi-Fi+APP) Communication port RS232(USB joints)+RS485(RJ45 crystal joints) Communication Mode...
  • Page 16 Series R5-13K/15K/17K/20K-T2 R5-13K-T2 R5-15K-T2 R5-17K-T2 R5-20K-T2 Type Input (DC) Recommended Accessed DC Power 15730 18150 20570 24200 Max. DC Voltage[V] 1100 MPPT Voltage range [V] 160-950 180-950 Nominal DC Voltage[V] Start Voltage[V] Min. DC Voltage[V] Max. DC Input Current PV1/PV2 [A] 25/12.5 25/25 Number of DC Connection Sets per MPPT...
  • Page 17 Series AC Short Circuit Current Protection Integrated AC Grounding Detection Integrated DC Surge Protection Integrated AC Surge Protection Integrated Thermal Protection Integrated String Current Detection Integrated Anti-island Protection Monitoring Interface AC Connection Terminal Block DC Connection Human machine interface LED+(bluetooth/Wi-Fi+APP) Communication port RS232(USB joints)+RS485(RJ45 crystal joints) Communication Mode...

  • Page 18: Chapter 4 Instructions For Installation

    4.2 Pre-installation Check 4.2.1 Check the Package Although SAJ’s inverters have surpassed stringent testing and are checked before they leave the factory, it is uncertain that the inverters may suffer damages during transportation. Please check the package for any obvious signs of damage, and if...

  • Page 19: The Determination Of The Installation Method And Position

    Series 4.3 The Determination of the Installation Method and Position 4.3.1 Mounting Method Figure 4.1 Mounting Method ①The equipment employs natural convection cooling, and it can be installed indoor or outdoor. ②Please install the equipment under the guidance of Figure4.1. Vertical installation on floor level is recommended.

  • Page 20: Mounting Procedure

    Choose locations with sufficient air exchange. Ensure additional ventilation, when necessary. To make sure the installation spot is suitably ventilated, if multiple SAJ grid-tied solar inverters are installed same area, the following safety clearance in Figure 4.2 shall be followed for proper ventilation conditions.
  • Page 21 Series Figure 4.3 Dimensions of rear panel of R5-4K/5K/6K/8K/9K/10K/12K-T2 17.6 3-16*8 Figure 4.4 Dimensions of rear panel of R5-13K/15K-T2 17.6 3-16*8 Figure 4.5 Dimensions of rear panel of R5-17K/20K-T2 - 20 -...
  • Page 22 Series 4.4.2 Drill Holes and Place the Expansion Tubes According to the guides, drill 3 holes in the wall (in conformity with position marked in Figure 4.6,Figure 4.7 & Figure 4.8 and then place expansion tubes in the holes using a rubber mallet. Figure 4.6 Drill holes’...
  • Page 23 Series 比例 Figure 4.8 Drill holes’ dimensions of R5-17K/20K-T2 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 4.9. Figure 4.9 Mount the Rear Panel 4.4.4 Mount the Inverter Carefully mount the inverter to the rear panel as shown in Figure 4.10 and 4.11, Make sure that the rear part of the equipment is closely mounted to the rear panel.
  • Page 24 Series Figure 4.10 Mount inverter Fig. 4.11 Fasten the inverter and hanging panel with screws - 23 -...
  • Page 25 Series 4.4.5 Install anti-theft lock As shown in figure 4.12 & figure 4.13 anti-theft lock could be added to the inverter and hanging panel. Diameter of the lock hole is φ6.0mm and anti-theft lock of which the diameter of lock hook is φ5.0mm shall be recommended. Users shall prepare anti-theft lock by themselves.

  • Page 26: Chapter 5 Electrical Connection

    Series 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 employed by technicians including insulating gloves, insulating shoes and safety helmet.

  • Page 27: Specifications For Electrical Interface

    Series 5.2 Specifications for Electrical Interface Figure 5.1 Electrical Interface of R5-4K/5K/6K/8K/9K/10K/12K-T2 Code Name DC Switch Decompression Valves DC Input RS232 Communication Port(GPRS/WIFI/4G) Ground Connecting port RS485 Communication Port AC Quick-connect Terminal Table 5.1 Specifications for Interface - 26 -...
  • Page 28 Series Figure 5.2 Electrical Interface of R5-13K/15K-T2 Figure 5.3 Electrical Interface of R5-17K/20K-T2 Code Name DC Switch Decompression Valves DC Input RS232 Communication Port(GPRS/WIFI/4G) RS485 Communication Port Ground Connecting port Terminal Block Table 5.2 Specifications for Interface - 27 -...

  • Page 29: Ac Side Connection

    Series 5.3 AC Side Connection Cross-sectional Area of Cables（mm²） External diameter（mm） Scope Recommended Value 6.0-10.0 5.3~6.7 Table 5.3 Recommended power grid connecting cable specification If the grid-connection distance is too far, please amplify diameter selection of the AC cable as per the actual condition. 5.3.1 R5-4K~12K-T2AC side electrical connection GND of the inverter.
  • Page 30 Series 3.Connect the cables according to connection marks of L, N and PE. Figure 5.6 Connect cable 4.Screw all parts of the AC connector. Figure 5.7 Screw the connector 5.Connect the AC connector to the equipment securely, ensuring the pins are connected directly.
  • Page 31 Series 5.3.2 R5-13K~20K-T2 AC side electrical connection 1.GND of the inverter. After penetrating the external hex head screw through OT terminal of the grounding line, screw in the grounding port of enclosure of the inverter in clockwise direction and make sure it’s screwed up tightly. Fig.

  • Page 32: Dc Side Connection

    Series 3.After fixing the cover at the AC output wire terminal with screws, tighten up the AC waterproof nut. Fig. 5.11 Tighten up AC interface protective cover and the locker 5.4 DC Side Connection Cross-sectional Area of Cables（mm²） Outside Diameter of the Cables （mm）...
  • Page 33 Series Figure 5.13 Cathode Connector 1. Insulated Enclosure 2. Lock Screw 3. Cathode Connector 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.
  • Page 34 Series 3.Feed the positive and cathode cables into corresponding lock screws. 4.Put the metal positive and cathode terminals into positive cable and cathode cable whose insulated enclosure has been stripped, and crimp them tightly with a wire crimper. Make sure that the withdrawal force of the pressed cable is bigger than 400N.

  • Page 35: Communication Connection

    Series 5.5 Communication Connection R5 inverter is standardly equipped with a RS485 interfaceand a RS232 interface . Figure5.16 RS485 pin Pin Number Description Effect Empty GND_W Ground wire +7V_W Power source Empty Empty Empty RS485-A Transmission RS485 differential signal RS485-B Table 5.5 RS485 pin port definition - 34 -...
  • Page 36 Series Figure5.17 RS232 pin Pin Number Description Effect Power source RS-232 TX Send data RS-232 RX Accept data Ground wire Table 5.6 USB pin port definition 1.USB interface could be externally connected with eSolar GPRS/4G module, for operation in details please refer to eSolar GPRS/4G module quick installation guide.

  • Page 37: Chapter 6 Debugging Instructions

    Series Chapter 6 Debugging Instructions 6.1 Introduction of Human-computer Interface Figure 6.1 Human-computer Interface A-Power indicator light B-System status light C-Communication lamp Description LED lamps state 指示灯 Yellow Always light on The inverter is just on power. Flicker: 1 s/time The inverter is in the initialization or waiting state. Green Always light on The inverter is in normal grid-connected state.

  • Page 38: Monitoring Operation And Battery Manage System

    Account---Please use the installer account login. Note: For the end user, please download and install the “eSolar Air” APP and log in to the APP or SAJ official website to register your account. 6.2.2 Nearby monitoring Connecting way 1 — Bluetooth connection After installing the eSolar GPRS/4G module (with built-in bluetooh) the mobile phone could be directly connected with the inverter via Bluetooth.
  • Page 39 Series Connection setting iOS system operation steps 1. Choose “setting” →choose “bluetooth””→ open 2.Log in APP → choose “My” interface → choose “Bluetooth” “Remote control” → choose connection way as “Bluetooth ” 3.Choose “next step” → search for equipment → 4.
  • Page 40 Series Connection setting Android system operation steps 1.Choose “setting” →choose “bluetooth””→ open 2.Log in APP → choose “My” interface → choose “Bluetooth” “Remote control” → choose connection way as “Bluetooth ” 3.Choose “next step” → search for equipment → 4. Connect successfully→set country and grid code click the Bluetooth name matched with the inverter for first start-up→after inverter start, users can (ex.: R5-4K-T2:00001)
  • Page 41 Series Equipment information Connection way, running state, basic information, running information,Power information and events information of the communication of the inverter could be checked. 1.Click “Basic Information” Inverter model, Module SN code,Module firmware version,Communication board firmware version,Main board firmware version,Slave board firmware version could be checked.
  • Page 42 Series Fig. 6.4 Running Information 3.Click “Power Information” Current power, today energy,monthly energy,yearly energy,total energy could be checked. Fig. 6.5 Power Information - 41 -...
  • Page 43 Series 4.Click “Event Information” Time of the events, events sequence number (referring to fault codes details in Chapter 7 Fault Codes and Common Troubleshooting) and events content of the faults of the inverter could be checked. Fig. 6.6 Events Information Connecting way 2 —...
  • Page 44 Series Connection setting Please refer to the eSolar WiFi module operating manual for more details in operation. Equipment information Connection way, running state, basic information,running information,Power information and events information of the communication of the inverter could be checked. 1.Click “Basic Information” nverter model, Module SN code,Module firmware version,Communication board firmware version,Main board firmware version,Slave board firmware version could be checked.
  • Page 45 Series 6.2.3Remote monitoring 1.Connect the Internet via the eSolar GPRS/4G module, and upload the inverter data onto the server and customers could monitor running information of the inverter remotely via the eSolar Web Portal or their mobile customer terminals. 2.Connect the Internet via the eSolar WiFi module, and upload the inverter data onto the server and customers could monitor running information of the inverter remotely via the eSolar Web Portal or their mobile customer terminals.

  • Page 46: Chapter 7 Fault Code And Troubleshooting

    Series Chapter 7 Fault Code and Troubleshooting Error Code Explanation Relay Error Master Storer Error Master High Temperature Master Low Ttemperature Master Lost Interior Communication Master GFCI Devices Error Master DCI Devices Error Master Current Sensor Error Master L1/L2/L3 Voltage High Master 09/11/13 L1/L2L3 Voltage Low Master 10/12/14...
  • Page 47 Temperature High is in too high or too low temperature, if the above mentioned Error are in normal, please contact your distributor or phone SAJ. If this error occurs frequently, please contact your distributor GFCI Device Error or phone SAJ.
  • Page 48 Current High the above mentioned are in normal, please contact your distributor or phone SAJ. Check the settings of the solar panel. SAJ designer can help Bus Voltage High you.If the above mentioned are in normal, please contact your distributor or phone SAJ.
  • Page 49 Series Fault Information Troubleshooting phone SAJ. Check the settings of the solar panel. SAJ designer can help PV Voltage Fault you. If the above mentioned are in normal, please contact your distributor or phone SAJ. Check the connection of communication cables between Lost Communication control board and display board.

  • Page 50: Chapter 8 Recycling And Disposal

    Series 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. - 49 -...

  • Page 51: Chapter 9 Contact Saj

    Series Chapter 9 Contact SAJ Guangzhou Sanjing Electric Co., Ltd. SAJ Innovation Park, No.9, Lizhishan Road, Guangzhou Science City, Guangdong, P.R.China. Web: http: //www.saj-electric.com Technical Support & Service Tel:+86 20 6660 8588 Fax:+86 20 6660 8589 E-mail: service@saj-electric.com International Sales...

  • Page 52: Saj Warranty Policy

    The purchaser of SAJ inverters should extend the warranty period in 18 months from the date of settlement or 30 months from the date of shipment from SAJ by providing the serial number of the unit and purchased receipt (whichever is shorter).
  • Page 53 SAJ Service Center by packing in its original package if possible. 1.5Service 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.
  • Page 54 (hardware or software) and debugging the faulty product. ■ Logistic fee: Cost of delivery, tariff and other derived expense when defective products are sent from user to SAJ or/and repaired products are sent from SAJ to user. 1.6Exclusion of Liability Any defect caused by the following circumstances will not be covered by the manufacturer’s warranty (the Dealers or Distributors are responsible and...

  • Page 55: Warranty Card

    Series 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:...
  • Page 56 Series 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: - 55 -...
  • Page 57 Series - 56 -...

This manual is also suitable for:

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