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User Manual SAJ Solar Inverter R6-15K/17K/20K/22K/25K-T2-32 R6-25K/30K/33K36K-T3-32 R6-36K/40K/50K-T4-32 R6-5K/6K/8K/10K/15K-T2-32-LV R6-20K-T3-32-LV R6-25K/30K-T4-32-LV - 1 -...
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Series Preface Thank you for choosing SAJ solar inverter. We are pleased to provide you 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.
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 on-grid inverters: R6-15K-T2-32; R6-17K-T2-32; R6-20K-T2-32; R6-22K-T2-32; R6-25K-T2-32; R6-25K-T3-32; R6-30K-T3-32; R6-33K-T3-32; R6-40K-T4-32; R6-50K-T4-32 R6-36K-T3-32;...
· 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.
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Series CAUTION · The solar inverter will become hot during operation. Please do not touch the heat sink or peripheral surface during or shortly after operation. · Risk of damage due to improper modifications. NOTICE · Public utility only. · The solar 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.
The inverter complies with the safety instructions from China's Quality Center. No unauthorized operations 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. - 8 -...
The R6 inverter converts 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, Figure 3.1 shows the structural diagram of the typical application system of R6 inverter. Figure 3.1 R6 series application Name Description Remarks...
32 means that max. DC input current of per MPP tracker is 32A. ○ LV means that nominal AC output voltage is 127V(F-N)/220V(F-F). 3.3 Overview of products The dimensions of R6 series products is shown in Figure 3.2 , Figure 3.3 & Figure 3.4. Figure 3.2 Dimensions of R6-15K/17K/20K/22K/25K-T2-32; R6-5K/6K/8K/10K/15K-T2-32-LV...
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Series Figure 3.3 Dimensions of R6-25K/30K/33K/36K-T3-32; R6-20K-T3-32-LV Figure 3.4 Dimensions of R6-36K/40K/50K- T4-32; R6-25K/30K-T4-32-LV - 11 -...
Series 3.4 Datasheet R6-15K/17K/20K/22K/25K-T2-32 R6-15K-T2-3 R6-17K-T2-3 R6-20K-T2-3 R6-22K-T2-3 R6-25K-T2- Model Input (DC) Max. PV Array Power [Wp]@STC 22500 25500 30000 33000 37500 Max. Input Voltage [V] 1100 MPP Voltage Range [V] 180-1000 Nominal Input Voltage [V] Start-up Voltage [V] Max. Input Current [A] 32/32 Number of MPP Trackers Number of Strings per MPP Tracker...
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Series AC Surge Protection Type III Anti-islanding Protection AFCI Protection Optional Interface AC Connection Terminal Block DC Connection Display LED+APP (Bluetooth) Communication Port RS232+RS485 (RJ45)+DRM(RJ45) Communication Mode Wi-Fi/Ethernet//4G Load Monitoring 24/7 (Optional) General Data Topology Transformerless Nighttime Power Consumption [W] <0.6 Operating Temperature Range -40℃~+60℃...
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Series R6-25K/30K/33K/36K-T3-32, R6-36K/40K/50K-T4-32 R6-25K-T3- R6-30K-T3- R6-33K-T3- R6-36K-T3- R6-36K-T4- R6-40K-T4- R6-50K-T4- Model Input (DC) Max. PV Array Power 37500 45000 49500 54000 54000 60000 75000 [Wp]@STC Max. Input Voltage [V] 1100 MPP Voltage Range [V] 180-1000 Nominal Input Voltage [V] Startup Voltage [V] Max.
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Series Anti-islanding Protection AFCI Protection Optional Interface AC Connection Terminal Block DC Connection LED+APP (Bluetooth) Display Communication Port RS232+RS485 (RJ45)+DRM(RJ45) Communication Mode Wi-Fi/Ethernet//4G Load Monitoring 24/7 (Optional) General Data Topology Transformerless Nighttime Power Consumption [W] <0.6 -40℃~+60℃ Operating Temperature Range Cooling Method intelligent fan Cooling 0%~100% non-condensing...
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Series Note: 1. The above parameters might be slightly modified according to different grid codes. 2. If you need more information about our product certifications, please contact our sales. - 16 -...
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Series R6-5K/6K/8K/10K/15K-T2-32-LV R6-5K-T2- R6-6K-T2-32- R6-8K-T2-32- R6-10K-T2-32- R6-15K-T2-32- Model Input (DC) Max. PV Array Power [Wp]@STC 7500 9000 12000 15000 22500 Max. Input Voltage [V] 1100 MPP Voltage Range [V] 180-1000 Nominal Input Voltage [V] Start-up Voltage [V] Max. Input Current [A] 32/32 Number of MPP Trackers Number of Strings per MPP Tracker...
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Series Anti-islanding Protection AFCI Protection Optional Interface AC Connection Terminal Block DC Connection Display LED+APP (Bluetooth) Communication Port RS232+RS485 (RJ45)+DRM(RJ45) Communication Mode Wi-Fi/Ethernet//4G Load Monitoring 24/7 (Optional) General Data Topology Transformerless Nighttime Power Consumption [W] <0.6 Operating Temperature Range -40℃~+60℃ Cooling Method intelligent fan Cooling Ambient Humidity...
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Series R6-20K-T3-32-LV, R6-25K/30K-T4-32-LV R6-20K-T3-32-LV R6-25K-T4-32-LV R6-30K-T4-32-LV Model Input (DC) Max. PV Array Power [Wp]@STC 30000 37500 45000 Max. Input Voltage [V] 1100 MPP Voltage Range [V] 180-1000 Nominal Input Voltage [V] Startup Voltage [V] Max. Input Current [A] 32/32/32 32/32/32/32 Number of MPP Trackers Number of Strings per MPP Tracker 2/2/2...
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Series AFCI Protection Optional Interface AC Connection Terminal Block DC Connection LED+APP (Bluetooth) Display Communication Port RS232+RS485 (RJ45)+DRM(RJ45) Communication Mode Wi-Fi/Ethernet//4G Load Monitoring 24/7 (Optional) General Data Topology Transformerless Nighttime Power Consumption [W] <0.6 -40℃~+60℃ Operating Temperature Range Cooling Method intelligent fan Cooling 0%~100% non-condensing Ambient Humidity...
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 such evidence is present, do not open the package and contact your dealer as soon as possible 4.2.2 Check the Assembly Parts...
F) to ensure optimum operation. Choose locations with sufficient air exchange. Ensure additional ventilation, when necessary. To make sure the installation spot is suitably ventilated, if multiple SAJ on-grid solar inverters are installed same area, the following safety clearance in Figure 4.2 shall be followed for proper ventilation conditions.
Series 80CM 80CM 30CM 4.2 Installation position 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 4.4. Figure 4.3 Dimensions of rear panel of R6-15K/17K/20K/22K/25K-T2-32 R6-5K/6K/8K/10K/15K-T2-32-LV - 23 -...
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Series Figure 4.4 Dimensions of rear panel of R6-25K/30K/33K-T3-32, R6-20K-T3-32-LV, R6-36K/40K/50K-T4-32, R6-25K/30K-T4-32-LV 4.4.2 Drill Holes and Place the Expansion Tubes According to the guides, drill 4 holes in the wall (in conformity with position marked in Figure 4.5, Figure 4.6), and then place expansion tubes in the holes using a rubber mallet. According to the position marked in the figure, drill the corresponding holes and adjust the position of the bracket so that the inverter is perpendicular to the horizontal plane.
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Series Figure 4.6 Drill holes’ dimensions of R6-30K/33K/36K-T3-32, R6-20K-T3-32-LV, R6-36K/40K/50K-T4-32, R6-25K/30K-T4-32-LV 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 4.7. Figure 4.7 Mount the rear panel - 25 -...
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Series 4.4.4 Mount the Inverter Carefully mount the inverter to the rear panel as shown in Figure 4.8 and 4.9, Make sure that the rear part of the equipment is closely mounted to the rear panel. Figure 4.8 Mount inverter - 26 -...
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Series Figure 4.9 Fasten the inverter and hanging panel with screws - 27 -...
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.
Series 5.2 Specifications for Electrical Interface Figure 5.1 Electrical interface of R6-15K/17K/20K/22K/25K-T2-32, R6-5K/6K/8K/10K/15K-T2-32-LV Code Name DC Switch Decompression Valves DC Input RS232 Communication (GPRS/ Wi-Fi /4G) Ground Connection RS485 Communication Terminal Block Table 5.1 Specifications for interface - 29 -...
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Series Figure 5.2 Electrical interface of R6-25K/30K/33K/36K-T3-32, R6-20K-T3-32-LV Code Name DC Switch Decompression Valves DC Input RS232 Communication (GPRS/ Wi-Fi /4G) Ground Connection RS485 Communication Terminal Block Table 5.2 Specifications for interface - 30 -...
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Series Figure 5.2 Electrical interface of R6-36K/40K/50K-T4-32, R6-25K/30K-T4-32-LV - 31 -...
Series Code Name DC Switch Decompression Valves DC Input RS232 Communication (GPRS/ Wi-Fi /4G) Ground Connection RS485 Communication Terminal Block Table 5.3 Specifications for interface 5.3 AC Connection Cross-sectional area of cables(mm² ) Recommender Model additional grounding Recommended Scope cable size (mm² ) value 15K/17K/20K/22K/25K-T 2-32...
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Series Figure 5.4 Inverter ground protection 2. Screw off the screws at the AC output wire cover and take out the cover. Penetrate the AC cable of which the insulation layers has been peeled off through the AC waterproof locking screw hole of the cover. Lock L1 wire, L2 wire, L3 wire, N wire and PE wire tightly as per the marked connection positions on the interface board.
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Series 3. After fixing the cover at the AC output wire terminal with screws, tighten up the AC waterproof nut. 5.4 DC Side Connection Cross-sectional area of cables(mm² ) Outside diameter of the cables (mm) Scope Recommended value 4.0-6.0 4.2~5.3 Table 5.5 Recommended specifications of DC cables DC connector is made up of the positive connector and the negative connector Figure 5.6 Positive connector...
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Series · Please connect the positive connector to the positive side of the solar panels, and connect the negative connector to the negative side of the solar side. Be sure to connect them in right position. Connecting Procedures: 1. Tighten the lock screws on positive and negative connector. 2.
Series 1. Connection port Figure 5.9 Connect the inverter NOTICE Before inserting the connector into DC input terminal of the inverter, please make su re that · the DC switch of the inverter is OFF. · Please use the original terminal to install. 5.5 Communication Connection R6 inverter is standardly equipped with a RS485 interface and a RS232 interface.
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Series +7V_W Power supply RS485-A Transmission RS485 RS485-B differential signal Table 5.6 RS485 pin port definition Figure 5.11 RS232 pin Pin Number Description Function Power supply RS-232 TX Send data RS-232 RX Receive data Ground wire Table 5.7 USB pin port definition 1.
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Series https://www.saj-electric.com/ 2. USB interface could be externally connected with eSolar 4G module, for operation in details please refer to eSolar 4G module Quick Installation Guide in https://www.saj-electric.com/. 3. USB interface could be externally connected with eSolar WiFi module, for operation in details please refer to eSolar WiFi module Quick Installation Guide in https://www.saj-electric.com/.
Series Chapter 6 Debugging Instructions 6.1 Introduction of HMI (Human-Machine Interface) Figure 6.1 Human-Machine Interface Status Description Display The inverter is in normal Green Solid green on-grid state Breathing The inverter is in the Green Mode initialization or waiting state. Solid red An error occurs Ring Light...
Series 6.2 Monitoring Operation ● R6 series products and they could be monitored through eSolar APP. ● This equipment is standardly equipped with a USB interface which could transfer AIO3/4G module (with built-in Bluetooth) and Wi-Fi module to monitor running state of the equipment.
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Series Connection setting 2. Choose “User” interface → 1. Log in eSolar O&M APP. 3. Choose connection way as choose “Remote control”. “Bluetooth” → choose “next step”. 4. Search for equipment → click 6. Connect successfully → set 5. Select the configuration method the Bluetooth name matched with country and grid code for first of the module network connection.
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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 info” Inverter model, Module SN code, Module firmware version, Communication board firmware version, Main board firmware version, Slave board firmware version could be checked.
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Series Fig. 6.3 Running information 3. Click “Power info” Current power, today energy, monthly energy, yearly energy, total energy could be checked. Fig. 6.4 Power information - 43 -...
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Series 4. Click “Event info” 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. 6.5 Events information - 44 -...
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Series 6.2.3 Remote monitoring 1. Connect the internet via the eSolar AIO3 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.
Series Chapter 7 Fault Code and Troubleshooting Error Code Explanation Master Relay Error Master EEPROM Error Master Temperature High Error Master Temperature Low Error Master Lost Communication Master GFCI Device Error Master DCI Device Error Master Current Sensor Error 09/11/13 Master Phase1/ Phase2/ Phase3 Voltage High 10/12/14 Master Phase1/ Phase2/ Phase3 Voltage Low...
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Check whether the radiator is blocked, whether the inverter High Temperature is in too high or too low temperature, if the above mentioned Error is in normal, please contact your distributor or call SAJ technical support. Master Lost If this error occurs frequently, please contact your distributor Communication or call SAJ technical support.
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Series · Check the volt . of the grid · Check the connection between the inverter and the grid. · Check the settings of the on -grid standards of the inverter. · If the volt . of the grid is higher than the volt. regulated by AC Voltage Error local grid, please inquire the local grid workers whether they can adjust the volt.
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Overcurrent the above mentioned are in normal, please contact your distributor or call SAJ technical support. Check the settings of the solar panel. SAJ designer can help Over Bus Voltage you. If the above mentioned are in normal, please contact your distributor or call SAJ technical support.
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Check if connection of the AC output grounding terminal is Null line-to-earth stable and reliable. If the content mentioned as above is voltage fault normal, please contact your distributor or call SAJ technical support. Table 7.2 Troubleshooting - 50 -...
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 to be returned to your dealer and it must be disposed carefully by an approved collection and recycling facility in your area. - 51 -...
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...
Series SAJ Warranty Policy 1.1 Standard Warranty Period Starting from the date of shipment from SAJ factory or 60 months (5 years) starting from the date of purchased invoice marked (whichever is longer). 1.2 Extension of Warranty 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).
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SAJ Service Center by packing in its original package if possible. 1.5 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.
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Series ■ 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. 1.6 Exclusion 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 authorized...
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:...
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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: - 54 -...
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Series Guangzhou Sanjing Electric CO., LTD. ADD: SAJ Innovation Park, No.9, Lizhishan Road, Science City, Guangzhou High-tech Zone, Guangdong, P.R.China (Zip: 510663) Tel: +86 20 6660 8588 Fax: +86 20 6660 8589 Web: http: //www.saj-electric.com V0.0 - 55 -...
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