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SolaX Power X3-FORTH PLUS Series User Manual
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SolaX Power X3-FORTH PLUS Series User Manual

SolaX Power X3-FORTH PLUS Series User Manual

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X3-FORTH PLUS
75 kW / 120 kW / 125 kW / 136 kW / 150 kW
User Manual
Version 0.0
www.solaxpower.com
eManual in the QR code or
at http://kb.solaxpower.com/

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Summary of Contents for SolaX Power X3-FORTH PLUS Series

  • Page 1 X3-FORTH PLUS 75 kW / 120 kW / 125 kW / 136 kW / 150 kW User Manual Version 0.0 www.solaxpower.com eManual in the QR code or at http://kb.solaxpower.com/...
  • Page 2 The images included in this document are solely for illustrative purposes and may differ based on the specific product models. For more detailed information, kindly visit the website of SolaX Power Network Technology (Zhejiang) Co., Ltd. at www.solaxpower.com. SolaX retains all rights for the final explanation.
  • Page 3 About This Manual Scope of Validity This manual is an integral part of X3-FORTH PLUS series inverter. It describes the transportation, storage, installation, electrical connection, commissioning, maintenance and troubleshooting of the product. Please read it carefully before operating. This manual is valid for the following inverter models: •...
  • Page 4 Conventions The symbols that may be found in this manual are defined as follows. Symbol Description Indicates a hazardous situation which, if not avoided, DANGER will result in death or serious injury. Indicates a hazardous situation which, if not avoided, WARNING could result in death or serious injury.
  • Page 5 Table of Contents Safety ......................1 1.1 General Safety ........................1 1.2 Safety Instructions of PV, Inverter and Grid ...............1 1.2.1 Safety Instructions of PV ..................2 1.2.2 Safety Instructions of Inverter ................2 1.2.3 Safety Instructions of Grid .................3 Product Overview ..................4 2.1 Product Introduction ......................4 2.2 Appearance .........................5 2.3 DC Switch ..........................6 2.4 Symbols on the Label and Inverter ................7...
  • Page 6 7.4 PV Connection ........................42 7.5 Communication Connection..................50 7.5.1 Communication Signal Definition ..............50 7.5.2 RS485 Communication Connection Diagram ..........51 7.5.3 Wiring Procedures ....................52 7.6 Monitoring Connection ....................54 System Commissioning ................56 8.1 Checking before Power-on ....................56 8.2 Powering on the System ....................56 Operation on LCD ..................58 9.1 Introduction of Control Panel ..................58 9.2 Main interface ........................60...
  • Page 7 Technical Data ..................105 Appendix ....................108...
  • Page 8 Safety General Safety The series inverter has been meticulously designed and thoroughly tested to comply with the relevant state and international safety standards. Nevertheless, like all electrical and electronic equipment, safety precautions must be observed and followed during the installation of the inverter to minimize the risk of personal injury and ensure a safe installation.
  • Page 9 Safety 1.2.1 Safety Instructions of PV DANGER! Potential risk of lethal electric shock associated with the photovoltaic (PV) system • Exposure to sunlight can result in the generation of high DC voltage by PV modules, which can lead to electric shock causing severe injuries or even death. •...
  • Page 10 Safety WARNING! • During operation, avoid touching any parts of the inverter other than the DC switch and LCD pannel. • Never connect or disconnect the AC and DC connector while the inverter is running. • Prior to conducting any maintenance, turn off the AC and DC power and disconnect them from the inverter.
  • Page 11 Number Item Description PV strings The maximum number of input strings per MPPT is 4. Inverter X3-FORTH PLUS series Supported power grids for the power grid Grid supported by the inverter Supported power grids There are different ways of wiring for different grid systems. The power grids supported by the inverter are TN-C, TN-C-S, TN-S, TT and IT.
  • Page 12 Product Overview L1 L2 L3 N PE L1 L2 L3 Inverter Inverter Figure 2-2 Supported power grids Appearance LED indicators Nameplate AC wiring box LCD panel Main switch Electrical Electrical connection area connection area DC switch 1 DC switch 2 Figure 2-3 Appearance Table 2-1 Description of appearance Item...
  • Page 13 Product Overview Item Description Disconnect the DC input of MPPT 1, MPPT 2, and MPPT 3 when DC switch 1 necessary. Disconnect the DC input of MPPT 4, MPPT 5, and MPPT 6 when DC switch 2 necessary. Electrical Including PV terminals, communication terminal, and Dongle connection area terminal.
  • Page 14 Product Overview Symbols on the Label and Inverter Table 2-2 Description of symbols Symbol Description CE mark. The inverter complies with the requirements of the applicable CE guidelines. TUV certified. RCM mark. The inverter complies with the requirements of the applicable RCM guidelines.
  • Page 15 Product Overview Working Principle The inverter is equipped with multi-channel MPPTs for DC input to ensure maximum power even under different photovoltaic input conditions. The inverter converts the direct current generated from PV module into alternating current that meets the requirements of the power grid and feeds it into the power grid.
  • Page 16 Product Overview Working State State Description After powering on, the inverter enters the Waiting state. • When the inverter detects sufficient photovoltaic input voltage, it enters the Checking state. Waiting • If the inverter detects a fault, it enters the Fault state. •...
  • Page 17 Transportation and Storage If the inverter is not put into use immediately, the transportation and storage requirements need to be met: Transportation • The inverter must be transported in its original packaging. SolaX will not be held responsible for any damage to the inverter caused by improper transportation or by transportation after it has been installed.
  • Page 18 Preparation before Installation Selection of Installation Location The installation location selected for the inverter is quite critical in the aspect of the guarantee of device safety, service life and performance. It has the IP66 ingress protection, which allows it to be installed outdoor. The installation position shall be convenient for wiring connection, operation and maintenance.
  • Page 19 Preparation before Installation Sea breeze Inverter 500 m 1000 m Figure 4-1 Recommended installation position Sea breeze Inverter 500 m 1000 m Figure 4-2 Incorrect installation position NOTICE! • For outdoor installation, precautions against direct sunlight, rain exposure and snow accumulation are recommended.
  • Page 20 Preparation before Installation NOTICE! • When choosing a bracket, you need to consider whether the design of the bracket is conducive to heat dissipation at the back of the inverter. 4.1.3 Clearance Requirement To guarantee proper heat dissipation and ease of disassembly, the minimum space around the inverter must meet the standards indicated below.
  • Page 21 Preparation before Installation Tools Requirement Installation tools include but are not limited to the following recommended ones. If necessary, use other auxiliary tools on site. Please note that the tools used must comply with local regulations. Multimeter Hammer drill Measuring tape Utility knife (drill bit: Ø12 mm) (≥...
  • Page 22 Preparation before Installation Additionally Required Materials Table 4-1 Additionally required wires Required Conductor Outer Type material cross-section diameter Dedicated PV wire, resistance voltage 1500 V, high PV cable 4-6 mm² temperature 105℃ , fire rating VW-1 Communication Outdoor shielded twisted 0.5-0.75 mm²...
  • Page 23 Preparation before Installation Required Conductor Outer Type material cross-section diameter M8 OT/DT terminal For PE cable connection OT/DT terminal M12 OT/DT terminal For AC cable connection Fireproof mud For plugging the cut pagoda shaped coil Note: The value of S (PE) is applicable only when the conductor material of the PE cable is the same as that of the AC cable.
  • Page 24 Unpacking and Inspection Unpacking • The inverter undergoes 100% testing and inspection before delivery. However, damages may still occur during transportation. Before unpacking, please carefully check the external packaging for any signs of damage, such as punctures or cracks. • Unpacking the inverter according to the following figure.
  • Page 25 Unpacking and Inspection Scope of Delivery Communication connector Ferrule Inverter Bracket Positive PV dustproof buckle Positive PV connector Negative PV connector Negative PV dustproof buckle Positive PV pin contact Negative PV pin contact Disassembling tool for PV terminal M10 × L40 Bolt kit T30 internal hex wrench M6 Bolt Document...
  • Page 26 Unpacking and Inspection Item Description Quantity Remark Used to install on the Positive PV dust proof buckle 12 pcs positive/negative PV input port when the PV Negative PV dust proof buckle 12 pcs is not connected Used to remove the Disassembling tool for PV terminal 1 pc dust proof buckle or...
  • Page 27 Mechanical Installation WARNING! • Only qualified personnel are allowed to perform the mechanical installation in accordance with local laws and regulations. • Check the existing power cables or other piping in the wall to prevent electric shock or other damage. •...
  • Page 28 • Tighten the screws to the torque specified in this document. Otherwise, the inverter may be damaged. This damage is not coved by the warranty. NOTICE! • X3-FORTH PLUS series inverters support two mounting methods: Stand-mounting and Wall-mounting. Select an appropriate installation mode based on the actual environment.
  • Page 29 Mechanical Installation Dimensions for Mounting Before installation, check the dimensions of the bracket and ensure that enough space is reserved for the installation and heat dissipation of the entire system. 1082 Figure 6-3 Dimensions 1 (Unit: mm) 1082 Figure 6-4 Dimensions 2 (Unit: mm)
  • Page 30 Mechanical Installation Installation Procedures Stand-mounting Step 1: Attach the bracket to the stand. Use a spirit level to level the bracket: observe the bubble of the spirit level and adjust the bracket so that the bubble stays in the center position. Then mark the holes (4 holes). 325 mm 923 mm Figure 6-5 Marking the holes...
  • Page 31 Mechanical Installation Step 4: Open the anti-static bag, take out the inverter and move it to the installation site. • Manual handling: Carry the inverter to the installation site according to the weight of the equipment and the number of personnel required by the regulations. Figure 6-8 Manual handling •...
  • Page 32 Mechanical Installation Step 6: Secure the inverter on both sides with M6 bolts (part L). 4.0-4.5 N·m Figure 6-11 Securing the inverter Wall-mounting Step 1: Prepare M10 × L80 iron expansion combination in advance. Please kindly note that M10 × L80 screws are not in the accessory box. Use the bracket as a template for marking the positions of drilling holes on the wall with a spirit level and marker.
  • Page 33 Mechanical Installation Step 3: Insert the expansion screws into the holes, hang the bracket on the screw and secure it with a nut . Figure 6-14 Inserting the expansion screws Transverse section 32.0-37.0 N·m Spring washer M10 × L80 bolt Flat M10 nut washer...
  • Page 34 Mechanical Installation • Crane handling: Pass the lifting rope through the lifting holes and tie it tightly. Use the crane to lift the inverter 100 mm above the ground and pause to check the tightness of the rope. After confirming the tightness, lift the inverter to the installation site. Lifting hole location Left view Right view...
  • Page 35 Electrical Connection DANGER! • Before electrical connection, make sure all switches and AC breaker are disconnected. Otherwise, the high voltage may cause electric shock, resulting in severe personal injuries or even death. WARNING! • Only qualified personnel are allowed to perform the electrical connection following local laws and regulations.
  • Page 36 Electrical Connection Table 7-1 Description of terminals Decisive voltage Item Name Description class MAIN SWITCH PV input 1 Includes MPPT1, MPPT2, MPPT3 DVC-C PV input 2 Includes MPPT4, MPPT5, MPPT6 DVC-C Firmware upgrading and dongle DONGLE DVC-A connection RS485 / Meter / DRM connection DVC-A to be used only when connecting with a single-core cable for AC, thus...
  • Page 37 Prepared PV module supports up to 24 strings of PV string by user inputs. X3-FORTH PLUS series Purchased Select X3-FORTH PLUS series inverters. inverters from SolaX Select a computer that can install SolaX Prepared Monitoring equipment monitoring software. by user...
  • Page 38 . It is recommended to connect the inverter to a nearby grounding point. NOTICE! • X3-FORTH PLUS series supports the earthing detection function. Before start-up, the inverter will detect whether it has been properly grounded. If not (Neither the additional grounding point nor the grounding point in AC wiring box is connected.), the inverter will turn on the red light and report fault on SolaXCloud.
  • Page 39 Electrical Connection • It is strictly prohibited to connect aluminum terminals directly to the equipment housing, as this will lead to chemical corrosion and affect the reliability of the electrical connection. • When using copper-aluminum transition spacers, make sure that the aluminum side of the copper-aluminum transition spacer is in contact with the aluminum terminals and the copper side is in contact with the equipment housing.
  • Page 40 Electrical Connection PE connection procedures Step 1: Strip off the insulation of the PE cable to an appropriate length. Figure 7-7 Stripping the PE cable Step 2: Pull the heat-shrink tubing over the PE cable and insert the stripped section into the OT terminal.
  • Page 41 Electrical Connection Figure 7-10 Shrinking the tubing Step 4: Remove the M8 screws on the inverter with a Philips screwdriver. Figure 7-11 Removing the M8 screws Step 5: Connect the assembled PE cables to the grounding point of the inverter, and secure it with the original screws.
  • Page 42 Electrical Connection AC Connection NOTICE! • Before connecting the inverter to the grid, approval must be received by local utility as required by national and state regulations. Requirements for AC connection • Grid voltage requirement » The grid voltage and frequency must be within the allowable range and comply with the requirements of the local power grid.
  • Page 43 Electrical Connection Terminal material and crimping requirements • When copper wires are used, use copper terminals. • When aluminum wires are used, use aluminum terminals with copper and aluminum transition spacers or use copper and aluminum transition terminals. • It is strictly prohibited to connect aluminum terminals directly to the equipment housing, as this will lead to chemical corrosion and affect the reliability of the electrical connection.
  • Page 44 Electrical Connection Wiring procedures NOTICE! • The AC side wiring supports single-core wire wiring scheme and multi-core wire wiring scheme. • The following describes the wiring procedure using copper wires and OT terminals as an example. Refer to “4.3 Additionally Required Materials” for wire requirements for aluminum wires.
  • Page 45 Electrical Connection Step 3: Remove the baffle. Figure 7-19 Crimping the OT terminals NOTICE! • If it is inconvenient to thread the cable through the pagoda-shaped coil, remove the pagoda-shaped coil from the inverter before threading. • When wiring is complete, please return the pagoda-shaped coil to its original position and install the baffle in place.
  • Page 46 Electrical Connection Step 4: Connect the AC cable to the inverter. Unit: mm 25.0-30.0 N·m L1 L2 L3 N L1 L2 L3 N 20.0-24.0 N·m Figure 7-20 Multi-core wiring with N wire solution - Not separate PE wiring Unit: mm 25.0-30.0 N·m L1 L2 L3 N L1 L2 L3 N...
  • Page 47 Electrical Connection Unit: mm 25.0-30.0 N·m L1 L2 L3 L1 L2 L3 20.0-24.0 N·m Figure 7-22 Multi-core wiring without N wire solution - Not separate PE wiring Unit: mm 25.0-30.0 N·m L1 L2 L3 L1 L2 L3 20.0-24.0 N·m Figure 7-23 Multi-core wiring without N wire solution - Separate PE wiring...
  • Page 48 Electrical Connection Unit: mm 25.0-30.0 N·m L1 L2 L3 N L1 L2 L3 N 20.0-24.0 N·m Figure 7-24 Single core wiring solution NOTICE! • Plug the cut pagoda-shaped coil with fireproof mud before closing AC wiring box. • Prepare fireproof mud that meets local environmental standards. Step 5: Close the AC wiring box.
  • Page 49 Electrical Connection PV Connection DANGER! • When exposed to the sunlight, PV modules will generate lethal high voltage. Please take precautions. • Before connecting the PV modules, make sure that both DC switches and AC breaker are disconnected, and the PV module output is securely isolated from the ground. WARNING! •...
  • Page 50 Electrical Connection Requirements for PV connection • Voltage and current requirements » The open circuit voltage of each module cannot exceed the maximum PV input voltage (1100 V) of the inverter. Otherwise, the inverter may be damaged. » The operating voltage of PV modules must be within the operating voltage range (180~1000 V) of the inverter.
  • Page 51 Electrical Connection Terminal Selection Terminal Selection bers bers PV1/10 PV1/10/22 PV1/10/13/22 PV1/5/10/13/22 PV1/5/10/13/17/22 PV1/3/5/10/13/17/22 PV1/3/5/10/13/17/22/24 PV1/3/5/7/10/13/17/22/24 PV1/3/5/7/10/13/17/19/22/24 PV1/3/5/7/10/12/13/17/19/22/24 PV1/3/5/7/10/12/13/15/17/19/22/24 PV1/2/3/5/7/10/12/13/15/17/19/22/24...
  • Page 52 Electrical Connection Terminal Selection Terminal Selection bers bers PV1/2/3/5/7/10/12/13/15/17/19/21/22/ PV1/2/3/5/6/7/10/12/13/15/17/19/21/ 22/24 PV1/2/3/5/6/7/10/12/13/15/17/18/19/ PV1/2/3/5/6/7/9/10/12/13/15/17/18/19 21/22/24 /21/22/24 PV1/2/3/5/6/7/9/10/12/13/14/15/17/18 PV1/2/3/4/5/6/7/9/10/12/13/14/15/17/ /19/21/22/24 18/19/21/22/24 PV1/2/3/4/5/6/7/9/10/12/13/14/15/17/ PV1/2/3/4/5/6/7/8/9/10/12/13/14/15/ 18/19/21/22/23/24 17/18/19/21/22/23/24 PV1/2/3/4/5/6/7/8/9/10/12/13/14/15/ PV1/2/3/4/5/6/7/8/9/10/11/12/13/14/ 17/18/19/20/21/22/23/24 15/17/18/19/20/21/22/23/24...
  • Page 53 Electrical Connection Terminal Selection Terminal Selection bers bers Wiring procedures Step 1: Strip off the insulation of the PV cables to an appropriate length. 6 mm2 Figure 7-29 Stripping the PV cable Step 2: Insert the stripped cable into the PV pin contact (part D and part F), make sure the PV cable and PV pin contact are of the same polarity.
  • Page 54 Electrical Connection Step 3: Crimp it with crimping tool for PV terminal. Pay attention to the crimping position. Figure 7-31 Crimping the terminal Step 4: Thread the PV cable through swivel nut and insert the cable into the PV connector (part C and part E). Figure 7-32 Threading the PV cable Step 5: A "Click"...
  • Page 55 Electrical Connection Step 6: Use a multimeter which complies with the local regulation to measure the positive and negative voltage of the assembled PV connectors. Make sure the open circuit voltage does not exceed the input limit of 1100 V. Figure 7-34 Measuring the voltage of PV connectors NOTICE! •...
  • Page 56 Electrical Connection Step 8: Seal the unused PV terminal with positive and negative dustproof buckle. (Part G and H). Figure 7-36 Installing the dustproof buckles WARNING! • Seal the unused PV terminals with the dustproof buckle. If all PV terminals are connected, keep the dustproof buckles in a safe place.
  • Page 57 Electrical Connection Communication Connection 7.5.1 Communication Signal Definition RJ45_1 RJ45_2 Figure 7-38 Communication port pin number Table 7-4 Communication port pin definition Function Definition Remark RS485A IN For inverter RS485 RS485B IN networking or connecting the data collector RS485A METER RJ45_1 For connecting RS485 RS485B METER...
  • Page 58 Electrical Connection Function Definition Remark DRM1/5 DRM2/6 DRM3/7 DRM4/8 Reserved for DRM RefGen DRM0 Digital IN+ Digital IN- Digital OUT+ Dry contact Dry contact Digital OUT- Digital IN+ Digital IN- 120 Ω _IN Selection of Selection of terminating terminating resistor resistor for shorting 120 Ω...
  • Page 59 Electrical Connection Multi-inverter communication system In case of multiple inverters, all the inverters can be connected via RS485 cables in the daisy chain manner. Data Logger Figure 7-40 Multi-inverter communication diagram 7.5.3 Wiring Procedures Step 1: Prepare standard network cable with RJ45 connector and 0.5-0.75 mm2 outdoor shielded twisted pair, and crimp the twisted pair to the ferrule (part B).
  • Page 60 Electrical Connection Step 3: Remove the waterproof plug based on actual needs. Figure 7-43 Removing the waterproof plug Step 4: Route the crimped cable through the nut, seal part and body in sequence. Body Seal part Figure 7-44 Running a cable through Step 5: Insert the crimped cable into the housing according to the number identification on the housing.
  • Page 61 Electrical Connection Step 6: Keep the buttons on both sides pressed and connect it to the COM port of the inverter. There will be a slight sound of “Click” if it is correctly connected. Click! Figure 7-46 Connect to inverter Monitoring Connection This series of inverters support Wi-Fi/LAN/4G mode connection.
  • Page 62 Electrical Connection Cloud Figure 7-49 4G mode connection diagram Monitoring connection procedure Remove the dust cap from the Dongle terminal. Figure 7-50 Removing the dust cap Plug the dongle to the inverter. Figure 7-51 Plugging to the inverter CAUTION! • Taking the WiFi 3.0 connection as an example, please refer to the corresponding installation manual for the specific connection procedure and precautions regarding the dongle.
  • Page 63 System Commissioning Checking before Power-on Table 8-1 Start-up Inspection Rules Item Inspection rules Mounting • The inverter is mounted correctly and securely Wiring • All DC and AC cables are properly and securely connected • All communication cables are connected correctly and securely •...
  • Page 64 System Commissioning Step 5: When the DC connection indicator and the grid connection indicator are flashing at the same time and the alarm indicator does not stay on, turn on the DC switch 1 and DC switch 2, and continue to observe the LED lights to check the operation status of the inverter.
  • Page 65 Operation on LCD Introduction of Control Panel LCD panel Power (kW) XXXXXX Down Enter Figure 9-1 Control panel • In normal state, the Power, TodayEnergy, TotalEnergy and Status information will be displayed. You can press the keys to switch information. •...
  • Page 66 Operation on LCD LED indicators Communication Alarm indicator indicator DC connection Grid connection indicator indicator Figure 9-2 Control panel • During normal operation, the communication indicator, DC connection indicator, and grid connection indicator are always on. • When a fault occurs, the alarm indicator is on. Use the monitoring system to view the fault code and fault name.
  • Page 67 Operation on LCD * Note: • During software upgrading, all indicators blink in a chasing light pattern. • If the software upgrade fails, the communication indicator light (blue) goes off, the alarm indicator light (red) remains on, and the DC connection indicator light (green) and grid connection indicator light (green) remain off.
  • Page 68 Operation on LCD Status Ua xxx.xV xxx.xA Ub xxx.xV xxx.xA >Grid Uc xxx.xV xxx.xA Freq xx.xxHz >Status MPPT1_V xxx.xV MPPT1_I xxx.xA >Solar ..MPPT6_V xxx.xV MPPT6_I xxx.xA The status function contains Grid and Solar. Press Up and Down to select and press Enter to confirm the selection.
  • Page 69 Operation on LCD Meter Pgrid/Meter xxxxx.xxxx kW Total Import >Meter xxxxx kWh Total Export xxxxx kWh The user can check the active power received from the meter and import/export energy by this function. There are three parameters: Pgrid/Meter, Total Import and Total Export. Press Up and Down to review the values.
  • Page 70 Operation on LCD 9.6.1 Using Users' Password >Language >Language > English < >Y2025-M02-D12 >Date Time H11: M 35 SET The sections in this diagram are the same whether accessed >RS485 Addr >password == 0000 with the end-user > 1 < password or the >Communication installer password.
  • Page 71 Operation on LCD Communication RS485 Addr: the modbus address of the external communication protocol. RS485 Baud: The baud rate of the external communication protocol. At present,4800, 9600 and 19200 are supported, and the default is 9600. With this function, the inverter can communicate with the computer, through which the operating status of the inverter can be monitored.
  • Page 72 Operation on LCD 9.6.2 Using Installer password >Country >Safety >VDE4105 >System State >System ON/OFF > ON < >Control Power 100.0 % >PV Connection >PV Connection > Multi < >Export Mode > Total < >Export Control >Pgrid Bias > Disable < >Active Power >Bias Power 10.0 %...
  • Page 73 Operation on LCD System ON/OFF ON means the inverter is in running state which is the default state. OFF means that the inverter stops running and only the LCD screen is on. >System state >ON< PV connection The user can select the PV connection type by this function. >PV connection >Multi<...
  • Page 74 Operation on LCD Active power >Active Power >ActiveRiseSlope 100.0 % 100.0 % >Soft Start >SoftStart_Slope >Active Power > Disable < 100.0 % >Reconnect Limit >Reconnect_Slope > Enable < 100.0 % This interface is used to set the active power according to the requirement of grid. >Active Power 100.0 % Reactive power...
  • Page 75 Operation on LCD Grid protection See page 68. >Voltage >Frequency See page 69. >H/L VRT >Grid Protection See page 70. >Curve Set See page 71. >GridProtectLV >GridProtectLV > Level1 < >O/V Stage1 > VacOvp1stTime >Grid Protection >Voltage 350.0V 10.00S >U/V Stage1 >VacUvp1stTime 150.0V 10.00S...
  • Page 76 Operation on LCD >O/V Stage1 > FacOfp1stTime >Frequency >Grid Protection 52.00Hz 10.00 S >U/F Stage1 >FacUfp1stTime 48.00Hz 10.00 S >O/F Stage2 >FacOfp2ndTime 53.00Hz 10.00 S >U/F Stage2 > FacUfp2ndTime 48.00Hz 10.00 S > O/F Stage3 > FacOfp3rdTime 52.00Hz 10.00 S >U/F Stage3 >...
  • Page 77 Operation on LCD >LVRT >Grid Protection >H/L VRT >LVRT >LVRT 4 -T > Enable < > xxx.xx S < >>LVRT 1 -% >LVRT 5 -T > xxx.xx% < > xxx.xx S < > LVRT 2 -% >LVRT 6 -T > xxx.xx% < >...
  • Page 78 Operation on LCD >UF/OF >Grid Protection >Curve Set >PF(p) >Q(u) >P(U) Function >Var-Watt >UF/OF >PF(p) >fULCO >UfDroopRate >PF-Watt >PowerRatio2 50.00 Hz 30.00 % > Disable < x.xx >EntryDelayTime >fPmin >PF(p)_3Tau >PowerRatio3 10 S 50.00 Hz 3tau = 0 S x.xx >ExitDelayTime >OfDroopRate >EntryVolt...
  • Page 79 Operation on LCD >P(u) Function >Q(u) >Q(u) >QuQ1 >P(u) Function >Pu_PowerRatio1 > Disable < 0.01 % > Disable < 50 % >PuGridV1 >Pu_PowerRatio2 >Q(u)_3Tau >QuQ2 200.0 V 50 % 3tau = 0 S 0.01 % >QuGridV1 >Pu_PowerRatio3 >PuGridV2 >QuQ3 200.0 V 200.0 V 50 % 0.01 %...
  • Page 80 Operation on LCD Parallel setting >M/S Mode >M/S Mode > Master < >ParallelSetting >System Limit >System Limit 100.0 % M/S Mode can choose Master or Slave. System Limit can set whether to allow the reverse flow power from inverter to power grid, and the default value is 0%. GMPPT >MpptScanMode >...
  • Page 81 Operation on LCD System reset >Factory Reset >System Reset >Reset ErrorLog >Reset Meter Here you can reset error logs, and meter. In addition, restoring factory default setting is allowed. Take Reset Meter as an example:The user can clear the meter energy by this function. Press Up and Down button to select and press Enter to confirm it.
  • Page 82 Operation on LCD About Machine Type Manager: Vxxx.xx AFCI FORTH PLUS xxKW MCUBoot: xxx.xx xxx.xx Product SN Internal Code >About xxxxxxxxxxxxx A xxx.xx D xxx.xx Master: Vxxx.xx Dongle SN Slaver: Vxxx.xx This interface shows information of the inverter, include model, SN, software version of master DSP, slaver and ARM board and internal code.
  • Page 83 10 Operation on SolaX App and Web 10.1 Introduction of SolaXCloud SolaXCloud is an intelligent management platform for home energy, which integrates energy efficiency monitoring, device management, data security communication and other integrated capabilities. While managing your home energy device, it helps you optimize the efficiency of electricity consumption and improve the revenue of power generation.
  • Page 84 Operation on SolaX App and Web Figure 10-2 Online help on SolaXCloud NOTICE! • The screen shots in this chapter correspond to the SolaXCloud App V6.2.0, which might change with version update and should be subject to the actual situations. 10.3 Operations on SolaXCloud Web Page Open a browser and enter www.solaxcloud.com to complete registration, login, add site...
  • Page 85 11 Troubleshooting and Maintenance 11.1 Power off Turn off the system by System ON/OFF on LCD screen. Switch off the DC and AC switch/breaker and disconnect the inverter from DC Input and AC output. Wait for 15 minutes for de-energizing. WARNING! •...
  • Page 86 Troubleshooting and Maintenance Error Code Name Diagnosis and Solutions Inverter grounding fault 1. Check whether the Neutral line of the power grid is correctly connected; GND_CONN_FAIL 2. Check whether the inverter ground wire is correctly connected; 3. Try to re-run the inverter; 4.
  • Page 87 Troubleshooting and Maintenance Error Code Name Diagnosis and Solutions PV string 4 is of reverse polarity. 1. Check whether the positive and negative polarity of the string is reversed, if so, wait until the current of the PV string is reduced to below 0.5A, then put the "DC PV04_REVERSE SWITCH"...
  • Page 88 Troubleshooting and Maintenance Error Code Name Diagnosis and Solutions PV string 9 is of reverse polarity. 1. Check whether the positive and negative polarity of the string is reversed, if so, wait until the current of the PV string is reduced to below 0.5A, then put the "DC PV09_REVERSE SWITCH"...
  • Page 89 Troubleshooting and Maintenance Error Code Name Diagnosis and Solutions PV string 14 is of reverse polarity. 1. Check whether the positive and negative polarity of the string is reversed, if so, wait until the current of the PV string is reduced to below 0.5A, then put the "DC PV14_REVERSE SWITCH"...
  • Page 90 Troubleshooting and Maintenance Error Code Name Diagnosis and Solutions PV string 19 is of reverse polarity. 1. Check whether the positive and negative polarity of the string is reversed, if so, wait until the current of the PV string is reduced to below 0.5A, then put the "DC PV19_REVERSE SWITCH"...
  • Page 91 Troubleshooting and Maintenance Error Code Name Diagnosis and Solutions PV string 24 is of reverse polarity. 1. Check whether the positive and negative polarity of the string is reversed, if so, wait until the current of the PV string is reduced to below 0.5A, then put the "DC PV24_REVERSE SWITCH"...
  • Page 92 Troubleshooting and Maintenance Error Code Name Diagnosis and Solutions MPPT3 voltage is higher than the allowable value 1. If the DC switch is "ON", check whether the highest open-circuit voltage of the corresponding PV string PV03_VOLT_ is higher than the maximum input voltage; if yes, please contact the installer;...
  • Page 93 Troubleshooting and Maintenance Error Code Name Diagnosis and Solutions BOOST4 software overcurrent: 1. Check PV input for short circuit; BST04_SW_OCP 2. Try to re-run the inverter; 3. Contact the installer. BOOST5 software overcurrent: 1. Check PV input for short circuit; BST05_SW_OCP 2.
  • Page 94 Troubleshooting and Maintenance Error Code Name Diagnosis and Solutions Grid overvoltage (level 1) 1. Check whether the voltage at the grid point is too high, if so, please contact the local power operator; 2. If it is confirmed that the voltage at the grid point is GRID_OVP1 higher than the permitted range and with the consent of the local power operator, modify the over-voltage...
  • Page 95 Troubleshooting and Maintenance Error Code Name Diagnosis and Solutions Grid undervoltage (level 2) 1. If it occurs occasionally, it may be a short time abnormality of the power grid, the inverter will return to normal operation after detecting the power grid is normal, no manual intervention is required;...
  • Page 96 Troubleshooting and Maintenance Error Code Name Diagnosis and Solutions Grid overfrequency (level 2) 1. If it occurs occasionally, it may be a short time abnormality of the power grid, the inverter will return to normal operation after detecting the power grid is normal, no manual intervention is required;...
  • Page 97 Troubleshooting and Maintenance Error Code Name Diagnosis and Solutions Grid fault 1. Check whether the grid voltage is within the GRID_FRT allowable range; 2. Try to re-run the inverter; SMCU voltage fault GRID_SMCU_ 1. Try to re-run the inverter; VOLT 2.
  • Page 98 Troubleshooting and Maintenance Error Code Name Diagnosis and Solutions Negative BUS software overvoltage NBUS_FSW_OVP 1. Try to re-run the inverter; 2. Contact the installer. BUS software overvoltage 1. Check whether the PV input voltage is within the DCBUS_SW_OVP allowable range; 2.
  • Page 99 Troubleshooting and Maintenance Error Code Name Diagnosis and Solutions Auxiliary source undervoltage AUX_HW_UVP 1. Try to re-run the inverter; 2. Contact the installer. Relay fault INV_RLY_FLT 1. Try to re-run the inverter; 2. Contact the installer. Relay pull in fault RLY_ON_FAIL 1.
  • Page 100 Troubleshooting and Maintenance Error Code Name Diagnosis and Solutions Inverter phase B hardware overcurrent INV_HW_OCP_B 1. Try to re-run the inverter; 2. Contact the installer. Inverter phase C hardware overcurrent INV_HW_OCP_C 1. Try to re-run the inverter; 2. Contact the installer. Internal SCI failure: SCI_FAIL 1.
  • Page 101 Troubleshooting and Maintenance Error Code Name Diagnosis and Solutions The AC terminal temperature is higher than the allowable value 1. Check if the inverter installation location is well AC_TB_NTC_OTP ventilated and the ambient temperature is not beyond the maximum permissible ambient temperature range; 2.
  • Page 102 Troubleshooting and Maintenance Error Code Name Diagnosis and Solutions The bus electrolytic capacitor temperature is higher than the allowable value: 1. Check if the inverter installation location is well BUS_ELECAP_ ventilated and the ambient temperature is not beyond TMP_HIGH the maximum permissible ambient temperature range; 2.
  • Page 103 Troubleshooting and Maintenance Error Code Name Diagnosis and Solutions External fan 3 fault EX_FAN3_FAULT Check the condition of the fan and replace it if it is damaged. External fan 4 fault EX_FAN4_FAULT Check the condition of the fan and replace it if it is damaged.
  • Page 104 Troubleshooting and Maintenance Item Check notes Maintenance interval • Check if the grounding cables are firmly connected to the grounding terminals as well as Grounding all terminals and ports are properly sealed. Use Every 6 months reliability a ground resistance tester to test the grounding resistance from the inverter enclosure to the PE bar in the power distribution box.
  • Page 105 Troubleshooting and Maintenance Step 2: Gently pull the fan bracket until the fan bezel is flush with the inverter chassis. And unplug the connector to disconnect the cables. Figure 11-2 Disconnecting the cable Step 3: Pull out the fan bracket completely. Figure 11-3 Pulling out the fan bracket completely Step 4: Replace the fan bracket with a new one and lock the screws.
  • Page 106 Troubleshooting and Maintenance 11.5 Upgrading Firmware WARNING! • Make sure that the type and format of the firmware file are correct. Do not modify the file name. Otherwise, the inverter may not work properly. • Do not modify the folder name and file path where the firmware files are located, as this may cause the upgrade to fail.
  • Page 107 Troubleshooting and Maintenance » If the software is successfully upgraded, the communication indicator (blue) is off, and other indicators are steady on. » If the software upgrade fails, only the alarm indicator (red) is steady on. After the upgrade is complete, the inverter automatically starts after the current indicator status is maintained for one minute.
  • Page 108 12 Decommissioning 12.1 Disassembling the Inverter WARNING! • Strictly follow the steps below to disassemble the inverter. • Only use the dedicated removal tool delivered with the inverter to disassemble the PV connector. • Before dismantling the inverter, please be sure to turn off the DC switch and AC breaker, and then unplug the PV and AC cables, otherwise it will lead to an electric shock hazard.
  • Page 109 Decommissioning Step 5: Disconnect the PV connectors. After confirming that all switches are turned off, use a current clamp to measure the DC current of each input string of the inverter. Make sure the current is less than 0.5 A. Figure 12-3 Measuring DC current Insert the disassembling tool into the notch of PV connectors and slightly pull out the connectors.
  • Page 110 Decommissioning Disconnect the AC cables and PE cable. Figure 12-6 Disconnecting cables Close the AC wiring box. 5.0-7.0 N·m Figure 12-7 Closing the AC wiring box Step 7: Disconnect the communication connector: Simultaneously press down on the tabs on both sides of the AC connector and gently pull the connector outward. Figure 12-8 Disconnecting the communication connector Step 8: Pull out the Dongle (if any).
  • Page 111 Decommissioning Step 11: Unscrew the screws for securing the inverter and remove the inverter from the bracket. Step 12: Unscrew the screws for fastening the bracket and remove the bracket if needed. 12.2 Packing the Inverter • Use the original packaging materials if available. Figure 12-9 Packing the inverter •...
  • Page 112 13 Technical Data • DC input X3-FTH-75K-P- Model X3-FTH-120K-P X3-FTH-125K-P X3-FTH-136K-P X3-FTH-150K-P Max. PV array input 112.5 187.5 power [kWp] Max. PV input 1100 1100 1100 1100 voltage [d.c. V] Nominal input 580 / 600 580 / 600 580 / 600 580 / 600 voltage [d.c.
  • Page 113 Technical Data X3-FTH-75K-P- Model X3-FTH-120K-P X3-FTH-125K-P X3-FTH-136K-P X3-FTH-150K-P THDi (Rated power) <3% Max. output fault current [a.c A] Max. output overcurrent protection [a.c A] • Efficiency X3-FTH-75K-P- Model X3-FTH-120K-P X3-FTH-125K-P X3-FTH-136K-P X3-FTH-150K-P Maximum efficiency 98.6% European efficiency 98.2% • General X3-FTH-75K-P- Model X3-FTH-120K-P...
  • Page 114 Technical Data • Protection X3-FTH-75K-P- Model X3-FTH-120K-P X3-FTH-125K-P X3-FTH-136K-P X3-FTH-150K-P DC trip switch DC reverse-polarity protection DC isolation protection Residual current detection Over current protection Over load protection Over/under voltage protection Active anti-islanding Frequency Shift method SPD (DC/AC) DC: Type II (Optional: Type I+II) / AC: Type II Arc-fault circuit Optional interrupter(AFCI)
  • Page 115 14 Appendix Datahub Parallel Connection The series inverter provides the parallel connection function when connected with Datahub, which could support at most 60 inverters to parallel in one system and can control zero injection to the grid with a meter installed in the main circuit. In this parallel system, the Datahub will be the master of the system, and all the inverters are the slaves.
  • Page 116 Appendix Wiring operation Step 1: Connect one end of an RS485 communication cable with Datahub, and the other end with one of the slave inverters. Step 2: Connect all the slave inverters with each other with RS485 cables. Step 3: Connect the meter with the Datahub and the mains.
  • Page 117 Appendix The interconnection between the host and slave is made by the Pins in the table below, which are connected to the electricity meter. Port Definition RS485A IN+ RS485B IN- RJ45-1 RS485A METER RS485B METER RS485A OUT+ RJ45-2 RJ45_1 RJ45_2 RS485B OUT- Setting procedure •...
  • Page 118 Contact Information AUSTRALIA UNITED KINGDOM Unit C-D Riversdale House, Riversdale 21 Nicholas Dr, Dandenong South VIC 3175 Road, Atherstone, CV9 1FA +61 1300 476 529 +44 (0) 2476 586 998 service@solaxpower.com.au service.uk@solaxpower.com TURKEY GERMANY Fevzi Çakmak mah. aslım cd. no 88 A Am Tullnaupark 8, 90402 Nürnberg, Karatay / Konya / Türkiye Germany...
  • Page 119 SolaX Power Network Technology (Zhejiang) Co., Ltd. Add.: No. 278, Shizhu Road, Chengnan Sub-district, Tonglu County, Hangzhou, Zhejiang, China E-mail: info@solaxpower.com Copyright © SolaX Power Network Technology (Zhejiang) Co., Ltd. All rights reserved. 320101122900...

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X3-fth-75k-p-lvX3-fth-120k-pX3-fth-125k-pX3-fth-136k-pX3-fth-150k-p