Sofar 7.5KTLM User Manual

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Preface..................................................................................................................................... III

1. Basic safety information................................................................................................... - 1 -

1.1. Safety instructions...............................................................................................- 1 -

1.2. Symbols and signs...............................................................................................- 4 -

2. Product characteristics...................................................................................................... - 6 -

2.1. Product dimensions............................................................................................. - 6 -

2.2. Function description............................................................................................- 8 -

2.3. Efficiency curve................................................................................................ - 10 -

3. Installation...................................................................................................................... - 11 -

3.1. Installation Process............................................................................................- 11 -

3.2. Checking Before Installation.............................................................................- 11 -

3.3. Tools..................................................................................................................- 14 -

3.4. Determining the Installation Position............................................................... - 15 -

3.5. Moving the SOFAR 7.5KTLM......................................................................... - 17 -

3.6. Installing SOFAR 7.5KTLM.............................................................................- 18 -

4. Electrical Connections.................................................................................................... - 20 -

4.1. Electrical connection.........................................................................................- 21 -

4.2. Connecting PGND Cables................................................................................ - 21 -

4.3. Connecting DC Input Power Cables................................................................. - 23 -

4.4. Connecting AC Output Power Cables...............................................................- 26 -

4.5. RS485,CT,inverter logic interface connection.................................................. - 29 -

4.6. WIFI/GPRS module installation procedure...................................................... - 34 -

4.7. Communication method....................................................................................- 35 -

5. Commissioning of inverter............................................................................................. - 39 -

5.1. Safety inspection before commissioning.......................................................... - 39 -

5.2. Start inverter......................................................................................................- 39 -

6. Operation interface......................................................................................................... - 40 -

6.1. Operation and Display Panel.............................................................................- 40 -

6.2. Standard Interface............................................................................................. - 41 -

6.3. Main Interface................................................................................................... - 44 -

6.4. Update Software online.....................................................................................- 48 -

7. Trouble shooting and maintenance................................................................................. - 50 -

7.1. Trouble shooting............................................................................................... - 50 -

7.2. Maintenance...................................................................................................... - 59 -

8. Technical data................................................................................................................. - 60 -

8.1. Input parameters (DC)...................................................................................... - 60 -

8.2. Output parameters (AC)....................................................................................- 61 -

8.3. Efficiency,Protection and Communication....................................................... - 62 -

8.4. General Date..................................................................................................... - 63 -

9. Quality Assurance...........................................................................................................- 64 -

SOFAR 7.5KTLM

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Page 1: Table Of Contents
3.2. Checking Before Installation................- 11 - 3.3. Tools........................- 14 - 3.4. Determining the Installation Position............... - 15 - 3.5. Moving the SOFAR 7.5KTLM................. - 17 - 3.6. Installing SOFAR 7.5KTLM................- 18 - 4. Electrical Connections....................- 20 - 4.1. Electrical connection..................- 21 - 4.2.
Page 2 User manual SOFAR 7.5KTLM Notice This manual contains important safety instructions that must be followed during installation and maintenance of the equipment. Save these instructions! This manual must be considered as an integral part of the equipment. The manual must always accompany the equipment,even when it is transferred to another user or field.
Page 3: Preface
Scope This product manual describes the installation,electrical connections, commissioning,maintenance and troubleshooting of SOFAR 7.5KTLM inverters Keep this manual where it will be accessible at all times. Target Group This manual is intended for qualified electrical technical personnel who are responsible for inverter installation and commissioning in the PV power system and PV plant operator.
Page 4 User manual SOFAR 7.5KTLM Danger indicates a hazardous situation which, if not avoided, will result in death or serious injury. Danger Warning indicates a hazardous situation which, if not avoided, could result in death or serious injury. Warning Caution indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
Page 5: Basic Safety Information
User manual SOFAR 7.5KTLM 1. Basic safety information If you have any question or problem when you read the following information, please contact Shenzhen SOFARSOLAR Co., Ltd. Note Outlines of this chapter Safety instruction It mainly introduce the safety instruction when install and operate the equipment.
Page 6 User manual SOFAR 7.5KTLM Qualified persons The customer must make sure the operator has the necessary skill and training to do his/her job.Staff in charge of using and maintaining the equipment must be skilled,aware and mature for the described tasks and must have the reliability to correctly interpret what is described in the manual.
Page 7 User manual SOFAR 7.5KTLM SOFARSOLAR Co.Ltd for help if necessary. Transport of the equipment, especially by road, must be carried out with by suitable ways and means for protecting the components (in particular, the electronic components) from violent shocks, humidity, vibration, etc.
Page 8: Symbols And Signs
User manual SOFAR 7.5KTLM Before any repair work, turn OFF the AC circuit breaker between the inverter and electrical grid first, then turn OFF the DC switch. After turning OFF the AC circuit breaker and DC switch, wait for 5 minutes at least before carrying out any maintenance or repair Danger work.
Page 9 Caution hot surface. Comply with the Conformite Europeenne (CE) certification. Grounding point. Please read this manul before install SOFAR 7.5KTLM. This indicates the degree of protection of the equipment according to IEC standard 70-1 (EN 60529 June 1997). Positive pole and negative pole of the input voltage (DC).
Page 10: Product Characteristics
User manual SOFAR 7.5KTLM 2. Product characteristics Outlines of this chapter Product dimensions It introduces the field of use, and the overall dimensions of SOFAR 7.5KTLM inverters. Function description It introduces how SOFAR 7.5KTLM inverters work and the function modules inside.
Page 11 User manual SOFAR 7.5KTLM do not require one of the poles to be grounded. The operating current during normal operation must not exceed the limits specified in the technical specifications. Only the photovoltaic modules can be connected to the input of the inverter (do not connect batteries or other sources of power supply).
Page 12: Function Description
User manual SOFAR 7.5KTLM Figure 2-4 Bracket dimensions of SOFAR7.5KTLM  Labels on the equipment The labels must NOT be hidden with objects and extraneous parts (rags,boxes,equipment,etc.);they must be cleaned regularly and kept visible at all times. 2.2. Function description DC power generated by PV array is filtered through Input Board before entering into Power Board.
Page 13 User manual SOFAR 7.5KTLM shows the operation status by Display Board. Display Board displays fault code when inverter is in abnormal operation conditions. At the same time, Control Board can trigger the relay so as to protect the internal components.
Page 14: Efficiency Curve
User manual SOFAR 7.5KTLM 2.3. Efficiency curve - 10 - Copyright © Shenzhen SOFARSOLAR Co., Ltd...
Page 15: Installation
User manual SOFAR 7.5KTLM 3. Installation Outlines of this chapter This topic describes how to install the SOFAR 7.5KTLM . Installation notes 7.5KTLM Do NOT install the SOFAR on flammable material. 7.5KTLM Do NOT install the SOFAR in an area used to store Flammable or explosive material.
Page 16 If any damage is found, do not unpack the SOFAR 7.5KTLM and contact the dealer as soon as possible. You are advised to remove the packing materials within 24 hours before installing the SOFAR 7.5KTLM inverter.
Page 17 User manual SOFAR 7.5KTLM M5Hexagon screws 2pcs Expansion bolts 10pcs M6 flat washer 10pcs Self-tapping screw 8pcs Tubular pressure terminal 3pcs Manual 1pcs The warranty card 1pcs Registration Form 1pcs 485 terminal (2pin) 1pcs - 13 - Copyright © Shenzhen SOFARSOLAR Co., Ltd...
Page 18: Tools
User manual SOFAR 7.5KTLM 3.3. Tools Prepare tools required for installation and electrical connections. Table 3-2 shows the tools required for installation and electrical connections. Tool Model Function Hammer drill Recommend drill Used to drill holes on the wall. dia. 6mm...
Page 19: Determining The Installation Position
Safety goggles Operators wear Anti-dust respirator Operators wear 3.4. Determining the Installation Position Determine an appropriate position for installing the SOFAR 7.5KTLM inverter. Comply with the following requirements when determining the installation position: Figure3-2 Installation Requirements - 15 - Copyright © Shenzhen SOFARSOLAR Co., Ltd...
Page 20 User manual SOFAR 7.5KTLM clearance for single SOFAR 7.5KTLM Inverter Installation of multiple SOFAR 7.5KTLM inverter - 16 - Copyright © Shenzhen SOFARSOLAR Co., Ltd...
Page 21: Moving The Sofar 7.5Ktlm
Figure 3-3 and Figure 3-4. Figure 3-3 Moving the inverter (1) Figure 3-4 Moving the inverter (2) Step 2 Lift the SOFAR 7.5KTLM from the packing case and move it to the installation position. To prevent device damage and personal injury, keep balance when moving the inverter because the inverter is heavy.
Page 22: Installing Sofar 7.5Ktlm
User manual SOFAR 7.5KTLM 3.6. Installing SOFAR 7.5KTLM Step 1 Determine the positions for drilling holes, ensure the hole positions are level, then mark the hole positions using a marker pen, use the hammer drill to drill holes on the wall. Keep the hammer drill perpendicular to the wall, do not shake when drilling, so as not to damage the wall.
Page 24: Electrical Connections
4.6KVA and max output of PV system is 13.8KVA. SOFAR 7.5KTLM has 2 MPPT trackers, all PV modules connected to the same MPPT should have similar rated electrical characteristics (including Isc, Voc, Im, Vm, Pm and temperature coefficients), have the...
Page 25: Electrical Connection
User manual SOFAR 7.5KTLM Interface PV input interface DVCC AC output interface DVCC SD card interface DVCA RS485 interface DVCA CT interface DVCA Logic interface DVCA WiFi/GPRS/Ethernet interface DVCA 4.1. Electrical connection Figure4-1 Shows the flowchart for connecting cables to the inverter.
Page 26 User manual SOFAR 7.5KTLM Procedure: Step 1 Remove the insulation layer with an appropriate length using a wire stripper, as shown in Figure 4-2. Figure4-2 Preparing a ground cable (1) Note： L2 is 2 to 3mm longer than L1 Step 2 Insert the exposed core wires into the OT terminal and crimp them by using a crimping tool, as shown in Figure 4-3.
Page 27: Connecting Dc Input Power Cables
User manual SOFAR 7.5KTLM 1.M5 screw、2.OT Terminal、3.Tapped hole 4.3. Connecting DC Input Power Cables Table 4-1 Recommended DC input cable specifications Cross-Sectional Area (mm ²) External Cable Diameter(mm) Range Recommended Value 4.0~6.0 4.5~7.8 Procedure Step 1 Remove cable glands from the positive and negative connectors.
Page 28 User manual SOFAR 7.5KTLM 1.Positive power cable 2.Negative power cable Note: L2 is 2 to 3 mm longer than L1. Step 3 Insert the positive and negative power cables into corresponding cable glands. Step 4 Insert the stripped positive and negative power cables into the positive and negative metal terminals respectively and crimp them using a clamping tool.
Page 29 User manual SOFAR 7.5KTLM Step 5 Insert crimped power cables into corresponding housings until you hear a "click" sound. The power cables snap into place. Step 6 Reinstall cable glands on positive and negative connectors and rotate them against the insulation covers.
Page 30: Connecting Ac Output Power Cables
SOFAR 7.5KTLM 4.4. Connecting AC Output Power Cables Connect the SOFAR 7.5KTLM to the AC power distribution frame (PDF) or power grid using AC output power cables. It is not allowed for several inverters to use the same circuit breaker.
Page 31 User manual SOFAR 7.5KTLM electrical grid. The relationship between power loss in AC cable and wire length, wire cross sectional area is shown in the following figure： Figure 4-10 wire length, wire cross sectional area and wire power loss Customer need to make AC output cable connections by himself, and the...
Page 32 User manual SOFAR 7.5KTLM Figure 4-12 Step 3 As shown in figure 4-13, remove the waterproof plug Put the finished output cable through the waterproof lock nut, Connect AC output cable as per the following requirements: Figure 4-13 Connect the yellow and green cable to the lock hole of AC terminal ...
Page 33: Rs485,Ct,Inverter Logic Interface Connection
Step 4 As shown in figure 4-14, Tighten the waterproof lock nut, install the waterproof cover and tighten it. Figure 4-14 4.5. RS485,CT,inverter logic interface connection The communication interface location of the SOFAR 7.5KTLM is shown in the figure below. Figure 4-17 Table 4-3 Recommended communication cable size are shown below,The wiring methods are the same for RS485 and CT,this part describes their wiring methods and logic interface wiring method.
Page 34 User manual SOFAR 7.5KTLM Communication function RS485 Cable size 0.5~1.5mm² 0.5~1.5mm² Outside diameter 2.5~6mm 2.5~6mm Step1 Remove the communication waterproof cover using a screwdriver; Figure 4-18 Step2 Unlock the waterproof cable gland, remove the stopper in the waterproof connector; Figure 4-19...
Page 35 User manual SOFAR 7.5KTLM through the cable gland and waterproof cover, according to Table4-4,connect the wires as per the labels, and secure the wire using a slotted screwdriver.as shown in the figure below: Table 4-4 Function description of the communication terminals...
Page 36 User manual SOFAR 7.5KTLM Logic interface pin are defined according to different standard requirements. Logic interface for AS/NZS 4777.2:2015, also known as inverter demand response modes (DRMs). The inverter will detect and initiate a response to all supported demand response commands within 2 s. The inverter will continue to respond while the mode remains asserted.
Page 37 User manual SOFAR 7.5KTLM Table 4-6 Function description of the terminal Pin NO. Pin name Description Connected to (RRCR) Relay contact 1 input K1 - Relay 1 output Relay contact 2 input K2 - Relay 2 output Relay contact 3 input...
Page 38: Wifi/Gprs Module Installation Procedure
User manual SOFAR 7.5KTLM Pin NO. Pin name Description Connected to (RRCR) Relay contact 1 input K1 - Relay 1 output Not Connected Not Connected Not Connected Not Connected Not Connected Not Connected K1 - Relay 1 output Not Connected...
Page 39: Communication Method
User manual SOFAR 7.5KTLM Figure 4-25 4.7. Communication method SOFAR 7.5KTLM gird-connected inverters offer RS485 (standard) and Wi-Fi (optional) communication modes: A. Communication between one inverter and one PC: 1. RS485 Refer to the figure shown below, connect the TX+ and TX- of the inverter to the TX+ and TX- of the RS485→...
Page 40 User manual SOFAR 7.5KTLM adapter to the computer.(NOTE1) Figure 4-26 WI-FI Refer to the figure shown below: (wireless function required for the PC).(NOTE4) Figure 4-27 The operation information (generated energy, alert, operation status) of the inverter can be transferred to PC or uploaded to the server via Wi-Fi. You can register on the website.
Page 41 User manual SOFAR 7.5KTLM Using the Wi-Fi S/N number(NOTE3), then you can login the website: http://www.solarmanpv.com/portal/LoginPage.aspx to remote monitors the inverter. B. Communication between multiple inverters and one PC: 1. RS485 Refer to the following figure: RS485 wires are connected in parallel between inverters, refer to section 4.5 of this manual for wire connection methods.
Page 42 User manual SOFAR 7.5KTLM The operation information (generated energy, alert, operation status) of the inverter can be transferred to PC or uploaded to the server via Wi-Fi. You can register on the website. http://www.solarmanpv.com/portal/Register/Regi_Pub.aspx Using the Wi-Fi S/N number(NOTE3), then you can login the website: http://www.solarmanpv.com/portal/LoginPage.aspx to remote monitors the inverter.
Page 43: Commissioning Of Inverter
5.2. Start inverter Step 1: Turn ON the DC switch.(optional) Step 2: Turn ON the AC circuit breaker. When the DC power generated by the solar array is adequate, the SOFAR 7.5KTLMinverter will start automatically. Screen showing “normal” indicates correct operation.
Page 44: Operation Interface
SOFAR 7.5KTLM 6. Operation interface Outlines of this chapter This section introduces the display, operation, buttons and LED indicator lights of SOFAR 7.5KTLM Inverter. 6.1. Operation and Display Panel Buttons and Indicator lights Key-button: · Back :to return to previous menu or enter into main menu from the standard interface.
Page 45: Standard Interface
User manual SOFAR 7.5KTLM ·Warning Light (RED) ON: ‘Fault’ or ‘Permanent’ state OFF: ‘Normal’ state ·GFCI Warning Light (RED) ON: ‘ID12: GFCI Fault’ or ‘ID20: GFCI Device Fault’ OFF: GFCI normal 6.2. Standard Interface - 41 - Copyright © Shenzhen SOFARSOLAR Co., Ltd...
Page 46 User manual SOFAR 7.5KTLM When power-on, LCD interface displays INITIALIZING, refer below picture. when control board successfully connected with communication board, the LCD display the current state of the inverter，display as shown in the figure below. - 42 - Copyright © Shenzhen SOFARSOLAR Co., Ltd...
Page 47 User manual SOFAR 7.5KTLM Inverter states includes: wait、check、normal、fault and permanent Wait:Inverter is waiting to Check State at the end of reconnection time. In this state, grid voltage value is between the max and min limits and so on; If not, Inverter will go to Fault State or Permanent State.
Page 48: Main Interface
User manual SOFAR 7.5KTLM Main Interface 6.3. Normal ------Press “back” 1.Enter Setting 2.Event List 3.SystemInfo 4.Display Time 5.Software Update (A) “Enter Setting” Interface as below: 1.Enter ------Press “back” Setting 1.Set time 12.Set Safety Voltage 2.Clear Energy 13.Set Safety Frequency 3.Clear Events 14.Insulation Resistance...
Page 49 User manual SOFAR 7.5KTLM code country code country code country Germany VDE UK-G83 CEI0-21 In Areti AR-N4105 CEI0-21 Internal Greece island Ukraine Australia EU EN50438 Brazil Spain RD1699 IEC EN61727 Mexico Tuekey Korea FAR Arrete23 Denmark Sweden Denmark Tr322 Wide-Range-60...
Page 50 User manual SOFAR 7.5KTLM Input mode selection: SOFAR 7.5KTLM inverter has 2 MPPT channels, the 2 MPPT can operate independently, also can operate in parallel. If the PV strings are connected in parallel outside the inverter, you should choose the "in parallel mode", otherwise use the default setting.
Page 51 User manual SOFAR 7.5KTLM inverter logic interface connection for details. 20. Set Power Ratio (The country is set at 10) Set generation ratio. (B) “Event List” Interface as below: Event List is used to display the real-time event records, including the total number of events and each specific ID No.
Page 52: Update Software Online
Step 2 Insert the SD card into the compute. Step 3 SOFAR SOLAR will send the Software code to the user who needs to update. After user receive the file,please decompressing file and cover the original file in SD card.
Page 53 User manual SOFAR 7.5KTLM Step 9 After the update is completed,turn off the DC breaker, wait for the LCD screen extinguish,then recover the communication waterproof and then turn on the DC breaker and AC breaker again,the inverter will enters the running state. User can check the current software version in Systemlnfo>>3.SoftVersion.
Page 54: Trouble Shooting
User manual SOFAR 7.5KTLM 7. Trouble shooting Outlines of this chapter This topic describes how to perform daily maintenance and troubleshooting to ensure long term proper operation of the inverter. 7.1. Trouble shooting This section contains information and procedures for solving possible problems with the inverter.
Page 55 User manual SOFAR 7.5KTLM Event List Event Event List Name solution List NO. description If the alarm occurs occasionally, the The power grid possible cause is that the electric grid is ID01 GridOVP voltage is too high abnormal occasionally. inverter automatically...
Page 56 User manual SOFAR 7.5KTLM Check whether too many PV modules are series connected in a PV string, thus the voltage(Voc) of the PV string is higher than the maximum input voltage of inverter. If yes, adjust The input voltage is...
Page 57 User manual SOFAR 7.5KTLM The grid current is too high , and has ID15 HwAcOCP happen hardware protection The grid current is ID16 AcRmsOCP too high The grid current HwADFaultIGri ID17 sampling error The DCI sampling ID15-ID24 are internal faults of inverter,...
Page 58 User manual SOFAR 7.5KTLM too high turn OFF the “DC switch”, wait for 5 minutes, then turn ON the “DC switch”. Check whether The bus voltage is the fault is rectified. If no, please contact ID27 VbusUnbalan not balanced technical support.
Page 59 User manual SOFAR 7.5KTLM is not consistent technical support. The grid frequency sampling value ConsistentFault_ ID50 between the master FGrid DSP and slave DSP is not consistent The DCI sampling value between the ConsistentFault_ ID51 master DSP and slave DSP is not...
Page 60 User manual SOFAR 7.5KTLM Check the insulation resistance between the The insulation ID56 PvIsoFault PV array and earth(ground), if a short circuit resistance is too low occurs, rectify the fault. The inverter temp is Ensure the installation position and OverTempFault_...
Page 61 User manual SOFAR 7.5KTLM fault The grid current is too high,and has Unrecover OCP ID70 Instant cause unrecoverable fault Check the input mode(parallel mode/ independent mode) setting of inverter according Incorrect input UnrecoverPvCon ID71 to Section 6.3 (C) 6.Input Mode of this user...
Page 62 User manual SOFAR 7.5KTLM the grid frequency is too high. too high Inverter records ID83 in case of remote The inverter has power derating operation. Check the wiring of ID83 Remote Derating derated by the remote input and output control signal port on...
Page 63: Maintenance
User manual SOFAR 7.5KTLM 7.2. Maintenance Inverters generally do not need any daily or routine maintenance. Heat sink should not be blocked by dust, dirt or any other items.Before the cleaning, make sure that the DC SWITCH is turned OFF and the circuit breaker between inverter and electrical grid is turned OFF.
Page 64: Technical Data
User manual SOFAR 7.5KTLM 8. Technical data Outlines of this chapter This topic lists the technical specifications for all SOFAR 7.5KTLM inverters. 8.1. Input parameters (DC) Technical Data SOFAR 7500TLM Max.DC power 8300W Max.DC power for 2750W*2/2750W single MPPT Max.Input voltage...
Page 65: Output Parameters (Ac)
User manual SOFAR 7.5KTLM 8.2. Output parameters (AC) Technical Data SOFAR 7500TLM Rated Output power 7500W Max.Output power 7500VA Max.Output current 32.6A Nominal grid voltage L/N/PE,220Vac 230Vac 240Vac Grid voltage range 180-276Vac( According to local grid standard ) Nominal grid...
Page 66: Efficiency,Protection And Communication
User manual SOFAR 7.5KTLM 8.3. Efficiency,Protection and Communication Technical Data SOFAR 7500TLM Max.Efficiency 98.2% Euro Efficiency 97.6% MPPT Efficiency >99.9% Self-consumption at <1W night Safety protection Anti islanding,RCMU,Ground fault monitoring Certification AS/NZS 4777, VDE V 0124-100 V 0126-1-1,VDE-AR-N 4105,CE10-21,EN50438/EN50549,G83/G59/G98/G99,NB/T32004 ;ABNT NBR16149/16150...
Page 67: General Date
User manual SOFAR 7.5KTLM 8.4. General Date Technical Data SOFAR 7500TLM Topology Transformerless Ambient temperature -30~60℃ range Permissible humidity 0~100% range Noise figure <25dB DC Switch Optional Cooling Natural convection Max.Operating altitude 2000m Outline Dimension 467*352*157mm Bracket Wall-mounted Weight 18kg...
Page 68: Quality Assurance
User manual SOFAR 7.5KTLM 9. Quality Assurance Standard warranty period The standard warranty period of inverter is 60 months (5 years).There are two calculation methods for the warranty period: 1. Purchase invoice provided by the customer: the first flight provides a standard warranty period of 60 months (5 years) from the invoice date;...
Page 69 User manual SOFAR 7.5KTLM lightning protection devices are not included in the extended warranty period. If they fail during the extended warranty period, customers need to purchase and replace them from the our company. Once the extended warranty service is purchased, our company will issue the extended warranty card to the customer to confirm the extended warranty period.

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