User Manual for Sunways Solar Inverters NT 2600, NT 4000 and NT
Contents
1. 2 To install the remote inquiry of an indi vidual solar inverter the RS 232 signal can be routed directly from the solar inverter to the remote modem Cable type B is used for this purpose For the RS 232 connection between solar inver ter and modem a cable length of 50 m should not be exceeded When connecting an individual solar inverter the remote modem is connected directly to the RS 232 signal Stripped length 11 mm Jumper JP400 open see page 121 3 PV system for 2 to 99 solar inverters with interface converter IC INVERTER 1 INVERTER 2 to 99 Connection to PC via RS 485 RS 232 In order to connect several solar inverters to a PC the RS 485 signal is looped through from inverter to inverter until it is led into the inter face converter From here the RS 232 signal is conducted to the PC Jumper JP400 is connected to the solar inverter that is furthest away from the interface converter It must be open for all other solar inverters RS 485 RS 485 wn un nn Stripped length 11 mm Jumper JP400 see above RS 485 O RS 485 O 3 Up to 99 solar inverters can be con the interface converter and the furthest nected together and read out using this solar inverter The individual solar inverters connection In2. User Manual for Sunways Solar Inverters NT 2600 NT 4000 and NT 6000 300 mm OLS List of Contents 1 0 General information 83 84 85 86 87 88 2 0 Information on installation 90 91 93 94 95 97 98 100 79 102 General safety information Opening the unit Scope of supply inspecting the delivery Integration into the PV system Design of the PV generator Standard components of a PV system Protection concept Electrical safety Mechanical safety Information on cleaning Requirements on the place of installation Electrical connection and cable entry Grid connection PV generator connection Important Information Communication connections Connecting the sensors 3 0 Information on operation 104 106 108 111 112 113 114 115 120 122 123 125 127 130 Switching the solar inverter on and off Configurations Structure and menu levels for configuration Display Data memory General information Initialising the remote modem Connection and circuitry options Configuring the interface cables Sunways NT Monitor data acquisition Operation of Sunways NT Monitor Screen displays Indications causes and remedies Warranty period Terms and exclusion of liability for solar inverters 80 81 4 0 Appendix 133 135 138 140 144 146 150 Designation and descr
3. a residual current has occur red in the PV system and the solar inverter has sub sequently disconnected from the grid The battery is empty Remedies The entire PV system must be checked for insulation errors Have the battery button cell replaced by an expert The battery is located on the LCD display board Warranty period The warranty period is five years from purchase of the solar inverter by the end user Please complete the enclosed war ranty card and return it to Sunways AG Please keep the original invoice with the date of purchase in a safe place This will be required as proof in addition to the warranty card in the event of a claim Conditions During the warranty period the solar inverter will be repaired free of labour and material costs in Constance Instal lation costs are borne by the customer unless agreed otherwise The completed warranty card must be sent to Sunways AG Constance within seven days of purchase Please notify us of any warranty claims by telephone technical hotline 49 7531 99677577 stating your name address telephone and serial number and your email address if applicable Sunways AG must be allowed the necessary time to eliminate the defect Sunways AG will endeavour to eliminate the defect within 14 days of receipt of the unit If this is not possible the customer will be infor med of the reason and the time when the defect will be eliminated will be sp
4. 55014 1 EN 55011 EN 61000 3 2 EN 61000 3 3 E DIN VDE 0126 Explanation Maintaining the EMC guideline assumes an EMC adapted installation of the component within the plant or the machine Please pay attention to the installation notes of the technical specifications Tests were carried out using a typical construction in a test assembly that conforms with the stands The legal requirements with regard to resistance to interference and to emission of interference limit values and standards are outlined in the above mentioned documentation These Sunways products are intended for installation into a PV System The test results are not applicable to every installed state in every PV System This declaration therefore does not guarantee the EMC characteristics of the end product Konstanz 2004 08 05 Lu A 147 City Date Roland Burkhardt Declaration of Conformity of nominal power and maximum output power of solar inverters Product Solar Inverter Manufacturer Sunways AG Photovoltaic Technology Macairestr 3 5 D 78467 Konstanz Type Sunways NT 6000 NT 4000 NT 2600 Nominal power Sy 4 6 kVA 3 3 kVA 2 2 kVA Maximum output power Smax10Min 5 kVA 3 3 kVA 2 2 kVA Smax10Min 1 08 1 1 Explanation The maximum output power of the solar inverter has to be declarated as a max 10 minute average Konstanz 2004 08 05 un AG Ort Datum Roland Burkhardt CEO 48 Declaration of Conformity as defined by the guidelines f
5. Sunways will now appear on your screen On the menu bar at the top you will see the four menu areas Program Data Settings and Help Setting menu To configure your solar inverter open the Settings menu by clicking on it with the mouse and click on the Inverter key Enter the address number that you have defined for your solar inverter next to Inverter For example the number 1 for one solar inverter In the case of several units select all Then enter the desired date and time The settings are transferred to the solar inver ter by clicking on the Make change key If you are using several solar inverters and wish to make a change to the numbering you can enter the old number of the solar inverter in the top section of the right window half and the new number beneath it The numbering is changed by clicking on the Make change key Exit the window with the Close key You will go back to the Setting menu You can set the interface configuration with your PC by clicking on the Connec tion key By clicking on the Remote modem key you can configure an optional modem e g if you wish to retrieve data by remote inquiry Data menu In the Data menu you can call up the current accumulated performance and energy of the solar inverter by clicking on the Online key You can display the data measured at 15 minute intervals by clicking o
6. The optional irradiation sensor with temperature sensor is connected to the corresponding terminals at the bottom right of the middle board z 2 lt Top figure Connection block for temperature sensor cables with the signals Temp Solar V and V 102 103 Configuration of the cable terminal block Temperatu re sensor measuring signal Temp Solar radiation measuring signal Solar Positive supply 5V V Supply GND V Using a small screwdriver press the orange terminal The terminal will open Insert the cable stripped to a minimum of 11 mm into the respective terminal hole Loosen the screwdriver The cable is fixed in the connection Once again check that the cable connec tion is firmly located Seal the unrequired cable glands by placing a spare piece of cable in the gland hole and tightening the screw clamp Connect the solar inverter internally via the ground cable yellow green to the cabinet cover See also Setup step 7 Put the cabinet cover on Screw it down tightly with the four screws on the front Do not place any objects e g this manu al on the cabinet of the solarinverter Free ventilation behind the solar inverter must be able to take place unimpeded If the unit is installed in the open air please take special care to ensure that the screwed cable glands are properly sealed and that the cabinet cover is precisely located Switching the solar inverter on
7. U AC AC current I AC date time AC power module temperature module irradiation fed in today fed in since commissio ning error 15 minute values DC voltage U DC AC voltage AC AC current I AC date time temperature irradiation fed in in 15 minutes accumu lated daily total of all 15 minute average values Representation as graphic or print Option of saving as bitmap Fade in of graphics possible Individual solar inverters can be called up with the scroll menu Daily values Date and daily energy in the solar inverter Representation as graphic or print Option of saving as bitmap Zoom in of graphics possible Individual solar inverters can be called up with the scroll menu Monthly values Date in the solar inverter fed in since commissioning and monthly energy Representation as graphic or print Option of saving as bitmap Zoom in of graphics possible Individual solar inverters can be called up with the scroll menu Fault data Date time and type of fault for the last ten faults Calendar Date and time in the solar inverter Modem Selection of the modem type and input of the address signal If required detailed information on Sunways NT Monitor can be found under the Help menu item in the program software 122 123 Operation of Sunways NT Monitor After installing the Sunways NT Monitor software on your PC you can start the program The word
8. and off Switching on When the solar inverter is mechanically installed and connected to the electrical cables the unit can be commissioned as follows Switch the grid connection on through the external safety cutouts Switch the PV generator voltage on by closing the PV generator switch The solar inverter will start up with adequate PV power If the PV input voltage is high enough the solar inverter will begin ope ration and feed the solar energy into the electrical grid You can see the operation on the display The current feed in power is shown here The solar inverter is supplied by the PV generator The solar inverter switches on in the morning and off again in the eve ning The relevant switching on and swit ching off thresholds are defined for the PV generator If the solar energy is not sufficient to supply the electronics several switch on attempts may have to be made 104 105 in cloudy weather This is normal and does not affect either the yield or the mode of functioning of the solar inverter Switching off Disconnect the PV generator side first by opening the PV generator switch and then the grid connection by isolating the relevant mains fuse If your PV system does not have a PV generator switch you must disconnect the grid connection first of all by isolating the relevant mains fuse When you do this a grid error will be entered in the error memory of the solar inverter If the
9. are only fully discharged after this period After disconnecting the unit from the grid and from the PV generator you must wait at least five minutes before opening the unit 84 85 Scope of supply Sunways Solar Inverter in the NT series Installation frame Manual setup warranty card CD Rom with software 2 pairs of TYCO SOLARLOK connectors Inspecting the delivery The condition of our products is checked prior to delivery Although our products are carefully packed in recyclable packing transportation damages can still occur These are generally the transport compa ny s responsibility Please inspect the delivered solar inverter thoroughly If you discover any damage to the packing or the solar inverter please inform the transport company immediately Your specialist dealer will be glad to assist you if required Any damages must always be reported to the transport company in wri ting seven days after receipt of the goods at the latest Integration of the solar inverter into the PV system Design of the PV generator The technical data of the selected PV generator must be within the specifica tion of the solar inverter see Technical Data The Sunways NT Sundim design program for the PV generator may be helpful Sunways NT Sundim is available on the enclosed CD or from our web site www sunways de Please take account of the following points before planning your system Pay attention to the sky
10. errors or omissions Sunways AG reserves the right to modify the hardware and software features described here at any time without prior notice These instructions may not be duplica ted passed on copied or translated in to other languages either in whole or in part in any form or by any means without prior written permission of Sunways AG Sunways AG does not provide any war ranty for damages due to defective or lost data incorrect operation or mal functioning of the solar inverter the software additional equipment or PCs All rights reserved Sunways AG The products specified in the title are copyright protected and are sold with licences No part of this document may be reproduced in any form without prior written permission of Sunways AG and the Sunways licensors Registered trademarks Sunways NT 2600 NT 4000 and NT 6000 and the Sunways logo are registered trademarks of Sunways AG Constance HERIC is a registered trademark of Fraunhofer Munich 150 Concept and design Denklabor Kommunikationsb ro GmbH Lucerne Switzerland ur AG een www sunways de sunways Photovoltaic Technology 9 1 03 0 0 Version 03 05
11. facilitates settings on the menu levels Then save your settings by pressing the ESC CUR key LANGUAGE SOFTWARE VERSION CONTRAST INCREMENT 100 OR 1 3 0 Information on operation 110 3 1 Monitoring and diagnosis Display The dot matrix LCD display is integrated into the cabinet of the solar inverter so that it is easily visible The display consists of 16 characters and 2 lines The top line 1 shows the current feed in power of the solar inverter The bottom line 2 outputs operating data The data can be displayed in the German or English language AC voltage DC voltage Daily yield in Wh Total yield in kWh Irradiation in W m2 PV generator temperature in C TEMP PAN Time if the optional irradiation sensor with integrated temperature sensor is connec ted 111 Data memory Your solar inverter is equipped with an internal data memory as standard This data memory provides you with a detailed view of the mode of functioning and the relevant values of your solar power supply at all times You can access these data with the help of the NT Monitor software described below The following measured values can be determined DC voltage AC voltage and AC current power calcu lation Irradiation and module temperature if a sensor is connected Time and date The following values can be accumulated stored and suc
12. 3 5 D 78467 Konstanz Type Sunways NT 6000 NT 4000 NT 2600 From date of manufacture 2003 05 15 Applied standards Standard EN 50178 Title Electronic equipment for use in power installations Edition 1998 Explanation This product is a component intended for further assembly Due to the features resulting therefrom the product cannot initially meet requirements made of finished products machines or plants It must thus be used for mounting assembly only An evaluation of electrical and mechanical safety and of environmental conditions e g extrinsic objects and or humidity must be performed after mounting assembly in the finished plant The EMC characteristics of this product can change in a mounted assembled state An EMC check must thus be made for the PV System by the manufacturer of the PV System Konstanz 2004 08 05 M City Date Roland Burkhardt Declaration of Conformity as defined by the EMC guideline 89 336 EWG with revisions 91 263 EWG and 93 68 EWG We herewith declare that the following product has been manufactured according to the requirements outlined in the EG requirements on 89 336 EWG EMC guideline with revisions 91 263 EWG Product Solar Inverter Manufacturer Sunways AG Photovoltaic Technology Macairestr 3 5 D 78467 Konstanz Type Sunways NT 6000 NT 4000 NT 2600 from date of manufacture 2003 05 15 applied standards Standard EN 50082 2 EN 61000 4 2 4 3 4 4 4 6 4 8 EN
13. S 232 and RS 485 The standard communication interface is the RS 232 interface which is installed in all current PCs and notebooks This inter face allows you to establish contact with your PC immediately using a connecting cable The use of more than one solar inverter or cable lengths of more than 50 m requires the use of the RS 485 interface The connections for the RS 232 or RS 485 interface supply cable are also made via circuit board terminals and via the M12 screwed cable glands in the cabinet A 3 core cable is used for signal transmis sion via the RS 232 and a 2 core cable for the RS 485 interface Top figure RS 232 and RS 485 interfaces with the signals from left to right RS 485 RS 485 RS 485 RS 485 GND G TX RX GND G TX 2 RX 2 Attention RS 485 and RS 485 are dupli cated This means that the cable entry and exit are additionally clamped 100 101 Connection Remove the cover of the solar inverter before connecting an interface cable Pay heed to all safety hints Pages 90 and 91 You will find the necessary cable terminal block with the RS 485 RS 485 GND G TX RX TX 2 RX 2 connections on the board in the centre bottom left see figure on the left Note the following terminal configuration RS 232 GND RX TX RS 485 RS 485 RS 485 The remaining signals TX2 and RX2 are only for service purposes Use a small screwdriver Press the orange termina
14. S 485 and RS 232 interfaces The two RS 485 and RS 232 interfaces installed as standard serve for communi cation with the solar inverter and the PV system The system can be visualised via the Sunways NT Monitor software Sensor interface An irradiation sensor with integrated temperature sensor can be optionally con nected to the relevant interface This allows first time users to quickly grasp the mode of functioning of their PV system and facilitates monitoring of the PV system for professionals AFI universal sensitive residual current device The universal DC and AC sensitive residu al current device AFI monitors the solar system for residual currents To do this it disconnects the solar inverter from the grid by means of a relay as soon as a resi dual current occurs on the PV generator side or on the AC side in the solar inverter After cutoff by the relay and as soon as the residual current has stopped the AFI automatically attempts to reconnect the solar inverter to the grid The AFI of the Sunways solar inverter complies with standard DIN V VDE V 0126 1 1 In addition the AFI of Solar Inverters NT 2600 NT 4000 and NT 6000 has an absolu tely time independent effective value 136 cutoff threshold which is dependent on the performance class The NT 2600 model is switched off at an absolute residual cur rent of 130 mA the NT 4000 model at an absolute residual current of 200 mA and the NT 6000 model at an
15. The maximum DC voltage has been exceeded Too many modules are con nected in series Remedies The installation location is not suitable Please find another installation location Clean the solar inverter if dirt is impeding the cooling unit Remove the objects Check the dimensioning of your PV generator Reduce the number of modules and re commission the system Fault display Causes UAC_1 grid voltage is too low UAC 3 or too high AC under over voltage The cable cross section in the AC feed line to the solar inverter is too small Your solar system feeds into a spur line which is inade quately dimensioned Remedies The solar inverter monitors the limits of the minimum and maximum permissible 3 phase grid voltage If the values exceed or fall below these limits Umin 184 V Umax 264 V the solar inverter swit ches off and only restarts automatically when the voltage value has returned within the limits The fault cut out can be triggered even if the values only exceed or fall below the limits very briefly up to ca 1 ms Ask your electricity board about grid stability and design Check the format of your grid connection energy counter and the grid feed in point to your electricity board 128 129 Fault display AFI Residual current Incorrect time date are stored in Sunways NT Monitor with incorrect time data Causes The AFI error is displayed if
16. absolute residual current of 300 mA The AFI triggers within 0 2 seconds MPP control The solar inverter has a rapid MPP control which maintains the MPP point with a very high adaptation efficiency If surplus power is provided by the PV generator the solar inverter limits this by shifting the working point of the characteristic curve of the PV generator so as not to exceed the maxi mum permissible AC feed in power in accordance with VDEW 137 Block diagram um m T DC FILTER CAPACITIVE STORAGE PV GENERATOR TEMP CONTROLLER Ihre ips Use DIFFERER MEASUREMENT CONTROL RADIATION DATAPRO AND TEMPERATURE DE IRRADIATION SENSOR AND TEMPERATURE SENSOR OPT MICRO CONTROLLER E qii m GRID PROTECTION AFI RESIDUAL CURRENT AND CESSING LCD DISPLAY GRID 2 LINES KEYBOARD L1 L2 LE N PE DC AC Technical data Recommended PV generator power Rated input power Stand by consumption Night time consumption AC energy generated from Nominal voltage Umpp voltage range Open circuit voltage Switch on voltage Switch off voltage Maximum current Nominal current Number of inputs Maximum efficiency European efficiency weighted HERIC topology Rated continuous output power Pn Maximum power Pp Nominal frequency Grid voltage Grid voltage tolerance range Nominal current Max current Distortion factor at Pn Reactive p
17. by a rapid MPP control which maintains the MPP point with a very high adaptation efficiency DC and AC filters The DC and AC filters are specially designed EMC filters which are integrated as direct components on the board They guarantee compliance with the EMC limit values on the AC side and on the PV generator side High frequency emissions are avoided by the filters on the PV generator side Differential measurement The generator current and the voltage are recorded via a current transformer and a differential measurement The values are important input values for the regulation and setting of the correct working point Solar inverter with HERIC technology The heart of the solar inverter with the power semiconductors serves for conver sion of the current from direct into alternating current Peak efficiencies are achieved thanks to the HERIC techno logy The switching frequency PWM is 16 kHz Grid protection The grid protection is a powerful relay which ensures reliable grid disconnection in the case of error and for night switch off This relay fulfils the requirement for trouble free grid disconnection Microcontroller As well as system management the efficient microcontroller undertakes additional tasks such as saving data and communication LCD display Important information for the operator about the system operation and status is displayed on an LCD display of 2 x 16 characters R
18. cessively overwritten 15 minute values for AC current DC and AC voltages irradiation and temperature 120 times storage of 15 minute average values in the recirculating storage storage depth three days on average then overwriting of values Storage of accumulated daily work in Wh and of 40 daily values in the recircu lating storage and successive overwriting of values Storage of accumulated monthly work in kWh and of 13 monthly values in the recirculating storage then overwriting of values Storage of faults with max ten values then successive overwriting of values Please note that all displayed performance data are displayed with a nominal measu ring accuracy of maximum 5 96 The energy counter of your EVU should be used as absolute reference for the fed in energy 112 113 General information The Sunways NT Monitor visualisation soft ware was developed for PV system monito ring and configuration of the solar inverter using PC It is contained on the enclosed CD and can also be downloaded free of charge on the Internet from www sunways de System prerequisites are Intel Pentium from 100 MHz or higher Microsoft Windows 95 98 2000 NT Atleast 6 MB free hard disk storage space At least 16 MB main memory VGA monitor with at least 800 x 600 120 dpi resolution All measured values can be transferred to a PC and visualised with the Sunways NT Monitor software Online fault minute daily and monthl
19. cleaning Before cleaning disconnect the system from the power grid by opening the grid breaker main fuse and open the DC switch on the PV generator in order to exclude the danger of electric shocks Use a soft dry cloth to clean the system Never use corrosive solvent containing or abrasive cleaners or polishes 2 2 Installation The solar inverter must be installed by a trained qualified electrician A special tool is necessary for installation Please read this chapter very carefully Warm Air 150 mm E Iz um 150 92 93 Requirements on the place of installation Mechanical bearing capacity During installation please bear in mind that the solar inverter weighs 26 kg The installation base must be firm and capable of continuously bearing the weight Thermal interaction The installation base must consist of flame retardant material e g no wood or plastic in the base concrete and brickwork are suitable as the heat sink emits tempe ratures up to max 85 C A minimum distance of 300 mm must be maintained above and below the cabinet and 150 mm on right and left from other units cabinets ceilings cable ducts etc The solar inverter must be installed verti cally so as not to hinder adequate free convection Several solar inverters must not be instal led on top of each other so as to prevent reciprocal heating If installing the solar inverter i
20. e cable cannot exert any mechanical force on the circuit board terminal 96 97 PV generator connection Preparation Execute the DC cabling according to your electrician s system dimensioning Check each PV string for correct functioning by performing a no load voltage current and short circuit current measurement To achieve the necessary protection against hazardous contact voltage during the installation of PV systems the positi ve and negative conductors must be kept separate from the ground potential PE Contactable conductive parts of the PV generator e g metal frame supporting structure etc must be earthed connec ted to PE Check that the generator is free from ground faults Make the electrical connection to the solar inverter Connection The PV generator is connected via the externally accessible shock proof TYCO SOLARLOK connectors which are enclosed with the delivery The TYCO SOLARLOK connectors are designed for a cable cross section of 4 mm2 and must be crimped see data sheet and connector assembly with TYCO crimping tool on page 144 Connect the two right DC female connectors with the two left DC female connectors with of the PV generator see figure below Important information The direct PV generator voltage is availa ble internally after connecting the PV generator to the solar inverter via the DC connectors and switching on the PV generator swi
21. ecified Please preserve the original packing even after expiry of the warranty period Carriers may only accept solar inverters in transport safe original packing Therefore please inform us before collection if you have lost the original packing We will gladly provide you with new packing for a charge 130 131 Exclusion of liability Warranty claims and liability are excluded for direct or indirect damages due to Interventions modifications or attempted repairs Inadequate ventilation Force majeure e g lightning strike water damage vandalism fire overvoltage thunderstorms etc Inappropriate transport Non observance of pertinent regulations or incorrect installation or commissioning Leakage of overvoltages from the varis tors on the DC side on the PV generator More extensive or other claims for direct or indirect damages particularly claims for damages including those arising from positive contract violation are excluded unless legally prescribed 4 0 Appendix 132 133 Designation AC AFI RCD DC EMV EB Iupc kW LCD MPP Description Alternating Current grid current Operator protection in the event of residual currents AFI Universal Sensitive Residual Current RCD Residual Current Device Direct Current PV generator side of the solar inverter Electromagnetic Compatibility Electricity Board Current used to operate the solar inverter Iden
22. ect the operation of the system over the desired period of use This applies particularly for the usability of the seals and crimping of the contacts The utmost care must therefore be taken to work cleanly during installation Different circular contacts are used for different conductor cross sections for the TYCO SOLARLOK connectors The correct tool insert must be used depending on this cross section The enclosed TYCO SOLARLOK connectors are equipped with circular contacts for a cable cross section of 4 mm The enclosed seals have internal dimensions of 6 for cables of 5 3 to 6 2 mm sheath diameter and 8 mm for cables of 7 2 to 8 0 mm sheath diameter The seal must be matched to the sheath diameter of the cables used The following sequence must be observed for assembly of TYCO SOLARLOK connec tors 1 Strip the voltage free cable by 8 mm 2 Crimp on the circular contact 3 Push the cable gland clamping piece and seal onto the cable 4 Engage the contact in the connector housing 5 Screw on the clamping nut 6 Tightening torque of the threaded cable gland is 1 5 Nm Declaration of Conformity as per EG Low Voltage Guidelines 73 23 EWG attachment Ill B We herewith declare that the following product including the required accessories has been manufactured according to the EG guidelines 73 23 EWG and 93 68 EWG Product Solar Inverter Manufacture Sunways AG Photovoltaic Technology Macairestr
23. er nal L1 must have 5 wires L1 L2 L3 PE N Cable cross sections of 5 x 4 mm2 are recommen If several solar inverters are operated in ded parallel the feed in phase L1 of the unit must be evenly distributed over grid The solar inverter is connected to the phases L1 L2 and L3 see figure below supply grid via the circuit board terminals inside the unit Three phase grid connection distributed over three units ooooQ ooooQ0 ooooQ0 L1 N L2 L3 PE L1 N L2 L3 PE L1 N L2 L3 PE You must use adequately dimensioned cable cross sections in order to avoid a considerable increase in the grid impedan ce between the domestic distribution and the solar inverter The terminal range of the AC terminals is 0 5 to 6 mm2 for rigid cables and 0 5 to 10 mm2 for flexible cables With a high grid impedance i e with a long line or too small a cross section the voltage increases at the grid terminal during feed in If the terminal voltage exceeds the per missible value the solar inverter is discon nected from the grid Carefully perform the following steps Check that there is no voltage before introducing the supply main into the unit Lead the 5 core AC cable outer diame ter 9 17 mm through the M25 threa ded cable gland Connect cables L1 L2 L3 PE and N to the relevant circuit board terminal with the help of a slot head screwdriver see figure below Tighten the M25 screw connection so that th
24. iption Functional principle and explanations Block diagram Technical data TYCO SOLARLOK connectors Conformity and safety declarations General exclusion of liability rights registered trademarks 1 0 General information 82 83 The User Manual contains safety hints These are identified by a triangle with an exclamation mark General safety information All safety hints contained in this section and throughout the User Manual must be complied with at all times to guarantee the user s safety The described product must not be operated if any mechanical or electrical components are defective Before commissioning the system we strongly advise you to carefully read and heed the instructions Non compliance can have serious consequences for exam ple damage to the unit or other property or physical injuries with possible loss of life The solar inverter must be installed by a trained qualified electrician The electrici an must be approved by the competent electricity board EB The relevant tasks to be carried out are identified by an additional adjacent symbol in the respective chapter headings Opening the unit Before opening the cabinet the unit must always be disconnected from the grid and from the PV generator The unit continues to conduct a hazardous voltage internally and at the connection sockets for ca five minutes after disconnec ting from the PV generator The energy storage capacitors
25. l The terminal will open Insert the cable stripped to a minimum of 11 mm into the respective terminal hole Release the screwdriver The cable is fixed in the connection Once again check that the cable connec tion is firmly located Seal the unrequired cable glands by placing a spare piece of cable in the gland hole and tightening with the screw clamp Please heed the description on the Sunways NT Monitor software in Chapter 3 2 Connecting the sensors Optional irradiation sensor The optional addition of an irradiation sensor type Si 01TC T from Ing B ro Mencke amp Tegtmeyer with integrated PT 100 temperature sensor for tempera ture measurement enables recording of the irradiation data and the correspon ding module temperature in the cycle of the internal data memory This additional measuring unit helps with analysis of the system On the basis of the values possible errors in the PV generator such as e g shading or failure of solar cells can be detected For demonstration purposes the irradia tion sensor and the corresponding data can be used to show how a PV system functions In conjunction with the Sunways NT Monitor visualisation soft ware the stored data can be displayed Before you connect an irradiation sensor you must remove the cover of the solar inverter Pay heed to all safety hints on pages 90 and 91 Please note that the inputs and outputs are not short circuit resistant
26. n a switch box ensure adequate heat dissipation The ambient temperature must not fall below or exceed 25 C or 40 C The solar inverter should not be exposed to direct solar irradiation so as to protect it from unnecessary external heating Protection from damp and foreign bodies The IP54 high protection class permits instal lation both inside and in roofed outdoor areas but the solar inverter must not be exposed to direct rain Make sure that the solar inverter cannot be exposed to foreign bodies deposits of dust and dirt Electrical connection and cable entry If the solar inverter is fixed to the installa tion frame the electrical connection can be led through The unit may only be ope ned by a qualified electrician The cabinet cover must first be released and removed For installation please observe the The following cable inlets are located on instructions in the Setup leaflet the underside RS 232 RS 485 Irradiation sensor with inte grated temperature sensor AC wiring loom DC DC DC DC cable L1 L2 L3 N PE Sunways AG Solar Inverter Fig Inlets on the unit underside Grid connection As line safety element in the grid feed in direction we recommend a 3 x 25 A auto matic cut out No consumption units must be connected to the feed line from the solar inverter to the automatic cut out The solar inverter only feeds in via termi The grid connection of the solar invert
27. n the Minute values key The data and values are graphically visualised by clicking on the Graphic representation key You can call up Daily values and Monthly values in the same way by clicking on the respective keys Exit the window with the Close key You will return to the Settings menu Help menu You will find further helpful information on operating the Sunways NT Monitor software in the Help menu 124 125 Your solar inverter operates fully automati cally and maintenance free However if operational faults occur due to external or internal causes these will be displayed on the screen AC over undervoltage 3 phase Your solar inverter monitors the limits of minimum and maximum permissible 3 phase grid voltage If these limits are exceeded Umin 184 V UN 230 V Umax 264 V the solar inverter will switch off and will only start up again when the voltage value is within the limits The fault cut out can be triggered even by very brief overvoltages and undervoltages Display for AC overvoltage Display for AC undervoltage AC over undervoltage 1 phase Your solar inverter monitors the limits of minimum and maximum permissible grid voltage in the feed in phase If these limits are exceeded the solar inverter will switch off and will only start up again when the voltage value is within the limits Display for AC overvoltage Display for AC undervoltage DC
28. ocally This signal is converted by the interface converter into the RS 232 signal from where it is led to the modem using cable type C Jumper JP400 must be closed at the solar inverter that is furthest away from the interface converter For all other solar inverters it must be open An address must be alloca ted to enable identification of the indivi dual solar inverters This is described in Chapter 2 3 Commissioning under Configuration In order to connect several solar inverters to the remote monitoring the interface converter is connected directly to a modem via RS 232 Jumper JP400 is connected to the solar inverter that is furthest away from the interface conver ter It must be open for all other solar inverters Stripped length 11 mm Jumper JP400 see above Configuring the interface cables Cable type A Female 6 m connector to PC 7 igna cables 9 pole 8 3 RX to the solar inverter 9 4 400 5 GND Cable type B RX Signal cables to modem 9 pole to solar inverter 400 GND won a r x 121 Locating jumper JP400 in the Sunways Solar Inverter Please check the correct position of jum per JP400 depending on your selected communication circuit You will find this jumper above the communication connec tions see figure opposite Sunways NT Monitor data acquisition Online values DC voltage U DC AC voltage
29. of the cooling element DC overvoltage AC undervoltage overvoltage In the event of a fault the conversion is immediately blocked and the grid relay disconnected In addition the following protective devi ces are provided on both grid and PV generator side Grid side varistors Protect the power semiconductors from high energy time limited voltage spikes on the grid and provide for a reduction of energy in the throttle in the event of grid disconnection Generator side varistors Thermally monitored varistors provide pro tection against atmospheric overvoltages e g due to remote strikes during storms 88 89 2 0 Information on installation Electrical safety Before opening the cabinet the solar inverter must be disconnected from the grid and from the PV generator The solar inverter continues to conduct a hazardous voltage internally and at the connection sockets for the PV generator for ca five minutes after disconnecting from the PV generator The energy storage capacitors are only fully discharged after this period After disconnecting the solar inverter from the grid and PV generator you must wait at least five minutes before opening the solar inverter Mechanical safety During installation make sure that the cables or connection lines fitted to the solar inverter are securely laid and that suitable mechanical cable supports cable ducts etc are used 90 91 Information on
30. on threephase RCD universally sensitive current source 16A 3 1 RS 232 RS 485 irradiation temperature LCD 2 16 characters IP 54 95 per cent free convection 25 to 40 C 510 x 300 x 180 mm 26 kg silent 35 dB A 5 years 10 years 142 threephase RCD universally sensitive current source 25A 3 1 RS 232 RS 485 irradiation temperature LCD 2 x 16 characters IP 54 95 per cent free convection 25 to 40 510 x 300 x 180 mm 26 kg silent 35 dB A 5 years 10 years threephase RCD universally sensitive current source 25A 3 1 RS 232 RS 485 irradiation temperature LCD 2 x 16 characters IP 54 95 per cent free convection 25 to 40 C 510 x 300 x 180 mm 26 kg silent lt 35 dB A 5 years 10 years TYCO SOLARLOK connectors The TYCO SOLARLOK connectors are only approved for connection to permanently laid cables They must not be disconnected under load The circuit must be interrupted at a suitable point The cables must be provided with a suitable adhesive label close to the TYCO SOLARLOK connector The TYCO SOLARLOK connectors must always be disconnected from other voltage sources on all sides during assembly in order to protect against electric shock Fig Manual crimping tool for assembly of TYCO SOLARLOK connectors 144 145 Any type of soiling dust humidity etc will negatively aff
31. or connection and grid feeding in parallel of in plant generation on low voltage guidelines VDEW 4 Edition 2001 We herewith declare that the following product has been manufactured according to the requirements outlined in the guidelines for connection and grid feeding in parallel of in plant generation on low voltage guidelines Product Solar Inverter Manufacturer Sunways AG Photovoltaic Technology Macairestr 3 5 D 78467 Konstanz Type Sunways NT 6000 NT 4000 NT 2600 From date of manufacture 2003 05 15 Applied standard Standard Title In plant generation on low voltage guidelines Edition 4 Edition 2001 Explanation The NT series of solar inverters from Sunways are monophase inverters that are not capable of isolated operation They are equipped with a voltage monitor and three phase monitoring of the line voltage for undervoltage in accordance with section 2 4 2 of the VDEW Guideline 4th edition 2001 A constantly accessible isolation point is therefore not required see section 2 1 2 Switching point with isolating function Observation of the cut off values of the threephase undervoltage protection is undertaken by means of a routine check test on each device Konstanz 2004 08 05 y 149 City Date Roland Burkhardt General exclusion of liability Although the accuracy and completeness of the information contained in these instructions have been checked with the utmost care no liability can be accepted for
32. overvoltage A maximum no load voltage of 750 V is permitted for the PV generator All components of the DC input are ade quately dimensioned with a safety factor If the threshold is exceeded the solar inverter stops the feed in and a DC over voltage error is displayed Display for DC overvoltage residual current The AFI residual current insulation error ground fault is displayed if a residual current has occurred in the PV system and the solar inverter has subsequently discon nected from the grid Ground faults are monitored on both the AC and DC side universal current sensitive If this error message is displayed the entire PV system must be checked for insulation errors The AFI residual current operated device only monitors the phase into which feed in occurs Display for AFI error protection Overheating fault Your solar inverter is designed for an ambient temperature of up to 40 C When the maximum upper temperature threshold is reached the feed in is stop ped When the heat sink temperature has decreased the solar inverter starts up again automatically 126 127 3 4 Fault diagnosis Fault display Overtemperature UDC Overvoltage Causes The maximum permissible ambient temperature of 40 C has been exceeded The necessary air circulation was not taken into account during installation Objects have been stored on the heat sink impeding free convection
33. ower factor cos phi Output current Solar Inverter NT 2600 1500 bis 2750 W 2300 W 9 W lt 0 005 W 15 W 400 V 350 lt U pp 650 V 750 V 410 V 340 V 7A 5 75 A 2 with adapter 4 97 per cent 96 5 per cent yes 2200 W 2200 W 50 Hz 0 2 230 V 20 to 15 per cent 9 6A 9 6 A lt 3 per cent 1 sinusoidal 140 141 Solar Inverter NT 4000 2000 bis 4125 W 3400 W 9 W lt 0 005 W 15 W 400 V 350 lt U pp 650 V 750 V 410 V 340 V 10 8 5 A 2 with adapter 4 97 per cent 96 4 per cent yes 3300 W 3300 W 50 Hz 0 2 230 V 20 to 15 per cent 14 3 A 14 3 A lt 3 per cent 1 sinusoidal Solar Inverter NT 6000 4000 bis 6250 W 5200 W 9 W lt 0 005 W 15 W 400 V 350 lt U pp 650 V 750 V 410 V 340 V 15A 13A 2 with adapter 4 97 per cent 96 3 per cent yes 4600 W 5000 W 50 Hz 0 2 230 V 20 to 15 per cent 20A 21 7A lt 3 per cent 1 sinusoidal Grid voltage monitoring Earth fault protection Output characteristic Grid connection fuse layout Required number of grid connection phases Number of feed in phases 230 V single phase Data interfaces Sensor interfaces Display System of protection against envir influences Relative air humidity max Cooling Ambient temperature Celsius Dimensions height x width x depth Weight Noise development Standard warranty period opti
34. solar inverter is to be completely disconnected e g removal from the PV system reconfigured or extended the cabinet cover must be removed Pay heed to all safety hints Pages 90 and 91 Open the main switch for the PV DC voltage and the mains fuse as described above After a waiting period of at least five minutes the solar inverter will be voltage free Disconnection of the PV generator by removing the TYCO SOLARLOK connectors must never be performed under load In the event of non compliance the connec tors could be damaged by a strong electric arc In this case the relevant connectors must be replaced Remove the cabinet cover Check that the grid connection terminals are voltage free Configurations The solar inverter is basically configured with the Sunways NT Monitor program using a laptop or PC see enclosed CD In this regard please read the chapter System Monitoring and Diagnosis and Sunways NT Monitor However language setting LCD contrast and total energy offset only to be used in the event of replacement must be configured directly on the unit If you wish to configure the solar inverter without an external laptop or PC or to change the language setting please follow the instructions below Disconnect the solar inverter by isolating the mains fuse from the grid The direct configuration of the solar inverter occurs with PV operating voltage present Please note that the unit is
35. talled in the solar inverter it must be initialised using a PC and the Sunways NT Monitor software Connect the powered remote modem to the PC via the COM port Use the inter face cable provided with the modem for this purpose Start the Sunways NT Monitor and set Acer Modem under the Settings Remote Modem menu Click Perform initialisation and wait until the scroll bar has come to an end The modem can now be switched off and connected to the solar inverter via the RS 232 interface Attention Do not initialise the local modem The remote modem is now initialised so that it automatically accepts a connec tion after two rings and connects at 9600 Baud 114 Connection and circuitry options Individual PV system with maximum distance of 50 m between solar inverter and INVERTER 1 Connection to PC via RS 232 A single solar inverter can be directly connected to a PC via the RS 232 interface Stripped length 11 mm Jumper JP400 open 1 This connection can be used to read out an individual solar inverter if the distance from the PC used does not exceed 50 m To do this cable type A is stripped to 11 mm and connected to the solar inverter 2 Individual PV system with modem for remote inquiry INVERTER 1 Connection to modem via RS 232 Green Yellow Brown COO eue
36. tch Please note that the input capacitors are still charged even after switching off the PV generator switch or removing the PV generator plug connection After disconnecting the AC and DC side the solar inverter still conducts voltage for up to ca five minutes Therefore wait for at least five minutes until the internal voltage has dissipated Then you can work on the terminals Please note the general safety informa tion on pages 83 and 84 98 99 The DC voltage can be up to 750 V The unit may only be opened by a qualified electrician Always disconnect the PV generator side first by opening the PV generator switch and then the grid connection by isolating the relevant mains fuse If you do not have a PV generator switch in your PV system you must disconnect the grid connection first of all by isola ting the relevant mains fuse However a grid error will be entered in the error memory of the solar inverter Disconnection of the PV generator by removing the TYCO SOLARLOK DC con nectors must never be performed under load In the event of non compliance the connectors could be damaged by a strong electric arc In this case the relevant con nectors must be replaced Communication connections Via the communication connections inter faces operating data can be retrieved from the data memory with an external computer and specific operating settings made Two interfaces are available R
37. this case there is a maxi are connected together via the RS 485 117 mum cable length of 500 m between interface The signal is looped through all units Two The interface converter generates an RS 485 terminals and two RS 485 RS 232 signal It is connected to the PC with terminals are located on each terminal the standard modem cable type D Jumper block This means that the signal can be led JP400 must be closed at the solar inverter into the solar inverter at one terminal and that is furthest away from the interface out of the solar inverter at the other termi converter For all other solar inverters it nal The RS 485 signal is led out of the last must be open An address must be alloca solar inverter in the series into the interface ted to enable identification of the indivi converter using the following configuration dual solar inverters This is described in RS 485 to DATA and RS 485 to Chapter 2 3 Commissioning under DATA Configuration 4 PV system for 2 to 99 solar inverters with interface converter IC and modem for remote inquiry INVERTER 1 oe OY EO g gt zo 118 119 IE le le JO RX O TX2 20 RX2 0 RS 485 RS 485 O GND_G mO O 4 If several solar inverters be con nected to the remote inquiry then the individual inverters are connected together by means of the RS 485 signal as when reading out several units l
38. tification of class of protection against external environ mental influences penetration of water and mechanical foreign bodies Kilowatt Liquid Crystal Display Maximum Power Point Designation Grid impedance Pupc Pnac PT PV PV generator switch Unoc Description AC resistance of grid impedance DC and AC rated power Power which the inverters can permanently consume DC or emit AC Temperature sensor Photovoltaic DC load break switch to cut off the PV generator from the solar inverter Voltage specifies the normal operating voltage at which the solar inverter is operated 134 135 Functional principle and explanations The electrical energy of the PV generator is buffered by a capacitive storage from where it is fed into the public grid via a solar inverter synchronised with the grid with an ideal phase angle of cos phi 1 A sinusoidal current with a very low harmo nic distortion is injected into the public grid by the current injection inductor This improves the grid quality Thanks to the HERIC technology patent applied for in the self commutated Sunways Solar Inverter the hysteresis losses in the current injection inductors that occur in conventional solar inverters and the switching losses in the semiconductors are considerably reduced Consequently Sunways Solar Inverters achieve a peak efficiency during conversion The concept of the Sunways Solar Inverter is completed
39. under DC voltage for configurations via the keys Danger to life Please observe all essential regulations for Working under voltage 106 This is the only exception for which work Address of the solar inverter address may be performed on the open unit under 1 is stored in the memory at the voltage factory In the case of several solar inver ters consecutive numbering must be set Remove the cabinet cover to carry out the For three solar inverters e g the addres configuration ses 1 2 and 3 Date The following settings can be performed Time using the illustrated keys Language German or English PLUS MINUS UP DWN RST g ore IG 2e mt Cl gt C107 re TICON 9 107 Fig The setting ica are located beneath the display Use insulating material to press the keys resets the data recording program to its e g a plastic rod Avoid direct contact original status This does not affect the with the printed circuit board so that the operation of the solar inverter electronics cannot be damaged by electro static charging The reset key RST only Starting from the current display on the Structure and menu levels for configuration PERFORMANCE AND OPERATING DATA SOLAR INVERTER ADDRESS ADDRESS URSI START gt D e e eo screen you can reach the next menu level with the UP DOWN key The illustrated structure
40. ward alignment of the modules You will obtain maxi mum yield in Central Europe with a module inclination of 30 to the hori zontal and a direct southerly alignment of the generator field The output of the cells decreases as the module temperature increases Install your PV generator with adequate rear ventilation Check your PV generator for soiling ca every three years This occurs particularly at the lower edge of the modules and forms a film which even heavy rain can not wash away Decreases in yield can be prevented by cleaning with a wet cloth or a brush Avoid shading of individual modules solar cells in your system This can result in heavy losses in yield 86 Standard components of a PV system Depending on the recommendations of your electrician your PV system will con sist of the following components Standard components of the PV system 1 PV generator switch 2 Irradiation sensor with integrated temperature sensor 3 Mains fuse 4 Energy meter un zt gt gt 72 PV generator switch Designed as DC load break cut out to cut off the PV generator from the solar inverter Dimensioning min 800 V gt 16 A Grid connection 3 phase Feed in 1 phase grid monitoring 3 phase 87 Protection concept The following parameters are monitored continuously and in parallel by the micro controller and displayed on the screen AFI error ground fault Overheating
41. y values are available For connecting to your PC Sunways solar inverters in the NT series are equipped with the RS 232 and RS 485 interfaces as stan dard In the case of larger distances bet ween PV system and PC the data can also be transferred via a modem We recom mend using two external analogue modems made by ACER If other modems are used the functional reliability cannot always be guaranteed The modem remote modem installed in the solar inverter must be initialised prior to installation with the help of the Sunways NT Monitor software Note the Help function in the program in this regard The second modem local modem is connected to the RS 232 interface of your PC This modem must not be initialised Different interface cables are required depending on the type of connection These are included in the accessories Up to 99 solar inverters can be monitored and read out by means of a connection via the RS 485 interface If the data are read out via the RS 485 interface and converted to RS 232 with an interface converter we recommend the converter type l 7520 Converter from ICP Deutschland available from your specialist dealer which will guarantee reliable data transfer The addresses of the solar inverter must be input in the solar inverter using the Sunways NT Monitor software or input directly with the keys illustrated on page 107 Initialising the remote modem If a remote modem is ins
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