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Installation 5

1. 00 0090090 0000090 000000 0090090 009090 00090090 0090090 0o00 The current of each array must fall within the limits of the inverter To work the inverter must be connected to the national electricity grid since its opera tion can be equated to a current generator that supplies power in parallel with the grid voltage That is why inverters cannot support the grid voltage islanding 21 000012CG AN POWEr ONne A Renewable Energy Solutions Characteristics 2 Description of the equipment This equipment is a multi string inverter that converts direct electric cur rent from a photovoltaic generator into alternating electric current and feeds it into the national grid Photovoltaic panels transform energy from the sun into direct current DC electrical energy through a photovoltaic field also called photo voltaic PV generator in order to use it it is necessary to transform the type of alternating current into AC This conversion known as DC to AC inversion is made efficiently without using rotating parts and only through static electronic devices In order to allow inverter operation in safe thermal and electrical condi tions in the event of adverse environmental conditions or unsuitable in put voltage values the unit automatically reduces the value of the power fed into the grid This way the solar energy system compensates fo
2. Fe OMS CIN CK Selena x US QUU Epub MEO SE Installations above 2000 metres eese nnns Sh i eg eite uM ac ud S tom naa LUE Taie aro riore eee Operations preparatory to PV generator connection Checking the correct polarity of the strings Checking of leakage to ground of the photovoltaic generator Requirements of the PV generator a I aaa Choice of differential protection downstream of the inverter lliverter Combone llle uuu EEG E PUER E Aaaama Grounding configuration of the DC inputs Input connection to the PV generator DC side Procedure for installing quick fit connectors l T Grid output connection AC side Characteristics and sizing of the line cable l l T Load protection switch AC disconnect switch sese Connection to the AC side terminal board esee Main efe er Connections of the signals to the
3. NI P o AV 13H Ov 2Q SdYD YAWYOSSNVYL 00 0 dH TaT1vuvd digo YALYAANI dd L lt lt I S c ONN ANY I 0 C ONN dO 12O 18 NOISUu3A GYVGNVLS L a C INI 9 INI HULNI 97960000 000057AG AN POWEr ONne A Renewable Energy Solutions Characteristics 2 Protective devices Anti Islanding In the event of a local grid outage by the electricity company or when the equipment is switched off for maintenance operations the inverter must be physically disconnected safely to ensure protection of people work ing on the grid all in accordance with the relevant national standards and laws To prevent possible islanding the inverter is equipped with an automatic protective disconnection system called Anti Islanding Ground fault in the photovoltaic panels An advanced ground fault protection circuit continuously monitors the ground connection and disconnects the inverter when a ground fault indi cating this condition by means of the red GFI LED on the LED p
4. 65 Specifications on the behaviour of the LEDS l 66 uS 2 66 Descnpion OF the MENUS scere per bip 67 JSing ne panel DUUONS u uuu uuu se l 6 BEAU SUS T N u EE 68 syn Ee HIS RU ERROR 70 l OI TNL ais cecil A 76 H l pn RETIRER 77 erre deem unun 77 Routine MANNS IAIN B 18 Special IRalbite dll OG LLL UU 18 Q 19 Verification of ground leakage ll a a u uu uuu u uu 85 Behaviour of a system without leakage l sess 05 Behaviour of a system with leakage cccccccscscsssscssssesssssessessssessessesesessesasseesessesrsensen 06 Measuring the insulation resistance of photovoltaic generator 07 Storage and dismantling 88 Storage of the equipment or prolonged stop I I 88 Dismantling decommissioning and disposal a a 88 000050BG PowWer one Introduction and general information A Renewable Energy Solutions Reference number index 01 bracket 02 inverter 03 locking screw 04 front cover 05 main board 06 service cable glands 07 DC disconnect s
5. After undergoing preliminary checks and as such having verified that there are no problems in the photovoltaic system you can connect the inverter to the inputs To prevent electrocution hazards all the connect operations must be carried out the DC disconnect switch 07 or the external disconnect switch open and locked For the string connections it is necessary to use the quick fit connectors multicontact or weidmuller located on the bottom of the mechanism The maximum numbers of input strings which can be connected is 2 Connect all the strings included in the design of the system and always check the tightness of the connectors If some of the string inputs should not be used you must proceed to verify the presence of covers on DC input connectors 10 and then install them should they be absent This operation is necessary for the tight ness of the inverter and to avoid damaging the free connector that could be used at a later date The two pairs of DC input connectors 10 are internally related to a single input channel so there are no preferences on the connectors to be used in the case of installation of a single string 43 000026BG AN POWEr ONne A Renewable Energy Solutions Installation 5 Procedure for installing quick fit connectors On the inverter models that provide quick coupling connectors these can be provided in two different types WEIDMULLER The installation of Weidmuller connector
6. 55BbA E POWER ALARM DOWN ENTER we BEEP f the checking of the grid does not give a positive result the unit will repeat the procedure until all the parameters that allow connection to the grid grid voltage and frequency insulation resistance are within the range During this procedure the green LED flashes At the end of the first starting of the inverter the wiring box must be configured using the dedicated Aurora Manager software The software and relevant manual for carry ing out this configuration are contained in the CD supplied with the inverter 62 000067AG poke ono eion 77 A Renewable Energy Solutions Display access and settings After the commissioning of the inverter it is possible necessary to set the configuration of the inverter by accessing the Account Settings from the display The following are the main adjustable parameters see the section dedicated to the Menu descriptions Address 5485 settings required in the case of system monitoring using the RS485 board Vstart setting required in the case it is requested by the configuration during the system requirement phase Vstart parameter MPPT scan allows you to carry out a search for the maximum power point with sensitivity and adjustable time intervals MPP parameter Analogue inputs setting where present allows you to set the pa rameters of the analogue sensors con
7. 23 Functionality and components of the equipment I a 24 Topographic diagram of the equipment I I n aN 26 POLO CEI dOVICOS 28 Fl ISI 0 28 Ground fault in the photovoltaic panels cceseseccsecsscsessessessecessesseeseeceesseseeseessesseeeeeeen 28 l urther DFOTECIIVE GOVICES 28 000050BG Power one Introduction and general information A Renewable Energy Solutions 3 Safety and accident prevention Safety instructions and general information Hazardous areas and operations Environmental conditions and riskSs l I I a AAS RITE T TIE AZ ANC ME Clothing and protective devices for staff BS CLONAL gt Ke OE IE EFL EEUU T EUER SCIRE INR yan Table of residual risks ll l I mnn 4 LUNG ana ROE General 11 Unpacking and checking List of supplied components c cccccsecssesecsscssssrssresseseecsessecsesseseessesseecaesansatsenseteeesenses selben siquis uuu u sn ass Es 5 InstallatiOn e eere rre rrr tudin q
8. F F Debug EU 54 000064AG AN POWEr ONne A Renewable Energy Solutions Installation 5 The predefined setting is 0 0 and means no grid standard is selected and the display language is English in this case the Set Country mes sage will appear on the display If a position of switches not assigned on the display 12 is selected In valid Selection appears Saving the country standard and language The settings become fixed after 24 hours of operation of the inverter it does not need to be connected to the grid and only needs to be pow ered The time remaining before the settings become fixed can be seen in the dedicated menu and a notice appears if the time has expired Once the settings are fixed turning the rotary switches will produce no effect In this condition only the language can be changed through the dedicated menu At any time and for any reason the ENGLISH language of the display menu can be set by simultaneously pressing the ESC and ENTER buttons for at least 3 seconds If it is necessary to change the standard of the country after the settings have been fixed after 24 hours of operation please contact Power One s technical support de partment with the part number and serial number of the inverter to hand 55 000029AG A N POWEr ONne A Renewable Energy Solutions 6 Instruments General conditions One of the first rules for pr
9. Output Overcurrent IGBT Saturation Internal Error Low Bulk Voltage Bulk ramp timeout Booster module error revealed by Inverter Wrong Input Mode parallel instead of independent Over temperature Bulk Capacitor Fail Inverter module error revealed by Booster Error inside the inverter The alarm is raised when the voltage at the ends of the bulk capacitors exceeds the Over Voltage threshold The alarm occurs when there are communication problems between the control devices inside the inverter The alarm appears when the inverter output current exceeds the output overcurrent threshold of the inverter The alarm appears when one of the active devices of the inverter is in saturation state Error inside the inverter The alarm can be caused by causes external to the inverter a low inverter input voltage just above the activation voltage that is not accompanied by sufficient availability of power from the photovoltaic generator typical condition of periods of insufficient irradiation Error inside the inverter regarding the time for starting steady state operation of the DC DC circuit part Booster Error inside the inverter regarding the operation of the DC DC circuit part Booster The alarm is generated only when the inverter is configured with parallel inputs In this particular configuration the inverter carries out the input voltage check of each of the two channels a
10. TM nn aaa LIA The inverter commissioning procedure is as follows Put the DC disconnect switch 07 in ON position If there are two sepa rate external disconnect switches one for DC and the other for AC first close the AC disconnect switch and then the DC disconnect switch There is no order of priority for opening the disconnect switches When the inverter has power the first check performed is the one rela ting to the input voltage If the DC input voltage is lower than the Vstart voltage voltage required to begin the inverter s grid connection the b14 icon remains off and the Waiting for the sun message is displayed b10 Ifthe DC input voltage is higher than the Vstart voltage the b14 icon is displayed and the inverter goes to the next stage of the controls In both cases the voltage levels and input current are displayed in the b15 and b16 fields The inverter performs a control of grid parameters The b22 icon which represents the grid distribution can have different statuses Not present if the mains voltage results as absent flashing if the mains voltage is present but outside the parameters dictated by the standard of the country of installation Turns on if the mains voltage is present and within the parameters dictated by the standard of the country of installation In this condition the inverter starts the sequence of grid connection This verification can take several minut
11. Val Value of production for the last 365 days calculated with the cur rency and conversion coefficient set in the relevant section of the SET TINGS menu Amount of CO saved over the last 365 days User period This section of the menu allows the statistics for a period selected by the user to be displayed Once the start and end dates for the period have been set the following data are available E Energy produced during the selected period Val Value of production for the selected period calculated with the currency and conversion coefficient set in the relevant section of the SETTINGS menu CO Amount of CO saved during the selected period 69 000068CG poke one 77 A Renewable Energy Solutions Settings menu When SETTINGS is selected from the three main sub menus the first screen for the password is displayed in the display The default password is 0000 This can be changed using the display buttons always following the same procedure Use ENTER to scroll the digits from left to right Use ESC to return to the previous digit from right to left Press ESC several times to return to the previous menus Use DOWN to progressively scroll the numerical scale downwards from 9 to 0 Use UP to progressively scroll the numerical scale upwards from 0 to 9 After entering the password press ENTER to access the information gathered in this section Address This
12. the contact will stay open or closed until the inverter reports an error or a warning out of those selected from the menu once the inverter displays an error or a warning out of those selected the relay switches state and therefore closes or opens the contact The relay remains switched from its rest condition until the alarm or warning has disappeared Crepuscular the relay usually switches when the voltage from the photovoltaic generator exceeds falls below the threshold set for grid connection If the NO or NC contact is chosen the contact will stay open or closed until the inverter has an input voltage higher than the one selected for grid connection The contact remains switched from its rest condition for as long as the inverter is switched on even if not connected to the grid This mode is useful for disconnecting large output transformers that could have unnecessary consumption during the night The device to be connected to the relay can be of different types light sound etc but must comply with the following requirements Alternating current Maximum Voltage 240 Vac Maximum Current 1 Direct current Maximum Voltage 30 Vdc Maximum Current 0 8 A Cable requirements External diameter from 5 to 17 mm Conductor cross section from 0 14 to 1 5 mm 52 000064AG AN POWEr One A Renewable Energy Solutions Installation 5 Remote control connection The connection and disconnection of the
13. 2011 Safety of power converters for use in photovoltaic power systems Part 2 Particular requirements for inverters UNI EN 12198 2 2009 Safety of machinery Assessment and reduction of risks arising from radiation emitted by machinery UNI 9513 1989 Vibration and shock Vocabulary Defines terms relating to vibration and shock 70 1 EN 60529 June 1997 Degrees of protection provided by enclosures IP code UNI 10893 2000 Technical product documentation instructions for use Organization and order of contents UNI ISO 10015 2001 Guidelines for training ISO 7000 DIN 30600 Graphic symbols and signs for function identification UNI 11394 2001 Technical information System for assessing the instructions for use of technical goods 000006DG A N POWEr One A Renewable Energy Solutions Symbols and signs P 7 10 minutes AN AN E Introduction and general information 1 Table Symbols In the manual and or in some cases on the equipment the danger or hazard zones are indicated with signs plates symbols or icons like the CE marking This points out that it is mandatory to consult the manual or original document which must be available for future use and must not be damaged in any way This points out operations or situations in which staff must be very careful respectively Generic hazard or hazardous voltage Th
14. FV IG Once the short circuit has been made measure the insulation resistan ce Riso using a megohmmeter positioned between the two shorted poles and ground of the inverter Inverter TL MODELS transformerless If the measured insulation resistance Riso is less than 1Mohm the inverter does not connect to the grid due to a low insulation of photovoltaic generator respect to ground MODELS with high frequency transformer If the measured insu lation resistance Riso in case of input poles floating respect to ground or QF 1 if the one of input poles is grounded is less than 0 2Mohm the inverter does not connect to the grid due to a low insulation of photovol taic generator respect to ground The insulation resistance is affected by the environmental conditions the PV generator is in E g photovoltaic module wet from dump or rain and therefore the measure ment must be made immediately after the anomaly 87 000039AG AN POWEr ONne A Renewable Energy Solutions Maintenance Storage and dismantling Storage of the equipment or prolonged stop If the equipment is not used immediately or is stored for long periods check that it is correctly packed and contact Power One for storage instructions The equipment must be stored in well ventilated indoor areas that do not have characteristics that might damage the components of the equipment Restarting after a long or prolonged stop re
15. Fnom 5Hz Fnom Unom Unom x 1 3 10V Unom Fnom Fnom 5Hz Fnom 5Hz Fnom 0 327670 0 327670 0 327670 0 327670 0 327670 000068CG Set Time U lt Set Time F gt Set Time F lt Set time conn 1 Set time conn 2 Disable U gt gt Disable U lt lt Disable F gt gt Disable F lt lt Disable U gt Disable U gt 10Min Disable U lt Disable F gt Disable F lt U gt 10Min Der Slow Ramp OF Derating Reset Country S Accept boards Intervention time of Under Volta ge U lt protection Intervention time of Over Fre quency F gt protection Intervention time of Under Fre quency F lt protection Time lag of grid parameters con trol before connection Time lag of grid parameters control before connection after grid fault U gt gt protection threshold disabling U lt lt protection threshold disabling F gt gt protection threshold disabling F lt lt protection threshold disabling U gt protection threshold disabling U gt 10Min protection threshold disabling U lt protection threshold disabling F gt protection threshold disabling F lt protection threshold disabling Enabling of power derating due to high average grid voltage value Enabling gradual power immis sion into the grid after connection Selection of power derating mode due to high value of grid fre quency Allow to unlock the selectio
16. PV generator during the first mo ments that the voltmeter is connected between one of the two poles and ground it will measure a voltage of about Voc 2 which will tend to stabilize around OV if there is no ground leakage as shown in the graph below Voc Volt M 85 000040AG AN POWEr ONne A Renewable Energy Solutions Maintenance Behaviour of a system with leakage If the voltage measured between one of the two poles and ground does not tend to OV and stabilizes on a value there is a ground leakage from the PV generator Example When the measurement is made between positive pole and ground a voltage of 200V is measured This means that if the system is made up of 10 modules in series and each one supplies 50V the leakage can be located between the 4th and oth PV module Va Vb pees es ee eee eet ee ES 50V 50V 90 V 90 V 90 V 50V 50V 90 V 90 V 90 V D Va voltage measured between pole and 200V Vb voltage measured between pole and 300V In all the measurements with the ground of the inverter is indicated 86 000043CG AN POWEr ONne A Renewable Energy Solutions Maintenance Measuring the insulation resistance of photovoltaic generator To measure the insulation resistance of the PV generator compared to ground the two poles of the PV generator must be short circuited using a Suitably sized selector
17. equipped with DC disconnect switch 07 Standard version S Version Table electrical system components Ref Description 05 main board 06 service cable glands 07 DC disconnect switch 08 AC cable gland 09 AC output terminal board 10 DC input connectors 11 anti condensation valve a02 Connector for floating ground of the inputs a03 Connector for negative grounding of the inputs a04 Connector for positive grounding of the inputs 42 000062AG AN POWEr One A Renewable Energy Solutions Installation 5 Grounding configuration of the DC inputs The grounding of the inputs is negative configuration by default For the correct operation some photovoltaic panels require the connec tion of the potential of the positive terminal to the earth terminal or to have both of the input poles floating in regards to ground potential In order to achieve this it is possible to vary the default configuration moving the connector installed in a03 negative grounding to a04 positive grounding or a02 floating configuration The configuration of the grounding of the inputs must be done before any connections or testing takes place Incorrect configuration may cause damage to the system and photovoltaic panels Input connection to the PV generator DC side Standard version
18. has supplied It is essential to provide operators with correct information They must therefore read and comply with the technical information given in the manual and in the attached documentation The instructions given in the manual do not replace the safety devices and technical data for installation and operation stuck on the product and they certainly do not replace the safety regulations in force in the country of installation and common sense rules The manufacturer is willing to train staff at its premises or on site in accordance with conditions to be set out in the contract Do not use the equipment if you find any operating anomalies Avoid temporary repairs All repairs should be carried out using only genuine spare parts which must be installed in accordance with their intended use Liabilities arising from commercial components are delegated to the respective manufacturers 29 000017BG poket one 5t and accident prevention A Renewable Energy Solutions Hazardous areas and operations Environmental conditions and risks The equipment can be installed outdoors but only in environmental conditions that do not prevent its regular operation Adverse environmental conditions such as sun rain snow wind too hot or too cold altitudes humidity etc can lead to a reduction in performance Power One CANNOT be held responsible for disposal of the equipment displ
19. inverter see Alarm messages Internal ventilation Indicates an operating anomaly in the internal ventilation anomaly This does not cause much of a problem to the inverter because the fan starts only at high temperatures combined with high output powers Disconnection from the Indicates that the grid voltage for allowing the inverter to grid connect to the grid is not present The inverter shows the No Vac message on the display 65 000068CG poke ono erion 77 A Renewable Energy Solutions Specifications on the behaviour of the LEDs Next to each state of the inverter indicated through the steady or inter mittent lighting of the relevant LED a message that identifies the opera tion it is carrying out or the detected fault anomaly is also shown on the display 12 section b10 see relevant chapter Power one Renewable Energy Solutions s S fly c t iD kWh PIE oo 2503 BB 2554 lt 37 I kWh POWER ALARM GFI ESC UP DOWN ENTER In the event of malfunctioning it is extremely dangerous to try to eliminate the fault personally The instructions given below must be strictly followed if you do not have the experience and necessary qualification to work safely please contact a special ized technician Insulation fault LED What to do after an insulation fault warning When the red LED comes on first try to reset the warning through the multi function button ESC on th
20. main board Serial Connection Communication RS485 esses Procedure for connection to a monitoring system sese Monitoring system via serial RS485 sse Monitoring System via Radiomodule l I I a Configurable relay connection tate I I CODNNG01011 u u uuu OT Standard grid setting of the country and language display saving the country standard and language l l T 4 1 000050BG PowWer one Introduction and general information 1 A Renewable Energy Solutions R nawi 56 1 1 uisa uin FROM I EASA 56 Display KEYPA u u ee eee 57 Description of symbols and display fields l I aaa 57 Description of the keypad NER DT 58 59 GeherarcondallloliS u x 59 Monitoring and data transmission a u u u u 60 User ris Hz ed ModE 60 Types of data available 60 COMMISSIONI uuu uu T T 61 l iSplay Tee ies u um u 63 Dynamic behaviour the display nnn 64 m
21. might not connect to the grid Requirements of the PV generator If the PV generator is made up of two or more strings it is necessary to remember that they must be formed by PV modules which have the same type and number of panels in series In addition they must have the same installation conditions in terms of orientation in relation to the SOUTH and inclination in relation to the horizontal plane All input parameters that must be met for the correct operation of the inverter are shown in the specifications 40 000061AG AN POWEr ONne A Renewable Energy Solutions Installation 5 Choice of differential protection downstream of the inverter Based on the current CEI 64 8 Norms and Variant 4 V4 of September 2006 which in Section 712 Solar photovoltaic power systems PV ad dresses photovoltaic applications with particular reference to paragraph 712 413 Protection against indirect contact the following may be noted 712 413 1 1 1 2 When an electric system includes a PV power supply sys tem without at least a simple separation between the AC side and the DC side the differential device installed to provide protection against indirect contact by automatic disconnection of the power supply must be of the B type in accordance with IEC 60755 A 2 When the PV inverter is not in terms of its construction such as to put continuous ground fault current cc into the electrical system a differen tial s
22. 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 The employment of a person who is NOT qualified is drunk or on narcotics has a prosthetic mitral valves or a pacemaker Is strictly forbidden The customer is civilly liable for the qualification and mental or physical conditional of the professional figures who interact with the equipment They must always use the personal protective equipment provided for by the laws of the country of destination and whatever is provided by their employer 000005DG AN POWEr ONne Introduction and general information 1 A Renewable Energy Solutions Reference regulations The reference standards complied with in the design and manufacture of the equipment are described below 2006 95 EC Low voltage directive ex 3 23 EEC 2004 108 Electromagnetic Compatibility Directive Italian Legislative Decree D Lgs 6 11 2007 no 194 ex 89 336 EEC D Lgs no 81 of 9 4 2008 Implementation of the Consolidation Act on safety ex D Lgs 626 94 of 18 9 1994 directives for improvement of occupational health and safety UNI EN ISO 14121 1 2007 Safety of machinery Principles for risk assessment IEC EN 62109 1 2011 Safety of power converters for use in photovoltaic power systems Part 1 General requirements IEC EN 62109 2
23. remote OFF and remains in waiting state for the signal that will switch it on again remote ON The average grid voltage value every 10 minutes does not fall within the allowed ranges The grid voltage at the point connected to the inverter is too high This may be caused by a grid impedance that is too high Towards the end of the timeout the inverter limits the power to check whether the grid voltage stabilizes within the normal parameters If this does not happen the inverter disconnects from the grid This error can appear only if the Amorphous mode is enabled This function is enabled only in inverters equipped with grounding kit and is used to monitor the voltage at the ends of the grounding resistor The error appears when the voltage at the ends of the resistor connected between ground and pole of the photovoltaic generator exceeds 30V for more than 30 minutes or 120V for more than one second Error inside the inverter Insufficient irradiation Wrong configuration of the PV generator or a configuration at the limit as regards the minimum input voltage of the inverter 83 Maintenance This is an error inside the inverter that cannot be checked externally If the problem appears repeatedly you must contact the Power one Service This is an error inside the inverter that cannot be checked externally If the problem appears repeatedly you must contact the Power one Service Wait for th
24. right side of the voltage and current values At the end of the aforesaid display the grid frequency will be indicated in field b20 and the line voltage will be indicated in field b19 At the same time the main readings made by the inverter will be dis played in rotation on the graphic display b10 Display of the power graph b11 The histogram includes 16 horizontal units and 20 vertical units The period of time is represented by the horizontal axis of the graph and can be set by the user to 8 16 or 24 hours therefore each horizontal unit can represent 30 60 or 120 minutes The vertical axis represents the maximum power derating 2 2kW for the UNO 2 0 I OUTD and 2 75kW for the UNO 2 5 IOUTD and therefore 10096 corresponds to this outgoing exported power value Finally bear in mind that the power value expressed by each column of the graph represents the average value of the power during the period relating to the horizontal unit 64 000071AG poke one 77 A Renewable Energy Solutions LED behaviour The following table shows all the possible combinations of activation of LED on the LEDs situated on the LED panel 14 in relation to the operating state t LED flashing of the inverter C9 LED off x Any one of the conditions described above Table LED behaviour Status ofthe LEDs Operating state Notes ___________________ Night mode auto The inverter is in night time switch o
25. section of the menu allows you to set the address for the serial communication of single inverters connected to the RS485 line The addresses that can be assigned are 2 to 63 Use the UP and DOWN buttons to scroll the numerical scale At present the AUTO selection cannot be used Setting of Display This section of the menu allows you to set the characteristics of the display 1 Light setting of the mode and adjustment of the brightness of the display Mode On Light always on Off Light always off AUTO Automatic light control The light comes on whenever a button is pressed and stays on for 30 sec after which it gradually goes out Intensity adjustment of display brightness scale from 1 to 9 2 Contrast adjustment of display contrast scale from 1 to 9 3 Buzzer button sound setting On the sound of the buttons is activated Off the sound of the buttons is deactivated 4 Power Graph Allows you to set the time scale of the power graph 8 16 24h Service This section of the menu is reserved for installers To access this it is necessary to have a dedicated password that will be provided by the Power One Service 70 000068CG poke one 7 A Renewable Energy Solutions Once get password 2nd level is possible to perform the following set tings inwardly of menu Parameter Set U gt gt Set U lt lt Set F gt gt Set F lt lt Set U gt Set U 10Min Set U Se
26. to the grid and shows the Riso Low error The causes may be Damaged PV panel s Junction box es of the panels not properly sealed so allowing water and or damp seepage Problems in the connections between panels not perfectly connected Poor quality cable junctions Presence of unsuitable trigger voltage lower than the characteristics of the PV generator strings or damaged overvoltage surge arresters outside the inverter in the DC section Presence of damp inside the field panel if there is one Wrong measurement of the reference voltage inside the equipment Error in the internal measurement of the grid voltage imposed by regulations to have a measurement redundancy 2 measurements on the same parameter carried out by two different circuits Error in the internal measurement of the grid frequency imposed by regulations to have a measurement redundancy 2 measurements on the same parameter carried out by two different circuits Error in the internal measurement of the insulation resistance of the PV generator compared to ground imposed by regulations to have a measurement redundancy 2 measurements on the same parameter carried out by two different circuits Error in the internal measurement carried out when the inverter is connected to the grid of the leakage current of the DC side PV generator compared to ground imposed by regulations to have a measurement redundancy
27. value Val Daily production value calculated with the currency and conver sion coefficient set in the relevant section of the SETTINGS menu Amount of CO saved daily Last 7 days This section of the menu allows you to display the statistics for the last days E 7d Energy produced over the last 7 days Val Value of production for the last 7 days calculated with the currency and conversion coefficient set in the relevant section of the SETTINGS menu CO Amount of CO saved over the last 7 days 68 000068CG poke one 7 A Renewable Energy Solutions Last month This section of the menu allows you to display the statistics for the last month E mon Energy produced during the current month Val Value of production for the last month calculated with the currency and conversion coefficient set in the relevant section of the SETTINGS menu CO Amount of CO saved during the current month Last 30 days This section of the menu allows you to display the statistics for the last 30 days E 30d Energy produced over the last 30 days Val Value of production for the last 30 days calculated with the cur rency and conversion coefficient set in the relevant section of the SET TINGS menu CO Amount of CO saved over the last 30 days Last 365 days This section of the menu allows you to display the statistics for the last 365 days E 365 Energy produced over the last 365 days
28. 0 30 40 50 60 70 80 90 100 of Rated Output Power 000054AG AN POWEr One A Renewable Energy Solutions Characteristics 2 Power Derating In order to allow inverter operation in safe thermal and electrical conditions the unit automatically reduces the value of the power fed into the grid Power derating can take place due to adverse environmental conditions or due to unsuitable input voltage values The conditions for power reduction due to environmental conditions and input voltage can also occur at the same time but the power reduction will always relate to the lower value measured Power reduction due to environmental conditions The power reduction value and the inverter temperature at which it oc curs depend on the ambient temperature and on many operating para meters Example input voltage grid voltage and power available from the photovoltaic field The inverter can therefore reduce the power during certain periods of the day and according to the value of these parameters In any case the inverter guarantees the maximum output power even at high temperatures provided the sun is not shining directly on it Power reduction due to the input voltage The graphs show the automatic reduction of supplied power when input voltage values are too high or too low UNO 2 0 I OUTD UNO 2 0 I OUTD S UNO 2 0 OUTD I Pout Vs Vin Vin V Pout 110 W Pout 100 W 19 000054AG A
29. 000049CG UNO 2 0 2 5 I OUTD Installer EN Rev C M000003CG AN POWEr ONne Renewable Energy Solutions Italy Facility Via S Giorgio 642 92028 Terranuova Bracciolini Italy 39 055 9195 1 Camarillo Facility 740 Calle Plano INSTRUCTION MANUAL FOR THE INSTALLER Camarillo California 93012 United Stat soar UNO 2 0 1 UNO 2 5 http www power one com TRANSLATION OF THE ORIGINAL INSTRUCTIONS This manual must be considered as an integral part of the equipment and must be available at all times to everyone who interacts with the equipment The manual must always accompany the equipment even when it is transferred to another user Operators are under an obligation to read this manual and strictly follow the instructions given in it because Power One cannot be held responsible for damage caused to people or property or for damage to the equipment if the conditions described below are not complied with The customer is under an obligation to keep the industrial secret and therefore the following documentation and its annexes non may not be tampered with or modified reproduced or transferred to third parties without the authorization of Power One 000002AG power one 1 A Renewable Energy Solutions 1 Introduction and general information Conditions of warranty and supply Warranty conditions are described in an appropriate certificate supplied with the equipment Moreover the warra
30. 1 Improper or disallowed USE nnnm nnne nnn nnns 11 VA 1 EE E NRI 12 General conditions 12 Models and range of equipment 1 1 u a u 13 Identification of the equipment and the manufacturer eeeeese 13 Characteristics and technical data u u 14 WIGS IAG IOIQUe0S uuu 16 Overall CIMEN SIONS LLL L Ai III 16 Bracket dimensions sccccsessssescssescssescssescssesesscsesuesesuscesuceesseessssessetessecesuesesneeesetesseceeseseeee 17 18 FOV DENO 19 Power reduction due to environmental conditions aa 19 Power reduction due to the input Voltage 19 Characteristics of a photovoltaic generator 21 AT I e aa Xu SSS EM uN su 21 Description of the equipmentl u u u u 22 Operating didagi adil LU LLULLA E TO 22 Connection of several inverters together l I n aaa 23 Notes on the sizing Of the
31. 2 measurements on the same parameter carried out by two different circuits 82 Maintenance Error inside the inverter that cannot be checked externally If the problem persists after switching the inverter off and then on again contact the Power one Service If possible measure the insulation resistance using a megohmmeter positioned between the photovoltaic field positive terminal short circuited to the negative pole and ground as described in the relevant section checking the ground insulation of the PV generator If the measured value is less than 1 megaohm the photovoltaic generator must be checked by a technician installer to identify and eliminate the problem If the measured value is greater than 1 megaohm and the error warning continues to be present contact the Power one Service Damp increases leakage and can therefore be the cause of a reduction in insulation resistance Internal error that cannot be checked externally If the problem persists even after switching the inverter off and then on again contact the Power one Service This is an error inside the inverter that cannot be checked externally If the problem is persistent even after switching the inverter off and then on again contact the Power one Service This is an error inside the inverter that cannot be checked externally If the problem is persistent even after switching the inverter off and then on again contact the Pow
32. ION the relay switches when the inverter connects to the grid ALARM the relay switches when there is an alarm code E ALARM conf the relay switches if there are alarms code E or warn ings code W chosen by the user from a list the list may also show choices that are not envisaged for the specific model CREPUSCULAR the relay switches only when it exceeds the input voltage set for connection to the grid Remote Control This section of the menu allows you to enable disable the connection disconnection of the inverter to from the grid through the relevant control signal R R Disable the connection disconnection of the inverter to from the grid is dictated by the input voltage from the photovoltaic generator and out put grid voltage parameters of the inverter Enable the connection disconnection of the inverter to from the grid is dictated by the state of the R signal compared to the R signal as well as by the input voltage from the photovoltaic generator and output grid voltage parameters of the inverter UV prot This section of the menu allows you to set the time for which the inverter stays connected to the grid after the input voltage has dropped below the Under Voltage limit set at 70 of Vstart Power One sets the time at 60 sec The user can set it at from 1 to 3600 sec Example with the UV Prot time set at 60 seconds if the Vin drops below 70 of Vstart at 9 00 the inverter stays connected
33. N POWEr ONne A Renewable Energy Solutions UNO 2 5 I OUTD UNO 2 5 I OUTD S Characteristics 2 UNO 2 5 OUTD I Pout Vs Vin _ LLL LL LL LLL 20 000011BG AN POWEr ONne Renewable Energy Solutions Characteristics Characteristics of a photovoltaic generator A PV generator consists of an assembly of photovoltaic panels that transform solar radiation into DC electrical energy and can be made up of Strings X number of PV panels connected in series Array group of X strings connected in parallel Strings and Arrays In order to considerably reduce the cost of installing a photovoltaic system mainly associated with the problem of wiring on the DC side of the inverter and subsequent distribution on the AC side the string technology has been developed A photovoltaic panel consists of many photovoltaic cells mounted on the same support A string consists of a certain number of panels connected in series An array consists of two or more strings connected in parallel Large photovoltaic systems can be made up of several arrays connected to one or more inverters By maximizing the number of panels inserted into each string it is possible to reduce the cost and complexity of the connection system of the photovoltaic system CELL D STRING ARRAY LJCICICICICI D 0090090 0090090 0000090 0090090 0090090 009090 00 IL mim 00 mimi I
34. T be held responsible for disposal of displays cables batteries accumulators etc It is necessary that the Client provides according to standards in force in the country of installation disposal of such substances that are potentially harmful to the environment 000050BG PowWer one Introduction and general information 1 A Renewable Energy Solutions Contents 1 Introduction and general information 2 Conditions of warranty and supply 2 Exclusions from the SUDDIV oco iuis uasa bol YpR eec EU kii 2 o ocio ceri u E aaa aan 3 Reference number index U u u u u 6 Graphical representation of references 7 The document and who it is for 8 Purpose and structure of the 8 EISEOT m CS AE EE 8 Stall essnsavaccseedsnsatainsidedasuananensesisnedyiodalastennghwanneaeracasanusesatameniotaresbiaasvacnannintisetane 8 Reference r gulations naiean bii 9 SymbDolS and 510068 eee 10 Field of use general conditions I U U u uuu uu uu 11 Iriteniged or alowed USG as E 11 Limits Bier ee ee 1
35. age on the inverter If absent check for the absence of grid voltage on the supply If the voltage tends to rise when the inverter is connected it means there are high line or grid impedances Check the grid voltage on the supply as well if it is high it means there is a high grid impedance In this case ask the grid company to adjust the grid voltage If the grid company authorizes a change to the inverter parameters arrange the new limits with the Power one Service If the voltage at the supply point is much lower than that measured on the inverter the line must be adjusted inverter counter If the grid voltage and frequency fall within the limits even when the inverter is connected to the grid contact the Power one Service Table fail W009 Empty Wind wind models only Table Fan Fail W010 Bulk UV W011 Bulk Under voltage Battery low W012 Low internal clock battery voltage CIk fail W013 Internal clock fail Jbox fail W017 Fuse control board fail DC string fail SPD DC W018 SPD DC protection protection open open SPD AC W019 SPD AC protection protection open open Fan Fail not shown on the display This error appears when there is malfunctioning of the fan s inside the inverter In this condition the yellow LED on the front panel flashes Reading of the internal voltage on the bulk capacitors carried out when the inverter is connected to the grid Internal battery for maintena
36. anel 14 This functionality is active also in the event of grounded connection of one of the two input poles of the inverter Further protective devices The inverter is equipped with additional protective devices to guarantee safe operation in any circumstance These protective devices include Continuous monitoring of the grid voltage to ensure the voltage and frequency values stay within operating limits Control of internal temperatures to automatically limit the power if nec essary to ensure the unit does not overheat derating The numerous control devices produce a replete structure to guarantee totally safe operation 28 000016AG A N POWEr ONne A Renewable Energy Solutions 3 Safety and accident prevention Safety instructions and general information The equipment has been manufactured in accordance with the strictest accident prevention regulations and supplied with safety devices suitable for the protection of components and operators For obvious reasons it is not possible to anticipate the great number of installations and environments in which the equipment will be installed it is therefore necessary for the customer to appropriately inform the manufacturer about particular installation conditions Power one accepts no liability for failure to comply with the instructions for correct installation are cannot be held responsible for the systems upstream or downstream of the equipment it
37. ase of anomalies particularly af ter violent weather events input varistors a01 and output varistors a06 installed on the main board 05 Before restarting the inverter the cause of the failure must be resolved Once a year or in the event of malfunctioning check the backup batte ry and replace it if necessary The battery normally lasts 10 years but many conditions can reduce efficiency The battery is found in the slot a20 of the main board 05 AAAA Special maintenance Special maintenance operations should be performed in presence of warning Wxxx or error Exxx messages coming from the inverter To understand and solve the problem follow the table reported in the fol lowing paragraph related to Alarm Messages that the inverter could ge nerate Special maintenance operations can be carried out only by the installer or qualified staff 78 000070BG AN POWEr ONne Renewable Energy Solutions Alarm Messages Maintenance The equipment is able to indicate errors warnings on the display only if the input voltage is higher than the Vdcmin voltage POWER LED flash ing or on see operation chapter The messages and their codes are indicated on the highlighted part b10 of the display 12 Power one Renewable Energy Solutions JEBU gm sv m I1 total A 5 EHE 55A POWER ALARM 21 1 kWh UP DOWN ENTER The following table contains the entire Error warning list of string inverter
38. ata transmission on dedicated RS 485 serial line The data can be collected by a PC using the signal converter PVI USB RS485 232 or a data logger equipped with an RS 485 port PVI DESKTOP PVI AEC EVO Contact Power One assistance for any doubts about the compa tibility of the devices Types of data available The inverter provides two types of data which are usable through the relevant interface software and or through the display 12 Real time operating data Real time operating data can be transmitted on request through the communication lines and are not recorded in the inverter For data trans mission to a PC the free software supplied with the inverter can be used please check at www power one com for more updated versions Internally stored data The inverter internally stores a set of data that are necessary for pro cessing statistical data and an error log with time marking 60 000067AG BOKY ome Operation A Renewable Energy Solutions Commissioning Do not place objects of any kind on the inverter during operation Do not touch the heatsink while the inverter is operating Some parts may be very hot and cause burns b2 b4 b6 b8 b1 ia b5 _ b7 err NOTE Before proceeding with commissioning make sure you have carried out all the checks and verifications indicated in the section on preliminary checks Vin lt Vstart Vgrid OK
39. atic charges and parasitic voltages to be discharged When the equipment has just been switched it may have hot parts as a result of overheating of the surfaces at temperature e g transformers accumulators coils etc so be careful where you touch In the event of fire use CO foam extinguishers and use auto extraction systems to fight fire in closed environments Clothing and protective devices for staff Power One has eliminated sharp edges and corners but in some cases it is not possible to do anything and we therefore advise wearing the clothing and personal protective devices provided by the employer Staff must not wear clothes or accessories that can start fires or generate electrostatic charges or in gener clothing that can impede personal safety All operations on the equipment should be performed with suitably insu lated clothes and instruments E g Insulated gloves class 0 category RC Maintenance operations must be carried out with the equipment discon nected from the grid and from the photovoltaic generator Staff must NOT go near the equipment with bare feet or wet hands The maintenance technician must in any case make sure no one else can switch on or operate the equipment during the maintenance opera tions and must report any anomaly or damage due to wear or ageing so that the correct safety conditions can be restored The installer or maintenance technician must always pay attention to the wo
40. ation 5 Connections of the signals to the main board Each cable which must be connected to the connectors of the com munication and control signals must pass through the two service cable glands 06 shown in the picture The available cable glands are two M20s that can take a cable with a diameter of 7 mm to 13 mm Two hole gaskets are supplied for insertion in the cable gland which allow two separate cables with cross section of up to 5 mm to go through The signal cables are connected to the main board 05 inside the inverter by means of the terminal connectors supplied Serial Connection Communication RS485 111005 5485 On the inverter there is RS485 communication line dedicated to con necting the inverter to monitoring devices or to carrying out daisy chain in out connections of multiple inverters The RS485 connecting cables can use both the terminal connectors a14 as well as the RJ45 connectors to be connected to the dedicated port a12 Connection of the conductors using the terminal connectors a14 T R T R RTN and LNK The LNK connection must be used for connecting the shielding boot s of the cable s Connection of conductors with RJ45 connectors a12 The RJ45 connectors A and B available for the RS485 communica tion are equivalent to each other and can be used interchangeably for the arrival or for the output of the line in realising the daisy chain con
41. ay indicate a problem associated with the aforesaid relays The error is generated if the direct component of the current supplied to the grid exceeds the threshold of 0 596 of the rated operating current In any case the inverter does not stop because of the E023 error but tries to connect to the grid again Sporadic repetition of the error is a sign of large grid distortions or sudden changes in irradiation whereas systematic repetition of the error warning will be a sign of an inverter fault 81 Maintenance Error inside the inverter that cannot be checked externally If the problem persists after switching the inverter off and then on again contact the Power one Service If possible measure the insulation resistance using a megohmmeter positioned between the photovoltaic field positive terminal short circuited to the negative pole and ground If the measured value is less than 1 megaohm the PV generator must be checked by a technician installer to identify and eliminate the problem If the measured value is greater than 1 megaohm and the error warning continues to be present contact the Power one Service This is an error inside the inverter that cannot be checked externally If the problem persists after switching the inverter off and then on again contact the Power one Service By its nature the alarm appears only before connection to the grid This is an error inside the inverter that cannot
42. ays cables batteries accumulators etc and therefore the customer must dispose of these substances which are potentially harmful to the environment in accordance with the regulations in force in the country of installation The same precautions should be adopted for dismantling the equipment The equipment is not equipped to operate in environments that have particular flammability or explosive conditions The customer and or installer must appropriately train operators or anyone who may come near the equipment and highlight if necessary with notices or other means the hazardous areas or operations at risk if required magnetic fields hazardous voltages high temperatures possibility of discharges generic hazard etc Signs and plates The plates attached to the equipment must absolutely NOT be removed damaged dirtied hidden etc The plates must be cleaned regularly and kept visible at all times that is they must NOT be hidden with objects and extraneous parts rags boxes equipment etc The technical data shown in this manual do not in any case replace those shown on the plates attached to the equipment 30 000017BG A N POWEr ONne A Renewable Energy Solutions Safety and accident prevention 3 Thermal hazard WARNING removal of guards or covers is allowed only 10 minutes after the voltage has been removed this is to let components cool down and allow any electrost
43. be checked externally If the problem persists after switching the inverter off and then on again contact the Power one Service By its nature the alarm appears only before connection to the grid This is an error inside the inverter that cannot be checked externally If the problem persists after switching the inverter off and then on again contact the Power one Service By its nature the alarm appears only before connection to the grid Error inside the inverter that cannot be checked externally If the problem persists after switching the inverter off and then on again contact the Power one Service If the grid voltage is strongly distorted report this anomaly to the grid company for the resolution of the problem If there is an inverter fault contact the Power one Service 000070BG AN POWEr ONne Renewable Energy Solutions Internal error Riso Low Vref Error Error Meas V Error Meas F Error Meas Z Error Meas lleak E024 E025 not shown on the display Internal Error Low insulation resistance Bad internal reference voltage VGrid Measures Fault FGrid Measures Fault ZGrid Measures Fault ILeak Measures Fault Error inside the inverter Before connecting to the grid the inverter measures the insulation resistance of the PV generator compared to ground If the insulation resistance measured by the inverter is less than 1 Mohm the inverter does not connect
44. been acknowledged In some cases there may be a need to separately document the operation of the software or attach supplementary documentation to this manual for more qualified professional figures 12 000052AG AN POWEr One A Renewable Energy Solutions Characteristics 2 Models and range of equipment BE N B The plates must NOT be hidden with objects and extraneous parts rags boxes equipment etc they must be The specific models of multi string inverter that this manual is about are divided into two groups according to the maximum output power 2 kW or 2 5 kW For inverters of equal output power the variant between the various models is the presence or lack thereof of the DC disconnect switch 07 The choice of model of inverter must be made by a qualified technician who knows about the installation conditions the devices that will be installed outside the inverter and possible integration with an existing system 2 0 kW Single phase MODELS UNO 2 0 I OUTD Standard version UNO 2 0 I OUTD S Version equipped with DC disconnect switch 07 2 5 kW Single phase MODELS UNO 2 5 I OUTD Standard version UNO 2 5 I OUTD S Version equipped with DC disconnect switch 07 Identification of the equipment and the manufacturer The technical data shown in this manual do not in any case replace those shown on the plates attached to the equipment The plates attached to the equipment must NOT be remov
45. by the rules of the country of installation The inverter is equipped with a single input converter with maximum po wer point tracking MPPT to which it is possible to connect two strings of photovoltaic panels Thanks to the high efficiency and the large heat dissipation system a maximum power operation is guaranteed in a wide range of the ambient temperature without the use of external cooling fans The inverter is controlled by two independent DSPs Digital Signal Pro cessors and a central microprocessor The connection to the power grid is thus kept under control by two inde pendent monitors in full compliance with the electric field norms both for power supply to the systems as well as security The inverter is already equipped with all the protections necessary for Safe operation and compliance with the norms The operating system performs the operation of communicating with the relevant components to carry out data analysis All this guarantees optimal operation of the entire unit and high efficien cy in all insolation and load conditions always in full compliance with the relevant directives standards and provisions 26 CN Characteristics A Renewable Energy Solufions AN POWEr One LINDYID TOHLNOD NOISU3A S a4 C C INI C ULNI p Lo
46. d by a technician installer to identify and eliminate the problem If the measured value is greater than 1 megaohm and the error warning continues to be present contact the Power one Service You must check whether the composition of the PV generator allows an input current that exceeds the maximum threshold allowed by the inverter and that the configuration of the independent or parallel inputs is carried out correctly If the configuration of the PV generator and the setting of the input channels are suitable contact thePower one Service Measure the input voltage in the inverter with a voltmeter If itis higher than the maximum voltage of the operating interval the alarm is real and you must check the configuration of the PV generator If itis lower than the maximum voltage of the operating interval the alarm is caused by an internal malfunctioning and you must contact the Power one Service This is an error inside the inverter that cannot be checked externally If the problem persists after switching the inverter off and then on again contact the Power one Service 000070BG AN POWEr ONne Renewable Energy Solutions Bulk OV Comm Error Output OC IGBT Sat Internal error Bulk Low Ramp Fail DcDc Fail Wrong Mode Over Temp Bulk Cap Fail Inverter Fail E004 E005 E006 E007 E009 E010 E011 E012 E013 E014 E015 E016 Bulk Overvoltage Internal cation Error
47. d selected on the display and the position of the rotary selectors Time remaining Displays the time remaining in which it is still pos sible to set a new grid standard When the time expires Locked will be displayed which indicates it is not possible to change the grid standard again 76 000037AG A N POWEr ONne A Renewable Energy Solutions 8 Maintenance General conditions Checking and maintenance operations must be carried out by specialized Staff assigned to carry out this work Maintenance operations must be carried out with the equipment disconnected from the grid unless otherwise indicated For cleaning DO NOT use rags made of filamentary material or corrosive products that may corrode parts of the equipment or generate electrostatic charges Avoid temporary repairs All repairs should be carried out using only genuine spare parts The maintenance technician is under an obligation to promptly report any anomalies DO NOT allow the equipment to be used if problems of any kind are found and restore the normal conditions correctly or otherwise make sure that this is done Always use the personal protective equipment provided by the employer and comply with the safety conditions of the Accident prevention chapter Power One accepts no liability if the checking and maintenance cycles indicated in this manual and in the attached documentation are not complied with correctly and also whe
48. e LED panel 14 If the inverter duly reconnects to the grid the fault was due to temporary phenomena We advise having the system inspected by the installer or a specialized technician if this malfunctioning occurs frequently If the inverter does not reconnect to the grid make it safe by isolating it by means of the disconnect switches on the both the DC side and the AC side and then contact the installer or an authorized service centre to have the photovoltaic generator fault repaired 66 000068CG BOKY ome A Renewable Energy Solutions Description of the menus The display 12 has a section b10 graphic display for moving through the menu using the buttons of the LED panel 14 Section b10 consists of 2 lines with 16 characters per line and can be used to display the operating state of the inverter and the statistical data display the service messages for the operator display the alarm and fault messages for the operator changing the settings of the inverter POWEr One newable Energy Solutions e EE ED POWER ALARM GFI UP DOWN ENTER Using the panel buttons The and DOWN buttons of the LED panel 14 are used to move around a menu or to increase decrease the settable values The ESC button allows access to the three main sub menus STATIS TICS SETTINGS and INFORMATION This allows you to return to the previous sub menu while moving throu
49. e correct setting of these parameters allows you to display the actual earning saving given by the system Name the chosen value is set default is Euro Val KWh indicates the cost incentive of 1 KWh expressed in the chosen currency default is 0 50 Date Time Allows you to set the current date and time daylight saving time not included Language Allows you to set the required menu language Vstart This section of the menu allows you to set the Vstart voltage separately for both channels if they are configured in independent mode or avail able to adapt it to the requirements of the system We advise changing the activation voltage only if really necessary and to set it to the correct value the photovoltaic generator sizing instrument available on the Internet site of Power One indicates whether it is necessary to change the Vstart and the value to set Alarm This section of the menu allows you to set the switching of a relay con tact available as a normally open contact and also as a nor mally closed contact N C This contact can be used for example to activate a siren or a visual alarm control the disconnect device of an 273 000068CG poke ono eion 7 A Renewable Energy Solutions external transformer or control an external device Maximum ratings of the alarm contact 240Vac 1A and 30Vdc 0 8A The switching of the relay can be set in 4 different modes PRODUCT
50. e problem If the measured value is greater than 1 megaohm and the error warning continues to be present contact the Power one Service Error inside the inverter that cannot be checked externally If the problem persists after switching the inverter off and then on again contact the Power one Service Check the inverter input voltage If it does not exceed the Vstart check that there is sufficient irradiation and that the composition of the system is correct If it exceeds the Vstart contact the Power one Service 000070BG AN POWEr ONne Renewable Energy Solutions Input UV W002 Low input voltage during switch off Grid Fail grid voltage parameters Grid Fail W003 outside the limits Insufficient irradiation Wrong configuration of the photovoltaic generator or a configuration at the limit as regards the minimum input voltage of the inverter This error warning appears when during normal operation of the inverter the grid parameters fall outside the limits set by the grid company No grid voltage after the warning the inverter goes on No Vac Unstable grid voltage downwards and upwards Unstable grid frequency Maintenance Check the inverter input voltage If it does not exceed the Vstart check that there is sufficient irradiation and that the composition of the system is correct If it exceeds the Vstart contact the Power one Service Check the grid volt
51. e temperatures to which the inverter is exposed to return within operating range If the problem persists contact the Power one Service You must remember to wait for the time necessary to allow the inverter to warm up Error inside the inverter that cannot be checked externally If the problem persists after switching the inverter off and then on again contact the Power one Service Switch on the inverter remotely If the unit does not switch on disable the remote on off function and switch the equipment off completely and then switch it on again If the problem persists after re enabling the Remote ON OFF function from the display contact the Power one Service Check the grid voltage at the inverter connection point If the grid voltage diverges from the range because of grid conditions ask the grid company to adjust the grid voltage If the grid company authorizes a change to the inverter parameters arrange the new limits with the Power one Service Check for the presence and correct contacting of the two terminals of the grounding resistor installed inside the inverter If possible measure the insulation resistance using a megohmmeter positioned between the PV field positive terminal short circuited to the negative pole and ground as described in the operation chapter If the measured value is less than 1 megaohm the photovoltaic generator must be checked by a technician installer to identify and eliminate th
52. ected between the NC terminal and the common contact This contact can be used in four different operating configurations that can be set in the dedicated menu Operating modes Production the relay switches whenever a connection to and there fore a disconnection from the grid occurs So if the NO or NC contact is chosen the contact will stay open or closed until the inverter is connected to the grid once the inverter con nects to the grid and starts to export power the relay switches state and therefore closes or opens When the inverter disconnects from the grid the relay contact returns to its position of rest namely open or closed Alarm the relay switches whenever there is an alarm on the inverter Error No switching occurs when there is a Warning So if the NO or NC contact is chosen the contact will stay open or closed until the inverter reports an error once the inverter reports an error the relay switches state and therefore closes or opens NC Normally closed Common contact NO Normally open 51 000064AG AN POWEr ONne A Renewable Energy Solutions Installation 5 The contact remains switched from its rest condition until normal opera tion is restored Alarm configurable the relay switches whenever there is an alarm Error or a Warning which have been previously selected by the user through the dedicated menu If the NO or NC contact is chosen
53. ed damaged dirtied hid den etc N POWEI UHe WV AURORA PHOTOVOLTAIC INVERTER Made in Italy cleaned regularly and kept visible Pne 0ng at all times Made in iy AURORA PHOTOVOLTAIC INVERTER 13 000053CG AN POUWECI DIE SA Renewable Energy Solutions Characteristics 2 Characteristics and technical data Table Technical Data Input Absolute Maximum DC Input Voltage Vmax abs Start up DC Input Voltage Vstart Intervallo Operativo di Tensione DC in Ingresso Vdcmin Vdcmax Rated DC Input Power Pdcr Number of Independent MPPT Maximum DC Input Power for each MPPT PM PPTmax MPPT Input DC Voltage Range VMPPTmin f VMPPTmax f at Pacr Maximum DC Input Current Idcmax for each MPPT IMPPTmax Maximum Input Short Circuit Current for each MPPT Maximum Backfeed current from AC to DC side Number of DC Inputs Pairs for each MPPT DC Connection Type Input protection Reverse Polarity Protection Input Overvoltage Protection for each MPPT Varistor Photovoltaic Array Isolation Control DC Switch Rating for each MPPT S Version Output AC Grid Connection Type Rated AC Power Pacr Maximum AC Output Power Pacmax Rated AC Grid Voltage Vac r AC Voltage Range Maximum AC Output Current lac max Maximum output fault current Rated Output Frequency fr Output Frequency Range fmin fmax Nominal Power Factor C
54. ed from the grid and from the photovoltaic generator 36 000059AG AN POWEr One A Renewable Energy Solutions Installation 5 The installation must be carried out with the equipment disconnected from the grid power disconnect switch open and with the photovoltaic panels shaded or isolated Environmental checks Consult the technical data to check the environmental parameters to be observed degree of protection temperature humidity altitude etc Do not expose to direct sunlight to avoid unwanted power derating due to an increase in the internal temperature of the inverter Do not install in small closed rooms where air cannot circulate freely To avoid overheating always make sure the flow of air around the inverter is not blocked Do not install in places where gases or flammable substances may be present Do not install in rooms where people live or where the prolonged pres ence of people or animals is expected because of the noise that the inverter makes during operation Avoid electromagnetic interference that can compromise the correct operation of electronic equipment with consequent situations of danger Installations above 2000 metres On account of the rarefaction of the air at high altitudes particular conditions may occur that should be considered when choosing the place of installation Less
55. efficient cooling and therefore a greater likelihood of the device going into derating because of high internal temperatures Reduction in the dielectric resistance of the air that in the presence of high operating voltages DC input can create electric arcs discharges that can reach the point of damaging the inverter As the altitude increases the failure rate of some electronic components increases exponentially because of cosmic radiation All installations at altitudes of over 2000 metres must be assessed case by case con sidering the aforesaid criticalities 000059AG AN POWEr One A Renewable Energy Solutions Installation 5 Installation position When choosing the place of installation comply with the following condi tions Install on a wall or strong structure suitable for bearing the weight Install in safe easy to reach places f possible install at eye level so that the display and status LEDs can be seen easily Install vertically with a maximum inclination of 5 If this condition is not complied with the inverter could go into temperature derating be cause of the worsening of heat dissipation To carry out maintenance of the hardware and software of the equip ment remove the covers on the front Check that there are the correct safety distances for the installation that will allow the normal control and maintenance operations to be carried out Comp
56. emperature Relative Humidity 0 100 condensing 3 Environmental pollution classification for external environment Noise Emission lt 50 db A 1m 2000 m 6560 ft Maximum Operating Altitude without Derating Physical IP 65 Environmental Protection Rating Cooling Natural 518mm x 367mm x 161mm 20 4 x 14 4 x 6 3 Dimension H x W x D lt 17 kg 37 4 lb Weight Mounting System Wall bracket Overvoltage Category in accordance with IEC 62109 1 II DC input AC output Safety Isolation Level HF transformer oafety Class oafety and EMC Standard Grid Standard EN 50178 AS NZS3100 AS NZS 60950 EN61000 6 1 EN61000 6 3 EN61000 3 11 EN61000 3 12 Enel Guideline 0 21 Attachment 70 VDE 0126 1 1 VDE AR N 41050 G83 1 EN 50438 RD1663 AS 4777 1 The AC voltage range may vary depending on specific country grid standard 2 The Frequency range may vary depending on specific country grid standard 3 Night time consumption lt 0 6W 4 Limited to 2000 W for Germany 5 Limited to 2500 W for Germany 6 Since their applicability dates limited to plant power lt 3kW 7 Limited to plant power lt 3 68 kVA Remark Features not specifically listed in the present data sheet are not included in the product 15 000053CG Characteristics 2 lan POWES ONE Renewable Energy Solutions Tightening torques To maintain the IP65 protectio
57. epend on a certain number of factors and considerations to make such as for example the type of panels the availability of space the future location of the system energy production goals over the long term etc A configuration program that can help to correctly size the photovoltaic system is available on the web site of Power One www power one com 295 000055AG AN POWEr ONne A Renewable Energy Solutions Characteristics 2 Functionality and components of the equipment Data transmission and control The inverter or a network of several inverters can also be monitored remotely through an advanced communications system based on an RS 485 serial interface The range of optional Power One devices that can be connected to this communication line allows one to monitor the device locally or remotely via internet access In addition and again as an option it is possible to use a monitoring sy stem via radio by installing on the inverter itself the PVI Radiomodule radio board in order to have a remote data visualization terminal with a wireless connection Radiomodule The radiomodule board is an accessory that is used to add a radio com munication line to the inverter It can be used in parallel to the RS 485 line for the transmission of data to the monitoring system Configurable relay The inverter has a configurable switching relay that can be used in vari ous Operating conditions set in the dedicated me
58. er one Service Error inside the inverter that cannot be checked externally The error occurs if the internal measurement is carried out before connection to the grid If the problem is persistent even after switching the inverter off and then on again contact the Power one Service This is an error inside the inverter that cannot be checked externally If the problem is persistent even after switching the inverter off and then on again contact the Power one Service 000070BG AN POWEr ONne Renewable Energy Solutions Error Read V Error Read UTH Interlock fail Remote Off Vout Avg error Riso Low Mid Bulk OV Sun Low E031 E032 E033 E034 E035 not shown on the display E036 E037 E038 W001 Wrong V Measure Wrong Measure Under Temperature IGBT not ready Waiting remote ON Average Vout out of range Low insulation resistance amorphous mode only Mid bulk OV Low input voltage during switch on on of the inverter Measurement of the internal voltage at the ends of the output relay out of range There is too great a difference in voltage between the input and the output of the output relay Measurement of the output voltage unbalance carried out between the three phases out of range only in three phase models Temperature outside the inverter below 25 C Error inside the inverter The inverter has been switched off remotely
59. es from a minimum of 30 se conds up to several minutes depending on grid conditions and settings relative to the standard of the country 61 000067AG poe ono eion 77 A Renewable Energy Solutions At this point the b17 icon will flash this indicates the start up of the DC DC circuit booster part This icon will remain permanently switched on when the DC DC will be operating at steady state the flashing of the icon usually lasts a few seconds Immediately after this the b18 icon which indicates the AC DC circuit inverter part will also behave normally Immediately after this the grid connection will start During this phase the icons will be displayed in sequence on the b21 board until the con nection of the inverter After the inverter is connected the icons on the Inverter connected to the grid Whole line b21 will come on steady If the inverter disconnects from the grid the icons of the left side cable and plug of the line b21 will stay on Once the connection sequence has been completed the inverter starts to operate and indicates its correct operation by making a sound and by the green LED coming on steady on the LED panel 14 This means there is sufficient solar radiation to feed power into the grid Power one Renewable Energy Solutions JLI IE cH Ib i Mer J00 r oh a ol aad m am mak u rad z f B PETES
60. eventing damage to the equipment and to the operator is to have a thorough knowledge of the INSTRUMENTS We therefore advise you to read this manual carefully If you are not sure about anything or there is discrepancy in information please ask for more detailed information Do not use the equipment if you do not have suitable qualifications to work on this equipment or similar products you are unable to understand how it works you are not sure what will happen when the buttons or switches are operated you notice any operating anomalies there are doubts or contradictions between your experience the manual and or other operators Power One cannot be held responsible for damage to the equipment or the operator if it is the result of incompetence insufficient qualifications or lack of training 56 000065 AN POWEr ONne A Renewable Energy Solutions Instruments 6 Display and keypad Description of symbols and display fields The operating parameters of the equipment are displayed through the display 12 warnings alarms channels voltages etc During operation the display behaves dynamically which allows some information to be displayed cyclically see relevant chapter b1 Indicates the transmission and reception of data through the RS485 line b2 Indicates the presence of the RS485 communication line b3 Reports the presence of a line of radio communication Radiomodule card instal
61. ff mode input voltage switch off of the 70 less than the start up voltage set for both inputs inverter Inverter initialization This is a transition state due to the checking of the loading of settings and operating conditions During this phase the input power is wait for grid check sufficient and the inverter checks the conditions necessary for connection to the grid for example value of the input voltage value of the insulation resistance etc The inverter is The machine is operating normally During this phase the connected and feeds inverter automatically carries out a research and analysis power into the grid of the maximum power point MPP available from the photovoltaic generator Anomaly in the The inverter indicates that too low an insulation resistance insulation system of the R iso has been detected presence of a leakage to photovoltaic generator ground of the PV generator and feeds the power extracted from the photovoltaic generator into the grid The problem may be connected with an insulation fault in the PV modules or in the connections DC side We have Whenever the control system of the inverter detects an Anomaly warning W anomaly W or fault E in the operation of the monitored amp warning codes system the yellow LED comes on steady and a message Error error E warning indicating the type of problem found appears on the display codes 12 The error can be inside or outside the
62. fuses and the inverter continues to display the alarm message check whether the settings to be made through the Aurora Manager software are correct presence or absence of one or more input strings Look at the inspection window present on each surge arrester DC side If it is red the surge arrester is damaged and the cartridge must be replaced If the alarm status continues to be present even though all the surge arresters have a green inspection window contact the Power one Service Look at the inspection window present on each surge arrester AC side If it is red the surge arrester is damaged and the cartridge must be replaced If the alarm status continues to be present even though all the surge arresters have a green inspection window contact the Power one Service 000040AG AN POWEr ONne A Renewable Energy Solutions Maintenance Verification of ground leakage If the inverter has reported a ground fault there may be a ground leaka ge from the PV generator DC side To check this measure the voltage between the positive pole and ground and between the negative pole of the PV generator and ground using a voltmeter whose input accepts a voltage of at least 1000 Volts Behaviour of a system without leakage The internal resistance of the vol tmeter tends to zero the voltage present on the PV generator due to the capacitive effect How to make the measurement Due to the capacitive effect of the
63. gh the menus The ENTER button allows access to the required sub menu while moving though the menus and allows the main menu scroll mode to be changed icons b23 are activated amp CYCLIC Cyclic display of the main parameters of the inverter LOCKED Display locked on the screen you want to monitor continu ously 67 000068CG poke one 7 A Renewable Energy Solutions Statistics menu selecting STATISTICS from the three main sub menus gives access to Total This section of the menu allows you to display the Total statistics Time Total operating time E tot Total energy produced Val Total production value calculated with the currency and conver sion coefficient set in the relevant section of the SETTINGS menu CO Amount of CO saved compared to fossil fuels Partial This section of the menu allows you to display the partial statistics Time Partial operating time E par Partial energy produced PPeak Peak power value Val Partial production value calculated with the currency and conver sion coefficient set in the relevant section of the SETTINGS menu Partial amount of CO saved To reset all the counters of this sub menu press the ENTER button for more than 3 seconds At the end of this time you will hear a sound repeated 3 times Today This section of the menu allows you to display the daily statistics E day Daily energy produced Ppeak daily peak power
64. he first unit of the daisy chain and the computer Equivalent devices found on the market can also be used for the same purpose but bearing in mind that they have never been specifically tested Power One cannot guar antee correct operation of the connection Please note that these devices may also require an external termination impedance whereas this is not necessary with the Aurora PVI USB RS485 232 PVI USB RS485 232 PVI Desktop PVI AEC EVO 50 000064AG AN POWEr One A Renewable Energy Solutions Installation 5 Monitoring System via Radiomodule radiomodule card is an accessory for the data transmission via ra q dio waves to a monitoring device The radiomodule card is installed on the main board 05 vertically by s 4 connecting the two a13 connectors and screwing the anchoring screws In turn wiring ending with an antenna installed outside the inverter is connected to the radiomodule The part of the inverter where the antenna will be installed will be in the place of one of the service cable glands 06 of M20 measurements The monitoring is carried out using the PVI DESKTOP device Configurable relay connection The inverter has a multi function relay a09 whose switching can be configured It can be connected with normally open contact being con nected between the NO terminal and the common contact C and with normally closed contact being conn
65. hole gasket for M20 signal cable glands M20 2 2 and cover Female quick fit connectors 2 Male quick fit connectors 2 Bracket for wall mounting 1 Bolts and screws for wall mounting 3 Locking screw 03 for fastening of the inverter to the 1 bracket Bracket and screws for lead sealing the AC connector 1 User manual and CD ROM 1 34 000058AG power one Lifting and transport 4 Renewable Energy Solutions Equipment weight Mass weight in kg UNO 2 0 UNO 2 5 17 kg Lifting points 2 If the package is stored correctly it can withstand a maximum load of 6 pieces of equipment DO NOT stack with equipment or products other than those indicated 35 000021BG A N POWEr One A Renewable Energy Solutions 5 Installation General conditions Installation of the equipment is carried out based on the system and the place in which the equipment is installed therefore its performance depends on the correctness of the connections otaff authorised to carry out the installation must be specialised and experienced in this job they must also have received suitable training 25 on equipment of this type 4 lt lt The operation must be carried out by specialised staff it is in any case a advisable to comply with what is written in this manual and adhere to the 4 Ses diagrams and attached documentation The installation must be carried out with the equipment disconnect
66. iguration of the inverter and the characteristics of the PV generator comply with the specifications contact the Power one Service Wait for the temperatures to which the inverter is exposed to return within operating range and for the inverter to cool down If the problem persists once the ambient temperature has returned within the range contact the Power one Service You must remember to wait for the time necessary to allow the inverter to cool down Error inside the inverter that cannot be checked externally If the problem persists after switching the inverter off and then on again contact the Power one Service Error inside the inverter that cannot be checked externally If the problem persists after switching the inverter off and then on again contact the Power one Service 000070BG AN POWEr ONne Renewable Energy Solutions Start E017 Timeout Ground E018 Fault Self Test E019 Error 3 Self Test E020 Error 1 Self Test E021 Error 2 Self Test Error 4 E022 DC inj error E023 Inverter module start up timeout Leakage current fail Leakage current sensor self test fail Booster relay self test fail Inverter relay self test fail Relay self test timeout Dc Injection out of range Error inside the inverter regarding the time for starting steady state operation of the DC AC circuit part Inverter The alarm is generated when during normal operation of the inverter a ground lea
67. ing parameters that are not accessible to the operator and or parts of the equipment to vary the performance or change its insulations Cleaning with corrosive products that may corrode parts of the equipment or gener ate electrostatic charges Using or installing the equipment or parts of it without having read and correctly in terpreted the contents of the operating and maintenance manual Warming or drying rags and clothes on parts at temperature Besides being danger ous this would compromise the ventilation and cooling of the components 11 000008AG A N POWEr ONne A Renewable Energy Solutions General conditions yn 2 Characteristics The description of the characteristics of the equipment allows its main components to be identified to refine the technical terminology used in the manual The technical terminology and the quick information finding system are assisted by the following Contents e Numerical index of references Index The Characteristics chapter contains information about the models the composition of the equipment the characteristics and technical data the overall dimensions and the identification of the equipment This manual should be read inchronological order as established by the manufacturer and the reader assumes responsibility for failure to do so All the information is given considering each time that the information of the preceding chapters has
68. inverter to and from the grid can be controlled through an external control The function must be enabled in the relevant menu If the remote control function is disabled the switching on of the inverter is dictated by the presence of the normal parameters that allow the inverter to connect to the grid If the remote control function is operating besides being dictated by the presence of the normal parameters that allow the inverter to connect to the grid the switching on of the inverter also depends on the state of the LULILILIT R terminal compared to the R terminal present on the connector 14 of the main board 05 When the R signal is brought to the same potential as the R signal i e ee by making a short circuit between the two terminals of the connector lee this causes the inverter to disconnect from the grid The remote control OFF condition is shown on the display The connections of this control are made between the R input and Since this is a digital input there are no requirements to be ob served as regards cable cross section it only needs to comply with the sizing requirement for passing cables through the cable glands and the terminal connector 53 AN POWEr ONne A Renewable Energy Solutions Installation 5 Standard grid setting of the country and language display There are different grid parameters dictated by the electricity distributor according to the country i
69. ions to export po 24 000055 AN POWEr ONne A Renewable Energy Solutions Characteristics 2 wer to the grid do not reoccur i e Vin gt 80VDC the inverter disconnects from the grid and goes into SLEEP Mode Sleep Mode This functionality turns off the inverter completely and the power absorp tion is reduced to a minimum 0 6W In this mode the inverter allows display of the information available even in the absence of input voltage and therefore in the absence of sufficient irradiation of the photovoltaic panels In fact the display can be awake ned by pressing any button on the display After 30 seconds of inactivity the display will once again switch off au tomatically 25 000056 AN POWEr ONne A Renewable Energy Solutions Characteristics 2 Topographic diagram of the equipment The diagram summarises the operation of the inverter The main blocks are the DC DC input converter called booster and the DC AC output inverter Both work at a high switch over frequency and so are small and relatively light This inverter is equipped with a high frequency transformer in other words with galvanic isolation of the primary DC side from the seconda ry AC side while maintaining very high performance in terms of output and energy export This type of circuit allows for the grounding of the inputs both positive and negative where required by the solar panel type used or
70. is points out a hazard due to the presence of heated areas or in any case areas that have hot parts danger of burns This points out that the examined area must not be entered or that the described operation must not be carried out This points out that the equipment must not be worked on by anyone with a pacemaker prosthetic mitral valve or prosthesis with electronic circuits This points out that it is mandatory to carry out the described operations using the clothing and or personal protective equipment provided by the employer This indicates the degree of protection of the equipment according to IEC standard 70 1 EN 60529 June 1997 Point of connection for grounding protection This indicates the allowed temperature range This indicates the risk of electric shock Time need to discharge stored energy 5 10 minutes This indicates that the equipment must be disposed of in accordance with the regulations in force in the country of installation Respectively direct current and alternating current Isolating transformer present or not present Positive pole and negative pole of the input voltage DC This indicates the centre of gravity of the equipment 10 000051AG Power one Introduction and general information 1 A Renewable Energy Solutions Field of use general conditions Power One accepts no liability for damage of any kind that may arise from incorrect or careless operations The equipment
71. kage current is detected in the DC section of the system The alarm is accompanied by the lighting up of the red LED on the front of the inverter The inverter may even also generate the E018 alarm message for AC leakage currents associated with the capacitive nature of the photovoltaic generator compared to ground Before connecting to the grid the inverter carries out an autotest that regards the leakage current sensor The test is carried out by forcing a current of known value in the leakage current sensor the microprocessor compares the read value with the known value The error is generated if the comparison between the read value and the known value during the test is not within the allowed tolerance Before connecting to the grid the inverter carries out some internal tests One of these tests regards the correct operation of the booster relay The test is carried out by forcing the switching of the relay and checking its functionality The error is generated if a problem is found with the operation of the relay Before connecting to the grid the inverter carries out a test that regards the operation of the inverter relay The test is carried out by forcing the switching of the relay and checking its functionality The error is generated if a problem is found with the operation of the relay Time taken to execute the autotest carried out on the relays of the DC AC circuit part inverter is too long This m
72. led b4 Indicates the presence and enablement of the bluetooth communication line NOT available b5 Indicates the presence and enablement of the WiFi communication line NOT available b6 Reports a derating of active power for the input voltage out of range or power limitation imposed by the grid or display operator b7 Reports a derating of power due to high internal temperature b8 Instantaneous power generated for the grid b9 MPPT SCAN function activated b10 Lines of text for the cyclical display of inverter parameters error codes and the menu navi gation b13 Displays the energy produced over a day b12 Displays the total energy produced since installation of the inverter b11 Graph of the power fed into the grid from 0 to 100 The time scale is settable to 8 16 24 hours b18 Indicates the circuit part for conversion from DC to AC b20 Output current from the highlighted phase At the end of the display of the currents the grid frequency Hz is displayed b21 Connection to the grid e inverter not connected 4MP Inverter connected b19 Output voltage of the highlighted phase b22 Status of the grid voltage Icon not present no grid voltage Flashing icon grid voltage present but outside the parameters set by the grid standard Icon present grid voltage present and within the parameters set by the grid standard b17 Indicates the DC DC input circuit part Boo
73. les To protect the AC connection line of the inverter we recommend install ing a device for protection against over current and leakage with the following characteristics UNO 2 0 l OUTD UNO 2 5 l OUTD Automatic circuit breaker with differential thermal magnetic protection 230Vac 16A 230Vac 16A B C B C 30mA 30mA 2 2 Connection to the AC side terminal board a09 2 To prevent electrocution hazards all the connection operations must be carried out with the disconnect switch downstream of the inverter grid side open and locked For all models you connect the AC output screw terminal block 09 by passing the cables through the AC cable gland 08 The maximum diameter accepted by the cable gland is from 10 to 17 mm2 while each terminal of the terminal board accepts a cable with cross section which can vary from 0 6 up to 16 mm2 Unscrew the AC cable gland 08 remove the cover insert the cable of suitable cross section and connect the conductors Ground Neutral and Phase to the terminals on the AC output screw terminal block 09 Pay special attention and ensure you do not reverse the phase with the neutral Once the connection to the terminal board has been made tighten the cable gland firmly and check the seal Before connecting the inverter to the distribution grid it is neces sary to set the country standard by manipulating the two rotary switches 09 and following the instructions i
74. lock 09 Use a properly sized tripolar cable and check the tightness of the AC cable gland 08 at the end of the installation Standard version S Version Characteristics and sizing of the line cable The cross section of the AC line conductor must be sized in order to prevent unwanted disconnections of the inverter from the grid due to high impedance of the line that connects the inverter to the power supply point In fact if the impedance is too high it causes an increase in the AC voltage that on reaching the limit set by the country of installation causes the inverter to switch off The table shows the maximum length of the line conductor based on the cross section of this conductor 10 17 mm Cross section of the line con Maximum length of the line conductor m ductor UNO 2 0 I OUTD UNO 2 5 I OUTD 2 0 15 12 4 25 20 6 38 30 The values are calculated considering an energy loss along the line in rated power conditions not exceeding 1 The temperature rating of the line cable must be at least 20 C above the maximum expected ambient temperature 45 000063AG AN POWEr ONne A Renewable Energy Solutions Installation 5 Load protection switch AC disconnect switch Voltage Current rating Magnetic protection characteristic Type of differential protection Differential sensitivity Number of po
75. ltage or the input voltage but is not attributable to inverter malfunctioning If the error is associated with an internal fault it will continue to appear and you must therefore contact the Power one Service Error inside the inverter that cannot be checked externally If the problem persists after switching the inverter off and then on again contact the Power one Service If the error warning appears sporadically it can be attributed to causes external to the inverter insufficient irradiation and therefore little power available from the PV generator If the problem appears systematically even in conditions of high solar radiation and with input voltage significantly higher than the activation voltage contact the Power one Service Error inside the inverter that cannot be checked externally If the problem persists after switching the inverter off and then on again contact the Power one Service Error inside the inverter that cannot be checked externally If the problem persists after switching the inverter off and then on again contact the Power one Service Make sure the setting of the IN MODE switch has been intentionally positioned on PAR and that the jumpers have been inserted between the two input channels If the configuration of the inverter is correct check that the input strings have the usual number of panels in series of the usual make and with the same inclination orientation If both the conf
76. ly with the indicated minimum distances OK 02 02 02 02 For a multiple installation position the inverters side by side OK e 41 f the space available does not allow this arrangement position the inverters in a staggered arrangement as shown in the figure so that heat 222 22 dissipation is not affected by other inverters 00 NO 22 38 000060 lan POWESr ONE Renewable Energy Solutions Wall Pole mounting During installation do not place the inverter 02 with the front cover 04 facing towards the ground Position the bracket 01 perfectly level on the wall and use it as a drilling template Drill the 3 holes required using a drill with 10mm bit The holes must be about 7Omm deep On bracket 01 there are 5 fastening holes but only 3 are used depend ing on the type of installation on a pole holes A on a wall holes B Fix the bracket to the wall with the 3 wall anchors 10mm in dia meter supplied Hook the inverter to the bracket by inserting the head of the rear screws in the slots as shown in the figure Proceed to anchor the inverter to the bracket by tightening the lock ing screw 03 located on the lower side Unscrew the 4 screws and open the front cover 04 upwards in or der to make all the necessary con nections The cover is equipped with fixed hinges and cannot be removed Once the connections have been made proceed to closing
77. must not be used for uses that do not fall within the intended field of use The equipment MUST NOT be used by inexperienced staff or by experienced Staff to carry out operations on the equipment that are not in accordance with what Is described in this manual and in the attached documents Intended or allowed use This equipment is a multi string inverter designed to transform a direct electric current DC coming from a photovoltaic generator PV into an alternating electric current AC Suitable for being fed into the national grid Limits of the field of use The operating current dispersed during normal operation must not exceed the limits specified in the technical specifications Only one photovoltaic generator can be connected to the input of the inverter do not connect batteries or other sources of power supply The inverter can be connected to the electricity grid in qualified countries only The inverter can be used only if all the technical characteristics are observed Improper or disallowed use THE FOLLOWING ARE STRICTLY FORBIDDEN Installing the equipment in environments with particular flammability conditions or in adverse or disallowed environmental conditions temperature and humidity Using the equipment with the safety devices not working or disabled Using the equipment or parts of the equipment by connecting it to other machines or equipment unless expressly provided for Modifying the operat
78. n maintenance is entrusted to unqualified staff To maintain the correct working performance have the systems checked by your installer after about 5 years of activity 77 000070BG AN POWEr ONne A Renewable Energy Solutions Maintenance Routine maintenance For routine maintenance operations is recommended to be carried out by the installer or qualified staff Table routine maintenance Perform annually or as necessary cleaning of the equipment verify in lt lt particular the cleaning of the heat sink 15 in order to avoid obstructions that could compromise the air flow Use compressed air a vacuum cleaner or special cleaners if possible Clean the photovoltaic panels every year at the change of season or lt lt as necessary The performance of the system depends very much on the condition of the photovoltaic panels To clean follow the specifications of the PV panel supplier Every year or in the event of malfunctioning check that the environmental conditions have not changed drastically exposure to weather conditions also check that the inverter or PV panels have not been shaded or isolated by foreign bodies Once a year or in the event of malfunctioning check the tightness of the cable glands 06 or 08 the fixing of the connectors and the fixing of the front cover 04 Any infiltration can generate problems of humidity and consequent short circuit Carry out tests every year or in the c
79. n of the grid standard via rotary switches Allow to associate a new inverter board when replacing soe V ome Operation A Renewable Energy Solutions 0 327670mS 0 327670 0 327670 0 65535mS 0 65535 Enable Disable Enable Disable Enable Disable Enable Disable Enable Disable Enable Disable Enable Disable Enable Disable Enable Disable Enable Disable 0 Derating disable 1 Derating BDEW 2 Derating VDE AR N 3 Derating 000068CG erion 7 A Renewable Energy Solutions Due to the variation of the above mentioned parameters it is possible that the discon nection from the grid does not take place if the values exceed those mentioned in the standards of the country of installation If these parameters exceed the standard values install an interface protection external to the inverter which is compliant with the requirements of the country of installation New PW This section of the menu allows you to change the password for access ing the settings menu default 0000 We ADVISE you to be very careful in memorizing the new password If the Password is misplaced it will not be possible to access the inverter since there is no Reset function for security reasons Currency This section of the menu allows you to set the name of the currency and the value given to 1 kWh of energy produced Th
80. n of the system and for optimal installa tion the following tightening torques must be used Front cover 04 screws 2 2 Nm AC cable gland 08 M25 5 0 Nm service cable glands 06 M20 2 7 Nm AC output screw terminal block 09 6 1 5 Nm oignals terminal boards 0 25 Nm Quick fit connectors WM MC4 2 5 Nm Overall dimensions The overall dimensions are expressed in mm and in inches 518 mm 20 4 16 000053CG power one _ _____ Characteristics_ 9 A Renewable Energy Solutions Bracket dimensions The overall dimensions are expressed in mm and in inches 295mm 11 61 220mm 8 66 53mm 2 09 482mm 18 98 18 5mm 0 73 50mm 1 97 17 000054AG AN POWEr ONne A Renewable Energy Solutions Characteristics 2 Efficiency curves The equipment was designed in compliance with energy conservation standards to avoid waste and unnecessary leakage The manufacturer has taken into due consideration the current energy saving standards in Italy Graphs of the efficiency curves of all the models of inverter described in this manual are shown below The efficiency curves are linked to technical parameters that are continually being developed and improved and should therefore be considered approximate UNO 2 0 I OUTD UNO 2 0 I OUTD S 96 1096 2096 3096 4096 5096 6096 70 80 90 100 of Rated Output Power UNO 2 5 I OUTD UNO 2 5 I OUTD S 10 2
81. n the table displayed in the relevant section v NOTE For installations carried out in Italy it is required to lead seal the AC connector To this end a bracket must be fixed on top of the AC output screw terminal block 09 by tightening the screw on the appropriate turret is provided The distributor grid during the phase of connecting to the grid will then provide for application of the lead sealing 46 000064AG lan POWESr ONnE A Renewable Energy Solutions Installation 5 Main board ae i mm mi Main board 05 Ref manual Ref inverter Description a01 J9 J10 Input varistors a02 J5 Connector for floating ground of the inputs a03 J7 Connector for negative grounding of the inputs a04 J8 Connector for positive grounding of the inputs a05 F1 J25 PTC a06 J11 J12 Output varistors a07 J4 Inverter data memory card housing a08 BT1 Battery housing a09 1 2 Rotary switches for setting the standard of the country and the language of the display 10 3 Switch for setting the termination resistance of the RS485 line 11 J16 RS485 communication card housing 12 J13 J14 Connection of the RS485 line on RJ45 connector a13 J6 J15 Radiomodule card slot a14 J24 Speed sensor connections remote control RS485 a15 J23 Connection to the multi function relay 09 J21 J22 AC output terminal board 47 000064AG AN POWEr One A Renewable Energy Solutions Install
82. n to the experience of specialized staff in change of loading and unloading the components Where indicated and or where there is a provision eyebolts or handles which can be used as anchorage points are inserted and or can be inserted The ropes and means used for lifting must be suitable for bearing the weight of the equipment Do not lift several units or or parts of the equipment at the same time unless otherwise indicated Unpacking and checking We remind you that the packaging elements cardboard cellophane Staples adhesive tape straps etc may cause cuts and or injuries if not handled with care They should be removed by suitable means and not left in the hands of irresponsible people e g children The components of the packaging must be disposed on in accordance with the regulations in force in the country of installation When you open the package check that the equipment is undamaged and make sure all the components are present If you find any defects or damage stop unpacking and consult the carrier and also promptly inform Power One 25925 000058AG poke one Lifting and transport 4 A Renewable Energy Solutions List of supplied components Table Components supplied with the equipment Components available for all models Quantity Connector for connecting the configurable relay 2 SSS Connector for the connection of the communication 2 and control signals L key TORX TX20 1 Two
83. n which the inverter is installed Setting the grid standard for the country of installation is a necessary operation before commissioning and the installer must know the correct standard to be configured The inverter is configured using the rotary switches a09 Before turning the rotary switches make sure the inverter is switched off At the same time as the grid standard is set the language of the dis play menus is also set a09 Table country standard and language The table below shows which country grid standard and menu language are assigned to the various positions of the rotary switches a09 Q1 2 000064 Switch 1 Switch 2 Country Grid Standard Display menu language 0 0 NOT ASSIGNED ENGLISH 0 1 GERMANY VDE 0126 230V GERMAN Single Phase 0 2 UL 1741 208V Single Phase ENGLISH 0 3 UL 1741 240V Split Phase ENGLISH 0 4 UL 1741 277V Single Phase ENGLISH 0 5 ENEL GUIDA 230V Single Phase ITALIAN 0 6 SPAIN 230V SPANISH 0 7 UK G83 230V ENGLISH 0 9 IRELAND 230V ENGLISH 0 A AUSTRALIA 230V ENGLISH 0 B ISRAEL 230V ENGLISH 0 D FRANCE 230V FRENCH 0 E BELGIUM 230V FRENCH 0 F GREECE 230V ENGLISH 1 0 PORTUGAL 230V ENGLISH 1 1 CORSICA 230V FRENCH 1 2 HUNGARY 230V ENGLISH 1 3 CHINA 230V ENGLISH 1 4 KOREA 220V ENGLISH 1 5 TAIWAN 230V ENGLISH 1 6 CHECA Republic 230V ENGLISH 1 7 GERMANY VDE AR N 4105 230V GERMAN 1 8 ENEL CEI 021 230V Single Phase ITALIAN 8 8 Debug USA
84. nce of the date time settings is discharged or damaged The alarm appears when the time shown on the display differs by more than 1 minute from the internal time of the microprocessors and indicates Clock circuit malfunctioning Fuse s on the fuse boards is are damaged Overvoltage surge arresters situated on the DC side are damaged Overvoltage surge arresters situated on the AC side are damaged 84 Error inside the inverter that cannot be resolved with external operations If the alarm is persistently repeated contact the Power one Service Alarm not shown on the display there is only a flashing yellow LED Check the inverter input voltage If it does not exceed the Vstart check that there is sufficient irradiation and that the composition of the system is correct If it exceeds the Vstart contact the Power one Service Replace the battery with the inverter completely switched off disconnect AC side and DC side and be sure to observe the correct polarity This is an error inside the inverter that cannot be resolved with external operations If the alarm is persistently repeated contact the Power one Service Using a multimeter check the condition of the fuses situated on the fuse boards Replace any open fuses and check that the input current on the string s does not exceed the rating of the fuses if string parallels have been made outside the inverter If there are no damaged string
85. nd the alarm is raised if the two voltages differ by more than 20Vdc External temperature above 60 C This parameter also depends on the power that the inverter must supply since the measurement of the temperatures is carried out internally and is affected by the heat dissipated by the components of the inverter Error inside the inverter regarding a problem in the bulk capacitors The alarm is generated when a problem is detected in the inverter circuit part DC AC 80 Maintenance The alarm can be caused by causes external to the Inverter an excessive inverter input voltage can be detected as a bulk overvoltage condition In this case it is advisable to check the inverter input voltage and if this value is near the input OV threshold re examine the configuration of the photovoltaic generator The alarm can be caused by causes internal to the inverter and in this case you must contact the Power one Service Error inside the inverter that cannot be checked externally If the problem persists after switching the inverter off and then on again contact the Power one Service Error inside the inverter that cannot be checked externally If the problem persists after switching the inverter off and then on again contact the Power one Service Once the error appears the inverter attempts to resume normal operation If the error occurs sporadically it may be caused by a sharp transition of the grid vo
86. nec tion of the inverters The same is true for connections made using the terminal connectors a14 48 000064AG AN POWEr ONne A Renewable Energy Solutions FRONT 1 8 Installation Table crimping scheme connectors RJ45 Pin N Function 1 1 not used not used T R not used T R not used RTN not used Nl OD O1 amp GO RO Use a connector with metal body to provide cable shield For long distance connections the connection on terminal connector is continuity preferable using a shielded twisted pair cable with characteristic imped ance of Z0 120 Ohm like the one shown in the following table Signal Symbol Pair Cable Positive data T R A 1 Negative data T R A 2 Reference RIN B 1 2 Shield continuity must be provided along the communication line using the LNK ter minal and must be grounded at a single point Procedure for connection to a monitoring system Connect all the units of the RS485 chain in accordance with the daisy chain arrangement in out observing the correspondence between signals and activate the termination resistance of the communication line in the last element of the chain by switching switch a10 to ON posi tion HP Monitor a10 OFF a10 OFF TERM 120 2 a10 p S3 49 000064AG AN POWEr ONne A Renewable Energy Solutions Installation 5 If a single i
87. nected as the input Analogue Inputs Input Strings where present setting necessary to carry out checks on the status of the fuses and on the current imbalance of the strings present in the input Fuse control parameters Reactive power input setting where present setting necessary to manage the reactive power input into the grid in different ways Reacti ve Power parameter Limitation active power setting where present setting necessary to set a limit on active power output of the inverter Power reduction parameter 63 000067AG poke ono eion 7 A Renewable Energy Solutions Dynamic behaviour of the display sg fes an TT FW nrmrs f the MPPT scan function is enabled icon b9 will be shown on the display See configuration in the MPP T settings menu section This icon will flash during scanning During operation the following values are displayed in rotation Voltage and current b15 and b16 from the PV generator According to the configuration or model of the inverter the voltages and currents of one or both channels or of the single strings will be displayed The input channel considered is indicated by the value entered on icon b14 Voltage and current b19 and b20 on the various phases According to the model of inverter the voltages and currents of one 1 or three phases 1 2 3 will be displayed The phase considered is shown on the
88. ntrolled through the instruments The interpretation or variation of some data Is reserved exclusively for specialized and qualified staff The incoming voltage must not exceed the maximum values shown in the technical data in order to avoid damaging the equipment Consult the technical data for further details Even during operation check that the environmental and logistic conditions are correct see installation chapter Make sure that the said conditions have not changed over time and that the equipment is not exposed to adverse weather conditions and has not been isolated with foreign bodies 59 000066 erio 7 A Renewable Energy Solutions Monitoring and data transmission As a rule the inverter operates automatically and does not require spe cial checks When there is not enough solar radiation to supply power for export to the grid e g during the night it disconnects automatically In this mode data consultation on the display 12 is possible holding down any one key of the keypad 13 the display is activated The operating cycle is automatically restored when there is sufficient solar radiation At this point the luminous LEDs on the LED panel 14 will indicate this state User interface mode The inverter is able to provide information about its operation through the following instruments Warning lights luminous LEDs LCD display for displaying operating data D
89. nty conditions are understood to be valid if the Client observes what is described in this manual any conditions deviating from those described below must be explicitly agreed upon in the purchase order Power one declares that the tool complies with legal provisions in force in the European Economic Community and releases statements of compliance Exclusions from the supply Power one declines any responsibility in case standards for correct installation are not adhered to and it is not liable for systems upstream or downstream of the equipment supplied by it It is absolutely prohibited to make modifications to the equipment The Customer is entirely responsible for any modifications made to the system Itis not possible to provide the multitudes of installations and environments in which the tool will be installed for this it is necessary to checked for adequate spaces adapted to accept the tool air noise produced as a function of the environment any conditions of flammability Power one cannot be held responsible for lack of production even if it results from break downs of the tool or the data communication system Power one CANNOT be held responsible for defects or malfunctions as result of improper use of the tool alterations due to transportation or special environmental conditions lack of or improper maintenance tampering or poor repairs use or installation done by non qualified people Power one CANNO
90. nu A typical application example is the closing of the contact when an alarm occurs Remote switching on off This command can be used to disconnect connect the inverter to the grid via an external remote command This function must be enabled in the relevant menu and if it is operating the connection of the inverter on the grid besides being dictated by the presence of normal parameters also depends on the external switching on off control Input poles grounding The circuit type of the inverter isolated by a high frequency transformer allows through special wiring located inside the inverter for the connec tion of one of the two input DC poles positive or negative to ground It is also possible to have both the input DC poles floating and as such not grounded Stand by Mode This functionality allows the inverter to remain on and grid connected even with an input voltage of less than 70Vdc It is particularly useful in conditions of low irradiation and with passing shadowed areas that would cause continuous connections and disconnections to the grid In stead with this functionality the inverter starts to deliver power as soon as the input voltage exceeds the 80VDC without having to repeat the grid connection sequence The time in which the inverter remains in this state can be set by acces sing the Settings menu and activating the time for Input Undervoltage Protection TprotUV If within the set time the condit
91. nverter is connected to the monitoring system activate the termination resistance of the communication line by switching switch 10 to ON position Set a different RS485 address on each inverter of the chain No inverter should have Auto as its address An address can be chosen freely from out of 2 to 63 The address on the inverter is set through the display and the push button panel see relevant chapter We recommend not exceeding a length of 1000m for the communication line No more than 62 inverters can be connected to the same RS465 line 10 TERM 120 9 S3 When using an RS 485 connection if one or more inverters are added later to the system you must remember to return to OFF position the switch of the termination resistance used PC or PMU of the inverter that was previously the last one of the system Each inverter is dispatched with two 2 as the predefined RS485 ad dress and with switch for setting termination resistance a10 to OFF posi tion Monitoring system via serial RS485 The 5485 line can be connected to various monitoring devices that can be in local or remote mode Local monitoring from PC with PVI USB RS485 232 adaptor and Aurora Communicator software Local monitoring from remote display with PVI DESKTOP device Remote monitoring with PVI AEC EVO monitoring system and Portal P1 For local monitoring Power One recommends connecting its PVI USB 5485 232 adaptor between t
92. osphiac r Total Harmonic Distortion of Current AC Connection Type Output protection Anti Islanding Protection Maximum AC Overcurrent Protection Output Overvoltage Protection Varistor Operating performance Maximum Efficiency nmax Weighted Efficiency EURO CEC UNO 2 0 I OUTD UNO 2 5 I OUTD 520 V 200 V adj 120 350 V 0 7 x Vstart 520 V 2100 W 2600 W 1 2300 W Linear Dera 2900 W Linear Dera ting from MAX to Null ting from MAX to Null 470 lt lt 520 470 lt lt 520 200 470 V 200 470 V 12 5 12 5 12 8 12 8 15 0 Negligible 2 Tool Free PV Connector WM MC4 Yes from limited current source 2 According to local standard 16 A 600 V Single phase 2000 W 2200 W 2500 W 2750 W 230 V 180 264 V 10 5 lt 20Arms 60mS 50 Hz 47 53 Hz 02 gt 0 990 lt 2 Screw terminal block 12 5A According to local standard 15 0 A 2 L N L PE 96 3 95 1 95 4 000053CG AN POWEr ONne A Renewable Energy Solutions Characteristics 2 24 0 W Power Input Treshold lt 8 0 W 9 Stand by Consumption Communication Wired Local Monitoring Remote Monitoring Wireless Local Monitoring User Interface PVI USB RS232 485 PVI DESKTOP opt PVI AEC EVO opt AURORA UNIVERSAL opt PVI DESKTOP opt with PVI RADIOMODULE opt Graphic display Environmental Ambient Temperature Range otorage T
93. quires a check and in some cases the removal of oxidation and dust that will also have settled inside the equipment if not suitably protected Dismantling decommissioning and disposal Power One CANNOT be held responsible for disposal of the equipment displays cables batteries accumulators etc and therefore the customer must dispose of these substances which are potentially harmful to the environment in accordance with the regulations in force in the country of installation If the equipment is dismantled in order to dispose of the products that it is composed of you must adhere to the regulations in force in the country of destination and in any case avoid causing any kind of pollution Dispose of the various types of materials that the parts of the equipment consist of in dumps that are suitable for the purpose Table disposal of components COMPONENT MATERIAL OF CONSTRUCTION Frame pia6kelS Arc welded steel FE37 Or COVO M Pc ABS plastic zn Gaskets and 5626 l u u u Rubber Teflon Viton CD er ax u Copper Rubber olyelhylen Conduits OP eee Tm Nickel Lead Lithium 88
94. r the energy drawn from the utilities connected to the grid to which it is linked The solar energy system therefore powers all connected electrical de vices from lighting to household appliances etc When the photovoltaic system is not supplying sufficient power the power needed to ensure normal operation of the connected electrical devices is drawn from the national grid If on the other hand excess power is produced this is fed directly into the grid so becoming avail able to other consumers In accordance with local and national regulations the power produced can be sold to the grid or credited towards future consumption so bring ing about a saving of money Operating diagram PV generator Inverter Distributor Grid company 225 000012CG AN POWEr One A Renewable Energy Solutions Characteristics 2 Connection of several inverters together If the photovoltaic system exceeds the capacity of a single inverter it is possible to make a multiple connection of inverters to the system with each one connected to a suitable section of the photovoltaic field on the DC side and connected to the grid on the AC side Each multi string inverter will work independently of the others and will supply the grid with the maximum power available from its section of photovoltaic panels Notes on the sizing of the system Decisions about how to structure a photovoltaic system d
95. rk environment so that it is well litand has sufficient spaces to ensure they have an escape route In the installation consider or make sure the noise emitted based on the environment is not such that it exceeds thresholds allowed by law less than 80 dBA 31 000018AG A N POWEr ONne A Renewable Energy Solutions Residual Risks risks that cannot be eliminated preventing them Table of residual risks RISK ANALYSIS AND DESCRIPTION Noise pollution due to installation in unsuitable environments or where Staff work permanently Suitable local ventilation that does not cause overheating of the equip ment and is sufficient not to create discomfort to people in the room External weather conditions such as water seepage low temperatures high humidity etc Overheating of surfaces at temperature transformers accumulators coils etc can cause burns Also be careful not to block the cooling slits or systems of the equipment Inadequate cleaning compromises cooling and does not allow the safety plates to be read Accumulation of electrostatic energy can generate hazardous discharges Inadequate training of staff During installation temporary fixing can involve risks of unhooking from the bracket 01 Accidental disconnection of the quick fit connectors with the equipment in operation or wrong connections can generate electric arcs 39 Safety and accident prevention 3 De
96. s Some Er ror Warning codes could be not used depending of installed inverter model Display Display Alarm Message Codes Ground Red LED Ground Fault Fault Degauss Degaussing error State fail Input OC E001 Input Overcurrent Input OV E002 Input Overvoltage No E003 Internal Parameters Parameters Error Cause The alarm is generated when a ground leakage current is detected in the DC section of the system The alarm is accompanied by the lighting up of the red LED on the front of the inverter The alarm appears when the inverter input current exceeds the set overcurrent threshold This alarm is indicated when the inverter input voltage coming from the PV generator exceeds the operating threshold The alarm is triggered before reaching the absolute threshold beyond which the inverter will be damaged When the inverter input voltage exceeds the Over Voltage threshold the inverter will not start because of the generation of the alarm The main microcontroller is unable to correctly initialize the two DSPs booster stage and inverter stage This is usually due to communication problems on the internal bus of the inverter 79 Solution If possible measure the insulation resistance using a megohmmeter positioned between the photovoltaic field positive terminal short circuited to the negative pole and ground If the measured value is less than 1 megaohm the photovoltaic generator must be checke
97. s does not require special tools Strip the end of the cable to which you are going to attach the connec tor after making sure it conforms to the limits of the connector Insert the cable in the connector until you hear a locking click Fully tighten the knurled ring nut for optimum locking WARNING To prevent damage to the equipment pay particular attention to the pola rities when wiring the cables MULTICONTACT or equivalent The installation of Multicontact connectors requires crimping that must be carried out using a suitable tool Strip the end of the cable to which you are going to attach the connec tor after making sure it conforms to the limits of the connector Attach the terminal to the conductor using the special crimping pliers Insert the cable with terminal into the connector until you hear the click that indicates the terminal is locked inside the connector Firmly tighten the cable gland to finish the operation 44 000063AG AN POWEr ONne A Renewable Energy Solutions Installation 5 Grid output connection AC side For the connection to the inverter grid you need 3 connections ground neutral and phase The ground connection to the inverter is obliga tory Plug the grid cable into the inverter using the specific AC cable gland 08 and connect the AC output screw terminal b
98. spite the warnings and safety systems there are still some residual These risks are listed in the following table with some suggestions for SUGGESTED REMEDY Reassess the environment or the place of installation Restore suitable ambient condi tions and air the room Maintain ambient conditions suit able for the system Use suitable protective equipment or wait for the parts to cool before switching on the equipment Clean the equipment plates and work environment adequately Ensure the devices have dis charged their energy before work ing on them Ask for a supplementary course Pay attention and prevent access to the installation area Pay attention and prevent access to the installation area 000019BG AN POWEr One A Renewable Energy Solutions General conditions 4 4 Lifting and transport Some specifications are not applicable to small equipment or components A fi Transport and handling 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 During handling do not make any sudden or fast movements that can create dangerous swinging Power One usually stores and protects individual components by suitable means to make their transport and subsequent handling easier but as a rule it is necessary to tur
99. ster b16 Input current DC b15 Input voltage DC b14 Indicates that the PV generator voltage is higher than the Vstart of the inverter b24 Indicates the channel which refers to the values of voltage and input current displayed In the case of independent channels the display parameters is cyclic channel 1 or 2 v 57 000065 AN POWEr ONne A Renewable Energy Solutions Instruments 6 Description of the keypad Through the combination of LED panel 14 buttons under the display 12 values can be set or data can be displayed by scrolling them some LEDs are also shown on the keypad 13 for status conditions Power one Renewable Energy Solutions cH TB Poner Inverter OK amp emm While pressing the ENTER key d ILI kW 01 Feb 11 26 Md mm vo TERME the cyclic display parameters can 2503 lios si 2567 5 ii Locked amp Cyclic ALARM GFI DOWN ENTER 14 This allows you to confirm the operation or to enter the set data item This allows you to read the data on the display by scrolling down wards or to decrease the set value to correct it during data entry This allows you to read the data on the display by scrolling upwards or to increase the set value to correct it during data entry This button allows you to exit a mode The GF ground fault LED indicates that the inverter has detected a ground fault on the DC side of the photovoltaic generator When
100. t F gt Set F Set Uconn gt Set Uconn lt Set Fconn gt Set Fconn Set Time U Set Time U Set Time F gt gt Set Time F Set Time U Parameter description Grid Over voltage OV threshold extended range Grid Under voltage UV th reshold extended range Grid Over Frequency OF th reshold extended range Grid Under Frequency UF th reshold extended range Grid Over voltage OV threshold strict range Grid Over voltage OV threshold measure of the average value of the mains voltage Grid Under voltage UV th reshold strict range Grid Over Frequency OF th reshold strict range Grid Under Frequency UF th reshold strict range Max voltage admissible during grid pre connection phase Min voltage admissible during grid pre connection phase Max frequency admissible during grid pre connection phase Min frequency admissible during grid pre connection phase Intervention time of Over Voltage U gt gt protection Intervention time of Under Volta ge U lt lt protection Intervention time of Over Fre quency F gt gt protection Intervention time of Under Fre quency F lt lt protection Intervention time of Over Voltage U gt protection f 1 Setting range Unom Unom x 1 3 10V Unom Fnom Fnom 5Hz Fnom 5Hz Fnom Unom Unom x 1 3 Unom Unom x 1 3 10V Unom Fnom Fnom 5Hz
101. the cover by tightening the 4 screws on the front to the torque indicated in the specifications Remove the protective film lo cated on the front Installation 5 000061AG AN POWEr ONne A Renewable Energy Solutions Installation 5 Operations preparatory to PV generator connection Checking the correct polarity of the strings Using a voltmeter check that the voltage of each string observes the correct polarity and falls within the input voltage limits accepted by the inverter see technical data If the voltage without load of the string is near the maximum value ac cepted by the inverter it must be borne in mind that with low ambient temperatures the string voltage tends to increase in a different way ac cording to the photovoltaic module used In this case it is necessary to carry out a check of the sizing of the system and or a check on the connections of the modules of the system e g number of modules in series higher than the design number Checking of leakage to ground of the photovoltaic generator Measure the voltage present between positive and negative pole of each string with respect to ground If a voltage is measured between an input pole and ground it may be that there is a low insulation resistance of the photovoltaic generator and the installer will have to carry out a check to solve the problem Do not connect the strings if a leakage to ground has been found because the inverter
102. this fault is detected the inverter immediately disconnects from the grid and the relevant error warning appears on the LCD display Indicates that the inverter has detected an anomaly The type of problem is shown on the display Indicates that the inverter is working correctly This LED flashes while the grid is being checked when the unit is commissioned If a valid grid voltage is measured the LED stays on continuously provided there is sufficient sunlight to activate the unit If not the LED continues to flash until there is sufficient sunlight for activation During this phase the LCD display shows the Waiting for message Indica che l inverter funziona correttamente In their various possible multiple combinations the LEDs can indicate conditions that are different from the original single one see the various descriptions given in the manual In their various possible multiple combinations the buttons allow you to obtain ac tions that are different from the original single one see the various descriptions given in the manual 58 000031AG A N POWEr ONne A Renewable Energy Solutions 7 Operation General conditions Before checking the operation of the equipment it is necessary to have a thorough knowledge of the INSTRUMENTS chapter and the functions that have been enabled in the installation The equipment operates automatically without the aid of an operator operating state is co
103. to the grid taking power from it until 9 01 MPPT This section of the menu allows you to set the parameters of the maxi mum power point search MPPT function This function is useful when there are shadowed areas on the PV generator that can create several maximum power points in the work curve MPPT amplitude the amplitude of the interference introduced in DC is chosen through the setting of this parameter to establish the optimal working point There are 3 settings to choose from LOW MEDIUM HIGH The default setting is MEDIUM Multi max scan through the setting of this parameter you can enable disable the scan decide the frequency with which the scan is carried out and override it manually Enable Disable Enables Disables the scan for identifying the maxi mum power point of the system 74 000068CG poke one 7 A Renewable Energy Solutions Scan Interval this allows you to set the interval of time between scans It must be borne in mind that the shorter the interval between scans the greater will be the loss of production due to the fact that during the scan energy is transferred to the grid but not at the maximum power point Each scan takes 2 seconds Manual Scan Allows you to start asynchronously to the periodicity set through the Scan Interval the manual scanning of the photovoltaic gen erator for peak point tracking Alarm Msg This section of the menu allows you to enter a customi
104. witch 08 AC cable gland 09 AC output screw terminal block 10 DC input connectors 11 anticondensation valve 12 display 13 keypad 14 LED panel 15 heat sink 1 000050BG PowWer one Introduction and general information A Renewable Energy Solutions Graphical representation of references 1 000004AG Power one Introduction and general information 1 A Renewable Energy Solutions The document and who it is for Purpose and structure of the document This operating and maintenance manual is a valid guide that will enable you to work safely and carrying out operations necessary for keeping the equipment in good working order The document was originally written in ITALIAN therefore in the event of inconsistencies or doubts please ask the manufacturer for the original document List of annexes In addition to this operating and maintenance manual if applicable or on request the following attached documentation is supplied EC declaration of conformity quick installation guide service manual for the installer warranty WARNING Part of the information given in this document is taken from the original documents of the suppliers This document contains only the information considered necessary for the use and routing maintenance of the equipment Staff characteristics The customer must make sure that the operator has the necessary skill and training to do his her job Staff in charge
105. witch of type B is not required according to IEC 60755 A 2 Note The first section of the article in reference to the simple separation between the AC side and the DC side considers isolation transformers that operate at low frequency grid frequency Aurora Power One inverters with a high frequency transformer are equipped with an isolation transformer for each of the DC DC converters which operates at high frequency switch over frequency of the convert er This transformer allows for high frequency galvanic isolation between the DC and AC side of the system In addition to this the inverters include protection mechanisms so that they cannot input ground fault currents Power One Italy S p A declares that the Power One Aurora high frequen cy isolated inverters are in terms of their construction continuous ground fault currents and therefore in accordance with Article 712 413 1 1 1 2 of Section 712 of CEI 64 8 7 Norms there is no requirement that the dif ferential installed downstream of the inverter is type B in accordance with IEC 60755 A2 Power One recommends the use of a switch with type A or AC differential magneto thermal protection with An 30mA sensitivity 41 000062AG AN POWEr One A Renewable Energy Solutions Installation 5 Inverter Components For both of the inverter 02 models 2 kW or 2 5 kW two different set ups are available UNO X X I OUTD Standard version UNO X X I OUTD S Version
106. zed message that is displayed on the display immediately after the specific error message has been displayed Enable Disable Enables Disables the display of customized messages Writing of Msg you can write your customized message that can be written on two lines of 16 characters each To write the message use the UP DOWN arrows to choose the character you wish to enter and press ENTER to confirm 75 000068CG poke ono 7 A Renewable Energy Solutions Information menu Product ID Allows you to display the product identification code Serial No Allows you to display the serial number of the equipment Firmware Allows you to display the revision of the firmware installed in the equip ment Country selector Allows you to display information regarding the grid standard set with the rotary selectors Current value Displays the set grid standard New value If the position of the rotary switches is changed a new grid standard is therefore selected during operation the new stand ard selected will be displayed but will be made effective only after the equipment has been switched off and then on again and only if the time remaining for carrying out this operation has not expired 24h of opera tion Set new Allows you to confirm set the new grid standard set in the New value section of the previous menu When this function is used there will be no correspondence between the standar

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