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1. 17 3 3 BEE 23 PART 4 OPERATIONS GUIDE Kravene 33 4 1 MONITORING AND DATA TRANSMISSION set 33 4 2 CORINT SUTIN 9 XU eee 97 4 3 DESCRIPTION BO EE 41 4 4 USING THE AURORA MANAGER TL SOFTWARE ee 51 4 5 ADJUSTMENTS OF DISCONNECTION PARAMETERS eese tentent tente ntn tenete tente ttn toten tente tn sentono sins 55 PARIS HEH EE 60 5 1 ARC FAULT DETECTION SELF TEST ERRORS A MODELS ONLNT testen 60 5 2 E CHE ERROR TR 61 5 3 THE POWER ONE SENER 69 PARTITO MAINIENANE eege 70 6 1 POWER DOWNPROCEDUR E S 70 6 2 FOUTNE NM TEN Ne 71 6 3 CR2032 LITHIUM BATTERY REPLACEMENT Linnie pa entibus ruunt 71 6 4 STORAGE AND DISMANTLING ee 72 PARI APPENDIX twn SS nnn 73 7 1 ik EDI ALDATA rr PM 73 7 2 SOTEM DE CRIP MO o eC 83 7 3 INDES OFTICURESAND NK E 88 power one A MEMBER OF THE ABB GROUP Page 3 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 NA 2 2 PART1 INTRODUCTION amp SAFETY 1 1 INTRODUCTION This manual contains important instructions for the Power One AURORA UNO Inverter transformerless models indicated on the front cover of this manual that shall be followed during installation and maintenance of the inverter THE INSTALLER MUST READ THIS DOCUMENT IN ITS ENTIRETY BEFORE INSTALLING OR COMMISSIONING THIS EQUIPMENT 1 1 1 PURPOSE
2. YES NO direct YES sunlight Ly d do gog I pao 3 00 It I l po E f k 1 I ETATE 1 Poy tou y i Li a tory i o pod pr A E1 l i I I I l I Le I per 1 4 We vn rn e rn v e e e e mm wm mm em rn em vm mm Y NO air flow YES NO heavy snow restricted accumulation Figure 2 4 Outdoor installation examples Gr One A d A MEMBER OF THE ABB GROUP Page 16 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 NA 2 2 PART 3 MOUNTING amp WIRING 3 1 WALL MOUNTING The Aurora inverter should be mounted vertically as shown in Figure 2 1 and Figure 2 4 above Always follow the relative mounting instructions provided in this section Follow the steps below for mounting the Aurora inverter If the installation is done on a concrete wall the wall plugs provided should be used and the mounting holes in the wall should have a 10mm diameter and 75mm depth When the wall is made of a different material other than concrete the installation should be done using adequate mounting material Power One recommends always using stainless steel screws Included in the shipping package is a mounting kit with four screws and four wall plugs provided for mounting the metal bracket to a concrete wall The screws should be mounted in the four holes present in the bracket shown as position B in Figure 3 1 below If needed to ensure stability of the inverter use t
3. 7 WA d MEMBER OF THE ABB GROUP Page 21 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 3 Mounting and Wiring NA 2 2 The A versions include an Arc Fault Detector AFD mounted on the rail in the wiring box Figure 3 8 Front switch wiring box details with AFD Table 3 2 Switchbox Internal Parts Summary 0 e S DC power cable opening with plastic threaded DC conduit entry KOs and 1 trade size o lan plug trade size 34 1 B Ac conduit entry KOs trade size 4 1 3 Ac ACgrid output terminals Notet output ACgrid output terminals Notet Note 1 joc Disconnect Switch Em AC main ground eo Note 2 c qw cable opening with plastic threaded L Array PE ground Note 1 plug trade size AC power cable opening with plastic P M D M AFD board A models only Note 3 threaded plug trade size 1 MPPT1 DC Array MPPT 1 input Note 1 MPPT2 DC Array MPPT 2 input Note 1 L3 1 Front switch model array wiring and ground terminals are spring pressure type Use tool provided to open the terminal and insert wire These terminals accept 16 6 AWG wire Front switch model AC output terminals are spring pressure type Use tool provided to open the terminal and insert wire These terminals accept 14 4 AWG wire Bottom switch model array wiring and AC output terminals use a standard terminal block
4. A MEMBER OF THE ABB GROUP Page 69 of 89 The MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 5 Troubleshooting NA 2 2 5 3 THE POWER ONE SERVICE CALL Call Power One Technical Support at 877 261 1374 The following information is necessary to initiate a call with Technical Support The model number serial number and week of production can be found on the display menu of the inverter or on the product label Model number Serial number Week of production State of LED e Status of light s e Steady or flashing e Error message or code Identify the System structure e Information on the Photovoltaic Field e Brand and model of photovoltaic panels e Maximum array voltage and current values e Number of strings in the array e Number of panels for each string Provide a description of the conditions e Can the fault be reproduced If so how e s the fault cyclical in nature If so how often e Was the fault apparent at the time of installation e If so has it worsened e Describe the atmospheric conditions at the time the fault appears appeared power one A MEMBER OF THE ABB GROUP Page 70 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 NA 2 2 PART6 MAINTENANCE GUIDE Checking and maintenance operations must be carried out by specialized staff assigned to carry out this work DO NOT allow the equipment to be used if problems of any kind are found Maintenance operations must be carried out with
5. e Do not install inverter where it could be exposed to direct sunlight to avoid unwanted power reduction due to an increase in the internal temperature of the inverter e Donotinstall in small closed spaces where air cannot circulate freely e Due to acoustical noise about 50dBA at 1 m from the inverter do not install in rooms where people live or where the prolonged presence of people or animals is expected e To avoid overheating always make sure the flow of air around the inverter is not blocked e Do not install in places where gases or flammable substances may be present 2 2 2 INSTALLATION POSITION Install on a wall or strong structure capable of bearing the weight Select a well ventilated location sheltered from direct sun radiation Choose a location that allows unobstructed airflow around the inverter Do not install in small closed rooms where air 6 150mm cannot circulate freely Install in safe place where all switch handles and controls remain easy to reach and meet height requirements of the applicable electrical code Install at eye level so the display and status LEDs can be easily seen Ensure sufficient working area in front of the inverter to allow removal of the wiring box cover and easy access for servicing the inverter 6 150mm p um 6 150 mm BCE 20 500mm Figure 2 1 Minimum Clearances around the AURORA Inverter power one A MEMBER OF THE
6. power o TE MEMBER OF THE ABB GROUP Page 83 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 7 Appendix NA 2 2 7 2 SYSTEM DESCRIPTION AURORA UNO grid tied inverters provide the capability to supply the utility grid with energy obtained from PV panels To use the DC generated by a Photovoltaic field efficiently it must be transformed into alternating current AC via a conversion process known as DC AC inversion This process is the basis of all grid tied inverters and is achieved very efficiently by the AURORA Inverter without the use of rotating elements When the inverter output is connected in parallel to the utility power grid the alternating current output from the inverter flows directly into the distribution circuit and is connected in turn to the public distribution utility grid The photovoltaic energy system can thus feed all the connected user electrical loads e If the energy supply from the photovoltaic system is lower than the user s load requirement the quantity of energy necessary to guarantee normal functioning of the connected appliances is taken from the public distribution network e ftheenergy supply from the photovoltaic system is greater than the user s load requirement i e an excess of energy is produced it is sent directly into the public network becoming available to other users Depending on prevailing codes and regulations of the installation area the energy produced can be sold t
7. 5 If the grid check routine does not give a positive result the unit will repeat the procedure until all grid voltage frequency parameters and grid configuration are found or changed to be within the specified range During this process the green LED will keep flashing 4 2 1 CONNECTION OF THE SYSTEM TO THE GRID The followin i itializi g two screens are displayed at Se ane Initializing Inverter start up Please wait When waiting for sunlight Waiting Sun the POWER LED flashes While the system checks for grid connection to be established Missing Grid the ALARM LED turns steady YELLOW while the POWER LED flashes GREEN power on A d A MEMBER OF THE ABB GROUP Page 38 of 89 The MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 4 Operations Guide NA 2 2 As soon as the Missing Grid and Waiting Sun conditions are met successfully the inverter is connected and displays the following For A versions ONLY the display shows the AFD board self test running and results If the self test results are OK the inverter will continue to Next Test ARC connections Sensor OK If a potential problem on the AFD board is detected the self test will result in error Refer to Table 5 1 in Troubleshooing to clear the error and possible solutions AF Self Test E053 All versions will display the following screens during connection This displays the time seconds remaining to complete the output Next connection
8. A MEMBER OF THE ABB GROUP TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Page 84 of 89 Part 7 NA 2 2 Appendix HOLS INIH Wida AT CBS VIIHINV HLYON HOd G1n0 t IAd ONY AGLNO 9 E IAd GLNO 0 E IAd dO WVH5VIG 32018 NOISH3A QHYONVIS A IN EF E zm ms rm rm Pu I i IK SE CE UNI CILINI i I l I I i I I HE LA I i i ILENI Figure 7 13 Block diagram WEP 080 A d A MEMBER OF THE ABB GROUP Page 85 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 7 Appendix NA 2 2 The MPPT circuitry has a specific operating range and the arrays must be designed to operate within this range In order to properly operate the AURORA Inverter proper array sizing must be completed and the results translated to a connectable system Array sizing is based on many variables and must be done for every array as specifications are dependent on the type and quantity of PV panel used and environmental factors such as expected high and low ambient temperatures to which the array will be subjected as well as the orientation of the array panels to the sun In addition to properly sizing the array to match the inverter to which it is connected the sizing of the interconnecting wiring is critical to ensure safe operation and high reliability In North America the wire sizing for the array and the grid interconnection are regulated and controlled by electric and building codes G
9. The following section provides descriptions of each of the available submenus Address Selecting Address enables the bus addresses for the inverter connected to the RS485 communication bus to be set to an appropriate value f e 3 Address values are assigned using any value in the range 2 to p cv 64 Press the UP and DOWN keys to scroll through numbers l 63 Press ENTER when desired number is displayed ER Auto address 1 and can be used only once default address is set at 2 gt Address Display Set Service New Password Cash Time Language Vstart Alarm Remote ON OFF UV Prot time MPPT Scan EN DIS Scan Interval Alarm Message Set VGrid NOTE If wiring multiple units using a daisy chain configuration do not select AUTO configuration power on A d A MEMBER OF THE ABB GROUP Page 46 of 89 The MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 4 Operations Guide NA 2 2 Display Set Light Selecting this function displays the submenu enabling the user to set gt ine display feature parameters Buzzer 1 Light select this menu choice to display light settings C Mode Select MODE to set the display backlighting Intensity ON Light always ON OFF Light always OFF hund AUTO Light turns ON every time a key is pressed and stays on for 30 Auto seconds before fading OFF Select INTENSITY and enter to adjust the backlighting intensity
10. Notes 1 Terminals accept wire range up to 6AWG Refer to local code for appropriate wire size torque to 13in lb 2 Terminals accept wire range up to 44AWG Refer to local code for appropriate wire size torque to 13in lb power on e A MEMBER OF THE ABB GROUP Page 23 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 3 Mounting and Wiring NA 2 2 3 3 ELECTRICAL CONNECTIONS All PV source and output circuit conductors must have disconnects and over current protection devices OCPD complying with NEC Section 690 Part Ill and Section 690 9 A The PV source conductors must be Listed PV wire per NEC 690 35 PV output conductors must consist of sheathed jacketed multi conductor cables or installed in an approved raceway and must be isolated from the enclosure and system grounding as required by NEC 690 35 and is the responsibility of the installer The maximum allowable input short circuit current limit of the photovoltaic array for each MPPT input channel is 20Adc for the 3 6kW 3 8kW 4 2kW inverter and it is 12 5Adc for the 3 0kW inverter To prevent electrocution hazards all the connection operations must be carried out with the external AC disconnect switch downstream of the inverter grid side open and locked out This section describes initial installation procedures for DC and AC wiring connections This version has an integral DC disconnect switch and associated switchbox e Typical system co
11. The AURORA Inverter is a photovoltaic inverter that converts direct current of a connected PV array into alternating current and feeds that power into the AC utility grid This AURORA Inverter is designed for outdoor use but can be used indoors if installed to specified environmental and mounting parameters stated in this manual and adherence to the National Electric Code See Environmental Conditions below and General Installation Conditions in section 2 2 for more information 1 2 3 1 Conditions of Use with respect to ground it can be used only with photovoltaic modules that do not require one This inverter utilizes a transformerless design and requires connected array s to be floating of the terminals to be grounded The DC and AC operating currents MUST NOT exceed the limits documented in the technical specifications The inverter is certified for use only with photovoltaic arrays connected to its input channel s Do not connect batteries or other types of power sources The inverter can be connected to the utility grid in qualified countries only The inverter can only be used if all the technical requirements in this manual are observed and applied 1 2 3 2 Environmental Conditions Adverse environmental conditions can lead to a reduction in performance The equipment should be installed outdoors but only in environmental conditions indicated in this manual Care must be taken to provide adequate ventilation if installed i
12. The Settings menu allows access to configuration and modification of the basic inverter settings See section 4 2 7 for instructions to view and adjust the parameters Figure 4 1 Settings submenus ram ET GU A MEMBER OF THE ABB GROUP Page 42 of 89 The MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 4 Operations Guide NA 2 2 The Statistics menu is a view only display of internally logged inverter data See section 4 2 5 1 for a description of each parameter in the submenu Statistics Lifetime pp Last 7 days Partial Last month Today m Last 30 days Last xxx Last 365 days User period Enter Start End Date EN Figure 4 2 Satistics submenus The INFO menu provides information about the inverter A complete description of the submenus can be found in section 4 2 5 3 INFO Part No Serial No Firmware Figure 4 3 Information submenus Display Key Operation using Programming Controls J Press ENTER to open a selection or confirm an entry t Press the UP and DOWN keys to move through menu items or increase descrease numerical settings Press the ESC key to access the three main menus go back to the previous menu or go back to AN the previous digit to be edited PROGRAMMING CONTROLS J TWO LINE LED
13. The purpose of this document is to support the qualified technician who has received training and or has demonstrated skills and knowledge in construction to install and maintain this Power One AURORA UNO Photovoltanic PV Inverter This manual does not cover any details concerning equipment connected to the inverter such as the solar modules Information concerning the connected equipment is available from the respective manufacturer 1 1 2 MAINTENANCE AND SERVICE Maintenance and service procedures must comply with the manufacturer s documentation For more detailed information see Maintenance Part 6 Call Power One Customer Service at 877 261 1374 for a list of qualified service contractors 1 1 3 FIGURES AND IMAGES IN THIS MANUAL The photos in this manual may differ slightly from the final model shipped and the color of the components may not match those illustrated however the information is still applicable 1 1 4 WARRANTY INFORMATION After inspecting the AURORA UNO Inverter it is necessary to fill out the warranty information on this unit and submit it to Power One Submitting this information will register the unit with the manufacturer and the owner will receive technical updates regarding this Power One photovoltaic inverter Warranty Conditions can be found on the Power One Renewable Energy website located in the download section of the AURORA UNO inverter product page 1 1 5 ADDITIONAL INFORMATION More information o
14. press ENTER to open the submenu As soon as a test item is selected the display shows power on A d A MEMBER OF THE ABB GROUP Page 48 of 89 The MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 4 Operations Guide NA 2 2 During the test the display gives test progress indication If the test passes the display shows one of the three screens below depending on which test item was selected V measured voltage T time necessary to take the measurement F measured frequency T time necessary to take the measurement I measured current T time necessary to take the measurement If the test fails the same information as above is returned with the message Test Fail in place of Test OK Alarm This function accesses the inverter s alarm function which is used for external controls or for example to activate a visual and or audible alarm The function has two different modes of operation Select the desired mode using the UP DOWN arrow keys and press ENTER to C Production open the relevant submenu Fault The function controls a set of dry relay contacts which can be wired by the user as either normally open N O or normally closed N C contacts are rated at 250V 1A The terminals for this function are accessed via the front panel and shown below in Figure 4 3 The two operational modes are described below 1 PRODUCTION In this mode the relay is activated only when the inverter is connected to the grid
15. wiring box details 20 Figure 3 7 Bottom switch wiring box details 20 Figure 3 8 Front switch wiring box details with AFD 21 Table 3 2 Switchbox Internal Parts Summanm 21 Table 3 3 Bottom switch wire size for terminal block and ground Iug 22 Figure 3 9 Main Inverter Connection Board 22 Figure 3 10 Electrical NN 23 Figure 3 11 Front switch Independent confteuratton 24 Figure 3 12 Bottom switch Independent configuration ccccccsssseccccseseececceesececeeceuseeceseseaeecesseeuecessauaeeeessagaeeeeees 24 Figure 3 13 S1 Switch in IND position independent mode rrrrrrrnnnnnnnnnnrnrrnnrnnnnnnnrrrnrnrnnnnnnnrrrrnnrnnnnnnenernnnnnnnnneeesene 25 Figure 3 14 S1 Switch in PAR position parallel model 25 Figure 3 15 Front switch jumpers parallel MPPT input configuration S versions only 26 Figure 3 16 Bottom switch jumpers for parallel MPPT Configuration and Front switch A versions only 26 Figure 3 17 Front switch AC Grid terminal ccccccsseccccssscccceeeccceeccccescccseuseeseueeeesescessaeeceseauseeseuseessuseessaesessenseess 27 Figure 3 18 Bottom switch AC grid terminal sssnnsssensssenssserssssrsssrrsssrrsssresssrrsssreessrressreesssressreessreessrerssreesseeesseeense 27 Table 34 AC Grid SA TAO M 27 Tale 3 5 RIES CON EC 29 Figure 3 19 Standard RS485 connection cccsseccccsssceccene
16. 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 3 Mounting and Wiring NA 2 2 3 2 2 REMOVING THE FRONT COVERS To access the wiring terminals in the inverter and switchbox the inverter cover and switchbox cover must be removed Refer to Figure 3 2 below e Toremove the front cover of the inverter compartment loosen the four captive screws indicated using the Torx screwdriver provided e To remove the front cover of the switchbox loosen the four captive screws indicated using the Torx screwdriver provided in the box with the inverter e When connection operations are completed and the unit is connected re install the front covers and tighten the cover screws with at least 1 5Nm 13 2 in lbs torque to ensure proper waterproof sealing Inverter cover Torx 20 screw 4pl Switchbox cover Torx 20 screw 4pl Figure 3 2 Front Access Panel Location A WARNING Before removing front covers the DC switch must be in the OFF position poer one NA MEMBER OF THE ABB GROUP Page 19 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 3 Mounting and Wiring NA 2 2 3 2 3 AURORA SWITCH BOX DESCRIPTION To access the wiring components inside the switchbox loosen the four cover panel captive screws H and remove the cover panel win eC y i i eC es Figure 3 3 DC switchbox with front switch external chassis view Figure 3 4 DC switchbox with bottom switch external chassis vie
17. ABB GROUP Page 14 of 89 Technical Manual PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 2 Unpack and Select Installation Location NA 2 2 For multiple inverter installations position the inverters side by side or in a staggered arrangement so heat dissipation does not affect other inverters Maintain minimum clearances shown s S S FG Figure 2 2 Side by side arrangement with minimum clearances around the AURORA Inverter Acceptable Arrangement Unacceptable Arrangement Figure 2 3 Staggered arrangement avoiding heat from other inverters Der gue A d A MEMBER OF THE ABB GROUP Page 15 of 89 Technical Manual PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 2 Unpack and Select Installation Location NA 2 2 Tilted mounting 5 from vertical is acceptable but will reduce heat dissipation and may A result in self derating When possible mount the AURORA UNO Inverter vertically For other mounting orientations consult with Power One Do not mount the AURORA Inverter where exposed to direct sun radiation or any other heat source This includes heat generated by other AURORA Inverters otherwise the inverter will self protect resulting in derated power output When the ambient temperature rises above 113 F 45 C the inverter may self derate the output power For full power of AURORA UNO Inverter no derating be sure the airflow through the heat sink is clear Blockages will result in less than expected power output I
18. Fault poer one The MANUAL PVI 3 0 3 6 3 8 4 2 TL Troubleshooting Causes 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 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
19. For example if the N O Normally Open contact is chosen the contact will remain open closed as long as the inverter is not connected to the grid Once grid connection occurs and the inverter begins to export power the relay switches its status and closes opens Upon disconnection from the grid the relay contact returns to its rest position i e open closed 2 FAULT In this mode the alarm relay triggers when the system logs a fault condition based on the error codes E code described in Section O For example if the N O Normally Open contact is chosen the contact will remain open closed as long as no E code fault is logged E code faults disconnect the inverter from the grid When any E code is logged the relay will change state and stay latched until the next successful grid reconnection at which time it is reset NOTE the alarm function does not switch when warning codes W code are logged power on A d A MEMBER OF THE ABB GROUP Page 49 of 89 The MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 4 Operations Guide NA 2 2 p Figure 4 3 Alarm and Remote Contacts Terminal Block Remote Control connects into the R terminal associated with the Remote ON OFF function This function is not available for CA models with AFD the signal line from the AFDI module Selecting this function accesses the remote ON OFF function used to disable the inverter operation by an external switch or an external contr
20. One Service E F A d A MEMBER OF THE ABB GROUP Page 67 of 89 The MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 5 Troubleshooting NA 2 2 Display Message Causes Solution E050 An electrical arc has been detected on DC Check DC cables and connections to identify the source of Arc Fault cables This error locks the inverter in a possible arcing Press and hold ESC on the display in order A version ONLY disconnected state to unlock the inverter and start the Arc Fault self test DC Arc fault detected E053 Self Test performed by AFD board failed Press and hold ESC on the display in order to unlock the AF Self Test The board will try another self test after inverter To manually start the self test the procedure A version ONLY user turns inverter off and on 1 Turn off the inverter switching off both DC and AC Arc fault detector AFD switches and 2 Turn on both the DC and AC switches sensor Self test failed waiting for display communication of self test result If the problem persists after switching the inverter off and on contact Power One Service W001 Insufficient irradiation Wrong Check the inverter input voltage configuration of the PV generator or a If it does not exceed the Vstart check that there is configuration at the limit as regards the sufficient irradiation and that the composition of the minimum input voltage of the inverter system is correct If it exceeds the Vstart contact Power Sun Lo
21. PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 1 Introduction and Safety NA 2 2 1 2 2 1 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 Inform the manufacturer about non standard installation conditions Maintenance operations must be carried out according to the Maintenance section in Part 6 of this manual 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 mounted on the product They do not replace the safety regulations enforced in the country of installation and common sense rules Do not use the equipment if any operating anomalies are found Avoid temporary repairs All repairs should be carried out using only qualified spare parts which must be installed in accordance with their intended use and by a licensed contractor or authorized Power One Service representative Liabilities arising from commercial components are delegated to their respective manufacturers 1 2 2 2 Thermal Hazard WARNING Depending upon ambient temperatures during operation and immediately EN following shut down surface temperatures on the cooling fins h
22. PVI 4 2 OUTD US 208V BCG 00681 NA 2 2 80 90 e 220 Vdc 310 Vdc t 480 Vdc 80 90 A d A MEMBER OF THE ABB GROUP Page 79 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL Part 7 Appendix CEC Efficiency 96 0 as gt O c 9 Ww 10 20 30 40 50 60 70 Of Rated Output Power Figure 7 8 Efficiency Curve PVI 4 2 OUTD US 240V CEC Efficiency 96 0 Efficiency 10 20 30 40 50 60 70 Of Rated Output Power Figure 7 9 Efficiency Curve PVI 4 2 OUTD US 277V poer one 9 200 Vdc E 395 Vdc t 480 Vdc BCG 00681 NA 2 2 9 200 Vdc ill 340 Vdc t 480 Vdc 80 90 100 90 A d A MEMBER OF THE ABB GROUP Page 80 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 7 Appendix NA 2 2 7 1 3 POWER DERATING In order to ensure inverter operation under safe conditions both from the temperature and electrical point of view the unit automatically decreases power input to the grid Power derating can occur in two cases Power reduction due to environmental conditions Power reduction and temperature at which it occurs depend on many operating parameters other than ambient temperature such as input voltage grid voltage and power available from the photovoltaic panels The Aurora inverter can thus decrease power output during certain periods of the day according to these parameters In any case the inver
23. Power One Service between the input and the output of the output relay This is an error inside the inverter that cannot be checked externally If the problem appears repeatedly contact Power One Service 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 Wait for the temperatures to which the inverter is 25 C exposed to return within operating range If the problem persists contact Power One Service 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 Power One Service Error inside the inverter The inverter has been switched off remotely remote OFF and remains in 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 Power One Service 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 grid impedance that is too high Towards the end of the timeout the inverter
24. 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 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 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 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 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 Power One Service A d A MEMBER OF THE ABB GROUP Page 65 of 89 Part 5 Display Message E025 Riso Low not shown on the display Low insulation resistance E02 Vref Error Bad internal reference voltage E027 Error Meas V VGrid Measures Fault E028 Error Meas F FGrid Measures Fault E029 Error Meas Z ZGrid Measures Fault E030 Error Meas lleak ILeak Measures
25. The wire range accepted is 18 4 AWG wire There is a copper ground bus bar provided which accepts 14 6 AWG wire 2 Ground terminals for the front switch model are spring pressure type and accept 16 4 AWG wire Use tool provided to open the terminal and insert wire Bottom switch model has two ground connections One copper bus bar that accepts 14 6 AWG wire 3 All wiring instructions for CA models are same as those given for S although AFD board M may not be shown power one A d A MEMBER OF THE ABB GROUP Page 22 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 3 Mounting and Wiring NA 2 2 Table 3 3 Bottom switch wire size for terminal block and ground lug Model PVI 4 2 3 6 3 0 OUTD S US Wire Size AWG Torque Nm In lbs AC and GND field wiringterminals 48 90 1 226 20 DC field wiring terminals 48 90 226 20 Grounding Electrode 48 4 90 X 508 45 3 2 4 INVERTER CONNECTION BOARD Figure 3 9 Main Inverter Connection Board MPPT 1 DC Array MPPT 1 input Note 1 EN External Alarm Out Terminals Note 4 Ee DC Array MPPT2 input Note 1 REL ee RS485 Bus Connection Via Terminals Note 4 O0 ac Grid I AC Grid Output Terminals Note2 Terminals Note 2 S RS485 Bus Connection Via RJ45 Connector Bus Connection Via RJ45 Connector In Mode Input Selector Switch 1 e IND or PAR MPPT Operation EZ RS485 Termination Switch S2
26. Val Economic gain over the last 7 days e CO CO saving over the last 7 days compared to fossil fuels power on C Lifetime Partial Today Last 7 days Last Month Last 30 Days Last 365 Days User period BCG 00681 NA 2 2 After three seconds a A d A MEMBER OF THE ABB GROUP Page 44 of 89 The MANUAL PVI 3 0 3 6 3 8 4 2 TL Part 4 Operations Guide Last Month e E mon Total energy output during the month e Val Money earned during the month e CO2 CO2 saving compared to fossil fuels during the month Last 30 Days e E 30d Total energy output over the last 30 days e Val Economic gain over the last 30 days e CO2 CO2 saving over the last 30 days compared to fossil fuels Last 365 Days e E 365 Total energy output over the last 365 days e Val Economic gain over the last 365 days e C02 CO2 saving over the last 365 days compared to fossil fuels User Period To create a user defined period of time press ENTER from the User period screen to access the submenu below Use the display keys to set the start and end date of the period as follows BCG 00681 NA 2 2 Start 23 June End 28 August e Use ENTER to move from one field to the next from left to right e Use ESC to go back to the previous field from right to left e Press ESC repeatedly to go back to the previous menus e To set the day o Press DOWN to scroll numbers backwards from 31 to 1 o
27. 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 2 measurements on the same parameter carried out by two different circuits BCG 00681 NA 2 2 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 as described in the relevant section checking the ground insulation of the PV generator If the measured value is less than 1 mega ohm the photovoltaic generator must be checked by a technician installer to identify and eliminate the problem If the measured value is greater than 1 mega ohm and the error warning continues to be present contact 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 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 Power One Service This
28. and may lead to possible injury to personnel and or equipment damage 3 2 1 CONSIDERATIONS BEFORE PERFORMING ELECTRICAL CONNECTIONS All field wiring connected to signal circuits WIND ALARM REM amp RS485 should be routed inside the chassis and secured such that it cannot contact either the AC or DC wiring It is prudent to use a UL CSA certified cable e g Belden 3106A and it is good practice to protect the external run of this cable by means of a suitable raceway On the AC output side an automatic magnetothermic switch should be inserted between the Aurora inverter and the distribution grid The models in this manual have an integrated DC switch which is rated for 25A 600V WARNING Always respect the nominal ratings of voltage and current defined in the Appendix Part 7 when designing a system Observe the following considerations in designing the photovoltaic system e Maximum array DC voltage input to each MPPT circuit 600 Vdc under any condition a e The maximum allowable input short circuit current limit of the PV array for each MPPT input channel is 20Adc for the 3 6kW and 4 2kW inverter and 12 5Adc for the 3 0kW e To reduce the risk of fire connect only to a circuit provided with 15A 20A or 25A maximum branch circuit overcurrent protection in accordance with the National Electric Code ANSI NFPA 70 See Maximum AC OCPD requirement in Appendix Table 7 1 power on z A MEMBER OF THE ABB GROUP Page 18 of
29. battery must be carried out when the display shows the error W012 Battery Low or the settings of current date time are frequently reset The battery is visible after removing the AURORA PV Inverter s front panel section 3 2 2 Extract the battery from it s housing with a 30 tilt Insert the replacement battery into the housing at a 30 angle When pushed in the battery should seat into the correct position within the holder Reinstall and tighten the cover screws with at least 1 5Nm 13 2 in lbs torque BATTERY Figure 6 1 Internal battery replacement power on z A MEMBER OF THE ABB GROUP Page 72 of 89 The MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 6 Maintenance Guide NA 2 2 6 4 STORAGE AND DISMANTLING 6 4 1 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 requires a check and in some cases the removal of oxidation and dust that will also have settled inside the equipment if not suitably protected 6 4 2 DISMANTLING DECOMMISSIONING AND DISPOSAL Power One CANNOT be held responsible for disposal of the equipment displays cables batteries capacitors etc and therefore t
30. collects the available data 3 3 3 1 Connection of RS485 and Alarm Contact Route the cables through the switchbox and into the inverter keeping close to right wall of the switchbox chassis e For versions with a front facing switch route the cables through the plastic guides located on the side of the wiring box e For versions with a bottom switch use the plastic clamp to secure to the wall Front switch cable guides Bottom switch cable clamp Refer to Figure 3 19 Locate the terminals for the alarm and monitoring connections within the inverter The following sections provide detail of the RS 485 wiring connections Jn FE j B BE QW A d A MEMBER OF THE ABB GROUP Page 29 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 3 Mounting and Wiring NA 2 2 3 3 3 2 Alarm contact connection Three connections are provided to drive an external alarm comprised of a common contact a normally open contact and a normally closed contact To cable the alarm contact use a three wire or two wire cable 3 3 3 3 Connection of RS485 Serial Port Inside the inverter the communication line cabling can be done using the RJ45 connectors or using the terminal block Figure 3 19 If the terminal blocks are used the signals RTN T R and T R have to be cabled If the RJ45 plugs are used the pin out is reported in Table 3 5 Table 3 5 RJ45 Connectors Signal Description Notes Name MU Noted DO N
31. fall within the limits even when the inverter is connected to the grid contact Power One Service Grid Fail grid voltage parameters outside the limits W009 NA NA Table fail W010 This error appears when there is Error inside the inverter that cannot be resolved with Fan Fail malfunctioning of the fan s inside the external operations If the alarm is persistently repeated Alarm not shown on the inverter In this condition the yellow LED contact Power One Service display thereisonlya On the front panel flashes flashing yellow LED W011 Reading of the internal voltage on the Bulk UV bulk capacitors carried out when the inverter is connected to the grid poer one NA MEMBER OF THE ABB GROUP Page 68 of 89 Part 5 Display Message W012 Battery low Low internal clock battery voltage W013 Clk fail Internal clock failure W017 Jbox fail Fuse control board fail DC string fail W018 SPD DC protection open W019 SPD AC protection open poer one BCG 00681 NA 2 2 The MANUAL PVI 3 0 3 6 3 8 4 2 TL Troubleshooting Solution Causes Replace the battery with the inverter completely switched off disconnect AC side and DC side and be sure to observe the correct polarity Internal battery for maintenance of the date time settings is discharged or damaged The alarm appears when the time shown This is an error inside the inverter that cannot be resolved on the display diff
32. grid CONNECTION and or DISCONNECTION operation during night hours Ensure that no photovoltaic panel can provide energy during this operation Remove the inverter cover see section 3 2 2 Using a voltmeter check voltage levels at the DC input terminals and the AC output cables to ensure no hazardous voltages are present power one A MEMBER OF THE ABB GROUP Page 71 of 89 The MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 6 Maintenance Guide NA 2 2 6 2 ROUTINE MAINTENANCE Routine maintenance is recommended to maintain efficient operation of the PV installation Table 6 1 Recommended Periodic Maintenance e Check that all labels and safety symbols are visible Annual visual e Check that the envrionmental conditions have not changed drastically exposure to inspection weather condition e Check that the inverter or PV panels have not been shaded or isolated by foreign bodies Annusi e Check the tightness of the cable opening plugs opein Check the fitting of the connectors and front covers loose fittings can allow water seepage into the cabinet which may result in short circuits due to humidity e Clean the equipment verigy that no obstructions are present on the fins of the heat sink Annual cleaning If possible use an extractor or suitable pipe cleaners 6 3 CR2032 LITHIUM BATTERY REPLACEMENT A WARNING The replacement of the battery should be performed only by trained personnel The replacement of the internal
33. grid voltage etc STAND BY WITH WARNING The inverter is waiting for sufficient sunlight to start inverter initialization in exporting energy to the grid and checks the parameters presence of a fault or anomaly necessary for connection to the grid However it has Grid is disconnected also detected a condition which could limit its functionality A warning message Wxxx code is on the LCD The inverter is connected to Normal operation The inverter automatically searches and feeding energy to the grid for and tracks the maximum power point MPPT from the PV array RUN with WARNING The The inverter is connected to the grid and an anomaly inverter is connecting and which may be internal or external to the inverter has feeding power to the grid in the been detected A warning message Wxxx is on the presence of an anomaly LCD W warning code Inverter detects an anomaly Wxxx or a fault Exxx in the system which may be internal or external and E error code displays a message INVERTER ALARM A malfunction of the inverter prevents export of power to the grid An error message Exxx is displayed on the LCD Internal Fan fault The inverter does not disconnect and stays operational however critical environmental conditions may create PUN EI BOO X oX over temperature conditions with possible power limitations GRID ALARM There is a Indicates the grid voltage for connection is not present problem with the elec
34. 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 Always use the personal protective equipment provided by the employer and comply with the safety conditions in Part 1 of this manual 6 1 POWER DOWN PROCEDURES THE FOLLOWING OPERATIONS MUST ALWAYS BE PERFORMED before accessing the power 5 input of the Switch Box in order to avoid injury to personnel and or damage to equipment To avoid the risk of electric shock from energy stored in capacitors wait at least ten minutes after disconnecting both AC and DC sides before opening the front panel Once the inverter is wired and connected to the grid use the following procedures to disconnect for maintenance Disconnect from the AC Grid by one of the following methods e Turn OFF the external AC switch e Turn OFF the Over Current Protection Device circuit breaker Disconnect the inverter from the PV array by turning OFF the external DC disconnect switch NOTE When possible turn off the AC switch first however there is no specific order for turning off the two switches Cover all the photovoltaic panels using appropriate cover or perform the
35. to protect any personnel working on the network The AURORA system accomplishes this in full compliance with all prevailing standards and regulations To avoid any possible operation without the presence of an active grid connection the AURORA power one A MEMBER OF THE ABB GROUP Page 87 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 7 Appendix NA 2 2 design includes an automatic disconnection protection system called Anti Islanding All AURORA models are equipped with an anti islanding protection system certified to both US and Canadian standards UL Std N 1741 and CSA C22 2 N 107 1 01 7 2 5 4 Grounding Differential Protection Fault AURORA UNO Inverter has a sophisticated ground protection circuit that continually monitors the ground connection for significant changes in fault current when a ground fault current sufficient to cause safety hazards is detected this circuit shuts down the inverter and illuminates a red LED on the front panel indicating a ground fault condition The AURORA Inverter is equipped with a terminal for the system ground conductors Normally grounded conductors may be ungrounded and energized when a ground fault is indicated resulting in risk of electric shock Test before touching Work on the AURORA UNO Inverter must be carried out by qualified personnel NOTE The protective devices for ground fault detection and control comply with CSA C22 2 N 107 1 01 and UL Std N 1741 7 2 5 5 AD
36. 0638 BCG 00648 Added part number description of AFD and 3 8kW BCG 00681 Tee EE Changed knockout sizes in switchbox knockout sizes in switchbox NA 2 1 Rev AA BCG 00681 Tech docs 08 99 2013 Corrected REMOTE CONTROL MM instructions NA 2 2 Rev AA p49 power on A d A MEMBER OF THE ABB GROUP
37. 1 3 Assembly Warnings Prior to installation inspect the unit to ensure absence of any transport or handling damage which could affect insulation integrity or safety clearances failure to do so could result in safety hazards Assemble the inverter per the instructions in this manual Use care when choosing installation location and adhere to specified cooling requirements Unauthorized removal of necessary protections improper use incorrect installation and operation may lead to serious safety and shock hazards and or equipment damage power on e Ad A MEMBER OF THE ABB GROUP Page 6 of 89 Part 1 Technical Manual PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Introduction and Safety NA 2 2 1 2 1 4 Electrical Connection Warnings This grid tied inverter system operates only when properly connected to the AC utility grid Before connecting the services of the AURORA grid tied inverter to the AC utility grid contact the local power distribution company to receive the appropriate approvals This connection must be made only by qualified technical personnel A Wiring methods used should be in accordance with the National Electric Code ANSI NFPA 70 NEC Canadian Electric Code CEC and or other local codes and regulations WARNING To reduce the risk of fire connect only to a circuit provided with 15A 20A or 25A maximum branch circuit overcurrent protection in accordance with the NEC See Maximum AC OCPD requirement in Ap
38. 3 8 4 2 TL Appendix CEC Efficiency 96 0 6 200 Vdc 340 Vdc 14 480 Vdc 20 30 40 50 60 70 80 90 of Rated Output Power Figure 7 2 Efficiency Curve PVI 3 0 OUTD US 240V CEC Efficiency 96 0 9 200 Vdc E 390 Vdc t 480 Vdc 20 30 40 50 60 70 80 90 of Rated Output Power Figure 7 3 Efficiency Curve PVI 3 0 OUTD US 277V A d A MEMBER OF THE ABB GROUP BCG 00681 NA 2 2 Page 77 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 7 Appendix NA 2 2 CEC Efficiency 96 0 as gt Q c go Lu e 220 Vdc E 310 Vdc 14 480 Vdc 10 20 30 40 50 60 70 80 90 of Rated Output Power Figure 7 4 Efficiency Curve PVI 3 6 OUTD US 208V CEC Efficiency 96 0 Efficiency 200 Vdc a 340 Vdc 480 Vdc 10 20 30 40 50 60 70 80 90 100 of Rated Output Power Figure 7 5 Efficiency Curve PVI 3 6 OUTD US 240V poer one A MEMBER OF THE ABB GROUP Page 78 of 89 Part 7 Kol a a KI Lu 95 90 85 Efficiency 80 75 70 poer one 0 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL Appendix CEC Efficiency 96 0 40 50 60 70 of Rated Output Power Figure 7 6 Efficiency Curve PVI 3 6 OUTD US 277V CEC Efficiency 96 0 10 20 30 40 50 60 70 Of Rated Output Power Figure 7 7 Efficiency Curve
39. 7 3 INDEX OF FIGURES AND TABLES Table 1 1 Available version 10 Figure 1 1 Sample nameplate Tor PV 3 0 0UTD US iisiiees oin os qo Sau V nS eua ERE IR TRE S SIR PUES En Eva ERE eS kvA P SD aV qi S PRU ev Rau Tub Eege eg 10 Figure 1 2 Sample product Label 11 El UE S ge e m mom mmm 12 Figure 2 1 Minimum Clearances around the AURORA Inverter ccccccssssccceeccecceececseesceseuscecseuseesseeeeessaesesseaeeess 13 Figure 2 2 Side by side arrangement with minimum clearances around the AURORA Inverter 14 Figure 2 3 Staggered arrangement avoiding heat from other inverters sssssnesssssserssserersssreresssrrresserrressrreresseerens 14 Figure 2 4 Outdoor installation examples cccsssscccccssecccceesseccccseseceecsueeeccesaeeseceeseeeeecessueaeceesaeeseceesegueeeessugeeseeees 15 Figure 3 1 Bracket and Mounting Detalls sssesentysteia i te buE e Avatar tege e PEOR T E Une RE abu v Un ed ko deam n ette e Vut e divbs 16 Figure 3 2 Front Access Panel Location 18 Figure 3 3 DC switchbox with front switch external chassis view 19 Figure 3 4 DC switchbox with bottom switch external chassis view 19 Table 3 1 Switchbox External Parts Summary cccccccssssecccceeeeccecseeeececcsaeeeceeueaseeccessueaeeeessaaueecesseaueecessueaseeessuansses 19 Figure 3 5 Switch Box DC Electrical Schematics AFD available on A models only sse 20 Figure 3 6 Front switch
40. 7 of 89 The MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 4 Operations Guide NA 2 2 Cash Name Set desired currency using the keys in the usual manner The default currency is US Dollar Val KWh This indicates the cost of 1 kWh expressed in the currency set The default setting is Euro 0 50 Time Selecting this function allows adjustment of the system time and date settings Language Selecting this function allows setting of the language desired for system prompts Choices are Italian or English default Vstart Start up voltage can be set according to the available photovoltaic system Voltage range can be 120V to 350V Default setting for Aurora is 200V This parameter can be changed by means of the display keys Autotest This is the Aurora inverter s internal test for checking correct operation of the protection and the grid interface device as provided for by UL 1741 regulation Press ENTER to access the following information OV Max voltage UV Min voltage HREH OF test UF test UF Min Frequency DC injection OF Max Frequency DC injection Output current direct component This component shall not be gt 0 5 with respect to inverter maximum rated current or the unit will switch off The display has only two lines use the keys at the side of the display to scroll through items An arrow on left side of the display highlights the current selection When the chosen item is selected
41. 8 4 2 TL BCG 00681 Part 4 Operations Guide NA 2 2 Table 4 1 Voltage and Frequency Disconnect Parameters and associated TL Manager Symbols TL Factory Default Manager Setting Parameter Definition and Action Symbol Range 110 xVnom Indicates the value of the intermediate Over Voltage set point LIN Ur 120 xVnom Indicates the absolute maximum value of the Over Voltage set point LIN cM EN 88 xVnom Indicates the value of the intermediate Under Voltage set point LIN Nor TN EE 50 xVnom Indicates the absolute minimum value of the Under Voltage set point Fixed Set by control system to 50 of Vnom DO NOT CHANGE IS Indicates the value of the timed Over Frequency setpoint Fixed This parameter is not consistant with UL1741 IEEE1547 certifications and is not applicable to the TL string inverters DO NOT CHANGE DEFAULT SETTING 60 5Hz Indicates the value of absolute maximum Over Frequency setpoint Fixed ee IEEE1547 certified inverter this value is fixed at 60 5Hz DONOT Indicates the value of the adjustable Under Frequency setpoint For line frequency below this value a disconnect timer is set to count down the ride 59 3 Hz through time Timeout f If the timer reaches full count the inverter will be disconnected from the grid If the measured frequency rises above this value the disconnect timer is reset The default setting indicates the disconnect timer will initiate its count down at 59 3Hz Indicates the value of absolut
42. DITIONAL PROTECTIVE DEVICES AURORA UNO Inverter is equipped with additional protections to guarantee the safe operation under any circumstances Such protections include e Constant monitoring of grid voltage to ensure that voltage and frequency remain within the specified operational limits in accordance with UL 1741 standard e Automatic power limitation derating controlled by internal temperature monitoring to avoid overheating heat sink temperature 2158 F 7 2 5 6 Arc Fault Detector AFD This safety function allows the inverter to recognize electrical arcing on DC cables Once the arcing has been detected the inverter will fall into secure state The inverter will remain in this disconnected state even after turn it off and on again It s possible to unlatch the unit pressing ESC button on the display after a complete check of DC cables The AFD board performs a safety Self Test at each start up providing the result of the test on the inverter display 7 2 6 FCC REMARKS The equipment specified in this manual complies with Part 15 of the Code of Federal Regulationss Operation is subject to following two conditions e This equipment may not cause harmful interference e This equipment must accept any interference received including interference that may cause undesired operation power one A MEMBER OF THE ABB GROUP Page 88 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 7 Appendix NA 2 2
43. Energy Resources CSA CSA C22 2 No 107 1 01 General Use Power Supplies power on e Ad A MEMBER OF THE ABB GROUP Page 5 of 89 Technical Manual PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 1 Introduction and Safety NA 2 2 1 2 1 1 EQUIPMENT SArETY WARNINGS In addition to the safety and hazard symbols the following symbols are also used in this installation guide NEN System earth conductor main grounding protective earth PE Alternating Current AC Value Direct Current DC Value m gt Grounding earth The equipment has various labels Those with a yellow background refer to safety concerns Be sure to read all labels before beginning installation of the equipment If any questions arise as to the meaning or intent of these notices please contact Power One Technical Support at 1 877 261 1374 1 2 1 2 General Installation Warnings The AURORA UNO Transformerless Inverter is designed and tested according to international safety requirements however certain safety precautions must be observed when installing and operating this inverter Read and follow all instructions cautions and warnings in this installation manual If questions arise please contact Power One Technical Support at 1 877 261 1374 All operations regarding transport installation and start up including maintenance must be A carried out by qualified trained personnel and in compliance with all prevailing local codes and regulations 1 2
44. INDICATORS LCD DISPLAY Inverter 0 K Hon 81 Jan 12 66 poer one A d MEMBER OF THE ABB GROUP Page 43 of 89 The MANUAL PVI 3 0 3 6 3 8 4 2 TL Part 4 Operations Guide 4 3 1 STATISTICS MENU Press ENTER to select the STATISTICS menu and display the submenu An arrow on the left side of the display highlights the current selection Only two lines can be viewed on the display use the UP and DOWN control keys to scroll through all selections Press ENTER to open the submenu corresponding to the arrow Lifetime e Time Lifetime operation time e E tot Total energy produced e Val Economic gain e CO CO saving compared to fossil fuels Partial e Time Total operation time since the counter was last reset e E par Total energy produced since the counter was last reset e PPeak Maximum peak power measured since the partial counter was activated e Val Economic gain since the counter was last reset e CO CO saving compared to fossil fuels since counter was last reset To reset all counters in this submenu press the ENTER key for over three seconds warning sound is repeated 3 times to confirm reset Today e E tod Total energy produced during the day e Ppeak Peak power value achieved during the day e Val Economic gain during the day e CO CO saving for the day compared to fossil fuels Last 7 Days e E 7d Total energy output over the last 7 days e
45. LATION LOCATION 2 1 TRANSPORTATION AND HANDLING Transportation of the equipment especially by road must be carried out 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 2 1 1 LIFTING Power One packages and protects individual components using suitable means to make their transport and subsequent handling easier Due to the weight and complexity of this equipment Power One recommends the process of loading and unloading of this equipment be done by an experienced or specialized staff knowledgeable in material handling The inverter weight is about 48lbs 21kg and is susceptible to tipping It requires two or more persons to mount to bracket Use proper lifting techniques to avoid personal injury Where indicated or where there is a provision eyebolts or handles can be inserted and used as lifting points Do not lift several units or parts of the equipment at the same time unless otherwise indicated 2 1 2 INCOMING INSPECTION It is the customer s responsibility to examine the condition of the unit shipped Upon receipt of Power One s AURORA UNO Inverter please perform the following check e Inspect the shipping container for any external damage e Inventory the contents against the listing of Table 2 1 and verify receipt of all items Use care not
46. OS and NEG for each array Figure 3 11 Front switch Independent configuration Figure 3 12 Bottom switch Independent configuration The Aurora inverter can be configured with an independent MPPT maximum power point tracking for each DC input channel or with the two input DC channels connected in parallel operating with one MPPT 3 3 1 1 Independent or Parallel Configuration of Dual Inputs The AURORA Inverters have dual inputs with independent maximum power point tracking MPPT control When operated in the dual input independent mode the inverter can optimize two independent arrays Each of the inputs is dedicated to a separate array with independent maximum power point tracking MPPT control This means that the two arrays can be installed with different positions and orientation Each array is controlled by an independent MPPT control circuit The two trackers can also be configured in parallel to handle power and or current levels higher than those a single tracker can handle The S1 switch located on the inverter connection board Figure 3 9 is used to select the parallel or independent input mode Switch S1 is set to independent mode as default The following section details how to connect the inverter in parallel mode power one A d A MEMBER OF THE ABB GROUP Page 25 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 3 Mounting and Wiring NA 2 2 3 3 1 2 Independe
47. OT CONNECT 1 Required for RS485 communication 2 Required for Remote OFF control DO NOT CONNECT pin 4 when cabling units with AFD installed f i i ox REM RS485 Figure 3 19 Standard RS485 connection CAUTION HAZARDOUS VOLTAGE The WT WIND terminals are not isolated and can have hazardous voltages present These terminals must not be utilized for any purpose in a PV installation for use with wind models only power one A MEMBER OF THE ABB GROUP Page 30 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 3 Mounting and Wiring NA 2 2 Use a cable designed for use with RS 485 communications such as Belden 3106A which is a data cable wire with one twisted pair one ground conductor and a shield with drain wire equivalent The shield wiring must be continuous as it passes from one inverter to the next on a daisy chain but must not be tied to ground at these junctions Symbol aw Reference Figure 3 20 Data cable for use with RS 485 communications particularly so for large plants with multiple inverters For best results the shield must be tied to Continuity of the shield in the RS 485 cable is important for low noise on the line this is ground at only one point on the line typically at one end or the other The shield wiring must be continuous as it passes from one inverter to the next on a daisy chain but must not be tied to ground a
48. OUP Page 53 of 89 The MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 4 Operations Guide NA 2 2 STEP 2 After completing the initial setup navigate to Computer gt Local Disk C Program Files gt Texas Instruments Inc TUSB3410 Single Driver Installer DISK1 LS EE Lo Texas instruments Inc TUSBS410 Single Deiver Install These files will be in the DISK1 folder m mS mem m WENT Mganape Include m bbnr pe with n VT Favorites m BE Desktop 1 Wid di Doaniosds 1028 mat 3 Recent Places LI HSL man L emm 4 Libraries Ponds Documents 1 1035 m t a Music 1040 mat te Pictures Hi ena B videos L1 Li eng IM mag I Computer 2052 mat Click on the setup icon oral Disk C BSetapall to install the TUSB3410 VCP driver Ca Local Deak Dx Et setup am USBZOFD F setupss This setup will install the driver on the d Network gros computer TUSB3410 The InstallShield Wizard will install TUSB3410 on your computer To continue click Next Click Next and Finish to complete the TUSB3410 VCP driver installation power one A d A MEMBER OF THE ABB GROUP Page 54 of 89 The MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 4 Operations Guide NA 2 2 STEP 3 After completing the installation wizard plug the USB cable into the computer with the inverter powered ON and wait for it to recognize the USB port When install
49. OUTD US 3 0 kW PVI 3 0 OUTD S US PVI 3 0 OUTD S US A PVI 3 6 OUTD US 3 6 kW PVI 3 6 OUTD S US PVI 3 6 OUTD S US A PVI 3 8 OUTD US 3 8 kW PVI 3 8 OUTD S US PVI 3 8 OUTD S US A e Unit Weight S version 47 3 Ibs 21 3kg e Dimensions H x W x D S Version 33 8 x 12 8 x 8 7 859mm x 325mm x 222mm power on e Ad A MEMBER OF THE ABB GROUP Page 10 of 89 Technical Manual PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 1 Introduction and Safety NA 2 2 PVI 4 2 OUTD US 4 2 kW PVI 4 2 OUTD S US PVI 4 2 OUTD S US A For inverters of equal output power the differences between models are the presence of the wiring box and the addition Arc Fault Detection A description of the three models can be found in Table 1 1 Table 1 1 Available versions PVI 3 0 3 6 3 8 4 2 OUTD US No wiring box PVI 3 0 3 6 3 8 4 2 OUTD S US Wiring box with integrated DC Disconnect Switch Wiring box with integrated DC Disconnect Switch and PVI 3 0 3 6 3 8 4 2 OUTD S US A x Integrated PV AFCI Type 1 device for arc fault detection AFD Section 1 3 1 4 1 PRODUCT NAMEPLATE Power one oQP WD Assembled in USA Ed C US PHOTOVOLTAIC GRID TIED INVERTER UTILITY INTERACTIVE MODEL PVI 3 0 OUTD US The product nameplate is affixed to the inverter and provides the following information DC RATING Nominal Input Operating Voltage 360 V Max Input Voltage 600 V Range of Input Operating Voltage 90 580 V Range of In
50. Press UP to scroll numbers forwards from 1 to 31 e Toset the month o Press DOWN to scroll months from December to January o Press UP to scroll months from January to December If the dates entered are inconsistent the display alerts the user to the problem power on A d A MEMBER OF THE ABB GROUP Page 45 of 89 The MANUAL PVI 3 0 3 6 3 8 4 2 TL Part 4 Operations Guide 4 3 2 SETTINGS MENU BCG 00681 NA 2 2 Select SETTINGS from the Main Menu display The first screen requires a password to continue Password o The default password is 0000 Pressing ENTER four times load four zeroes on the display and opens the subment The password can also be changed using the keys on the display e Use ENTER to move from one digit location to the next from left to right e Use ESC to go back to the previous figure from right to left e Press DOWN to scroll numbers backwards from 9 to O e Press UP to scroll numbers forwards from O to 9 e Press ESC repeatedly to go back to the previous menus After entering the required password press ENTER to display the Settings submenus The display has only two visible text lines and the UP and DOWN control keys must be used to scroll through the menu items An arrow on the left side of the display highlights the current selection Move the arrow to the desired selection and press ENTER to access the associated submenu To return to the preceding menu press the ESC key
51. al Manual PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 1 Introduction and Safety NA 2 2 1 4 2 PRODUCT LABEL The product label shown below is affixed to the inverter and provides the following information Power One 1 Manufact d EE ER PVI 3 0 OUTD US 2 Model code nid Jr 3 Serial number P N 20962940508 EY 841452 WI 1312 Figure 1 2 Sample product label 00000000 01 4 Week Year of production The labels attached to the equipment must NOT be removed damaged stained etc They A are not to be hidden with external objects or parts such as rags boxes or other such equipment They should be cleaned periodically and always maintained in view 1 4 3 CONDITIONS OF WARRANTY Warranty conditions are described in a certificate supplied with the equipment The warranty is understood to be valid if the user observes what is described in this manual Any conditions deviating from those described must be explicitly agreed upon in writing After inspecting the TRIO Inverter fill out the warranty information and submit it to Power One Submitting this information will register the unit with the manufacturer and the owner will receive technical updates Warranty exclusions can be found on the Power One Renewable Energy website in the download section of the AURORA TRIO product page power one A MEMBER OF THE ABB GROUP Page 12 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 NA 2 2 PART 2 UNPACK AND SELECT INSTAL
52. anic isolation between inverter input array and output grid This circuitry provides galvanic isolation from the secondary AC side while maintaining very high performance in terms of energy yield and export An AURORA with two independent input DC DC converters each converter is typically dedicated to a separate array and has independent Maximum Power Point Tracking MPPT circuitry and control This means that the two arrays can be installed with different positions facing different directions and with different string lengths each array is controlled by an MPPT control circuit The Aurora s high efficiency and extra large heat dissipation system enables operation at maximum power over a broad range of ambient temperatures Two independent Digital Signal Processors DSP and one central microprocessor control the inverter and therefore two independent computers control the grid connection in full compliance with safety standards and regulations The AURORA Inverter operating system program communicates with all of the sub systems within the inverter performing necessary data processing calculations to guarantee optimal performance levels of the system and high power harvesting in all installation and load conditions while maintaining full compliance with prevailing safety directives laws and regulations 7 2 5 PROTECTIVE DEVICES WITHIN THE AURORA UNO INVERTER 7 2 5 1 Inverter Output the Grid Connection The inverter converts ene
53. ax multiples and Enable or Disable MPPT scan as necessary Scan Interval This function is used to set time interval for system max multiple scan The default setting is 15 minutes Set Vgrid CC 208VSingle Ph Vnom 208V 277V Single Ph To choose a grid connection different from the 240V Split phase default Vnom 277V setting use the UP or DOWN key to move to the arrow to the desired uide selection and press ENTER A second display screen will open press the ENTER to confirm or ESC to go back Vgrid 208V Confirm 4 3 3 INFO MENU Selecting the information menu displays the following AURORA Inverter data e Part No part number e Serial No Wk Yr serial number week year e Fw rel firmware revision level power on A d A MEMBER OF THE ABB GROUP Page 51 of 89 The MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 4 Operations Guide NA 2 2 4 4 USING THE AURORA MANAGER TL SOFTWARE This Aurora Manager Software is included on the CD shipped with each inverter and is typically loaded on a laptop PC for portability to the installation site If this software is not included in the CD please call Power One Technical Support 1 877 261 1374 The installation of this software is optional as most of this functionality can be done through the inverter display If it is desired to view the basic monitoring and setting options from a computer screen follow the installation instructions e Remove the di
54. e Idcmax for both 20 32 32 32 MPPT in Parallel A Maximum Usable Current per Channel 10 16 16 16 A Max Short Circuit Current Limit per 12 5 20 0 20 0 20 0 Channel A of Wire Landing Joa 2 pair Dam Po Terminals Per Channel pas SST pas SIS Array Vering Terminal block Pressure Clamp AWG10 AWG4 Termination Split Split Split Split Grid Connection Type 1 2W 3W 1 2W 10 2W 3W 10 2W 10 2W 3W 10 2W 10 2W 3W 1 2W AdjustableVoltage 183 211 244 183 211 244 183 211 244 183 211 244 Range Vmin Vmax 228 264 304 228 264 304 228 264 304 228 264 304 Adjustable Grid Freq 57 60 5 67 605 57 60 5 57 60 5 Range Hz Total Harmonic Distortion Rated 2 2 2 2 Power Grid Wiring Terminal block Pressure Terminal block Pressure Terminal block Pressure Terminal block Pressure Termination Type Clamp AWG10 AWG4 Clamp AWG10 AWG4 Clamp AWG10 AWG4 Clamp AWG10 AWG4 Protection Devices Reverse Polarit i y Yes Yes Yes Yes Protection power one MS MEMBER OF THE ABB GROUP Page 74 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 7 Appendix NA 2 2 EE Varistor 2 for each channel Protection Type PV Array Ground Fault Detection Pre start up Riso and dynamic GFDI Requires Floating Arrays Anti sanang Meets UL 1741 IEEE1547 requirements Protection EES 20 20 15 25 20 20 20 20 20 25 25 25 Rating Arms Over Voltage V 2 Li L L4 Protection Type a
55. e checked by a technician installer to red LED on the front of the inverter The identify and eliminate the problem inverter may even also generate the E018 f the measured value is greater than 1 mega ohm and the alarm message for AC leakage currents error warning continues to be present contact Power The alarm is generated when during normal operation of the inverter a ground leakage current is detected in the DC section of the system The alarm is associated with the capacitive nature of One Service the photovoltaic generator compared to ground A d A MEMBER OF THE ABB GROUP Page 64 of 89 Part 5 Display Message E019 Self Test Error 3 Leakage current sensor self test fail E020 Self Test Error 1 Booster relay self test fail E021 Self Test Error 2 Inverter relay self test fail E022 Self Test Error 4 Relay self test timeout E023 DC inj error Dc Injection out of range E024 Internal error poer one The MANUAL PVI 3 0 3 6 3 8 4 2 TL Troubleshooting Causes Before connecting to the grid the inverter carries out an autotest that tests 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 t
56. e grid e Total energy e Voltage of photovoltaic array 1 e Partial energy e Current of photovoltaic array 1 e Mean grid voltage e Voltage of photovoltaic array 2 e Insulation resistance e Current of photovoltaic array 2 e Leakage current to ground e Serial Number Code e Date time e Week of production 4 1 2 2 Data Logged Internally Power One s AURORA Vision stores the following data internally e Total and partial counter of grid connection time e Total and partial counter of energy transferred to the grid e Daily Energy Production 365 values e Energy transferred to the grid every 10 seconds for the last 8 640 periods of 10 seconds which on average cover more than 2 days of logged data e Last 100 fault conditions with error code and time stamp e Last 100 changes to grid connection parameters with parameter code and new value The first two types of data Total and partial counters are displayed on the LCD and through the RS 485 interface while all other data logged internally can be displayed only through the RS 485 interface power on A d A MEMBER OF THE ABB GROUP Page 35 of 89 The MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 4 Operations Guide NA 2 2 4 1 3 DISPLAY AND KEYPAD AURORA Inverters are equipped with an LCD four buttons for menu navigation and three LEDs indicating the device status e POWER LED green indicates the AURORA Inverter is operating normally This light flashes upon start up durin
57. e inverter right wall to access the USB input Monitoring System Options Simple Monitor A e Aurora RS485 USB Line Converter D wm inpuls e User Supplied PC 9 Fg neu cn eit e Use Aurora Communicator Software PS Web Based Data Logger n gg Ze i CS Fe RS485 Aurora Easy Control e Use Aurora Universal Data Logger WW Ee e urora Easy Co Ethernet e Optional I O Meters Irradiance Sensors etc can be connected e Ethernet LAN to Internet and connection to Aurora Web Portal service End User s computer Figure 4 1 Data Transmission Options power on A d A MEMBER OF THE ABB GROUP Page 34 of 89 The MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 4 Operations Guide NA 2 2 4 1 2 DATA TYPES AVAILABLE AURORA Inverter provides two types of data that can be collected using the display and or the appropriate interface software 4 1 2 1 Real Time Operational Data Real time operational data can be transmitted on demand through the communication lines and are not stored inside the inverter The free AURORA Communicator software included on the installation CD may be used to transmit data to a PC Please check the Power One website at www power one com for the latest updated version The following data is available via the RS 485 link e Grid voltage e Firmware revision code e Grid current e Daily energy e Grid frequency e Leakage current of the system e Power transferred to th
58. e minimum allowable Under Frequency setpoint 57 Hz For a UL1741 IEEE1547 certified inverter the default value is 59 3Hz Fixed This parameter will cause the nyerte to ai ronner from the grid within 160ms if the line frequency falls below below its set point value DO NOT CHANGE DEFAULT SETTING Indicates the initial value of the countdown timer associated with Over Frequency 57Hz 59 3Hz Timeout 160ms setpoint f gt Fixed This parameter is not consistant with UL1741 IEEE1547 certifications and is not applicable to the TL string inverters DO NOT CHANGE DEFAULT SETTING Indicates the initial value of the count down timer associated with Under Frequency set point f 300000ms The value of the timer begins to decrease when line frequency falls below setpoint 160ms 300000ms Timeout f lt and resets when the line frequency rises above the value of set point f The inverter will operate for up to 300000ms 5min for an under frequency below the f set point as long as the frequency does not fall below the f setpoint Note that only two highlighted parameters above need to be adjusted to obtain settings for all known adjustable Under Frequency applications power one e A A MEMBER OF THE ABB GROUP Page 59 of 89 The MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 4 Operations Guide NA 2 2 4 5 1 FACTORY DEFAULT SETTINGS PER UL1741 IEEE1547 FIXED PARAMETER MODEL File Configuration Inverter
59. eat sink and some areas of the chassis may be extremely hot to the touch Prior to touching any part of the inverter use care to ensure surfaces and equipment are at touch safe temperatures and voltages before proceeding Anytime the inverter has been disconnected from the AC utility grid use extreme caution as some components can retain charge sufficient to create a shock hazard and may need time to dissipate the charge To minimize occurrence of such conditions comply with all corresponding safety symbols and markings present on the unit and in this manual 1 2 2 3 Location of Safety Notices Note the location of safety notices on the AURORA UNO Inverter for notification and protection They are located on both side panels of this unit Labels must not be hidden with external objects or parts such as rags boxes or other such equipment They should be cleaned periodically and always maintained in view power one Ad A MEMBER OF THE ABB GROUP Page 8 of 89 Technical Manual PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 1 Introduction and Safety NA 2 2 1 2 2 4 Clothing and Protective Devices Appropriate Personal Protective Equipment PPE must be worn at all times when servicing this equipment under any conditions which may subject personnel to hazardous voltages or temperatures that are not touch safe All operations on the equipment should be performed with properly electrically insulated instruments 1 2 3 APPROPRIATE USAGE
60. eccsenseccaaececseeecesaueeeseueeceseuecesseuecessueeeeseeeessuueeessaesessaaeeess 29 Figure 3 20 Data cable for use with RS 485 communications nennen nennen nnns nnne nna 30 Figure 3 21 Terminauorn SWITCH EC 32 Figure 3 22 Daisy Chain Communication Wiring ccccseecccsseecccseccccsecccceueceseeeseeeseusecsseuecessuseeeseueceseueeeessesessaeeees 32 Figure A 1 Data Transmission Optons seesseesssseeeeee eene nenne nnne nennen nnns nsa tesis e sa esa tes esa esa stes sess sanns 33 Figure 2 ED INGO and ON E 35 Figure 4 1 Settings SUNNE essei doe i bordo proi Medea peg boves ti terrae GNAGE estere 41 Figure 4 2 Satistics Die a EU E 42 Figure 4 3 Information SEN EE 42 Figure 4 3 Alarm and Remote Contacts Terminal Block 49 Ligure FC yy ei Panel ni eui eta oma NEU ode Sateen PvE ve aie ICI scare NEU are nanan Geena dur esas areata 56 Figure 4 5 Select Mode Panel eese eese nnne n rosse a stessa estes sea estes ses estes ses estes ees esee sues 56 Figure 4 6 Grid Parameters Panel 57 Table 4 1 Voltage and Frequency Disconnect Parameters and associated TL Manager Symbols 58 Figure 4 7 Fixed Parameter Model 59 TESE SiC EM C le 61 Table 6 1 Recommended Periodic Maintenance cccsseccccsssccceescccesecccsneccssuesecseuecesseuscesauecesssaecessaueeessueeeesaneeess 71 Figure 6 1 Internal battery replacement ssesisisssrsssirsssesissuresksrrssirossurresarssrninssasunse tissa o
61. ecked externally If the problem persists after switching the inverter off and then on again contact 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 voltage 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 contact 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 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 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 Power One Service A d A MEMBER OF THE ABB GROUP Page 63 of 89 Part 5 Display Message E012 DcDc Fail Booster module error revealed by Inverter E013 Wrong Mode Wrong Input Mode parallel instead of independent E014 Over Temp Over temperature E015 Bulk Cap Fail E016 In
62. ed successfully a pop up USB Serial Port COM3 will display on the bottom right D Device driver software installed successfully corner of the computer desktop H ae ae a Power OFF the inverter i e wm uv W New Open Favorites Add Extract Encrypt View Name lype Modified Size Ra Pack Path Copy the umpf3410 i51 li umpf3410i51 151 File 11 29 2006 4 4 16 384 52 7 944 WB setup exe Install App 10 21 2010 10 1172 S 112 file from the open zip file on the computer Selected 0 files 0 bytes Total 2 files 11 513KB Navigate to Computer gt Local Disk C gt Windows gt System32 gt Drivers and paste the file umpf3410 i51 from the zip file into this Drivers folder Power the inverter back ON Launch either Aurora Installer or Aurora Communicator CVI or Aurora Manager software installed previously on the computer and go to Configuration gt Communication BaudRate 19200 Se tup ctrl S AT Advanced Settings From the Configuration window use the drop down arrow to select the port the USB is connected to and click OK The Aurora Inverter is now ready to communicate via the USB connection poe or A d MEMBER OF THE ABB GROUP Page 55 of 89 The MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 4 Operations Guide NA 2 2 4 5 ADJUSTMENTS OF DISCONNECTION PARAMETERS Changes to these parameters must be made to meet the requirements of the local utility Entry of
63. el File Configuration Inverters Help On the Configuration panel shown below select the appropriate COM port assigned to the RS 485 adapter If this value is unknown follow the procedure described in the Power One USB RS485 RS 232 user manual The other parameters should be left to the default values power on A d A MEMBER OF THE ABB GROUP Page 56 of 89 The MANUAL PVI 3 0 3 6 3 8 4 2 TL Part 4 Operations Guide Configuration Serial Port COM Port used to communicate with the inverters Serial Configuration Set as described in the USB RS485 RS232 user manual Serial Port CO MII Baud Rate 19700 Baud Rate Speed of the communication line leave the default value 19200 bit s mns S Stop Bits Stop bit of RS 485 communication Parity Leave the default value One 1 Parity Parity bit for error recovery W DT Enable Leave the default value None la ATS Enable DTR RTS Enable flag to enable DTR or RTS synchronization Cancel Leave the flags unchecked disabled Figure 4 4 Configuration Panel STEP 2 Scan the Inverter Bus to acquire the inverters The Select Mode panel allows the communication bus to scan the inverters It is possible to choose between Single Inverter or All Inverters Select Mode Single Inverter insert the inverter address and then press Start All Inverter by pressing Scan the software will Single Inverter search for all the inverters up to the maximum address config
64. enerally in the US the National Electric Code NEC is used but some areas use variations to this code In Canada the national code is the Electrical Safety Code ESC however there are also local variations to this code e g in Ontario the Ontario Electrical Safety Code OESC is the regulating document The sizing and specification of a PV array requires trained individuals Decisions on how to structure a photovoltaic array depend on a number of factors and considerations such as the type of panels the available space the future location of the system long term energy production targets etc Power One offers a configuration program AURORA Stringtool that can aid the designer in setting correct dimensioning of a photovoltaic array to match characteristics of AURORA Inverters is available on the Power One website http stringtool power one com To avoid equipment damage the string voltage must not exceed 600 Vdc for any reason The effect of the negative thermal coefficient on the PV module s open circuit voltage causes Over Current OC Voltage to occur in conditions of minimum ambient temperature It is the A responsibility of the installer to check the PV generator s configuration before connecting any PV array The maximum allowable input short circuit current limit of the photovoltaic string for each MPPT input channel is 20Adc for the 3 6kW 4 2kW inverter and it is 12 5Adc for the 3 0kW inverter The default value of
65. ers by more than 1 with external operations If the alarm is persistently minute from the internal time of the repeated contact Power One Service microprocessors and indicates clock circuit malfunctioning 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 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 Fuse s on the fuse boards is are damaged 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 Power One Service Overvoltage surge arresters situated on the DC side are damaged 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 Power One Service Overvoltage surge arresters situated on the AC side are damaged
66. ested Also please note that other commercial devices could require external termination impedance which is not necessary for Aurora brand RS 485 converters A MEMBER OF THE ABB GROUP power on z Page 33 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 NA 2 2 PART4 OPERATIONS GUIDE 4 1 MONITORING AND DATA TRANSMISSION In order to prevent damage to the equipment and injury to the operator IT is essential to have a thorough knowledge of the user interface operations A Power One cannot be held responsible for damage to the equipment or the operator if caused by incompetence insufficient qualifications or lack of training 4 1 1 USER INTERFACE The AURORA Inverter provides operational data to the user through the following instruments e LED Indicator lights e Liquid Crystal Display LCD e Digital data transmission via a dedicated RS 485 serial port using AURORA Inverter Protocol and a PC or a data logger equipped with an RS 485 port to collect data If an RS 485 line is used it may be convenient to use the AURORA USB RS 485 232 serial interface converter model number PVI USB RS485 232 The optional AURORA PVI UNIVERSAL data logger is also available which allows a web based monitoring platform e Data transmission via USB cable This type of connection is typically used when monitoring a single inverter and for maintenance purposes To connect the USB cable remove the waterproof plug at the bottom end of th
67. from Mode 1 to 9 CC Intensity 2 Contrast Select this menu choice and enter to adjust display ET 1 lighting contrast EE Buzzer Available display light tones go from O to 9 Press UP and DOWN keys to scroll the numbers and then press ENTER to confirm the selection 3 Buzzer Select this menu choice and enter to set key tone TEF 1 setting choices are PL e ON The key tone is ON CA Buzzer e OFF The key tone is OFF Service This is a controlled access area of the operating system used by the factory to set certain control functions Access is via an Advanced Password which is a dedicated security code based on the unit serial number and is controlled by Power One Installers may need to access this menu for certain adjustments during the installation process Power One will provide Advanced Password access to authorized installers to allow specific actions upon completion of required documentation New Password Selecting this function allows changing the default password 0000 to a personal code To set a personal code use the display keys as follows e Use ENTER to move from one digit to the next from left to right e Use ESC to go back to the previous digit from right to left e Press ESC repeatedly to go back to the previous menus e Press DOWN to scroll numbers backwards from 9 to 0 e Press UP to scroll numbers forwards from 0 to 9 power on A d A MEMBER OF THE ABB GROUP Page 4
68. g the grid check routine If a correct grid voltage is detected and sunlight is strong enough to start up the unit the LED stays on steady If not the LED keeps flashing until sunlight becomes strong enough to start up the inverter In this condition the display will read Waiting Sun e ALARM LED yellow indicates a fault condition has been detected A description will appear in the two line display e GFI LED red indicates the inverter has detected a ground fault in the DC side of the PV system When this kind of fault is detected the AURORA Inverter disconnects from the grid and the corresponding fault indication appears in the two line LCD display The AURORA Inverter remains in this condition until the operator presses the ESC key to re start the grid connection sequence If pressing the ESC key doesn t clear the ground fault check the ground fault fuse located in the switchbox If the AURORA Inverter does not reconnect to the grid contact Power One Technical Service TWO LINE PROGRAMMING LCD DISPLAY CONTROLS LED INDICATORS Inverter 0 Hon Bl Jan 1 ERTEN Figure 4 2 LED Indicators and Controls A two line LCD located in the center of the front panel provides Inverter operating status and statistics Service messages for the operator and Alarm and fault indicators During operation the display cycles through available data points updating every five seconds Screens may be scrolled manually by p
69. he 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 to dispose of the products it consists of follow the regulations in force in the country of destination and 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 6 1 Component Disposal COMPONENT MATERIAL OF CONSTRUCTION Frame brackets supports Arc welded steel FE37 Casing or covers ABS Plastic Paint RAL Gaskets and seals Rubber Teflon Viton Electrical cables Copper Rubber Cable trays Polyethylene Nylon Backup battery Nickel Lead Lithium power on z A MEMBER OF THE ABB GROUP Page 73 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 NA 2 2 PART7 APPENDIX 7 1 TECHNICAL DATA Table 7 1 Data Sheet Nominal Output 3000 3600 3300 3800 4200 Power W SECHER 3000 3300 3300 3600 4000 4000 3300 3800 4200 3000 4600 4600 Power W Input Side DC Ss of Independent Max Usable Power for Each Channel W 2000 3000 3000 3000 Absolute Max Voltage Vmax Up Vol a EE 200 adj 120 350 200 adj 120 350 200 adj 120 350 200 adj 120 350 Full Power MPPT 220 200 200 220 200 200 200 200 Operating MPPT 0 7xVstart 580 gt 90V Voltage Rang
70. iles to the computer C Program Files Texas Instruments Inc e The second step installs the actual TUSB3410 driver to the particular Operating System XP 32 bit XP 64 bit Vista 32bit Vista 64bit Win7 32bit Win7 64bit e The final step connects the inverter to a pc or laptop for communication STEP 1 File Actions Help oS CN amp sp New Open Favorites Add Extract Encrypt View After downloading the zip file unzip Sexual Modified Sizes I EE NF the USB Driver Files and click on 11 29 2006 44 16 384 52 7 944 setup exe 8i setup exe Install App 10 21 2010 10 11 77 5 112 Click on OK This setup will extract all the necessary files to a computer at C Program Files Texas Instruments Inc Choose Accept from the license agreement screen Click Next to begin installation Continue the TUSB3410 Single Driver Wrapper installation by clicking on Next Install and Finish to complete power one m TT Selected 0 files 0 bytes Total 2 files 11 513KB Install WinZip will extract all files to a temporary folder and run the setup exe program V Minimize during install H TUSB3410 Single Drive Destination Folder Click Next to install to this folder or click Change to install to a different folder C Install TUSB3410 Single Driver Wrapper to C Program Files Texas Instruments Inc TUSB3410 Single Driver Installer InstallShield A d MEMBER OF THE ABB GR
71. improper values could cause the inverter to shut down If it is necessary to adjust the frequency and disconnect times to meet local utility requirements modifications are made using the Aurora Manager TL software Instructions to download and install the software on a PC can be found on the CD included with this inverter if an internet connection is available check the product page at www power one com renewable energy and download the most recent version Prior to connecting to the grid with the inverter s DC disconnect switch set to ON a computer with software installed should be connected to the inverter via an RS485 USB adaptor not included The USB driver files and instructions for installation can be found on the CD or Power One website PC inverter connection cable requires is standard USB 2 0 cable terminals type A and B The computer loaded with the software must be interfaced to the inverter RS 485 port utilizing an adapter such as the Aurora PVI USB RS485_232 adaptor This device has a port for the RS 485 and a standard USB port for connection to the computer See section above for connection via USB Once the software is loaded and the computer is interfaced to the inverter double click the desktop icon loaded with software to open the program and TB follow the steps below to make the field adjustments STEP 1 Configure the Communication Select the Configuration menu on the Command Bar to open the configuration pan
72. in a series according to the daisy chain method On the last inverter in a daisy chain or on a single inverter activate the termination resistance of the communication line by moving switch S2 down into the ON position All other inverters in the daisy chain will have the switch S2 up in the OFF position Figure 3 22 power one A d A MEMBER OF THE ABB GROUP Page 32 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 3 Mounting and Wiring NA 2 2 NOTE e The ON position means the RS485 port is inactive e The OFF position means the RS485 port is active Figure 3 21 Termination Switch S2 lt f ee lt E l HQ ES fl mE FOR Datalogger Figure 3 22 Daisy Chain Communication Wiring 3 3 4 2 Addressing Each Inverter When multiple inverters are connected in a daisy chain it is necessary to assign a different RS 485 address to each unit This enables the bus addresses for the inverter connected to the RS 485 communication bus to be set to an appropriate value Address values are assigned manually using any value in the range 2 to 64 See Part 4 section 4 2 5 2 for further details on using the LCD to apply these settings Other third party RS 485 converters available on the market can also be used but Power One does not assure correct connection operation since these devices have never been specifically t
73. 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 Power 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 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 Power One Service A d A MEMBER OF THE ABB GROUP Page 66 of 89 Part 5 Display Message E031 Error Read V Wrong V Measure E032 Error Read I Wrong Measure E033 UTH Under Temperature E034 Interlock fail IGBT not ready E035 Remote Off not shown on the display waiting state for the signal that will Waiting remote ON E036 Vout Avg error Average Vout out of range E037 Riso Low Low insulation resistance amorphous mode only Mid Bulk OV poer one The MANUAL PVI 3 0 3 6 3 8 4 2 TL Troubleshooting BCG 00681 NA 2 2 Solution Causes Measurement of the internal voltage at This is an error inside the inverter that cannot be checked the ends of the output relay out of range externally If the problem appears repeatedly contact There is too great a difference in voltage
74. lan POWEr 0ne A MEMBER OF THE ABB GROUP AURORA UNO Photovoltaic Inverters PVI 3 0 3 6 3 8 4 2 TL LI Technical Manual Copyright 2013 Power One Inc All rights reserved No part of this document may be reproduced in any form without the prior written permission of Power One Power One makes no representations or warranties express or implied with respect to the contents of this document Power One reserves the right to make changes to this document without notice and shall not be responsible for any damages caused by reliance on the content presented All trademarks logos trade names service marks and copyrighted materials used in this document are the property of their respective owners The Power One name and logo are registered trademarks of Power One Inc in the U S A and other countries Power One e 3201 E Harbour Drive e Phoenix AZ 85034 e USA Page 2 of 89 Technical Manual PVI 3 0 3 6 3 8 4 2 TL BCG 00681 NA 2 2 Contents PART1 INTRODUCTION amp SAFET Y Vase se 3 1 1 INTRODUCTION oa 3 1 2 By A f A P 4 1 3 PRG TOAD OE GOIN ME 9 1 4 AVAILABLE NNN 9 PART2 UNPACK AND SELECT INSTALLATION LOCATION rrr 12 2 1 rs 12 2 2 SELECT INSTALLATION EOIN 13 PARTS MOUNTING amp WIRING disescsecscccsticecssecesssccetdsessicee eege EE EE 16 3 1 WAGE MOUNTING comina NE 16 9 2 WIRING DETAIL c
75. 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 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 Power One Service 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 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 resistor connected between ground and lf the measured value is less than 1 mega ohm the pole of the photovoltaic generator photovoltaic generator must be checked by a technician exceeds 30V for more than 30 minutes or installer to identify and eliminate the problem 120V for more than one second If the measured value is greater than 1 mega ohm and the error warning continues to be present contact Power
76. mum voltage of the operating threshold The alarm is triggered before interval the alarm is real Check the configuration of the reaching the absolute threshold beyond PV generator Input Overvoltage which the inverter will be damaged If itis lower than the maximum voltage of the operating When the inverter input voltage exceeds interval the alarm is caused by an internal the Over Voltage threshold the inverter malfunctioning contact Power One Service will not start because of the generation of the alarm poer one NA MEMBER OF THE ABB GROUP Page 62 of 89 Part 5 Display Message E003 No Parameters Internal Parameters Error E004 Bulk OV Bulk Overvoltage E005 Comm Error Internal Communication Error E006 Output OC Output Overcurrent E007 IGBT Sat IGBT Saturation E009 Internal error E010 Bulk Low Low Bulk Voltage E011 Ramp Fail Bulk ramp timeout poer one The MANUAL PVI 3 0 3 6 3 8 4 2 TL Troubleshooting Causes 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 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 a
77. n Power One s AURORA UNO Inverter can be found at www power one com power on e Ad A MEMBER OF THE ABB GROUP Page 4 of 89 Technical Manual PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 1 Introduction and Safety NA 2 2 1 2 SAFETY IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS KEEP IN A SAFE PLACE 1 2 1 WARNINGS IN THIS DOCUMENT This is a list of special safety symbols used in this manual that highlight potential safety risks and or useful information These symbols are as follows DANGER Indicates a hazardous situation that can result in deadly electric shock hazards other serious physical injury and or fire hazards CAUTION Indicates directions which must be fully understood and followed in entirety in order to avoid potential safety hazards including equipment damage or personal injury The reader should stop use caution and fully understand the operations explained before proceeding WARNING DANGEROUS VOLTAGE The product works with high voltages All work on the AURORA Inverter must follow the described documentation and must comply with all prevailing codes and regulations associated with high voltages During inverter operation parts will be energized at voltage levels WARNING HOT TEMPERATURE Some surfaces may become hot Do not touch the product while it is in operation UL 1741 Standard for Safety for Inverters Converters Controllers and Interconnection System Equipment for use with Distributed
78. ndoors 1 2 3 3 Improper or Prohibited Use The following actions are dangerous and strictly forbidden under the terms of the warranty e Installing the equipment in environments with flammable conditions e Using the equipment with safety devices not working or disabled e Using the equipment or parts of the equipment by connecting it to other machines or equipment unless otherwise expressed e Modifying areas that are operator restricted and or altering parts of the equipment in order to vary the performance or change its protection AN Le A d A MEMBER OF THE ABB GROUP Page 9 of 89 Technical Manual PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 1 Introduction and Safety NA 2 2 e Cleaning with corrosive products that may corrode parts of the equipment or with products that might generate electrostatic charges e Using or installing the equipment or parts of it without having read and correctly interpreted the contents of this manual e Blocking airflow to the cooling fins e g warming or drying rags on the unit or accessory parts is dangerous and could compromise the inverter operation due to overheating 1 3 ARCFAULT DETECTION AFD The 2011 National Electric Code NEC and 2013 Canadian Electric Code CEC includes a new condition that requires a photovoltaic system with a DC voltage greater than 80V and which is on a building or whose DC conductors enter a building must be equipped with a Listed device which can detect a DC a
79. nistor ea Efficiency BEES Operating Performance MP Mine 0 6 0 6 0 6 0 6 Consumption Wou Wow communication S if S User Interface 16 characters x 2 lines LCD display Remote Monitor AURORA UNIVERSAL d 1xRS485 incl URORA U SAL opt Wired Local Monitor PVI USB RS4 232 PVI DESKTOP 1xRS485 incl USB RS485 232 opt SKTOP opt Wireless Local EE de PVI DESKTOP opt with PVI RADIOMODULE opt Monitoring 13 to 140 25 to 60 with derating above 122 50 Environmental Ambient Air Operating Temp Range F C Ambient Air Storage Temp Range F C Relative Humidity RH 40 to 176 40 to 80 0 100 condensing Acoustic Noise Emission Level db A 50 91m Max Operating ft 2 Altitude w o Derating GEN Isolation Level Transformerless Floating Array Safety and EMC UL 1741 CSA C22 2 N 107 1 01 Standard Safety Approval CSA ys Available Models standard Without DE PVI 3 0 OUTD US PVI 3 6 OUTD US PVI 3 8 OUTD US PVI 4 2 OUTD US Switch and Wiring Box Standard With DC Switch and Wiring PVI 3 0 OUTD S US PVI 3 6 OUTD S US PVI 3 8 OUTD S US PVI 4 2 OUTD S US Box With DC Switch Wiring Box and Arc PVI 3 0 OUTD S US A PVI 3 6 OUTD S US A PVI 3 8 OUTD S US A PVI 4 2 OUTD S US A Fault Detection AFD All data is subject to change without notice Capability enabled at nominal AC voltage and with sufficient DC power available When equipped wi
80. nnection for this inverter is shown in Figure 3 10 e Relevant wiring connections are shown above in section 3 2 2 e Refer to Figure 3 3 and Figure 3 4 to locate the designated entry locations for the conduits from the DC array and to the AC grid Make sure the appropriate knockouts are used in order to maintain required spacing between wiring groups EXT DC SWITCH EXT AC Optional SWITCH STRING 1A ARRAY 1 d STRING 1B e STRING2A lt ARRAY 2 STRING 2B lt Same as internal switch Figure 3 10 Electrical connection diagram WARNING Verify that the DC voltage in the Switchbox has the correct polarity and is within the operational range The array equipment grounding shall be installed per the requirements of the National Electric Code and it is responsibility of the installer poke Uu A d A MEMBER OF THE ABB GROUP Page 24 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 3 Mounting and Wiring NA 2 2 3 3 1 DC ARRAY CONNECTIONS wiring either open circuit all PV circuits prior to entry to the inverter and or cover all panels with dark or opaque material in order to eliminate hazardous voltage at the terminals of the array wiring To eliminate the potential for shock hazard during the connection procedure for the PV array Connect array to String 1 and String 2 input positions shown below running separate wires for P
81. nt Connection default The default position of the S1 switch is set in the IND mode DOWN position In this mode up to four strings can be connected two per input without need of external combiner fusing Figure 3 13 S1 Switch in IND position independent mode 3 3 1 3 Parallel Connection It is necessary to parallel the two inputs when e thecurrent from the photovoltaic array exceeds 20Adc for the 3 6kW 4 2kW inverter or 12 5Adc for the 3 0kW inverter e orthe array power exceeds the limit for the single channel see Appendix Table 7 1 Technical Data To operate the inverter in the single MPPT mode place S1 switch UP in the PAR position Note that only two strings can be directly connected to the inverter in this mode If more than two strings are required all strings must be combined in an external fused combiner box or the IND mode must be used Figure 3 14 S1 Switch in PAR position parallel mode power one A MEMBER OF THE ABB GROUP Page 26 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 3 Mounting and Wiring NA 2 2 Front switch wiring box parallel configuration S versions onl Parallel the two MPPT inputs of terminal IN1 and IN2 and IN1 and IN2 as shown in Figure 3 15 using the two 10 AWG jumper wires provided 1 black and 1 red cable to connect the input Figure 3 15 Front switch jumpers parallel MPPT input configuration S ver
82. o the utility or credited against future consumption producing energy savings 7 2 1 ELEMENTS OF A PHOTOVOLTAIC SYSTEM STRINGS AND ARRAYS In order to significantly reduce installation costs of the photovoltaic system especially related to the wiring problem on the inverter DC side and the subsequent distribution on the AC side the STRING technology was developed The terminology is as follows 1 A photovoltaic panel is composed of a great number of photovoltaic cells fixed onto a single supporting base A STRING consists of a certain number of panels connected in series An ARRAY is one or more strings connected in parallel Large photovoltaic systems can be composed of several arrays connected to one or more AURORA Inverters By maximizing the number of panels in each string the cost and complexity of the connection systems of the plant can be reduced 7 2 2 INVERTER INPUT THE PHOTOVOLTAIC ARRAY The input of a photovoltaic PV inverter is intended to be connected to a PV array The input circuitry includes Maximum Power Point Tracking MPPT circuitry which maximizes the output of the PV array under all allowable environmental conditions All AURORA UNO models are provisioned with two independent inputs each equipped with its own MPPT circuit that enables the AURORA UNO Inverter to be connected to two independent arrays that are maximized for output power individually See Block Diagram in Figure 7 13 below power one
83. o 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 may 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 Error inside the inverter BCG 00681 NA 2 2 Solution 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 Power One
84. oller Set as follows ENABLE Activates the ON OFF function requiring an external contact closure Remote ON OFF to activate the inverter Enable DISABLE Disables the ON OFF function so that inverter operation will operate Remote ON OFF normally depending only on grid access and external solar radiation default Disable Hardware access to the ON OFF function is via terminals R and R shown in Figure 4 3 When the function is active e Turn OFF the inverter terminals by shorting terminals R and HR e Turn ON the inverter by removing the short between terminals R and R With the function enabled the ON OFF input status is indicated on the inverter display Remote OFF When set to OFF the display will cycle through the two screens Waiting Rem ON to restart rege A d MEMBER OF THE ABB GROUP Page 50 of 89 The MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 4 Operations Guide NA 2 2 UV Protection Time PROT TIME Selecting this function allows setting of the inverter connection time after the input voltage drops below the under voltage limit set at 90V For example If UV Prot time is set at 60 seconds and Vin voltage drops below 90V the inverter stays connected to the grid at O power for up to 60 seconds afterwards The default value is 60 seconds but can be set over the range of 1 sec to 3 600 sec MPPT Scan EN DIS This function is used to automatically detect input power m
85. on A d A MEMBER OF THE ABB GROUP Page 40 of 89 The MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 4 Operations Guide NA 2 2 If the inverter configuration is set for single input Parallel mode this screen appears instead of the screen described in 11 12 Riso Measured insulation resistance Unlike the parameters discussed above this is not an instant value but a one of a kind measurement taken upon inverter start up Riso 0 0 Mohm Ileak 73 mA lleak Value of the leakage current passing through the grounding fuse and displayed only when the connected positive or negative terminal is being grounded If all items described above test OK the inverter shows a corresponding message in the display top line along with the date and time Clock malfunctioning or other non function related faults meaning faults that do not affect the inverter s ability to generate energy are shown in the second line of the display instead of the date and time The following error messages could be displayed CLOCK FAILURE Indicates clock malfunction contact Technical Support BATTERY LOW ADJ TIME Appears the first time the unit is powered up or after the battery has been replaced FAN FAILURE Does not affect the inverter s proper operation replace the fan at the first convenient opportunity MEMORY FAILURE Data logging malfunction Contact Technical Support 4 2 4 NORMAL START UP PROCEDURE Normally the Aurora in
86. pendix Table 7 1 The AURORA inverter should be connected only to a dedicated branch circuit Power One DOES NOT provide AC output overcurrent protection it is the responsibility of the end user to provide protection for the AC output circuit All photovoltaic source and output circuit conductors shall have disconnects complying with the NEC Section 690 Part Ill A DC switch should be inserted when not integrated in the inverter The S and A models have an integrated DC switch 1 2 2 Safety Instructions A I A power on e Ad A MEMBER OF THE ABB GROUP WARNING These servicing instructions are for use by qualified personnel only To reduce the risk of electric shock do not perform any servicing other than that specified in the operating instructions DANGER Be sure all flammable materials including construction items are away from the unit Do not install the inverter in or near potentially explosive areas CAUTION The AURORA is designed without an isolation transformer and is intended to be installed per NFPA 70 690 35 with an ungrounded PV array These models have no grounded input conductors The installer and or operator must properly protect the installation from access by the public and or highlight with signs or notices the potential hazards of the equipment e g magnetic fields hazardous voltages high temperatures possibility of discharges generic hazard etc Page 7 of 89 Technical Manual
87. play try to identify the type of fault found by following the instructions below 5 1 ARC FAULT DETECTION SELF TEST ERRORS GA MODELS ONLY For A models only an autotest circuit is included in the module design of Power One s DC ARC FAULT DETECTOR and INTERRUPTOR AFDI solution The AFDI performs a self test when the system is started ie every morning when sunlight is sufficient for grid connection The inverter display shows the results of the self test If the self test results are OK the inverter will continue to AC grid Test ARC connection Sensor OK If a potential problem on the AFD board is detected the self test will result AF Self Test in error Refer to Table 5 1 to clear the error and possible solutions E053 During normal operation while the inverter in connected to the grid the input current is continually measured and analyzed If a DC arc fault is detected the inverter is disconnected from the AC grid ARC FAULT and the following error will be shown on the inverter display E050 Press and hold the ESC key for three seconds to clear the error which will start the self test If self test results are OK the inverter will re connect to the AC grid If the DC arc fault is still present the self test will result in error E053 Refer to Table 5 1 to clear the error and possible solutions When the AFD protection trips continously an electrical arcing has taken place In this case Power One recommends a complete and acc
88. ppears 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 triggered 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 BCG 00681 NA 2 2 Solution 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 Power One Service 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 contact 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 Power One Service Error inside the inverter that cannot be ch
89. put Voltage Full Power 200 530 V 3 DC input data Max Input Current 10A Max Input Short Circuit Current P V Panels 12 5 A Nominal Output Voltage 277 V 240 V 208 V 10 Operating Voltage Range 244 304 V 211 264 V 183 228 V Nominal Output Frequency 60 Hz factory preset 1 Product origin 2 Model name 4 AC output data 5 Certification Operating Frequency Range 59 3 60 5 Hz Output Power Factor 20 995 Max Output Current for each phase 12A 14 5A 14 5A rms Max Continuous Output Power 3000 W 55 C amb Max Output Overcurrent Protection 15A 20A 20A Operating Ambient Temperature 25 to 60 C 13 to 140 F with Output Power Derating Technical data reported in this manual does not lpr aac DC Ground Fault Detector Interrupter is Provided For More Details Refer to the Instructions Manual For each of the two input channels the equipment C Adjustable from 57 0 Hz to 59 8 Hz Adjustable from 60 2 Hz to 63 0 Hz substitute the data mentioned on the labels affixed to This device complies with Part 15 of the FCC Rules Operation is subject to the following two conditions 1 this device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesidered operation Figure 1 1 Sample nameplate for PVI 3 0 OUTD US power on z A MEMBER OF THE ABB GROUP Page 11 of 89 Technic
90. r diagnostics and or a product replacement Table 5 1 Messages and Error Codes Display Message Causes Solution Ground Fault The alarm is generated when a ground If possible measure the insulation resistance using a Red LED leakage current is detected in the DC megohmmeter positioned between the photovoltaic field section of the system positive terminal short circuited to the negative pole The alarm is accompanied by the lighting and ground up of the red LED on the front of the If the measured value is less than 1 mega ohm the inverter photovoltaic generator must be checked by a technician installer to identify and eliminate the problem If the measured value is greater than 1 mega ohm and the error warning continues to be present contact Power One Service E001 The alarm appears when the inverter Check whether the composition of the PV generator Input OC input current exceeds the set allows an input current that exceeds the maximum overcurrent threshold 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 Power One Service Input Overcurrent E002 This alarm is indicated when the inverter Measure the input voltage in the inverter with a Input OV input voltage coming from the PV voltmeter generator exceeds the operating If it is higher than the maxi
91. rc fault and interrupt the circuit This functionality is commonly referred to as a DC AFCI Power One s DC ARC FAULT DETECTOR and INTERRUPTOR AFDI solution is based on Digital Signal Processor DSP technology The AFDI module has two independent channels designed to accommodate the two independent MPPT channels associated with all Aurora String inverters and has two current sensors and associated circuitry to identify the presence of a series DC arc fault at the input of either inverter MPPT channel The DC AFDI module performs a self test every time the system is started and the inverter display shows the result which can only be pass or fail If it fails an error code will be displayed and the inverter will not connect to the grid If it passes the inverter connects and operates normally If a DC arc fault is detected during normal operations the inverter disconnects from theAC grid The DC arc fault error is indicated on the inverter display screen and lock out of inverter operation is initiated until the fault is manually reset Refer to section 5 2 ARC FAULT DETECTION SELF TEST ERRORS A MODELS ONLY for display error messages and instructions to reset fault conditions or manually start the self test procedure 1 4 AVAILABLE VERSIONS This document applies only to the following transformerless inverter models which can be divided into four groups according to their rated output power of 3 0 kW 3 6 kW or 4 2kW PVI 3 0
92. ressed in the set B 0 0 currency 4 E tot Total energy output since first installation E par Partial energy output during the period selected by user E par 0 KWh 5 P out Measures instant output power m m S OU The second line of the display shows the higher of the two T boostl C temperatures e T boost1 Booster channel 1 switching device temperature e T boost2 Booster channel 2 switching device temperature 6 Ppk Maximum peak power achieved since the partial function was activated Ppk Day Indicates the maximum peak power achieved during the day The counter will reset when unit is powered OFF 7 Vgrid Measures instant grid voltage Vgrid 197 V Vgrid Avg Average grid voltage during the last 10 minutes of Vgrid Avg OV inverter operation 8 Ierd Measures instant grid current Igrid Fgrid Measures instant grid frequency Fgrid 50 18 Hz 9 Vin1 Instant input voltage value measured at channel 1 input Vint OV lini Instant input current value measured at channel 1 input ge ene 10 Vin2 Instant input voltage value measured at channel 2 input Vin ov lin2 Instant input current value measured at channel 2 input HERO DA If the inverter configuration is set for single input Parallel mode this TU qi screen appears instead of the two screens described in 9 and 10 lin 00A 11 Pin1 Measures instant input power of channel 1 Pin2 Measures instant input power of channel 2 Pin2 OW power
93. ressing the UP and DOWN Programming Control keys Pressing the ESC key gives access to three main menus Statistics Settings Info To return to the preceding menu press the ESC key The Statistics Settings and Info menus can be accessed with just the array connected Some parameters e g current voltage power partial energy lifetime energy etc are available only after grid connection Activation of cyclical scrolling will be indicated by two arrows in the top left corner of wg m 1 the two line display 4 d a Scrolling can be blocked by pressing the ENTER key A padlock symbol will appear poer one A d MEMBER OF THE ABB GROUP Page 36 of 89 The MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 4 Operations Guide NA 2 2 In their various combinations the LEDs can indicate conditions that are different from the single one The following table shows the possible combinations of LED signalling indications related to the operational status of AURORA Inverter LED BEHAVIOR Dx LED off LED on AL d flashing Any condition LED STATUS OPERATIONAL STATE DESCRIPTION Inverter off AURORA self Input voltage and or power are not sufficient to switch disconnects during night on the inverter STAND BY Inverter Transition state during which the inverter is waiting for initialization sufficient sunlight to start The inverter checks the parameters necessary for connection to the grid such as input voltage
94. rgy harvested from the PV array into a form that can be transported to the connected AC grid and by doing so enables the energy to be used to power grid loads Connections of an inverter to the grid is a very controlled process not only in the actual electrical connection but the regulatory processes required to gain approval from the controlling utility and other regulatory bodies AURORA UNO Inverters meet the requirements of all interconnection standards 7 2 5 2 Data Transmission and Check The AURORA Inverters have a sophisticated communication capability that enables monitoring of single or multiple inverters over a single communication link Remote monitoring is implemented over an RS 485 based serial interface using a version of the AURORA Protocol There is an optional web based data logging system AURORA Universal also available for remote monitoring via the Internet via LAN or GSM digital modem The PVI Desktop is another monitoring option that enables with the use of the PVI Radio module installed in each inverter the ability to monitor wirelessly operation of up to six inverters within a 1000 foot radius The PVI desktop is not a web based monitoring system and is intended for local in house monitoring applications 7 2 5 3 Anti Islanding When the local utility AC grid fails due to a line fault or otherwise interrupted e g equipment maintenance the AURORA UNO Inverter must be physically disconnected in a fail safe manner
95. s voltage and frequency values check 2 secs This displays the instant output voltage value and whether it is within outside range status This displays the instant output frequency value and whether it is Fgrid 50 17 Hz within outside range status In range If the measured instant values of voltage Vgrid and frequency Fgrid are outside the allowed range the above three screens scroll alternately Next connections gt Vgrid Fgrid 4 2 2 ERROR MESSAGES After the connection is established the inverter runs a test cycle If the wrong data is found the cycle is interrupted and an error code is displayed Refer to Table 5 1 in Troubleshooting for error codes and their meanings Until the error is rectified the following screens are alternately displayed Once the error is cleared the inverter resets all functions in progress and restarts the connection Power one A d A MEMBER OF THE ABB GROUP Page 39 of 89 The MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 4 Operations Guide NA 2 2 4 2 3 FIRST PHASE ELECTRIC PARAMETER CHECK If the measurements taken previously see section 4 2 1 are found to be correct the system will proceed to the next checks The twelve screens outlined below are scrolled alternately on the display 1 Inverter type and part number 2 Inverter serial number and firmware revision level 3 E da Daily energy output E d 0 Wh da Daily energy savings The value is exp
96. s Hel Grid Parameters SN 839182 PVI 4 2 OUTD US UL1741 Single This screen shot is the fixed setting defaults per U gt 264 00 IEEE1547 which states for line frequency f U gt gt 288 00 Ue 211 0 e Iffisinthe range 59 3Hz lt f lt 60 5 L the inverter operates normally m e Ifffalls below 59 3Hz the inverter must JE 60 5 Hz disconnect within 160ms e V V V V 60 5 Hz There is only one set point associated with the Under Frequency in this scenario P uu Timeout f e f lt set point gt the frequency value en h Timeout f below which the inverter disconnects within 160ms value used is 59 3Hz e Timeout f lt gt this timeout is set to 160ms The voltage values shown are based on the 240V default Figure 4 7 Fixed Parameter Model e NJ MEM BER OF THE ABB GROUP Page 60 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 NA 2 2 PART5 TROUBLESHOOTING AURORA UNO Inverters comply with the standards set for grid tied operation safety and electromagnetic compatibility In case of any possible malfunction of the inverter solve problems as follows 1 Work under safe conditions Check that the connections between AURORA photovoltaic field and power distribution network have been made correctly as stated in Part 1 Introduction amp Safety and Part 3 Mounting amp Wiring 2 Carefully observe which LED is flashing and read the signal appearing on the dis
97. sasse kesr ea a nassaan isase 71 Table 6 1 Component Disposal 72 power one A MEMBER OF THE ABB GROUP Page 89 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 7 Appendix NA 2 2 E 7215 DASS a E uerum md mena IM HI III eee ee eee ee eee 73 Table 7 1 Voltage and frequency limits for utility Ipnteracton 75 Figure 7 1 Efficiency Curve PVI 3 0 OUTD US DON 75 Figure 7 2 Efficiency Curve PVI 3 0 OUTD US DA0VL nemen nnnm nennen nnne rn nnn nnne nnns 76 Figure 7 3 Efficiency Curve PVI 3 0 OUTD US DZ 76 Figure 7 4 Efficiency Curve PVI 3 6 OUTD US DON 77 Figure 7 5 Efficiency Curve PVI 3 6 OUTD US DA0VL nemen nn nn nnn nnn nensis nnns 77 Figure 7 6 Efficiency Curve PVI 3 6 OUTD US DZ 78 Figure 7 7 Efficiency Curve PVI 4 2 OUTD US DON 78 Figure 7 8 Efficiency Curve DVL A 2 OUTDUS DA0VL nnne nennen nennen nnn nnns nnns 79 Figure 7 9 Efficiency Curve PVI 4 2 OUTD US DZ 79 Figure 7 10 Power derating over Temperature range 25 to 60 C at 208V ac output 80 Figure 7 11 Power derating over Temperature range 25 to 60 C at 240V ac output 81 Figure 7 12 Power derating over Temperature range 25 to 60 C at 277V ac output 81 Here 751955 BOC BIS Elf eee een eee md adum eee E eer EEE EE 84 Number NA 1 0 Rev AA BCG 00681 Tech docs 6 14 2013 Combined manual for front facing and bottom DC NA 2 0 Rev AA switch Incorporated Addendums BCA 00015 BCG 00025 BCG 00607 BCG 0
98. sions only When Arc Fault Detection AFD is installed the paralleling must be done inside the inverter Figure 3 16 Bottom switch wiring box parallel configuration and Front switch A versions onl In the inverter box parallel the two MPPT inputs of terminal IN1 and IN2 and IN1 and IN2 as shown in Figure 3 16 using the two 10 AWG jumper wires provided one black and one red cable to connect the input SA ER Ad kd Zell Figure 3 16 Bottom switch jumpers for parallel MPPT Configuration and Front switch A versions only power one A d MEMBER OF THE ABB GROUP Page 27 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 3 Mounting and Wiring NA 2 2 3 3 2 AC GRID CONNECTIONS AC output overcurrent protection is not provided with the Aurora it is the responsibility of the end user to provide overcurrent protection for the AC output circuit AC grid wiring is connected through the inverter switchbox Run an approved raceway between inverter and external AC disconnect switch Make conduit entry through openings B or E shown in Figure 3 3 and Figure 3 4 Connect AC wiring to switch box terminal block J and the main AC ground cable to switchbox terminal block K Figure 3 17 Front switch Figure 3 18 Bottom switch AC grid terminal AC Grid terminal Table 3 4 which is also on a label within the switch box shows AC wiring connec
99. sk from its cover Insert the disk into the computer to install the program The installation will create an icon on the P computer desktop e Connect the adapter from inverter to the computer Depending on the configuration determine the type of converter needed RS485 RS232 or RS485 USB in section 3 3 4 1 above For more a more comprehensive monitoring solution please see Power One s AURORA Vision product line at www power one com 4 4 1 SERIAL CONNECTION WITH USB PORT Serial connection through use of the inverter s USB port allows connection of a single inverter to a personal computer equipped with a USB 2 0 interface and dedicated software supplied by Power One The PC inverter connection cable is a standard USB 2 0 cable 5 meters long with terminals of the A and B type Remove the waterproof plug located on Aurora s USB side to make the USB connection Plug 4 4 1 1 Installation Guide for a Direct Connection from Aurora to Computer via USB Windows XP and 7 32 amp 64 bit A driver installed on a computer or laptop will be necessary to communicate with the Aurora Inverter using a USB connection Download the driver USB Driver Files from the installation CD included with this inverter or from the Power One website and follow the process described below power on A d A MEMBER OF THE ABB GROUP Page 52 of 89 The MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 4 Operations Guide NA 2 2 e The first step extracts the f
100. sy chain connection is required for AFD installed inverters use standard multiconductor a RS 485 cable and connect the three RS 485 leads RTN T R T R using only the mating connector in Figure 3 13 Do not connect pin 4 of RJ45 connector in any case with AFD installed inverters 3 3 4 1 Connection amp Cabling Per the RS 485 standard it is possible to connect up to 31 AURORA Inverters on one RS 485 bus link however the feasibility of this arrangement is dependent on the type of cabling used for the link and the workmanship of the bus connections Also most data loggers are limited by the manufacturer as to the total number of slave units connectable Please verify all aspects of the intended communication system and components before attempting to install a monitoring system The recommended length of total communication cable line for all inverters in the system is 1 000 meters 1094 yards or less and this distance capability depends strongly on the cable type used and installation workmanship Depending on the type of computer used the cable line adaptor can be RS 485 RS232 or RS 485 to USB In order to ensure optimum communication on the RS 485 line Power One recommends connecting the RS 485 converter to a location between the first unit in the daisy chain or multi unit system configuration and the computer not in between two inverters in the series Using the appropriate cable connect all the Aurora Inverter units RS 485 lines
101. t these junctions The SH terminal is provided as a floating tie point for this purpose It allows shields drain wires from incoming and out going daisy chain cables to be secured together but not grounded If using standard multi conductor RS 485 cable locate the mating connectors provided in hardware bag for the terminal block Connect the three RS 485 leads RTN T R T R to the mating connector corresponding points NYWVWYWYYWWYYVYY LELLILIL I d d e one A d A MEMBER OF THE ABB GROUP Page 31 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 3 Mounting and Wiring NA 2 2 If the installation uses multiple inverters such that the RS485 cable must be daisy chained to another inverter then there can be two RS 485 cables inside the inverter chassis Each cable will have three wires that must be connected to the inverter Strip insulation from all six wires and connect the wires from the first cable to one of the two mating connectors found in the hardware bag and connect the wires from the second cable to the other mating connector There are two rows of holes in the chassis terminal block shown in Figure 3 19 Insert each mating connector into a row on the terminal block When the cable used has a shield drain wire this should be connected to the LNK terminal 3 3 4 DAISY CHAIN MULTI UNIT CONFIGURATION The RS 485 terminal block or RJ45 connectors are used in a multi unit daisy chain If a dai
102. temperatures is ambient temperature has returned within the range carried out internally and is affected by contact Power One Service Remember to wait for the the heat dissipated by the components of time necessary to allow the inverter to cool down the inverter External temperature above 60 C This parameter also depends on the power that the inverter must supply since the Error inside the inverter that cannot be checked externally If the problem persists after switching the inverter off and then on again contact Power One Service Error inside the inverter regarding a problem in the bulk capacitors Error inside the inverter that cannot be checked externally If the problem persists after switching the inverter off and then on again contact Power One Service The alarm is generated when a problem is detected in the inverter circuit part DC AC Error inside the inverter that cannot be checked externally If the problem persists after switching the inverter off and then on again contact Power One Service Error inside the inverter regarding the time for starting steady state operation of the DC AC circuit part Inverter If possible measure the insulation resistance using a megohmmeter positioned between the photovoltaic field positive terminal short circuited to the negative pole and ground M If the measured value is less than 1 mega ohm the PV accompanied by the lighting up of the generator must b
103. ter ensures top power up to 40 C ambient temperature when it is not directly exposed to the sun Figure 7 10 Power derating over Temperature range 25 to 60 C at 208V ac output power o TE MEMBER OF THE ABB GROUP Page 81 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 7 Appendix NA 2 2 PVI 4 2 OUTD Figure 7 11 Power derating over Temperature range 25 to 60 C at 240V ac output PVI 4 2 OUTD OS Figure 7 12 Power derating over Temperature range 25 to 60 C at 277V ac output A MEMBER OF THE ABB GROUP power one Page 82 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 7 Appendix NA 2 2 Power reduction due to input voltage The graph below shows automatic power output derating when input or output voltage is too high or too low Output Power two Dc sections operating Power W Voltage Derating Range Non Operating Range Power Derating max input current Non Operating Range 90 180 Input 530 580 600 voltage V Necessary conditions for power derating due to environmental conditions and to input voltage can occur at the same time but in this instance power derating will always consider the lowest value detected Output Power one Dc section operating Power W Voltage Derating Range Non Operating Range Power Derating N Non Operating Range max input current 90 180 Input 530 580 600 voltage V
104. th optional DC Switch and Wiring Box A MEMBER OF THE ABB GROUP power one power on Page 75 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 7 Appendix NA 2 2 7 1 1 VOLTAGE AND FREQUENCY LIMITS The UL1741 requires the following voltage and frequency limits for utility interaction Table 7 1 Voltage and frequency limits for utility interaction Simulated utility source Maximum time sec at 60 Hz before cessation of Condition Voltage V Frequency Hz current to the simulated utility f 59 3 Default 0 16 sec Default Adj Set Points 59 7 Hz Adj Set Points 0 16s to to 57 Hz 300s f lt 57 0 Default Fixed 0 16 sec Fixed f gt 60 5 Fixed 0 16 sec Fixed Note For model at 277V High Voltage is fixed at 110 Vnom and Very High Voltage is fixed at 111 Vnom Note for model at 208V Very Low Voltage is fixed at 55 Vnom Minimum adjustable Low Voltage level is 55 Vnom B D Rated 7 1 2 EFFICIENCY CURVES CEC Efficiency 96 0 Efficiency 200 Vdc ill 310 Vdc t 480 Vdc 0 10 20 30 40 50 60 70 80 90 Of Rated Output Power Figure 7 1 Efficiency Curve PVI 3 0 OUTD US 208V poer one NA MEMBER OF THE ABB GROUP Page 76 of 89 Part 7 35 90 85 as gt O E KE L d UI 80 9 70 0 10 95 90 85 Efficiency 80 75 70 0 10 Power on Ka TECHNICAL MANUAL PVI 3 0 3 6
105. the input voltage required to start the inverter Vstart is 200 Vdc however this can be set from the control panel over the range between 120 Vdc and 350 Vdc This voltage level is required for the AURORA Inverter to start its grid connection sequence Once connected the inverter will transfer the maximum available power for any Vdc input voltage value in a range between 70 of the value set by Vstart and 580 Vdc to the grid 7 2 3 NOTE ON DIMENSIONING OF THE SYSTEM Decisions about how to structure a photovoltaic system depend on a certain number of factors and considerations to meet 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 Power One website at www power one com poer one NA MEMBER OF THE ABB GROUP Page 86 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 7 Appendix NA 2 2 7 2 4 TECHNICAL DESCRIPTION OF AURORA INVERTER The main segments of the design are the independent input DC DC converters termed boosters one for each MPPT channel and the main output inverter Both of the DC DC converters and the output inverter operate at a high switching frequency to enable a compact design and low weight These versions of Power One s AURORA Inverters utilize high frequency switching transformers to provide a high level of galv
106. tions according to the AC grid type connect wiring to the numbered terminals as shown Size conductors per NEC Article 310 use only 90 C copper wire only Terminal block accommodates conductor types shown refer to Table 3 2 and Table 3 3 for wire sizing Table 3 4 AC Grid Standard STANDARD 208V 240V 277V 3PH A 3W SPLIT PHASE 3PH Y we u w u u s s uwi IMPORTANT If several Aurora inverters are installed to a three phase AC GRID always distribute the inverters between the phases in order to reduce power imbalance between the phases Always refer to the local standards A The default AC grid connection 240Vrms 3W Split Phase requires the Neutral terminal to be connected to the grid neutral conductor for proper operation Before connecting the inverter to the grid the grid type must be selected if it differs from the default 240V SPLIT PHASE setting See Operations section 4 2 5 2 Set Vgrid for instructions to change the default ver One NA MEMBER OF THE ABB GROUP Page 28 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 3 Mounting and Wiring NA 2 2 3 3 3 SIGNAL WIRING CONNECTIONS The AURORA Inverters have remote monitoring capabilities which are accessed externally using an RS485 communication port The inverter is provisioned with the communication capability as a standard feature All that is needed for remote monitoring is hardware which connects to the RS 485 port and
107. to discard any equipment parts or manuals e Call the delivering carrier if damage or shortage is detected e lfinspection reveals damage to the inverter contact the supplier or authorized distributor for a repair return determination and instructions regarding the process Table 2 1 Carton Contents QTY Description QTY Description AURORA Inverter 1 Bag containing hardware 6 3 x 70 screws Inverter Mounting plate gt Red Cable AWG 10 Black Cable AWG 10 6 x 10mm machine screw Quick Installation Guide Certificate of Warranty e e HH H CD ROM containing Communication Software Technical Manual Warranty TE BET TE Terms and Conditions power one A MEMBER OF THE ABB GROUP e Un e FP k P A Torx 20 wrench Page 13 of 89 Technical Manual PVI 3 0 3 6 3 8 4 2 TL Part 2 Unpack and Select Installation Location 2 2 SELECT INSTALLATION LOCATION BCG 00681 NA 2 2 The installation must be done by qualified installers and or licensed electricians according to the applicable local code regulations National Electric Code Canadian Electric Code and other 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 2 2 1 1 Environmental Check e See Technical Data in Appendix Part 7 to check the environmental parameters to be observed degree of protection temperature humidity altitude etc
108. trical grid The inverter shows Missing Grid message on display poer one A d MEMBER OF THE ABB GROUP Page 37 of 89 The MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 4 Operations Guide NA 2 2 4 2 COMMISSIONING Do not place any items on the AURORA Inverter during operation EN Do not touch the heat sink when the inverter is operating as some parts may be hot and cause burns The procedure for commissioning AURORA Inverter is as follows 1 Set the inverter s DC disconnect switch to ON 2 Set the AC disconnect switch to the inverter to ON NOTE There is no specific order for closing the two switches 3 Once both disconnects are closed the inverter starts the grid connection sequence This routine is indicated by the flashing green LED labeled POWER on the display This routine may take from 30 seconds up to several minutes depending on grid condition Three screens are displayed in sequence on the LCD during this routine e Measuring Riso connection in progress with progress signal Riso insulating resistance e Grid voltage value and status compared to specified values within outside range e Grid frequency value and status compared to specified values within outside range 4 When the connection sequence is completed the AURORA Inverter starts operating Proper operation is indicated by a warning sound and the steady green LED lights This means the sun radiation is sufficient to feed the grid
109. urate check of DC connections The AF self test can be manually started anytime using the following procedure 1 Turn off the inverter switching off both DC and AC switches and 2 Turn on both the DC and AC switches waiting for display communication of self test result power one A MEMBER OF THE ABB GROUP Page 61 of 89 The MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 5 Troubleshooting NA 2 2 5 2 MESSAGES AND ERROR CODES The system status is identified through message or error signals displayed on the LCD The following table briefly describes the two types of signals which may appear Messages identify the current status of the Aurora inverter Messages do not relate to a fault When a W with a number after it appears in the display it indicates a Warning Code and is usually cleared through an orderly shutdown re set or a self corrective action performed by the inverter See the W codes in the following table Alarms or E codes identify a possible equipment failure fault or incorrect inverter setting or configuration However some of the E codes may require Power One Technical Support to assist in correcting a fault Any and all attempts to correct or clear a fault must be performed by qualified personnel Typically the E code can be cleared once the cause or fault is removed Some of the E codes Int Error as indicated in the table below may indicate a fatal error and require Power One technical support fo
110. ured NOTE If it is not possible to find the inverters check the cabling on the RS 485 Bus and the inverter address from the inverter display Figure 4 5 Select Mode Panel BCG 00681 NA 2 2 All Inverters power on A d A MEMBER OF THE ABB GROUP Page 57 of 89 The MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 4 Operations Guide NA 2 2 STEP 3 Set the Grid parameters Aurora Manager TL immediately recognizes the inverter Country and Grid Standard and will display the Voltage and Frequency Parameters according to the Grid requirements Figure 4 6 Press the READ button to acquire the actual values The inverter factory settings cause automatic disconnection from the grid in 160ms when line frequency is outside the range of 59 3 Hz f 60 5 Hz Press the Write button to change values of desired parameters to those required by the local utility The symbols on this screen are defined in Table 4 1 below An example of how these settings are used is shown in Figure 4 7 NOTE When the frequency and disconnect time values have been changed turn OFF and ON the DC power in order to preserve the new data m File TEEN Inverters Hel Grid Parameters SN 839182 PVI 4 2 OUTD US UL1741 Single U gt 264 00 288 00 211 0 120 0 60 5 60 5 Timeout f gt Timeout f lt Figure 4 6 Grid Parameters Panel Cr ONne A d A MEMBER OF THE ABB GROUP Page 58 of 89 The MANUAL PVI 3 0 3 6 3
111. verter Fail Inverter module error revealed by Booster E017 Start Timeout Inverter module start up timeout E018 Ground Fault Leakage current fail poer one BCG 00681 NA 2 2 The MANUAL PVI 3 0 3 6 3 8 4 2 TL Troubleshooting Causes Solution Error inside the inverter that cannot be checked externally If the problem persists after switching the inverter off and then on again contact Power One Service Error inside the inverter regarding the operation of the DC DC circuit part Booster 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 configuration of the inverter and the characteristics of the PV generator comply with the specifications contact Power One Service 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 and the alarm is raised if the two voltages differ by more than 20Vdc 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 measurement of the
112. verter operates automatically and needs no particular supervision When sunlight is not enough to generate power for the grid for instance at night the Aurora disconnects automatically and goes into standby mode The operating cycle is resumed automatically when sunlight becomes strong enough This is indicated by the LEDs on the front panel display Depending on the DC input voltage present the inverter behaves as follows power on When the inverter is switched ON it will start as soon as the input voltage value exceeds the set Vin start value The inverter will display the message Waiting Sun until the input voltage exceeds the set Vin start value When the Vin start value is exceeded the inverter will connect to the grid if it is identified or it will display the message Vac absent if the grid is not connected The inverter will remain connected to the grid if the input voltage is between 70 of the Vin start set and 480 Vdc If the input voltage value is outside this range the inverter disconnects itself from the grid A d A MEMBER OF THE ABB GROUP Page 41 of 89 The MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 4 Operations Guide NA 2 2 4 3 DESCRIPTION OF THE MENUS The three main menus enable monitoring of the inverter s operations and are outlined below To access the menus from the initial screen press the ESC button Use the UP and DOWN keys to scroll through the three menu and press ENTER to make a selection
113. w Table 3 1 Switchbox External Parts Summary DC power cable opening with plastic A age j E threaded plug trade size 1 1 1 4 AC power cable opening with plastic E threaded plug trade size 1 1 1 4 DC Disconnect Switch Signal cable opening with plastic H threaded plug 1 2 trade size The DC disconnect switch disconnects the DC current from the photovoltaic panels when the switch is in OFF position The inverter will stop producing power but it DOES NOT disconnect the AC from the grid To disconnect the inverter from the AC grid an AC switch not included in this AURORA A Inverter s switchbox must be disconnected It is the responsibility of the installer to provide external disconnect switches and Overcurrent Protection Devices OCPD as required by National Electric Codes and other prevailing regulations poer one NA MEMBER OF THE ABB GROUP Page 20 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 3 Mounting and Wiring NA 2 2 The DC switch is a four pole device rated at 25A contact If operating in the parallel mode feed both sets of input terminals to ensure the total input current is divided between the two sets of switch contacts to guarantee the switch current specifications are not exceeded DC SWITCH BOX INVERTER IN1 IN1 DC IN IN2 IN2 Figure 3 6 Front switch wiring box details Figure 3 7 Bottom switch wiring box details DWEeF aonmeg
114. w Low input voltage during switch on of the inverters One Service W002 Insufficient irradiation Wrong Check the inverter input voltage Input UV configuration of the photovoltaic If it does not exceed the Vstart check that there is generator or a configuration at the sufficient irradiation and that the composition of the limit as regards the minimum input system is correct If it exceeds the Vstart contact Power Low input voltage voltage of the inverter One Service during switch off W003 This error warning appears during normal Check the grid voltage on the inverter If absent check Grid Fail operation of the inverter when the grid for the absence of grid voltage on the supply If the parameters fall outside the limits set by voltage tends to rise when the inverter is connected it the grid company means there are high line or grid impedances Check the No grid voltage after the warning the grid voltage on the supply as well if it is high it means inverter goes on No Vac Unstable grid there is high grid impedance In this case ask the grid voltage downwards and upwards company to adjust the grid voltage If the grid company Unstable grid frequency 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
115. wo additional screws in the two holes shown as position A below Step 1 Using the mounting bracket as a template locate and mark the desired mounting location Step 2 Using the four screws provided level and mount the bracket to the surface using mounting holes B Two additional screws can be used in A if necessary Step 3 Orient the bracket such that the hooks in position C face outward and upward Step 4 Hang the inverter on the mounted bracket by lifting the unit up and over the mounting plate Guide the inverter and switchbox brackets engaging the brackets C D and E F on the back of the inverter Step 5 Secure chassis bottom using the machine screw and washer provided through center hole H Engage the threaded insert in the bracket G Add additional screws as necessary through bottom flange securing to mounting surface Figure 3 1 Bracket and Mounting Details power o TE MEMBER OF THE ABB GROUP Page 17 of 89 TECHNICAL MANUAL PVI 3 0 3 6 3 8 4 2 TL BCG 00681 Part 3 Mounting and Wiring NA 2 2 3 2 WIRING DETAILS This section is dedicated to initial installation wiring of the AURORA Inverter and assumes the unit has been physically mounted in its final location but not yet wired A If the inverter has been previously wired and connected to the PV array and or the AC grid refer to Part 6 Maintenance for disconnection procedures Failure to comply with these instructions can result in safety hazards

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