Home

The Technical Manual:

1. 92 MESSAGES AND BRROR CODES edet sin D a A 92 16 4 VERIFICATION OF GROUND LEAKAGE eere tete toten te tonto se totae sesso sesso sese sesenta so santos sos n ssIs 105 POS THEPOWEROONESERVIGE CALL tss tss ie tm aeri te s eon ee due e pete Lond 107 17 MAINTENANCE aaa EO UT EU DAE CORR CU QU UE DU VATIC OI DEAE UO DC RR 109 1572 GENERAL CONDITIONS c t 109 17 2 MEASURING THE INSULATION RESISTANCE RISO pert outer h e ruota iuc tuse aerei e va Debet buie rh Een naso pa Eds 111 17 GIORAGEANDJDISMANTLING Ne Raha LA a UA DAE 111 Ib SHUFDONWNPROCEDURE 2 tad edicit e ent rt 112 I5 POWER DOWN PROCEDURES cata d reges aera d idet 112 TAGO CRZO0SZLITIHUM BATTERY BBPEAGEMENT nitentes aeta T catena vert Duet Eus Fem too vet 113 18 TECHNICAL DAT Aide quidc ne x E GRE an COLO EDRRE XAR DERLUEURORE DU IR E LUOU UD RU DA ELEC Cn EC OG RERO 115 DADESHBEPSQISDLusuc NC ena c LIA LIN I LU LII Lm LO Eu 115 PARTIAL B ues cL E ML LIU luu un Uic uf 116 UTILITY INTERACTIVE INVERTER MODELS UNO 2 5 I OUTD US UNO 2 5 I OUTD S US ere 116 18 3 UTILITY INTERCONNECTION AND VOLTAGE AND FREQUENCY TRIP LIMITS
2. 13 3 1 WARNINGS INTS DOCUMEN 13 3 2 EOUPMENTILA DED idene ee 14 3 3 CENERALE INTA LEA TION W ANNIN GS EEEE EEE E 14 3 4 APPROPRIATE U A T T ee ee ee 16 3 5 IN TRU E 17 3 6 LEOCATIONOESABETT 20 4 FUNCTIONALITY AND COMPONENTS OF THE 23 4 1 IATA TRAN SINS CONTRO Misses 23 4 2 A ME 23 4 3 eere VI 23 4 4 POWERON OPFER MOTE anaa 23 4 5 ian eiu MM UEM UM MM ME 23 4 6 uu IIR p E 23 4 7 eee ee ee MEME MEME IU MEME DM EI E 24 4 8 PROTECTIVE DEVICES WITHIN THE AUBRORA IN VER VER 24 S UNPACKAND 26 5 1 BNPACEING AND C E AE E 26 5 2 TIN TE Oeste EU A 26 6 uva b Du COH dO c tI TI E SU ONE IEEE 27 6 1 dro isst NNN FO cc 27 6 2 IB Icio 28 6 3 EONIDPMENTAVEIGE T csc iere 29 7 SELECT INSTALLATION LOCATION ennai E 29 7 1 NOTES ON DIMENSIONING OF THE SYSTEM
3. UL 1741 PHOTOVOLTAIC GRID TIED INVERTER 5380222 107 101 UTILITY INTERACTIVE MODEL UNO 2 0 OUTD US DC RATING Nominal Input Operating Voltage Mar nul Vote Max hout Shot Circuit Curent PV Paneig Qrar Ania 25 0 40 C 13 16 140 F Power Dein 7 Toe of Erbas NEMA 4X OC Grad Fault Deter tor eter uter is Proved Foe Mere Oetads Rete to De petrae ters Marca Aya tibl tram 57 0Hz 1659 8 Hr Tht device coaplen wih 15 d FCC Ries Operatpo is atja 110 folowing wo 1 This device may case ar mio teers qni 2 Dis device mop taaeet Pareet tared esos pedo Figure 1 1 Label affixed to the inverter 2 5 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 2 6 COMMISSIONING As part of the commissioning process double check the following e Make sure that there is no ground fault e Double check the voltage doesn t exceed specified voltage ratings e See Part 4 on Operations for more information on commissioning and start up e Power One provides commissioning as an additional service offering Please contact
4. 29 7 2 BNUOIRONNENPADCHEONS aer E EEEN mundi HE Od IURI HERE EE HIDE ER 31 7 3 DPEPATIBGOEIAGRAMC 32 7 4 CENERALIN TALLA TION CONDITION 32 7 5 ee ee ee 33 7 6 34 NAMEPLATE 37 PN REV NA1 0 Page 4 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US 9 WALLMOUNTINQGcnsaningtaden iban annonce na eoo ana dd v oto Vi b rA 37 9 1 SLANDARDWERSION VEL M OUINT ENG Gti ine leniter rata etel iren ede eden eaten boe tnl ruens 37 S VERSION P VERSIO DN c 38 10 INSTALLATION divisor civ EIC MER ARR C VOR E RR 39 10 1 OPERATIONS PREPARATORY TO PHOTOVOLTAIC GENERATOR CONNECTION creen nnne tnnt 39 10 2 ELECTRICAL WIRING AND CONNEGTIONS i 41 TU CONFIGURATION p eM DIE DLL DII M D IM I 44 10 4 GRIDOUTPUT CONNECTION AC SIDE Caa Ea conis Rc Ero Dr Eai 51 10 5 CONNECTIONS OF THE SIGNALS TO THE MAIN BOR BD tede Haee ritus d ER pk repentina eua 53 10 6 GRID STANDARD SETTING OF THE COUNTRY AND LANGUAGE DISPLAY eeeeeenrene tenente nnne nnne tnter tentent 63 11 GENERAL CONDITIONS viticole ave des Li vic WR cde VIVIR c Fx ea 65
5. 50 100 150 200 250 300 350 400 450 500 550 Vin Vdc REV NA1 0 Page 124 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US 5 Maximum Output Fault Current and Duration Output Fault Current Fault Current Fault Current Fault Current Voltage PK A RMS A RMS A RMS A 1 cycle 3 cycles Total Duration Models UNO 2 0 I OUTD US UNO 2 0 I OUTD US UNO 2 0 I OUTD US amp UNO 2 0 I OUTD S US 6 UTILITY INTERCONNECTION AND VOLTAGE AND FREQUENCY TRIP LIMITS AND TRIP TIMES VOLTAGE AND FREQUENCY LIMITS FOR UTILITY INTERACTION Condition Simulated utility source Maximum time sec at 60 Voltage V Frequency Hz Hz before cessation of current to the simulated 0 50 Vnor lt V lt 0 88 Vnor Rated 2 Default Adjustable Set Points Adj Set Points 0 16 to 5s 5506 to 8896 C 1 10 Vnor lt V lt 1 20 Vnor Rated 1 Default BN Adj Set Points 110 to Adj Set Points 0 16 to 5s 115 ae ee 1 20 Vy lt V E Rated f gt 60 5 0 16 Default Adj Set Points 60 5 Adj Set Points 0 16 to to 63 0 300s F f 59 3 Default 0 16 Default Adj Set Points 59 7 Adj Set Points 0 16 to to 57 300s a When a utility frequency other than 60 Hz is used for the test the maximum number of cycles it takes to cease to export power to the simulated utility shall not exceed the number of cycles a utility frequency of 60 Hz takes regardless of the time the inverter takes to cease to export power to the simulated u
6. This conversion known as DC to AC inversion is made efficiently without using rotating parts and only through static electronic devices In order to allow the inverter to operate in safe thermal and electrical conditions in the event of adverse environmental conditions or unsuitable input voltage values the unit automatically reduces the value of the power fed into the grid This way the solar energy system compensates for the energy drawn from the utilities connected to the grid to which it is linked The solar energy system therefore powers all connected electrical devices from lighting to household appliances etc When the photovoltaic system is not supplying sufficient power the power needed to ensure normal operation of the connected electrical devices is drawn from the national grid If on the other hand excess power is produced this is fed directly into the grid so becoming available to other consumers In accordance with local and national regulations the power produced can be sold to the grid or credited towards future consumption so bringing about a saving of money 18 7 CONNECTION OF SEVERAL INVERTERS TOGETHER If the photovoltaic system exceeds the capacity of a single inverter itis possible to make a multiple connection of inverters to the system with each one connected to a suitable section of the photovoltaic field on the DC side and connected to the grid on the AC side PN REV NA1 0 Page 133 of 134 The Technica
7. 12 DISPEAY AND o hv n co fo cB On a Ca CONV bz OV LR 65 12 1 DESCRIPTION GOR SYMBOLSAND DISPLAY FIELDS ziehe i ecce ibl act ela 65 12 2 JJDESCRIPTION OF THE KEYPAD s aiite Sis ot pio e toc cR p Ss ca dnd Em EAS Mc I EI DURCH E E EE 67 13 MONITORING AND DATA TRANSMISSION ereerererren nennen nennen nnn tnn nna nn anna tn asma insana sna sn asa aaea 68 IS UJSERINTERPAGCE tetto LA MU IUE 68 13 2 JDYPRSOEDATAJAVAIDABLE edunt aO Equit bi D Eu rtu eH pe Edu RE EE 68 14 dE SI CV Re Cre M m 69 PLI COMMISSIONING PROCEDURE osi edi se ere EGO Nr cde 70 SDISPEAY ACCESS AND SETTINGS ite cites nt dett tecum ero qa 71 IT JDYNAMICBEHAVIOROE THE DISPLAY 2 21 eaa ne edet rni dea ce sede tuta bei aaea 72 15 LED BEHAVIOR iii vicinis cive t Rp Sv TUR Urn FR EUR Cow C ORARE vA V B rd FR RR HG 73 15 1 SPECIFICATIONS ON THE BEHAVIOR OF THE 75 15 2 INSULATION FAULT BED is itio ce t et eic rib uet ue icem iran elegi ceni toi dudes d eee 75 t3 DESCRIPTION OFTHE MENUS asciende MEE ILL ED MM 76 16 TROUBLESHOOTING one daa etico ut nda nva cla td Yos e OT tcc x a MCI ER 91 TO LEDTE c E E uc MU E 91 16 2 SPECIFICATIONS ON THE BEHAVIOR OF THE 5
8. connection to the grid Error inside the inverter that cannot be checked externally If the problem persists after switching the inverter OFF and then ON again contact the Power One Service Department If the grid voltage is strongly distorted report this anomaly to the grid company for the resolution of the problem If there is an inverter fault contact the Power One Service Department REV NA1 0 Page 97 of 134 Internal Error Riso Low PN The Technical Manual UNO 2 0 2 5 I OUTD X US 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 Internal Error Error inside the inverter Low Before insulation connecting to the resistance 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 Error inside the inverter cannot be checked externally If the problem persists after switching the inverter OFF and then ON again Contact the Power One Service Department If possible measure the insulation resista
9. o E 20 The Technical Manual UNO 2 0 2 5 I OUTD X US eta_Vin 200V eta_Vin 330V eta_Vin 416V 30 40 90 60 70 80 90 100 of Rated Output Power Efficiency curves UNO 2 5 I OUTD US 208 Vac grid voltage CEC efficiency curves UNO 2 5 I OUTD US 240 Vac grid voltage PN REV NA1 0 Page 131 of 134 gt gt o 9 10 The Technical Manual UNO 2 0 2 5 I OUTD X US Vin 200V Vin 340V Vin 416V 30 40 2090 60 10 80 90 100 Of Rated Output Power Efficiency curves UNO 2 5 I OUTD US 240 Vac grid voltage CEC efficiency curves UNO 2 5 I OUTD US 277 Vac grid voltage PN 10 89 8 89 0 87 9 REV NA1 0 Page 132 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US eta Vin 200V eta Vin2360V eta Vin2416V gt gt o 9 0 10 20 30 40 50 60 10 80 90 100 Of Rated Output Power Efficiency curves UNO 2 5 I OUTD US 277 Vac grid voltage 18 6 A DESCRIPTION OF THE SYSTEM This equipment is a string inverter that converts direct electric current from a photovoltaic generator into alternating electric current and feeds it into the electric grid Photovoltaic panels transform energy from the sun into direct current DC electrical energy through a photovoltaic field also called photovoltaic generator In order to use it it is necessary to transform the type of current into alternating AC
10. the remote ON OFF function and switch the equipment OFF completely and then switch it ON again If the problem persists after re enabling the remote ON OFF function from the display contact the Power One Service Department Check the grid voltage at the inverter connection point If the grid voltage diverges from the range because of grid conditions ask the grid company to adjust the grid voltage If the grid company authorizes a change to the inverter parameters arrange the new limits with the Power One Service Department Check for the presence and correct contacting of the two terminals of the grounding resistor installed inside the inverter If possible measure the insulation REV NA1 0 Page 102 of 134 Mid Bulk OV E038 Sun Low Input UV PN W001 W002 The Technical Manual UNO 2 0 2 5 I OUTD X US Mid Bulk OV Low input voltage during switch ON of the inverter Low input voltage during switch OFF equipped with grounding kit and is used to monitor the voltage at the ends of the grounding resistor The error appears when the voltage at the ends of the resistor connected between ground and pole of the photovoltaic generator exceeds 30V for more than 30 minutes or 120V for more than one second Error inside the inverter Insufficient irradiation Wrong configuration of the PV generator ora configuration at the limit as regards the minimum i
11. 0 10 Hz Frequency 0 10 Hz Time 2 grid cycles Time 2 grid cycles 33 ms 60 Hz 33 ms 60 Hz See Note 4 See Note 4 Output Power Temperature Derating See Note 4 See Note 4 and Maximum Full Power Operating Notes 1 Inverter models UNO 2 5 I OUTD US UNO 2 5 I OUTD S US have been evaluated for use in utility interactive applications 2 The output of Inverter models UNO 2 5 I OUTD US UNO 2 5 I OUTD S US may be 277 V ac 240 V ac or 208 V ac which is user settable based on the utility system PN REV NA1 0 Page 117 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US 4 Maximum continuous output power can be delivered only with an input voltage range of 200 470 V dc for 208 V ac configuration 200 470 V dc for 240 V ac configuration 200 470 V dc for 277 V ac configuration Maximum output power can be delivered only with an input voltage range of 220 470 V dc for 208 V ac configuration 220 470 V dc for 240 V ac configuration 220 470 V dc for 277 V ac configuration Model UNO 2 5 I OUTD US 208Vac Output Power Derating vs Ambient Temperature Thermal Derating Vout Nominal NC pe 2 O e 2 o 2 c 2 o O gt lt Vin 210Vdc Vin 350Vdc Vin 470Vdc Ambient Temperature C PN REV NA1 0 Page 118 of 134 The Technical Manual PN x a 2 O Yn 2 2 c 2 O O gt lt Max Countinuous Pout KW UNO 2 0 2 5 I
12. 16 to 5s 5506 to 88 1 10 Vnor lt V lt 1 20 1 Default Adj Set Points 110 to Adj Set Points 0 16 to 5s 2 1 20 Vas lt V 0 16 Default Adj Set Points 0 16 to f lt 59 3 Default 0 16 Default Adj Set Points 59 7 Adj Set Points 0 16 to 300s When a utility frequency other than 60 Hz is used for the test the maximum number of cycles it takes to cease to export power to the simulated utility shall not exceed the number of cycles a utility frequency of 60 Hz takes regardless of the time the inverter takes to cease to export power to the simulated utility V is the nominal output voltage rating The rate of change in frequency shall be less than 0 5 Hz per second 18 2 PART B UTILITY INTERACTIVE INVERTER MODELS UNO 2 0 I OUTD US UNO 2 0 I OUTD S US Maximum Input Voltage DC 520 V V de 20 V A Range of Input Operating Voltage 90 520 V dc 340 V dc nominal 90 aoe V dc 340 V dc nominal DC Current DC Current AC Output Power Factor Rating 20 995 20 995 Op erating Voltage Range AC 244 304 V ac for 277 V ac 244 304 V ac for 277 V ac See Note 2 configuration configuration Op 211 264 V ac for 240 V ac 211 264 V ac for 240 V ac configuration configuration 183 228 V ac for 208 V ac 183 228 V ac for 208 V ac configuration configuration erating Frequency Range HZ 59 3 60 5 Hz Default 59 3 60 5 Hz Default 57 0 59 7 Hz 60 5 63 0 Hz Field 57 0 59 7 H
13. 75 deep Fix the bracket to the poll wall with the 3 5 wall anchors 10mm 0 39 in diameter supplied e Hook the inverter to the bracket by inserting the head of the rear screws and the anchor point on the wiring box in the slots of bracket 09 as shown in Figure 3 2 e Proceed to anchor the inverter to the bracket by tightening the locking screw 12 in Figure 3 2 located on the lower side In order to make the necessary connections to follow the procedure below o Unscrew the four screws and remove the wiring box front cover 06 in Figure 3 2 NOTE This cover must be removed prior to opening the Inverter Front Cover below o Unscrew the four screws on the Inverter Front Cover 04 Figure 3 2 NOTE This cover is equipped with fixed hinges and is not intended to be removed from the chassis see diagram at the bottom of Figure 3 2 e Using light pressure pull out and upwards on the cover such that it rotates in an upward arc to its rest position Remove the protective film located on the inverter front cover 04 and display 01 in Figure 3 2 10 INSTALLATION 10 1 OPERATIONS PREPARATORY TO PHOTOVOLTAIC GENERATOR CONNECTION 10 2 CHECKING THE CORRECT POLARITY OF THE STRINGS Using a voltmeter check the voltage of each string and ensure the connection polarity is correct Ensure the measured voltage falls within the input voltage specification limit of the inverter see Part 7 Appendix Technical Data e Ifthe open cir
14. Beer Ser Figure 6 1 Location of lithium battery After battery replacement is completed re install and secure the front panel of the inverter and perform the start up procedure in Part 4 Operations PN REV NA1 0 Page 114 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US PART 7 APPENDIX PN REV NA1 0 Page 115 of 134 18 TECHNICAL DATA 18 1 DATA SHEETS TECHNICAL DATA VALUES The Technical Manual UNO 2 0 2 5 I OUTD X US UNO 2 0 I OUTD US UNO 2 5 I OUTD US Nominal Output Power Rated Grid AC Voltage Input Side DC Number of Independent MPPT Channels Maximum Usable Power for Each Channel Absolute Maximum Voltage Start Up Voltage Vstart Full Power MPPT Voltage Range Operating MPPT Voltage Range Maximum Usable Current Number of Wire Landing Terminals Per Channel Array Wiring Termination Output Side AC Grid Connection Type Adjustable Voltage Range Vmin Vmax Grid Frequency Adjustable Grid Frequency Range Maximum Current Power Factor Total Harmonic Distortion At Rated Power Grid Wiring Termination Type Protection Devices Input Reverse Polarity Protection Over Voltage Protection Type PV Array Ground Fault Detection PV Array Isolation Control Output Anti Islanding Protection Over Voltage Protection Type Maximum Efficiency CEC Efficiency Operating Performance Stand by Consumption Night Time Consumption Communication User Interface Remote Monitoring Wired
15. INSTALLATION POSITION When choosing the installation site comply with the following conditions Install on a wall or strong structure suitable for bearing the weight e Install in safe easy to reach locations f possible install at eye level so that the display and status LEDs can be seen easily Install the inverter vertically to within 5 mounting at any angle outside this range may result in less efficient heat dissipation and automatic limiting of the output power of the inverter To ensure proper access for maintenance and servicing of the hardware and software of the equipment ensure the installation site provides sufficient safety distances around the inverter At the minimum the installation site must allow compliance with the indicated minimum distances e For a multiple installation position the inverters side by side PN REV NA1 0 Page 35 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US OK 000 4 0 x 000 dee e If the space available does not allow the side by side arrangement position the inverters in a staggered arrangement as shown in Figure 2 5 so that heat dissipation is not affected by other inverters Figure 2 5 Installation guidance for UNO 2 0 2 5 I US OUTD PN REV NA1 0 Page 36 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US PART 3 MOUNTING AND WIRING PN REV NA1 0 Page 37 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US 8 NAMEPL
16. Local Monitoring Wireless Local Monitoring Environmental Ambient Air Operating Temperature Range Ambient Air Storage Temperature Range Relative Humidity Acoustic Noise Emission Level Maximum Altitude for Full Power Operation Mechanical Specifications Enclosure rating Cooling Dimensions H x W x D Weight Mounting System Conduit Connections DC Switch Rating Safety Isolation Level Safety and EMC Standard Safety Approval Warranty Standard Warranty Extended Warranty Available Models Standard With DC Switch and Wiring Box All data is subject to change without notice When equipped with optional DC Switch and Wiring Box lt gt lt lt lt lt lt Hz Hz db A 1m ft m in mm Ib kg years years 2000 2500 208 240 277 208 240 277 1 1 2300 2900 520 520 200 adj 120 350 200 adj 120 350 170 470 205 470 0 7xVstart 520 0 7xVstart 520 12 5 12 8 2 Pairs 2 Pairs Terminal block Pressure Clamp 20AWG 6AWG Terminal block Pressure Clamp 20AWG 6AWG 19 2W Split 0 3W 19 2W 19 2W Split 2 3W 19 2W 183 228 211 264 244 304 183 228 211 264 244 304 60 60 57 60 5 57 60 5 10 12 0 990 0 990 2 2 Terminal Block Pressure Clamp 20AWG 6AWG Terminal Block Pressure Clamp 20AWG 6AWG Yes Varistor 2 Meets UL1741 NEC 690 5 requirements GFDI for use with either Positive or Negative Grounded Arrays Yes Varistor 2 Meets UL1741 NEC 690 5 requirements GFDI for use with
17. Manual UNO 2 0 2 5 I OUTD X US 16 TROUBLESHOOTING 16 1 LED BEHAVIOR The following table shows all the possible combinations of activation of the LEDs situated on the LED panel 02 in relation to the operating state of the inverter LED on 64 LED flashing C9 LED off x Any one of the conditions described above Status of the Operating state Notes LED Sleep mode auto switch OFF Yellow amp of the inverter Red Inverter initialization loading Yellow of setting and wait for grid Red check The inverter is connected and feeds power into the grid Green Yellow Q Red Green Anomaly in the insulation Yellow system of the photovoltaic Red generator Green We have Yellow Anomaly warning W warning Red codes Error error E warning codes Green Yellow Red Internally ventilation anomaly Green Yello Red Disconnection from the grid Table 7 LED Behavior PN The inverter is in sleep mode input voltage 7096 less than the start up voltage set for both inputs Green LED flashes for 0 25s once every 10s This is a transition state due to the checking of the operating conditions During this phase the input power is sufficient and the inverter checks the conditions necessary for connection to the grid for example value of the input voltage value of the insulation resistance etc Green LED flashes for 0 5s once every 1s The machine i
18. Power One Customer Service for more information at 1 877 261 1374 2 MAINTENANCE AND SERVICE The AURORA Inverter has no user serviceable parts Maintenance and service procedures must comply with the manufacturer s documentation For more detailed information please see Part 6 Maintenance Call Power One Customer Service at 877 261 1374 for a list of qualified service contractors 2 8 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 PN REV NA1 0 Page 12 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US 2 9 STORAGE OF THIS INFORMATION Keep this document in a safe place near the AURORA Inverter for easy access during installation and maintenance 2 10 ADDITIONAL INFORMATION PN REV NA1 0 Page 13 of 134 3 SAFETY The Technical Manual UNO 2 0 2 5 I OUTD X US 3 1 WARNINGS IN THIS DOCUMENT This is a list of special safety symbols used in this manual that highlights potential safety risks and or useful information These symbols are as follows N RI PN DANGER WARNING CAUTION ATTENTION NOTE INFORMATION 6 ve e Usage Indicates a hazardous situation that if not avoided can result in deadly electric shock hazards other serious physical injury and or fire hazards Indicates directions whic
19. UNO 2 0 I OUTD S US With DC Switch and 769x367x161mm Wiring Box UNO 2 5 I US ee 2 5 kW WEIGHT 42 51b 19 3kg witch and Wiring box MODELS DIMENTIONS 30 3 x 14 4 x 6 3 769 x UNO 2 5 I OUTD S US With DC Switch and 367x161 Wiring Box 2 4 NAMEPLATE The nameplate attached to the equipment must absolutely NOT be removed damaged stained hidden etc They 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 The nameplate shown below is affixed to the inverter and provides the following information 1 Manufacturer code 2 Model code 3 Serial number 4 Week Year of production PN REV NA1 0 Page 10 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US Power 1 IMMUN P N 3M08994S 100 SN 814903 WK 10 12 MEUM 00000000 Figure 1 0 Nameplate UNO 2 5 I OUTD S US Technical data reported in this manual however does not substitute the data mentioned on the labels affixed to the equipment a aga Sij AGW OT Ae eee Se DETE 3 i a Ub Ss a SOR 8 Ei A GA PN REV NA1 0 Page 11 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US SN
20. all the necessary connections The cover is equipped with fixed hinges and cannot be removed Once the connections have been made proceed to closing the cover by tightening the four screws on the front to the torque indicated in the technical data in Part 7 Appendix Remove the protective film located on the inverter front cover 04 and on the display 01 in Figure 3 1 9 2 SVERSION WALL MOUNTING 10 mm 0 39 Figure 3 2 Wall mounting for the S version of UNO 2 0 2 5 I OUTD S US PN Display LED Panel 3 Keypad ull dedi Cover ull nnd Box ulli ndi Cover DC Disconnect II 08 09 10 12 Pole an Installation on Wall 01 02 03 04 05 07 10 12 REV NA1 0 Page 39 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US Installing mounting bracket During installation do not lay the inverter face first on the ground as this may bend or mar the front cover e Refer to Figure 3 2 and note the location of the necessary mounting holes based on the mounting surface o Group holes are used for pole mounting o Group holes are used for wall mount e Position the bracket 09 Figure 3 2 in the desired mounting position ensuring it is level and mark the holes appropriate to the type of mounting surface as noted above e Drill the three holes installation on pole or five holes installation on wall required using a drill with a 10mm 0 39 bit The holes must be about 70mm 2
21. curves are linked to technical parameters that are continually being developed and improved and should therefore be considered approximate Power Derating Curves over Temperature range 25 to 60 C at 208V ac output UNO 2 0 I OUTD US 208Vac CEC efficiency curves UNO 2 0 I OUTD US 208 Vac grid voltage 98 96 94 92 eta_Vin 200V 90 eta_Vin 330V eta_Vin 416V Efficiency 88 86 84 0 10 20 30 40 90 60 10 80 90 100 Of Rated Output Power Efficiency curves UNO 2 0 I OUTD US 208 Vac grid voltage PN REV NA1 0 Page 128 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US UNO 2 0 I OUTD 240Vac CEC efficiency curves UNO 2 0 I OUTD US 240 Vac grid voltage Vin 200V Vin 340V Vin 416V Efficiency 0 10 20 30 40 50 60 70 80 90 100 Of Rated Output Power Efficiency curves UNO 2 0 I OUTD US 240 Vac grid voltage UNO 2 0 I OUTD US 277Vac CEC efficiency curves UNO 2 0 I OUTD US 277 Vac grid voltage PN REV NA1 0 Page 129 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US 98 96 94 92 eta_Vin 200V 90 eta_Vin 360V eta_Vin 416V 2 gt o 9 E 88 86 84 0 10 20 30 40 90 60 10 80 90 100 Of Rated Output Power Efficiency curves UNO 2 0 I OUTD US 277 Vac grid voltage UNO 2 5 I OUTD US CEC efficiency curves UNO 2 5 I OUTD US 208 Vac grid voltage PN REV NA1 0 Page 130 of 134 58 gt
22. either Positive or Negative Grounded Arrays Meets UL 1741 1547 requirements Varistor 2 L L L G Meets UL 1741 1EE1547 requirements Varistor 2 L L Li G 96 3 96 3 95 5 95 5 95 5 95 5 96 96 8 8 lt 0 6W 0 6W 5 5 x 1 25 Graphic Display AURORA UNIVERSAL opt AURORA UNIVERSAL opt PVI USB RS485 232 opt PVI DESKTOP opt PVI USB RS485 232 opt PVI DESKTOP opt PVI DESKTOP opt with PVI RADIOMODULE opt opt with PVI RADIOMODULE opt 5 5 x 1 25 Graphic Display 25 to 460 13 to 140 25 to 60 13 to 140 40 to 80 40 to 176 40 to 80 40 to 176 0 100 condensing 0 100 condensing lt 50 lt 50 6560 2000 6560 2000 NEMA 4X NEMA 4X Natural Convection 30 3 x 14 4 x 6 3 769 x 367 x 161 with switch 42 5 19 3 with switch Wall bracket Bottom 2 3 4 EKO 3 1 2 EKO Left and Right Side 1 3 4 EKO Back 4 3 4 EKO 16 A 600 VDC Natural Convection 30 3 x 14 4 x 6 3 769 x 367 x 161 with switch 42 5 19 3 with switch Wall bracket Bottom 2 3 4 EKO 3 1 2 EKO Left and Right Side 1 3 4 EKO Back 4 3 4 EKO 16 A 600 VDC High Frequency Transformer UL1741 2010 IEE1547 CSA C22 2 N 107 1 01 High Frequency Transformer UL1741 2010 IEE1547 CSA C22 2 N 107 1 01 FCC Part 15 Class B FCC Part 15 Class B CSA CSA 10 10 15 amp 20 15 amp 20 UNO 2 0 I OUTD US UNO 2 0 Il OUTD S US UNO 2 5 I OUTD U
23. electric current from a photovoltaic generator into alternating electric current and feeds it into the power distribution grid This AURORA Inverter is suitable for outdoor installation Distributor Grid company 3 8 FIELD OF USE GENERAL CONDITIONS Power One accepts no liability for damage of any kind that may arise from incorrect or careless operations PN REV NA1 0 Page 17 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US The equipment must not be used in ways that do not fall within the intended field of use The equipment MUST be used ONLY by experienced licensed contractors technicians to carry out operations on the equipment that are in accordance with what is described in this manual and in the attached documents 3 9 INTENDED OR ALLOWED USE This equipment is an inverter designed to transform a Direct Electric Current DC coming from a photovoltaic generator PV into an Alternating Electric Current AC connected to an AC grid 3 10 LIMITS OF THE FIELD OF USE The operating current dispersed during the normal operation MUST NOT exceed the limits documented in the technical specifications The inverter can only be used if all the technical characteristics are observed 3 11 IMPROPER OR PROHIBITED USE The following actions are prohibited when using this Aurora Inverter Installing the equipment in environments with particular flammability conditions or in adverse or constrained environmental conditions tempera
24. ground If the measured value is less than 1 megaohm the PV generator must be checked by a technician installer to identify and eliminate the problem If the measured value is greater than 1 megaohm and the error warning continues to be present contact the Power One Service Department This is an error inside the inverter that cannot be checked externally If REV NA1 0 Page 95 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US test fail carries out an the problem persists autotest that after switching the regards the inverter OFF and then leakage current ON again contact the sensor The test Power One Service is carried outby Department By its forcing a nature the alarm current of known appears only before value in the connection to the grid 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 Self Test E020 Booster relay Before This is an error inside Error 1 self test fail connecting to the the inverter that cannot grid the inverter be checked externally If carries out some the problem persists internal tests after switching the One of these inverter OFF and then tests regards the ON again contact the correct Power One Service operation ofthe Department By its booster relay nature the alarm The tes
25. inspection window present on each surge arresterl AC side If itis red the surge arrester is damaged and the cartirdge must be replaced If the alarm status continues to be REV NA1 0 Page 105 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US present even though all the surge arresters have a green inspection window contact the Power One Service Department Table 8 Error Codes 16 4 VERIFICATION OF GROUND LEAKAGE If the inverter has reported a ground fault there may be a ground leakage from the PV generator DC side To check this measure the voltage between the positive pole and ground and between the negative pole of the PV generator and ground using a voltmeter whose input accepts a voltage of at least 1000 Volts 16 5 BEHAVIOR OF A SYSTEM WITHOUT LEAKAGE Due to the capacitive effect of the PV generator during the first moments that the voltmeter is connected between one of the two poles and ground it will measure a voltage of about Voc 2 which will tend to stabilize to around OV if there is no ground leakage as shown in the graph below The internal resistance of the voltmeter tends to zero the voltage present on PV generator due to the capacitive effect Voc t4 pna Vs PN REV NA1 0 Page 106 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US How to make the measurement 16 6 BEHAVIOR OF A SYSTEM WITH LEAKAGE If the voltage measured betwee
26. make any sudden or fast movements that can create dangerous swinging 6 2 LIFTING Power One packages and protects individual components using suitable means to make its transport and subsequent handling easier Due to the weight and complexity of this equipment Power One recommends the process of loading unloading of this equipment be done by an experienced specialized staff knowledgeable in material handling Where indicated and or where there is a provision eyebolts or handles which can beused as anchorage points are inserted and or can be inserted Do not lift several units or parts of the equipment at the same time unless otherwise indicated 6 3 MODE OF LIFTING Two Lifting Points Standard Version S Version Figure 2 1 UNO 2 0 2 5 lifting points on the unit PN REV NA1 0 Page 29 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US 6 4 EQUIPMENT WEIGHT Mass weight in kg and Ib UNO 2 0 UNO 2 5 Standard version 17 kg 37 4 lb UNO 2 0 UNO 2 5 S version 19 3 kg 42 5 Ib WARNING This unitis heavy and may require two people to lift Please use proper lifting techniques 9 p When warehousing boxed inverters similar products can gt ied stacked to a maximum height of six pieces of equipment DO NOT stack boxed products with any other equipment or products 7 SELECT INSTALLATION LOCATION 7 1 NOTES ON DIMENSIONING OF THE SYSTEM Decisions about how to structure a phot
27. notices on the AURORA Inverter for notification and protection are located on both sides of the equipment and in the inside of the box The notices must be cleaned regularly and kept visible at all times This means they must NOT be hidden with objects and extraneous parts rags boxes equipment etc The technical data shown in this manual does not in any case replace those shown on the plates attached to the equipment PN REV NA1 0 Page 21 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US System Architecture Graphical representation of references Cor Display i0 Inverter Cover Block DC Conduit ee DC Input Screw Terminal Block pment Figure 1 2 Standard Version Graphical Representation PN REV NA1 0 Page 22 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US cd F 2 2 l x Lv 2 a 0 AX mi 12 19 20 Cor Display 10 Inverter 17 Cover 05 omen m e o o Front Cover Valve REAL ANLE RR Switch 08 HeatSink fF 09 Bracket Figure 1 3 S Version Graphical Representation PN REV NA1 0 Page 23 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US 4 FUNCTIONALITY AND COMPONENTS OF THE EQUIPMENT 4 1 DATA TRANSMISSION AND CONTROL The inverter or a network of several inverters can be monitored remotely through an advanced communications system based on an RS 485 serial interface
28. of a special wiring connector located inside the inverter 4 6 STAND BY MODE This functionality allows the inverter to remain ON and grid connected even with an input voltage of less than 0 7 x Vstart It is particularly useful in conditions of low irradiation and with passing Shadowed areas that would cause continuous connections and disconnections to the grid The time in which the inverter remains in this state can be set by accessing the Settings menu and activating the time for Input Undervoltage Protection TprotUV If within the set time the conditions to export power to the grid do not re occur i e Vin gt 80VDC the inverter disconnects from the grid after five minutes and goes into SLEEP Mode See Part 4 Operations for more information PN REV NA1 0 Page 24 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US 4 7 SLEEP MODE This functionality turns OFF the inverter completely and the power absorption is reduced to a minimum 0 6W In this mode the inverter allows display of the information available even in the absence of input voltage and therefore in the absence of sufficient irradiation of the photovoltaic panels In fact the display can be awakened by pressing any button on the display with the exception of the ESC button After 30 seconds of inactivity the display will once again switch OFF automatically 4 8 PROTECTIVE DEVICES WITHIN THE AURORA INVERTER 4 9 ANTI ISLANDING In accordance with required national sta
29. panels require a POSitive ground reference and therefore the POSitive side of an array utilizing this type of panel must be referenced to ground This is achieved by moving the grounding cable a02 in Figure 3 5 from the default position terminal a03 to terminal a04 In order to achieve this itis possible to vary the default configuration PN REV NA1 0 Page 46 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US The configuration of the grounding of the inputs must be done before any connections or testing takes place Incorrect configuration may cause damage to the system and photovoltaic panels After undergoing preliminary checks and having verified that there are no problems in the photovoltaic system you can connect the inverter to the inputs To prevent electrical hazards all the connections must be carried out with the DC disconnect switch 07 in Figure 3 2 or Figure 3 3 or the external disconnect switch open and locked For Safety reasons only a qualified electrician who has received training and or has demonstrated skills and knowledge in construction and in operation of this unit can install this inverter The installation is done by qualified installers and or licensed electricians according to the applicable local code regulations National Electric Code Canadian Electric Code and other gt 10 10 1 1 Standard Version Negative Grounding default configuration Inverter ground connection Connec
30. power point Each scan takes two seconds 15 7 INFORMATION MENU e Part No Allows users to display the product identification code Serial No Allows users to display the serial number of the equipment e Firmware Allows users to display the revision of the firmware installed in the equipment e Country selector Allows users to display information regarding the grid standard set with the rotary selectors Current value Displays the set grid standard New value If the position of the rotary switches is changed a new grid standard is therefore selected during operation the new standard selected will be displayed but will be made effective only after the equipment has been switched OFF and then ON again and only if the time remaining for carrying out this operation has not expired 24h of operation Set new Allows users to confirm set the new grid standard set in the New value section of the previous menu When this function is used there will be no correspondence between the standard selected on the display and the position of the rotary selectors Time remaining Displays the time remaining in which it is still possible to set a new grid standard When the time expires Locked will be displayed which indicates it is not possible to change the grid standard again PN REV NA1 0 Page 90 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US PART 5 TROUBLESHOOTING PN REV NA1 0 Page 91 of 134 The Technical
31. various descriptions given in Section 5 below The programming buttons all have specific functions when toggled independently but can also be used in various combinations as shortcuts that allow the user to perform alternative actions different from the functionality associated with a single button see the various descriptions given in the manual 13 MONITORING AND DATA TRANSMISSION As arule the inverter operates automatically and does not require special checks When there is not enough solar radiation to supply power for export to the grid e g during the night it disconnects automatically In this mode data consultation on the display 01 in Figure 1 2 and 1 3 is possible holding down any one key of the keypad 03 in Figure 1 2 and 1 3 the display is activated The operating cycle is automatically restored when there is sufficient solar radiation At this point the luminous LEDs on the LED panel 02 in Figure 1 2 and 1 3 will indicate this state These references can be found in Figure 1 2 and 1 3 in System Architecture or see below for display screen shot 13 1 USER INTERFACE MODE The inverter is able to provide information about its operation through the following instruments e Warning lights luminous LEDs e LCD display for displaying operating data eData transmission on dedicated RS 485 serial line The data can be collected by a PC using the signal converter PVI USB RS485_232 or a data logger equipped with an RS 485 po
32. A 2 000 h 17 3 SPECIAL MAINTENANCE Special maintenance operations can be carried out only by the installer or qualified staff Table 2 Special Maintenance Carry out tests every six months or in the case of anomalies particu larly after violent weather events input varistors a01 and output vari stors a06 installed on the main board 11 Before restarting the inverter the cause of the failure must be resolved Carry out tests every six months or in the case of malfunction the fa stening of all the connections in particular the EMT Fitting the terminal block and the screws of the inverter front cover 04 and of the wiring box front cover 06 Every six months or in the event of malfunctioning check the inverter cooling fans Before connecting to the grid the inverter carries out a test on the internal fans and in the event of an anomaly generates an alarm signal Once a year or in the event of malfunctioning check the backup battery and replace it if necessary The battery normally lasts 10 years but many conditions can reduce efficiency The battery is found in the slot a20 of the main board 11 1 000 h 1 000 h 1 000 h 2 000 h Table 10 Routine Maintenance PN REV NA1 0 Page 111 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US 17 4 MEASURING THE INSULATION RESISTANCE RISO RISO is affected by environmental conditions e g PV modules wet or damp therefore the measurement must be made immedia
33. AND TRIP TIMES VOLTAGE AND FREQUENCY LIMITS FOR UTILITY INTERACTION cnra endet di redes etate decide acu eaters 119 PN REV NA1 0 Page 5 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US 18 4 UTILITY INTERCONNECTION AND VOLTAGE AND FREQUENCY TRIP LIMITS AND TRIP TIMES VOLTAGE AND FREQUENCY LIMITS FOR UTILITY INTERACTION De beber etie P 124 PARED eea ea a e a e 120 UTILITY INTERACTIVE INVERTER MODELS UNO 2 0 I OUTD US UNO 2 0 I OUTD S US sernnnns 120 TO TOROI E chant a UU ect cb ga SEN A 125 18 7 TOPOGRAPHIC DIAGRAM OE THE EQUIPMENT iiti dir i bd HER Ee ctr tti e Ho ch o ED 125 1 9 mhi LM MU ED Lu I D E 127 BY ZNIDESCBIPTION OEST M Me a 132 18 10 CONNECTION OF SEVERAL INVERTERS TOGETHER vccssssesssescssecssssesssessseecsesosesueesseessesosesueesseessesssesueesseersesouesueesseerseensesaeres 132 18 11 NOTESON THESIZINCOPTHESYSTEM date basada acaban Nac aret E dc DU EE TELA o ERE 133 18 12 POWER LULA RAD DLL DELE 133 18 13 POWER REDUCTION DUE TO ENVIRONMENTAL CONDITIONS cesscscsssssesseessssssessuesseesstessessuesstesseesuessucsssesaeessessaesnsesaeesaeenes 133 18 14 POWER REDUCTION DUE TO THE INPUT VOLTAGE cscsssssessssesssecssssessuecsssecsesoeesueesssecsesssesuersseessesnsesueesseersesueesneesseeesesoceraneess 133 18 15 CHARACTERISTICS OF A PHOTOVOLTAIC GENERATOR ovesssssessstsssescsessuesseesstessessuesstesstesuessuesst
34. ARNING Install the AURORA Inverter in accordance with the electrical standards prescribed by the applicable National Electric Code and or by other local codes and regulations To reduce the risk of fire connect only to a circuit provided with 15A maximum branch circuit overcurrent protection for UNO 2 0 or UNO 2 5 WARNING in accordance with the National Electrical Code On the AC output side an automatic magnetothermic switch should be inserted between the Aurora Inverter and the distribution grid The Aurora Inverter should be connected to a dedicated branch circuit 3 13 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 It is essential to provide operators with correct information They must comply with the technical information given in the manual and in the attached documentation The instructions given in the manual does 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 The manufacturer is willing to train contractors at its premises or on site in accordance with conditions to be set out in the contract Do not use the equipme
35. ATE Power UNO 2 5 1 0UTD US TTA P N 3M08994 100 SN 814903 WK 10 12 00000000 01 Figure 3 0 Nameplate UNO 2 5 I OUTD S US 9 WALL MOUNTING 9 1 STANDARD VERSION WALL MOUNTING 01 Display 02 LED Panel Cover 98 Heatsink 09 Bracket Entry Terminal Block __ Figure 3 1 Wall mounting for the standard version of UNO 2 0 2 5 I OUTD US During installation do not place the inverter 10 in Figure 3 1 below with the front cover facing towards the ground e Position the bracket 09 in Figure 3 1 perfectly level on the wall and use it as a drilling template PN REV NA1 0 Page 38 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US e Drill the three holes required using a drill with 10mm 0 39 bit The holes must be about 70mm 2 75 deep On bracket 09 in Figure 3 1 there are five fastening holes but only three are used depending on the type of installation on a pole holes A on a wall holes B e Fix the bracket to the wall with the three wall anchors 10mm 0 39 in diameter supplied Hook inverter to the bracket by inserting the head of the rear screws in slots as shown in the figure e Proceed to anchor the inverter to the bracket by tightening the locking screw 12 in Figure 3 1 located on the lower side Unscrew the four screws and open the inverter front cover 04 in Figure 3 1 upwards in order to make
36. EMENTS OF THE PHOTOVOLTAIC GENERATOR If the photovoltaic generator is made up of two or more strings each string must be identical PV panel type and string length and must have the same installation conditions i e oriented toward the sun at the same azimuth All input parameters that must be met for the correct operation of the inverter are shown in the specifications PN REV NA1 0 Page 41 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US 10 5 ELECTRICAL WIRING AND CONNECTIONS 10 6 INVERTER COMPONENTS For both of the inverter models in Figure 3 1 and 3 2 above 2 kW or 2 5 kW two different set ups are available UNO X X I OUTD US Standard version in Figure 3 1 UNO X X I OUTD S US S Version equipped with DC disconnect switch 07 in Figure 3 2 Standard Version S Version Description 07 DC Disconnect Switch 18 DC Knockout Plug Earth ground Terminal 11 19 AC Knockout Plug Earth ground Terminal 13 Ground Fault Fuse 20 Signals Knockout Plug Protective Earth Terminal 14 21 16 22 17 3 po 9093 Ground cable AC Output Terminal Blocks AC Output Screw Terminal a03 Connector for negative Block grounding of the inputs Signal Wiring Duct 2 DC Input Screw Terminal a04 Connector for positive Block grounding of the inputs Figure 3 3 Electrical System Components 07 18 11 7 13 20 DC Input Terminal Blocks Ii Condensation Relief Valve REN m en 10 7 HOW TO USE TERMINAL BLOCK IN S VERSIO
37. H language of the display menu can be set by simultaneously pressing the ESC and ENTER buttons for at least three seconds If it is necessary to change the standard of the country after the settings have been fixed after 24 hours of operation please contact Power One s Technical Support department with the part number and serial number of the inverter PN REV NA1 0 Page 64 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US PART 4 OPERATIONS GUIDE PN REV NA1 0 Page 65 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US 11 GENERAL CONDITIONS Before checking the operation of the equipment it is necessary to have a thorough knowledge of the INSTRUMENTS chapter and functions that have been enabled in the installation Vd The equipment operates automatically without the aid of an operator operating state is controlled through the instruments The interpretation or variation of some data ts reserved exclusively for specialized and qualified staff The incoming voltage must not exceed the maximum values shown in the technical data in order to prevent damage to the equipment Consult Part 7 Appendix Technical Data for further details During operation check that the environmental and logistic conditions are correct see Part 3 Wiring Make sure that the said conditions have not changed over time and that the equipment is not exposed to adverse weather conditions and has not been contaminated with foreig
38. Internal error that cannot be checked externally If the problem persists even after switching the inverter OFF and then ON again contact the Power One Service Department This is an error inside the inverter that cannot be checked externally If the problem is persistent even after switching the inverter OFF and then ON again Contact the Power One Service Department REV NA1 0 Page 99 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US two different circuits Error Meas E028 F Grid Error in the This is an error inside F Measures internal the inverter that cannot Fault measurement of be checked externally If the grid voltage the problem is imposed by persistent even after regulations to switching the inverter have a OFF and then ON again measurement Contact the Power One redundancy 2 Service Department measurements on the same parameter carried out by two different circuits Error Meas E029 Z Grid Error in the This is an error inside Z Measures internal the inverter that cannot Fault measurement of be checked externally If the grid voltage the problem is imposed by persistent even after regulations to switching the inverter have a OFF and then ON again measurement Contact the Power One redundancy 2 Service Department measurements on the same parameter carried out by two different circuits Error Meas E030 ILeak Error in the This is an error inside lleak Measures interna
39. MT Fitting 2 is equivalent to PG 16 The Earth ground connection terminal is positioned inside the inverter as in the following illustration Standard Version S Version 24 Earth ground 25 Earth ground Terminals Terminal Figure 3 5 Earth Ground connection terminal position UNO 2 0 2 5 I S OUTD US 10 9 CONFIGURATION SETTINGS 10 10 GROUNDING CONFIGURATION OF THE DC INPUTS PN REV NA1 0 Page 45 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US a02 a03 204 Ground Cable grounding of the inputs erounding of the inputs Figure 3 6 Grounding Configuration of the DC Inputs The grounding of the inputs is negative configuration by default this means that the grounding cable a02 in Figure 3 5 is connected in position for negative grounding of the inputs a03 The version of the Aurora Uno inverter described by this manual requires one side of the connected PV array to be referenced to ground The ground reference connection is done internal to the inverter via jumper wiring bn The PV array wiring must never be referenced to a ground point external to the inverter as this will defeat the GFD control The Uno is provisioned with capability to connect arrays requiring either the POSitive or NEGative reference to ground The default setting of the inverter is a NEGative ground reference and the grounding cable a02 in Figure 3 5 is connected to the terminal block in position a03 Some photovoltaic
40. Manual UNO 2 0 2 5 I OUTD X US 10 8 1 1 Protective Earth Connection PE Both Standard and S versions of m the inverter include a Protective ah Earth terminal 26 for the external protective conductor identified by the specified symbol In order to plug the input cables into the inverter itis necessary to replace the AC knockout plug 19 with an EMT FITTING 3 4 thread 14 NPSM This 15 a standard NEMA 34 box connector that matches the wiring method used EMT RMT etc NOTE EMT Fitting 3 4 is equivalent to PG 21 EMT Fitting is equivalent to PG 16 The PE connection terminal is positioned inside the inverter as in the following illustration Standard Version 5 Version AC Output Screw Terminal Block Protective Earth Terminal Figure 3 4 PE Connection terminal for UNO 2 0 2 5 I X OUTD US 10 8 1 2 Earth Ground Connection Both Standard and S versions of inverter include an Earth ground Terminal 24 25 Figure 3 3 for each wiring system DC input and AC output circuit identified by the specified symbol PN REV NA1 0 Page 44 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US In order to plug the input cables into the inverter it is necessary to replace the AC knockout plug 19 Figure 3 3 with an EMT FITTING 3 4 thread 14 NPSM This is a standard NEMA 34 box connector that matches the wiring method used EMT RMT etc NOTE EMT Fitting 3 4 is equivalent to PG 21 E
41. N In order to install the wires in the DC input terminal blocks 14 AC output terminal blocks 16 Earth ground terminal 25 Protective Earth terminal 26 PN REV NA1 0 Page 42 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US The S version of the inverter utilizes pressure type terminal blocks for connection of all conductors To connect wiring to these blocks use the following procedure The recommended wire size range for the affected terminal blocks is 12AWG to 6AWG UNO 2 0 2 5 I OUTD_US wire sizing minimum 90 C rated AWG AWG DC Input Wiring UNO 2 5 120 6 UNO 2 5 12 Main UNO 2 0 6 10 8 SYSTEM GROUNDING Strip 12 of insulation from the end of the conductor to be terminated Use a small 1 4 wide flat blade screwdriver to open the pressure contact e Insert the screwdriver in the rectangular tool slot e Lightly press the screwdriver toward the associated wire slot until the clamp opens hold the clamp open with the screwdriver e Insert the conductor into the associated round wire until seated Release pressure screwdriver and remove it from slot e Check security of wire into the connector by tugging on the wire WARNING prevent electrical hazards all the connections must be carried out with the disconnect switch downstream of the inverter grid side open and locked PN REV NA1 0 Page 43 of 134 The Technical
42. OUTD X US Model UNO 2 5 I OUTD US 240Vac Output Power Derating vs Ambient Temperature Thermal Derating Vout Nominal Vin 210Vdc Vin 350Vdc Vin 470Vdc Ambient Temperature C Model UNO 2 5 I OUTD US 277Vac Output Power Derating vs Ambient Temperature Thermal Derating Vout Nominal Vin 210Vdc Vin 350Vdc Vin 470Vdc Ambient Temperature C REV NA1 0 Page 119 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US Model UNO 2 5 I OUTD US Output Power Derating vs Input Voltage UNO 2 5 I OUTD US e e e Pout MAX 11096 eu Pout MAX 100 150 200 250 300 350 400 450 500 550 Vin Vdc Maximum Output Fault Current and Duration Output Fault Fault Current Fault Fault Voltage Current PK RMS A Current Current RMS A 1 cycle RMS A A Total 3 cycles Duration Models mSec UNO 2 5 I OUTD series 5 84 UNO 2 5 T OUTD series 20 27 7 63 li amp UNO 2 5 I OUTD US 20 0ms UNO 2 5 I OUTD series 7 21 NOTE 6 UTILITY INTERCONNECTION AND VOLTAGE AND FREQUENCY TRIP LIMITS AND TRIP TIMES VOLTAGE AND FREQUENCY LIMITS FOR UTILITY INTERACTION Simulated utility source Maximum time sec at 60 Voltage V Frequency Hz Hz before cessation of s PN REV NA1 0 Page 120 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US 0 50 Va lt V lt 0 88 Vnor 2 Default Adjustable Set Points Adj Set Points 0
43. Page 1 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US PN PUWET lIe VA Rene wable Energy Solutions The Technical Manual UNO 2 0 2 5 I OUTD X US PN REV NA1 0 Page 2 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US POWER ONE TRADEMARKS Copyright 2011 Power One Renewable Energy Solutions LLC All rights reserved No part of this document may be reproduced in any form or by any means without the prior written permission of Power One Renewable Energy Solutions LLC Power One Renewable Energy Solutions LLC makes no representations express or implied with respect to this document or any of the equipment and or software it may describe including without limitation any implied warranties of utility or merchantability for any particular purpose All such warranties are expressly disclaimed Power One Renewable Energy Solutions LLC its subsidiaries affiliates distributors and dealers shall not be liable for any indirect special incidental or consequential damages under any circumstances Power One Renewable Energy LLC reserves the right to make changes to this document without notice and shall not be responsible for any damages including indirect special incidental or consequential damages caused by reliance on the content presented including but not limited to any omissions typographical errors arithmetical errors or listing errors All trademarks logos trade names service marks and copyrighted ma
44. Press ENTER to save Press ENTER to confirm the change Press ESC or ENTER to exit the menu Disable F gt gt This functionality allows to enable disable the Absolute Over Frequency Protection feature Press ENTER F gt gt Protection Enable NOTE this is the default setting of this inverter To change Use the UP DOWN arrows on the display panel to change the value Once the correct value has been selected Press ENTER to save Press ENTER to confirm the change Press ESC or ENTER to exit the menu Disable F lt lt This functionality allows to enable disable the Absolute Under Frequency Protection feature Press ENTER F lt lt Protection PN REV NA1 0 Page 85 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US Enable NOTE this is the default setting of this inverter To change Use the UP DOWN arrows on the display panel to change the value Once the correct value has been selected Press ENTER to save Press ENTER to confirm the change Press ESC or ENTER to exit the menu Disable U gt This functionality allows enable disable the Intermediate Overvoltage Protection feature Press ENTER U gt Protection Enable NOTE this is the default setting of this inverter To change Use the UP DOWN arrows on the display panel to change the value Once the correct value has been selected Press ENTER to save Press ENTER to confirm the change Press ESC or ENTER to exit the menu Disable U lt This functionality allows u
45. S UNO 2 5 I OUTD S US Figure 7 0 UNO 2 0 2 5 I OUTD US Datasheet PN REV NA1 0 Page 116 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US PART A UTILITY INTERACTIVE INVERTER MODELS UNO 2 5 I OUTD US UNO 2 5 I OUTD 5 US DC DC AC Output Power Factor Rating 20 995 20 995 Operating Voltage Range AC See 244 304 V ac for 277 V ac configuration 244 304 V ac for 277 V ac configuration 211 264 V ac for 240 V ac configuration 211 264 V ac for 240 V ac configuration 183 228 V ac for 208 V ac configuration 183 228 V ac for 208 V ac configuration Operating Frequency Range HZ 59 3 60 5 Hz Default 59 3 60 5 Hz Default 57 0 59 7 Hz 60 5 63 0 Hz Field 57 0 59 7 Hz 60 5 63 0 Hz Field oo a Number Number of Phases Phases Nominal Output Voltage AC See a V ac 240 V ac a V ac 240 V ac Note 2 208 V ac 208 V ac Note 2 Normal Output Frequency Normal Output Frequency Frequency 60 60 Continuous Output Current 10 5 A 12A 12A 10 5 A 12A 12A Note 4 2750 W 2750 W AC 45 C ambient See Note 4 Maximum Output Fault Current and See Note 5 See Note 5 Duration Pensa imt eee RR oe Protection Utility Interconnection and Voltage See Note a See Note Times Synchronization in rush current Negligible Negligible Trip Limit and Trip Time Accuracy Voltage 2 Voltage 2 Frequency
46. Set Time U lt Indicates the protection trip time associated with the intermediate value of the Under Voltage set point Press ENTER Time Min U NOTE The default setting is 2 seconds To change Use the UP DOWN arrows on the display panel to change the value PN REV NA1 0 Page 83 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US Once the correct value has been selected Press ENTER to save Press ENTER to confirm the change Press ESC or ENTER to exit the menu Set Time F gt Indicates the protection trip time associated with the intermediate Under Frequency setpoint press ENTER Time Max F gt NOTE The default setting is 0 16 seconds To change Use the UP DOWN arrows on the display panel to change the value Once the correct value has been selected Press ENTER to save Press ENTER to confirm the change Press ESC or ENTER to exit the menu Set Time F lt Indicates the protection trip time associated with the intermediate Over Frequency Setpoint Press ENTER Time Min F lt NOTE The default setting is 0 16 seconds To change Use the UP DOWN arrows on the display panel to change the value Once the correct value has been selected Press ENTER to save Press ENTER to confirm the change Press ESC or ENTER to exit the menu Set Time Conn 1 Indicates the time the inverter takes to connect the grid for the first time not after grid fault Press ENTER Time Conn 1 NOTE The default setting is 30 secon
47. T be held responsible for disposal of displays cables batteries accumulators etc It is necessary that the user s dispose of such substances that are potentially harmful to the environment in accordance to the standards enforced in the country of installation PN REV NA1 0 Page 7 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US PART 1 INTRODUCTION amp SAFETY PN REV NA1 0 Page 8 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US 2 INTRODUCTION THE INSTALLER MUST READ THIS DOCUMENT IN ITS ENTIRETY BEFORE INSTALLING OR COMMISSIONING THIS EQUIPMENT THESE INSTRUCTIONS IMPORTANT SAFETY INSTRUCTIONS 2 1 PURPOSE 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 Photovoltaic 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 This manual is a guide that will enable installers to work safely and carry out the operations necessary for keeping the equipment in good working order 2 4 TARGET AUDIENCE The installation is to be done by a qualified installer and or licensed electrician or contractor who knows and understands the National Electric Code and according to the applicable local code regulation
48. Technical Manual UNO 2 0 2 5 I OUTD X US Press ENTER to confirm the change Press ESC or ENTER to exit the menu Set Uconn lt Press ENTER Min Uconn lt NOTE this is the default setting of this inverter is to be determined To change Use the UP DOWN arrows on the display panel to change the value Once the correct value has been selected Press ENTER to save Press ENTER to confirm the change Press ESC or ENTER to exit the menu Set F Conn gt This indicates the maximum and minimum grid frequency value for connection to the grid Press ENTER Conn NOTE This is the default setting of this inverter is to determined To change Use the UP DOWN arrows on the display panel to change the value Once the correct value has been selected Press ENTER to save Press ENTER to confirm the change Press ESC or ENTER to exit the menu Set F Conn lt Press ENTER F Conn lt NOTE this is the default setting of this inverter is to be determined To change Use the UP DOWN arrows on the display panel to change the value Once the correct value has been selected Press ENTER to save Press ENTER to confirm the change Press ESC or ENTER to exit the menu Set Time U gt gt This indicates the Protection Trip Time associated with the absolute value of the Over Voltage setpoint Press ENTER Time Max U gt gt NOTE The default setting is 0 16 seconds To change Use the UP DOWN arrows on the display pane
49. The range of optional Power One devices that can be connected to this communication line allows one to monitor the device locally or remotely via internet access In addition itis possible to monitor the inverter s via radio link by installing the optional PVI RADIOMODULE board within the inverter 4 2 RADIOMODULE The RADIOMODULE board is an accessory used to add a radio communication to the inverter It can be used in parallel to the RS 485 line for the transmission of data to the monitoring system 4 3 CONFIGURABLE RELAY The inverter has a configurable switching relay that can be used in various operating conditions set in the dedicated menu A typical application example is the closing of the contact when an alarm Occurs 4 4 POWER ON OFF REMOTE This command can be used to disconnect connect the inverter to the grid via an external remote command This functionality must be enabled using the relevant menu using the front panel programming keys If the inverter is operating connected to the grid within the correct parameter and with the external switch ON OFF control activated 4 5 INPUT POLES GROUNDING The inverter design provides grid isolation via high frequency transformer isolation and is capable of operating from either a positive or a negative referenced PV array or an ungrounded floating array The inverter must be set up appropriately for the operational mode chosen and this is done by changing the position
50. accessible to operators e Avoid installing the inverter in areas where rainwater may accumulate e For locations where the ambient temperature can exceed 50 C it is unnecessary to protect the inverter from direct sun rays in any case the ambient temperature should be within the range of working temperatures of the inverter indicated in Part 7 Appendix under technical characteristics PN REV NA1 0 Page 32 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US e For installations in closed environments sufficient ventilation of the enclosed space 15 required to prevent heat build up inside the enclosure and around the inverter Depending on the specific site this may be via natural convection or a forced air system Incase of installation in closed environments provide good ventilation through the use of specific systems as well e Avoid electromagnetic interference that can compromise the correct operation of electronic equipment with consequent situations of danger 7 5 OPERATING DIAGRAM v PV generator Inverter Distributor ZZ Grid company Figure 2 4 Operating diagram of UNO 2 0 2 5 I X OUTD 7 6 GENERAL INSTALLATION CONDITIONS Installation of the equipment is carried out based on the grid system and site in which the equipment is installed therefore its performance depends on the accuracy of the connections Staff authorized to carry out the installation must be specialized and experi
51. ach state of the inverter indicated through the steady or intermittent lighting of the relevant LED a message that identifies the operation it is carrying out or the detected fault anomaly is also shown on the display 01 section b10 see below GME Peceanhio frer Saxon i ic Inverter OK QE 510 r IL kW Mon 01 Feb 11 26 kwn E E y C503 lw mes A EF T 6 43 POWER ALARM GFI UP DOWN ENTER Description b10 Lines of text for the cyclical display of 13 Display inverter parameters error codes and the menu navigation Figure 5 1 Inverter display 16 3 MESSAGES AND ERROR CODES Message Display Alarm Cause Solution Message Display Codes Display Ground Red LED Ground Fault The alarm is If possible measure the Fault generated when installation resistance a ground leakage using a megohmmeter currentis positioned between the detected in the photovoltaic field DC section of the positive terminal short system The circuited to the negative alarm is pole and ground accompanied by If the measured value is the lighting up of less than 1megohm the the red LED on photovoltaic generator the front of the must be checked by a inverter technician installer to identify and eliminate the problem If measured value is greater than 1 megaohm PN REV NA1 0 Page 93 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US and the error warning continues to be present contact the Pow
52. allation site These parameters are programmed into the inverter using the rotary switches 51 S2 as show in a09 Figure 3 22 Setting the grid standard for the country of installation is a necessary operation before The inverter is configured using the rotary switches a09 Figure 3 25 Before turning the rotary switches make sure the inverter is switched OFF At the same time as the grid standard is set the language of the display menus is also set Code Rotary switches for setting the standard of the country and the language Figure 3 25 Connection using the rotary switches to set the country grid standard The default setting is 0 0 and means no grid standard is selected and the display language is English in this case the Set Country message will appear on the display If a position of switches not assigned on the display 01 is selected Invalid Selection appears 10 23 SAVING GRID STANDARD OF THE COUNTRY AND LANGUAGE DISPLAY The settings become fixed after 24 hours of operation of the inverter it does not need to be connected to the grid and only needs to be powered The time remaining before the settings become fixed can be seen in the dedicated menu and a notice appears if the time has expired Once the settings are fixed turning the rotary switches will produce no effect In this condition only the language can be changed through the dedicated menu At any time and for any reason the ENGLIS
53. andard Icon present grid voltage present and within the parameters set by the grid standard Figure 4 3 Types of data available on the display 14 1 COMMISSIONING PROCEDURE Turn the DC disconnect switch 07 in Figure 1 2 and 1 3 in the ON position If there are two separate external disconnect switches one for DC and the other for AC first close the AC disconnect switch and then the DC disconnect switch There is no order of priority for opening the disconnect switches Vin Vstart When the inverter has power the first checks performed are associated with the input voltage Ig4v Ej v e Ifthe DC input voltage is lower than the Vstart atda 00 voltage voltage required to begin the inverter s Vin Vstart grid connection the b14 in Figure 4 3 icon remains OFF and the Waiting for the sun message is displayed b10 in Figure 4 3 e Ifthe DC input voltage is higher than the Vstart voltage the b14 in Figure 4 3 icon is displayed and the inverter goes to the next stage of the controls In both cases the voltage levels and input current indicated in the display are b15 and b16 in Figure 4 3 fields The inverter performs a control of grid parameters OK The b22 icon which represents the grid distribution 230 l can have different statuses ali y e Not present indicates the mains voltage results as COG A absent e Flashing indicates the mains voltage is present but outside the para
54. as been selected Press ENTER to save Press ENTER to confirm the change Press ESC or ENTER to exit the menu Accept Boards This function can be used to force new boards link in case of board substitution converter part Press ENTER Use the UP DOWN arrows on the display panel to change the value Once the correct value has been selected Press ENTER to save Press ENTER to confirm the change Press ESC or ENTER to exit the menu e Cash This section of the menu allows users to set the name of the currency and the value given to 1 kWh of energy produced The correct setting of these parameters allows users to display the actual earning saving given by the system Name the chosen value is set default is US Val KWh indicates the cost incentive of 1 KWh expressed in the chosen currency default is 0 10 Time Allows users to set the current date and time daylight saving time not included Language Allows users to set the required menu language e Vstart This section of the menu allows users to set the Vstart voltage The activation voltage should only be adjusted if required by the array design The proper setting for a given array can be determined from the Power One string sizing tool available at www power one com Autotest After the Autotest procedure the following information is available Nominal threshold set in the inverter Value of the quantity found during autotest Nominal operation time set in the i
55. box connector that matches the wiring method used EMT RMT etc NOTE EMT Fitting 3 4 is equivalent to PG 21 EMT Fitting 2 is equivalent to PG 16 See Part 7 Appendix to determine the EMT tightening torque values to maintain the NEMA 4X environmental protection rating 10 11 S VERSION POSITIVE GROUNDING Inverter Ground Connection In the inverter box connect ground cable 302 from the default position 303 to the connector for positive grounding of the DC inputs a04 Ground Cable a03 Connector for negative grounding of the inputs PN REV NA1 0 Page 50 of 134 PN DC Switch Wiring Box Internal connections In the DC Switch Wiring Box connect the internal DC connection cables to the DC Input terminal block 14 as follows Position 4 Positive input poles Position 5 Negative input poles DC Switch Wiring Box PV String connection In the DC Switch Wiring Box connect the DC input cables from the PV string to the DC input terminal block 14 as follows Position 4 Positive input pole of the photovoltaic generator Position 5 Negative input pole of the photovoltaic generator The Technical Manual UNO 2 0 2 5 I OUTD X US a04 Connector for positive grounding of the inputs Figure 3 11 Inverter Grounding Connection DC Switch Figure 3 12 DC Switch Box Wiring Internal Connections Code Description DC Input Terminal Blocks Figure 3 13 DC Switch box wir
56. compared to fossil fuels e Partial This section of the menu allows users to display the partial statistics Time Partial operating time E par Partial energy produced PPeak Peak power value Val Partial production value calculated with the currency and conversion coefficient set in the relevant section of the SETTINGS menu CO2 Partial amount of CO2 saved To reset all the counters of this sub menu press the ENTER button for more than three seconds Today This section of the menu allows users to display the daily statistics E day Daily energy produced Ppeak Daily peak power value Val Daily production value calculated with the currency and conversion coefficient set in the relevant section of the SETTINGS menu CO2 Amount of CO2 saved daily Last 7 days This section of the menu allows users to display the statistics for the last seven days E 7d Energy produced over the last seven days PN REV NA1 0 Page 77 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US Val Value of production for the last seven days calculated with the currency and conversion coefficient set in the relevant section of the SETTINGS menu CO2 Amount of CO2 saved over the last seven days Last month This section of the menu allows users to display the statistics for the last month E mon Energy produced during the current month Val Value of production for the last month calculated with the currency and conversion coefficien
57. cording to the model of inverter the voltages and currents of one 1 or three phases 1 2 and 3 will be displayed The phase considered is shown on the right side of the voltage and current values Lrwerter ici MON 01 Fek At the end of the display cycle as described above the grid frequency will be indicated in field b20 Figure 4 3 and the line voltage will be indicated in field b19 Figure 4 3 At the same time the main readings made by the inverter will be displayed in rotation on the graphic display b10 Figure 4 3 PN REV NA1 0 Page 73 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US Display of the power graph b11 15 LED BEHAVIOR The histogram includes 16 horizontal units and 20 vertical units The period of time is represented by the horizontal axis of the graph and can be set by the user to 8 16 or 24 hours therefore each horizontal unit can represent 30 60 or 120 minutes The vertical axis represents the maximum power derating 2 2kW for the UNO 2 0 I OUTD and 2 75kW for the UNO 2 5 I OUTD and therefore 100 corresponds to this outgoing exported power value Finally bear in mind that the power value expressed by each column of the graph represents the average value of the power during the period relating to the horizontal unit The following table shows all the possible combinations of activation of the LEDs situated on the LED panel 02 in Figure 1 2 and 1 3 in relation
58. cuit voltage of any string is close to the maximum accepted inverter voltage check array design to ensure that voltage will not be outside max allowable range under low temperature conditions 10 3 CHECKING OF LEAKAGE TO GROUND OF THE PHOTOVOLTAIC GENERATOR This test must be done with the string array in an open circuit condition both leads floating Prior to connecting the array wiring to the inverter measure the voltage present between positive and negative pole of each string with respect to ground If a voltage is measured between an input pole and ground it may be that there is a low insulation resistance of the photovoltaic generator and the installer will have to carry out a check to solve the problem PN REV NA1 0 Page 40 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US Do not connect the strings if a leakage to ground has been found because this is an unsafe condition Make sure any leakage condition found is resolved before connecting array to the inverter On the AC output side an automatic magnetothermic switch should be inserted between the Aurora Inverter and the distribution grid To reduce the risk of fire connect only to a circuit provided with a 15A maximum branch circuit overcurrent protection for UNO 2 0 or UNO 2 5 in accordance with the National Electric Code ASI NFPA 70 The Standard Models of this inverter don t have an integrated DC switch it must be externally provided by the installer 10 4 REQUIR
59. ds To change Use the UP DOWN arrows on the display panel to change the value Once the correct value has been selected Press ENTER to save Press ENTER to confirm the change Press ESC or ENTER to exit the menu Set Time Conn 2 Indicates the time the inverter takes to connect to the grid after a grid fault Press ENTER Time Conn 2 NOTE The default setting is 300 seconds This is the default setting of this inverter To change PN REV NA1 0 Page 84 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US Use the UP DOWN arrows on the display panel to change the value Once the correct value has been selected Press ENTER to save Press ENTER to confirm the change Press ESC or ENTER to exit the menu Disable U gt gt This functionality allows user to enable disable the absolute Over Voltage Protection feature Press ENTER U gt gt Protection Enable NOTE this is the default setting of this inverter To change Use the UP DOWN arrows on the display panel to change the value Once the correct value has been selected Press ENTER to save Press ENTER to confirm the change Press ESC or ENTER to exit the menu Disable U lt lt This functionality allows to enable disable the Absolute Voltage Protection feature Press ENTER U lt lt Protection Enable NOTE this is the default setting of this inverter To change Use the UP DOWN arrows on the display panel to change the value Once the correct value has been selected
60. eate the daisy chain connection of the inverters a12 The same is true for connections made using the terminal connectors a14 in Figure 3 17 Connection of the conductors using the terminal connectors a14 T R T R RTN and LNK The LNK connection must be used for connecting the shielding boot s of the cable s Connection of the RS485 line on RJ45 Remote control RS485 Figure 3 17 Serial communication connection PN REV NA1 0 Page 56 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US Table 5 Crimping Scheme Connectors RJ45 Pin N Function 1 not used 2 not used TOP 3 T R NE 4 not used 5 T R 6 not used FRONT Emi 7 RTN 8 not used For long distance connections a shielded twisted pair of cable is recommended with characteristic impedance Z0 of 120 Ohm as shown in the following table Signal Symbol Pair Cable A Postivedta TR AT 2 Negative data TIR A 2 gt lt gt 4 DB Reference RTN B 1 2 Use a connector with metal body to provide cable shield continuity Shield continuity must be provided along the communication line using the LNK terminal and must be grounded at a single point 10 17 PROCEDURE FOR CONNECTION TO A MONITORING SYSTEM Connect all the units of the RS485 chain in accordance with the daisy chain arrangement IN OUT observing the correspondence between signals Activate the termination resistance of the communication
61. ed NOTE this is the default setting of this inverter To change Use the UP DOWN arrows on the display panel to change the value Once the correct value has been selected Press ENTER to save Press ENTER to confirm the change Press ESC or ENTER to exit the menu U Avg Derating This function enables disables the inverter s active power limitation so that it avoids the average grid voltage from overcoming the threshold value and causing the inverter disconnection from the grid Press ENTER U Avg Derating Enable NOTE this is the default setting of this inverter To change Use the UP DOWN arrows on the display panel to change the value Once the correct value has been selected Press ENTER to save Press ENTER to confirm the change Press ESC or ENTER to exit the menu OF Derating This function enables disables the power limitation feature due to high grid frequency Press ENTER OF Derating PN REV NA1 0 Page 87 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US Disabled NOTE this is the default setting of this inverter To change Use the UP DOWN arrows on the display panel to change the value Once the correct value has been selected Press ENTER to save Press ENTER to confirm the change Press ESC or ENTER to exit the menu Reset Country _S This function can be used to reset the country code Press ENTER To change Use the UP DOWN arrows on the display panel to change the value Once the correct value h
62. ed only with an input voltage range of 170 470 V dc for 208 V ac configuration 170 470 V dc for 240 V ac configuration 170 470 V dc for 277 V ac configuration Maximum output power can be delivered only with an input voltage range of 185 470 V dc for 208 V ac configuration 185 470 V dc for 240 V ac configuration 185 470 V dc for 277 V ac configuration REV NA1 0 Page 122 of 134 The Technical Manual PN x ony 2 O e 2 o 2 c 2 o O gt lt Max Countinuous Pout KW UNO 2 0 2 5 I OUTD X US Model UNO 2 0 I OUTD US 208Vac Output Power Derating vs Ambient Temperature Thermal Derating Vout Nominal Vin 210Vdc Vin 350Vdc Nin 470Vdc Ambient Temperature C Model UNO 2 0 I OUTD US 240Vac Output Power Derating vs Ambient Temperature Thermal Derating VoutzNominal Vin 210Vdc Vin 350Vdc Vin 470Vdc Ambient Temperature C REV NA1 0 Page 123 of 134 The Technical Manual PN x Pay 2 O A 2 O 5 c 2 O O gt lt UNO 2 0 2 5 I OUTD X US Model UNO 2 0 I OUTD US 277Vac Output Power Derating vs Ambient Temperature Thermal Derating VoutzNominal m Vin 210Vdc VNin 350Vdc Vin 470Vdc Ambient Temperature C Model UNO 2 0 I OUTD US Output Power Derating vs Input Voltage UNO 2 0 I OUTD US Pout vs Vin ee e e e Pout 110
63. ence of power derating input voltage out of range or power limitation impo the grid Reports a derating of power due to high internal temperature J680 50 b17 b10 b19 inverter Mon 1 11 26 E day kWh f E total kWh M A 235A J sc y te Description Input Current Indicates the DC DC input MPPT SCAN function activated Lines of text for the cyclical display of inverter parameters error codes and the menu navigation Graph of the power fed into the grid from 0 to 100 The time scale is settable to 8 16 24 hours Displays the total energy produced since installation of the inverter Circuit part Booster Indicates the circuit part for conversation from DC to AC Output voltage of the highlighted phase Displays the energy produced over a day Output current fro the highlighted Phase At the end of the display of the currents the grid frequency Hz is REV NA1 0 Page 70 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US displayed Instaneous power Indicates that the PV Connection to the grid generated for the grid generator voltage is Connected together higher than the VStart Not connected gapped of the inverter b15 Input voltage b22 Status of the mains voltage Icon not present No Grid voltage Flashing Icon Grid voltage present but outside the parameters set by the grid st
64. enced in this job they must also have received suitable training on equipment of this type The operation must be carried out by licensed contractor or electrician Comply with what is written in this manual follow the diagrams and attached documentation For safety reason only a qualified electrician who has received training and or has demonstrated skills and knowledge in construction and in operation of this unit can install this inverter The installation is done by qualified installers and or licensed electrician according to the applicable local code regulations WARNING National Electric Code NEC amp CEC other local wiring regulations The connection of an inverter energy system to the electricity distribution network shall be approved by the appropriate electrical distributor or authority having jurisdiction 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 PN REV NA1 0 Page 33 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US 7 ENVIRONMENTAL CHECKS e See Part 7 Appendix Technical Data to check the environmental parameters to be observed degree of protection temperature humidity altitude etc Do not expose to direct sunlight to avoid unwanted power derating due to an increase in the internal temperature of the inverter Do not install in small closed rooms where air cannot circ
65. er One Service Department Degauss Degaussing Degauss error State Fail error Input OC E001 Input OV E002 NO E003 Parameters PN Input Overcurrent Input Overvoltage Internal Parameters Error The alarm appears when the inverter input current exceeds the set overcurrent threshold This alarm is indicated when the inverter input voltage exceeds the operating threshold The alarm is triggered before reaching the absolute threshold beyond which the inverter will be damaged When the inverter input voltage exceeds the Over Voltage threshold the inverter will not start because of the generation of the alarm The main microcontroller is unable to correctly initialize the two DSPs booster You must check whether the composition of the PV generator allows an input current that exceeds the maximum threshold allowed by the inverter and that the configuration of the independent or parallel inputs is carried out correctly Measure the input voltage in the inverter with a voltmeter If it is higher than the maximum voltage of the operating interval the alarm is real and you must check the configuration of the PV generator If it is lower than the maximum voltage of the operating interval the alarm is caused by an internal malfunctioning and you must contact Power One Services This is an error inside the inverter that cannot be checked externally If the prob
66. er from the PV string as long as it is less than the derated power 18 11 POWER REDUCTION DUE TO THE INPUT VOLTAGE The graphs show the automatic reduction of supplied power when input voltage values are too high or too low 18 12 CHARACTERISTICS OF A PHOTOVOLTAIC GENERATOR A photovoltaic generator consists of an assembly of photovoltaic modules that transform solar radiation into DC electrical energy and can be made up of Strings X number of PV modules connected in series Array group of X strings connected in parallel 18 13 STRINGS AND ARRAYS In order to considerably reduce the cost of installing a photovoltaic system mainly associated with the problem of wiring on the DC side of the inverter and subsequent distribution on the AC side the string technology has been developed A photovoltaic panel consists of many photovoltaic cells mounted on the same support A string consists of a certain number of panels connected in series e An array consists of two or more strings connected in parallel Large photovoltaic systems can be made up of several arrays connected to one or more inverters By maximizing the number of panels inserted in each string it is possible to reduce the cost and complexity of the connection system of the photovoltaic system PN REV NA1 0 Page 134 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US CELL ZEN m aa ma The current of each array must fall within the limits of the inver
67. esseesuessuesneesatesaeesuesatesaeesseenes 133 18 16 133 PN REV NA1 0 Page 6 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US 1 FOREWORD 1 1 Conditions of warranty and supply Warranty conditions are described in a certificate supplied with the equipment The warranty conditions are understood to be valid if the Client observes what is described in this manual Any conditions deviating from those described below must be explicitly agreed upon in the purchase order 1 2 Exclusions It is absolutely prohibited to make modifications to the equipment The Customer is entirely responsible for any modifications made to the system Power One declines any responsibility in case standards for correct installation are not adhered to and it is not liable for systems upstream or downstream of the equipment it has supplied Check for adequate spaces adapted to accept the unit air noise produced as a function of the environment any conditions of flammability as installations can vary Power One CANNOT be held responsible for lack of production even if it results from break downs of the unit or the data communication system Power One CANNOT be held responsible for defects or malfunctions as a result of improper use of the tool alterations due to transportation or special environmental conditions lack of or improper maintenance tampering poor installation repairs or use Power One CANNO
68. g OFF the associated disconnect switch and waiting for the UV port time out c Disconnect the grid by turning OFF its associated disconnect switch and reduce DC input to less than 130 Vdc 17 9 POWER DOWN PROCEDURES Once the inverter is wired and connected to the grid use the following procedures to disconnect for maintenance Before performing any operation switcbox power input ALWAYS perform the appropriate disconnection procedure outlined below WARNING PN REV NA1 0 Page 113 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US 17 10 CR2032 LITHIUM BATTERY REPLACEMENT e Before performing any operation on the switchbox power input or on the inverter ALWAYS perform the disconnection procedure as explained in Part 4 Operations of this manual A WARNING e The replacement of this battery should be performed only by trained personnel Inside the AURORA Inverter there is a CR2032 lithium battery When this battery is at end of life a message will be shown in the display informing that the battery needs to be replaced The battery is visible after removing the AURORA PV Inverter s front panel Refer Figure 3 2 above for the procedure to remove the front panel To insert the new battery into its holder slide the battery at a 30 angle pushing it into insertion as shown in Figure 6 0a below When pushed on into insertion it should seat into the correct position within the holder S d I Telcel CI
69. ge the limit as regards the minimum input voltage of the inverter This error warning appears when during normal operation of the inverter the grid parameters fall outside the limits set by the grid company No grid voltage after the warning the inverter goes on No Vac Unstable grid voltage downwards and upwards Unstable grid frequency Reading of the internal voltage on the bulk capacititors carried out when the interverter is exceeds the Vstart contact the Power One Service Department Check the grid voltage on the inverter If absent check for the absence of grid voltage on the supply If the voltage on the supply If the voltage tends to rise when the inverter is connected it means there are high line or grid impedance Check the grid voltage on the supply as well if itis high it means there is a high grid impedance In this case ask the grid companyto adjust the grid voltage If the grid company authorizes a change to the inverter parameters arrange the new limits with the Power One Service If the voltage at the supply point is much lower than that measured on the inverter the line must be adjusted inverter counter If the grid voltage and frequency fall within the limits even when the inverter is connected to the grid contact the Power One Service Department Check the inverter input voltage If it does not exceed the Vstart check that there is
70. h must be fully understood and followed in its entirety in order to avoid potential safety hazards including equipment damage or personal injury Indicates a hazardous situation which if not avoided could result in minor or moderate injury This points out that the examined area must not be entered or that the described operation must not be carried out The reader should stop use caution and fully understand the operations explained before proceeding Contains actions and instructions that must be followed in order to avoid potential damage to the equipment and or faults Accompanies notes that call attention to supplementary information that ensure optimal operation of the system Indicates that the customer must make sure the operator has the necessary skill and training to do his her job Technician in charge of using and maintaining the equipment must be licensed and qualified for the described tasks and must have the experience to correctly interpret what is described in the manual Do NOT install this equipment while under the influence of drugs narcotics or with health related issues that might impact mental or physical ability to operate at sound mind The employment of a person who is NOT qualified is drunk or on narcotics has a prosthetic mitral valve or a pacemaker is strictly forbidden When operating this equipment always use Personal Protective Equipment PPE recommended by the law and supplied by the emplo
71. he inverter contact the supplier or authorized distributor for a repair return determination and instructions regarding the return repair process Table 2 Package contents QTY Description Aurora Inverter Installation and Operator s Manual Certificate of Warranty CD ROM with Communication Software cCSAus Declaration of Conformity 5 3 LIST OF COMPONENTS SUPPLIED The components supplied are inserted into a cardboard box placed within the packaging of the UNO 2 0 2 5 Table 1 Components Supplied with the Equipment Components available for all models Quantity Connector for connecting the configurable relay 2 PN REV NA1 0 Page 27 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US Connector for the connection of the communication and control signals Bracket for wall mounting Standard version 1 Bracket for wall mounting S version 1 Bolts and screws for wall mounting 5 Locking screws and washers for fastening of the inverter to the bracket User manual and CD ROM 1 6 LIFT AND TRANSPORT Some specifications are not applicable to small equipment or components 6 1 TRANSPORT AND HANDLING PN REV NA1 0 Page 28 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US Transport 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
72. he menu using the buttons of the LED panel 02 in Figure 1 2 and 1 3 Section b10 in Figure 4 3_consists of two lines with 16 characters per line and can be used to display the operating state of the inverter and the statistical data e display the service messages for the operator e display the alarm and fault messages for the operator changing the settings of the inverter 15 4 USING THE PANEL BUTTONS The UP and DOWN buttons of the LED panel 02 in Figure 1 2 and 1 3 are used to move around a menu or to increase decrease the settable values e The ESC button allows access to the three main sub menus STATISTICS SETTINGS and INFORMATION This enables the user to return to the previous sub menu while moving through the menus e The ENTER button allows access to the required sub menu while moving though the menus and allows the main menu scroll mode to be changed icons b23 in Figure 4 3 are activated CYCLIC Cyclic display of the main parameters of the inverter u LOCKED Display locked on the screen you want to monitor continuously 15 5 STATISTICS MENU Selecting STATISTICS from the three main sub menus gives access to e Total This section of the menu allows users to display the total statistics Time Total operating time E tot Total energy produced Val Total production value calculated with the currency and conversion coefficient set in the relevant section of the SETTINGS menu CO2 Amount of CO2 saved
73. hes disconnects or protective devices e g fusing circuit breakers depending upon the prevailing safety rules e AC output neutral is not bonded to ground e The standard models of this inverter don t have an integrated DC switch it must be externally provided by the installer REV NA1 0 Page 16 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US e Toreduce the risk of fire connect only to a circuit provided with 15A maximum branch circuit overcurrent protection for UNO 2 0 and UNO 2 5 in accordance with the National Electrical Code e Onthe ACoutput side an automatic magnetothermic switch should be inserted bertween the Aurora Inverter and the distribution grid e The Aurora Inverter should be connected to a dedicated branch circuit 3 6 OPERATION WARNINGS e Anytime the inverter has been disconnected from the power network use extreme caution as some components can retain charge sufficient to create a shock hazard to minimize occurrence of such conditions comply with all corresponding safety symbols and markings present unit and in this manual WARNING e Ensure all covers and doors are closed and secure during operation All operations regarding transport installation and start up including maintenance must be done by qualified trained personnel and in compliance with all prevailing codes and regulations 3 7 APPROPRIATE USAGE The AURORA Inverter is a multi string inverter that converts direct
74. highlighted phase At the end of the display of the currents the gnd frequency Hz is displayed b21 Connection to the grid e inverter not connected P Inverter connected b19 Output voltage of the highlighted phase b22 Status of the mains voltage Icon not present no gnd voltage 230 vl 2 Flashing icon gnd voltage present but outside the 1 parameters set by the gnd standard Icon present grid voltage present and within the 3 15 parameters set by the grid standard b17 Indicates the DC DC input circuit part Booster b16 Input current DC b15 Input voltage DC b14 Indicates that the PV generator voltage is higher than the Vstart of the inverter Figure 4 1 Description of symbols and display fields PN REV NA1 0 Page 67 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US 12 2 DESCRIPTION OF THE KEYPAD Through the combination of LED panel 02 buttons under the display 01 in Figures 1 2 and 1 3 above values can be set or data can be displayed by scrolling up or down Some LEDs are also shown on the keypad 03 in Figure 1 2 and 1 3 for status conditions These references can be found in Figure1 2 and Figure 1 3 in System Architecture or see below for display screen shot oa CEL sa nathe ENTER irc Ib TES i 26 E 3580 434v 99 30 2503 Ls 2 gt Cyclic 43 mMm rma m POWER ALARM GFI ESC UP DOWN ENTER T
75. his allows you to confirm the operation or to enter the set data item This allows you to read the data on the display by scrolling down wards or to decrease the set value to correct it during data entry This allows you to read the data on the display by scrolling upwards or to increase the set value to correct it during data entry This allows you to exit a mode The GFT ground fault LED indicates that the inverter has detected a ground fault on the DC side of the photovoltaic generator When this fault is detected the inverter immediately disconnects from the grid and the relevant error waming appears on the LCD display Indicates that the inverter has detected an anomaly The type of problem is shown on the display Indicates that the inverter is working correctly This LED flashes while the grid is being checked when the unit is commissioned If a valid grid voltage is measured the LED stays on continuously provided there is sufficient sunlight to activate the unit If not the LED continues to flash until there is sufficient sunlight for activation During this phase the LCD display shows the Waiting for sun message Figure 4 2 Description of the Keypad PN REV NA1 0 Page 68 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US The LEDs in the display indicate certain conditions by themselves Using combinations of the LEDs they can indicate conditions that are different from the original single one see the
76. ing PV String Connections In order to plug the input cables into the inverter it is necessary to replace the DC equivalent to PG 16 Knockout Plug 18 with an EMT FITTING 3 4 thread 14 NPSM This isa standard NEMA 34 box connector that matches the wiring method used EMT RMT etc NOTE EMT Fitting 3 4 is equivalent to PG 21 EMT Fitting 2 is See Part 7 Appendix to determine the EMT tightening torque values to maintain the NEMA 4X environmental protection rating REV NA1 0 Page 51 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US 10 12 GRID OUTPUT CONNECTION AC SIDE For safety reasons only a qualified electrician who has received training and or has demonstrated skills and knowledge in construction and in operation of this unit can install this inverter The installation is done by qualified installers and or licensed electrician according to the applicable local code regulations National Electric Code NEC and CEC or other local code wiring regulations The connection of an inverter energy system to an electrical installation connected to the electricity distribution network shall be approved by the appropriate electrical distributor Below are the utility voltage configurations on which the inverter should be connected L1 L1 L1 L3 L2 L2 L3 240V 277V SPLIT PHASE 3PH Y wes 2 3 1 2 3 r 2 L1 L2 L1 12 N N LI WIRE Table 4 Utility Voltage Configuration The AC wire
77. ing the display buttons always following the same procedure e Use ENTER to scroll the digits from left to right e Use ESC to return to the previous digit from right to left e Press ESC several times to return to the previous menus Use DOWN to progressively scroll the numerical scale downwards from 9 to 0 e Use UP to progressively scroll the numerical scale upwards from 0 to 9 After entering the password press ENTER to access the information gathered in this section e Address This section of the menu allows you to set the address for the serial communication of single inverters connected to the RS485 line The addresses that can be assigned are 2 to 63 Use the UP and DOWN buttons to scroll the numerical scale At present the AUTO selection cannot be used Display Setting This section of the menu allows users to set the characteristics of the display 1 Light setting of the mode and adjustment of the brightness of the display Mode PN REV NA1 0 Page 78 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US ON Light always ON OFF Light always OFF AUTO Automatic light control The light comes ON whenever a button is pressed and stays on for 30 sec after which it gradually goes out Intensity Adjustment of display brightness scale from 1 to 9 2 Contrast Adjustment of display contrast scale from 1 to 9 3 Buzzer Button sound setting ON The sound of the buttons is activated OFF the sound of the button
78. l Blocks 19 AC Conduit Entry 22 Lo DC Knockout Plug AC Output Screw Terminal Block Figure 3 14 AC connection for Standard UNO 2 0 2 5 I OUTD US and S version UNO 2 0 2 5 I S OUTD US PN REV NA1 0 Page 53 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US 10 15 CONNECTIONS OF THE SIGNALS TO THE MAIN BOARD a01 Main board 11 Ref manual _ Ref inverter Description a01 J9 J10 Input varistors a03 J7 Connector for negative grounding of the inputs a04 J8 Connector for positive grounding of the inputs a06 J11 J12 Output varistors a07 J4 Inverter data memory card housing a08 BT1 Battery housing a09 91 32 Rotary switches for setting the standard of the country and the language of the display a10 53 Switch for setting the termination resistance of the R5485 line a12 J13 J14 Connection of the RS485 line on RJ45 connector a13 J6 J15 Radiomodule board slot a14 J24 Speed sensor connections remote control RS485 22 J19 J20 AC output screw terminal block 23 J21 J22 DC intput screw terminal block Figure 3 15 Main Board Each cable connected to the connectors of the communication and control signals must pass through the signal access and signal wiring duct 17 shown in the Figure 3 16 below In order to plug the signal cables into the inverter it is necessary to replace the signal plug screw 20 with an EMT FITTING 3 4 thread 14 NPSM This is a standard NEMA 34 box connector that ma
79. l Manual UNO 2 0 2 5 I OUTD X US Each multi string inverter will work independently of the others and will supply the grid with the maximum power available from its section of photovoltaic panels 18 8 NOTES ON THE SIZING OF THE SYSTEM Decisions about how to structure a photovoltaic system depend on a certain number of factors and considerations to make such as for example the type of panels the availability of space the future location of the system energy production goals over the long term etc A configuration program that can help to correctly size the photovoltaic system is available on the Power One web site www power one com 18 9 POWER DERATING In order to allow inverter operation in safe thermal and electrical conditions the unit automatically reduces the value of the power fed into the grid Power derating can take place due to adverse environmental conditions or due to unsuitable input voltage values The inverter applies power derating based on a number of parameters Out of all the parameters affecting the power derating of the inverter the worst case parameter takes precedence when determining the value of the power derating 18 10 POWER REDUCTION DUE TO ENVIRONMENTAL CONDITIONS The inverter can reduce the power during certain periods of the day due to ambient temperatures exceeding the maximum rating for full power operation as specified in the data sheet The inverter will continue to deliver the maximum available pow
80. l the inverter that cannot Fault measurement be checked externally If carried out the problem is when the persistent even after inverter is switching the inverter connected to the OFF and then ON again grid of the Contact the Power One leakage current Service Department of the DC side PV generator compared to ground imposed by regulations to have a measurement redundancy 2 PN REV NA1 0 Page 100 of 134 E031 Error Read V Error Read I E032 Interlock fail E034 Remote OFF E035 Switch ON the inverter PN The Technical Manual UNO 2 0 2 5 I OUTD X US measurements on the same parameter carried out by two different circuits Measurement of the internal voltage at the ends of the output relay out of range There is too greata difference in voltage between the input and the output of the output relay Measurement of the output voltage unbalance carried out between the three phases out of range only in three phase models Temperature outside the inverter below 25 C Wrong V measure Wrong Measure Under Temperature Error inside the inverter IGBT not ready This is an error inside the inverter that cannot be checked externally If the problem appears repeatedly you must contact the Power One Service Department This is an error inside the inverter that cannot be checked externally If the problem appears repeatedly you
81. l to change the value Once the correct value has been selected Press ENTER to save PN REV NA1 0 Page 82 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US Press ENTER to confirm the change Press ESC or ENTER to exit the menu Set Time U lt lt Indicates the Protection Trip Time associated with the absolute value of the Under Voltage setpoint Press ENTER Time Min U lt lt NOTE The default setting is 0 16 seconds To change Use the UP DOWN arrows on the display panel to change the value Once the correct value has been selected Press ENTER to save Press ENTER to confirm the change Press ESC or ENTER to exit the menu Set Time F gt gt Indicates the protection trip time associated with the absolute value of the Over Frequency setpoint Press ENTER Time Min F gt gt NOTE The default setting is 0 16 seconds To change Use the UP DOWN arrows on the display panel to change the value Once the correct value has been selected Press ENTER to save Press ENTER to confirm the change Press ESC or ENTER to exit the menu Set Time U gt Indicates the protection trip time associated with the intermediate value of the Over Voltage setpoint Press ENTER Time Max U gt NOTE The default setting is 1 second To change Use the UP DOWN arrows on the display panel to change the value Once the correct value has been selected Press ENTER to save Press ENTER to confirm the change Press ESC or ENTER to exit the menu
82. lem persists after switching the inverter OFF and then Input OC Input OV REV NA1 0 Page 94 of 134 Start Timeout E019 Error 3 PN The Technical Manual UNO 2 0 2 5 I OUTD X US E017 Ground E018 Fault Self Test stage and inverter stage This is usually due to communication problems on the internal bus of the inverter Error inside the inverter regarding the time for starting steady state operation of the DC AC circuit part Inverter The alarm is generated during normal operation of the inverter a ground leakage current is detected in the DC section of the system The alarm is accompanied by the lighting up of the red LED on the front of the inverter The inverter may even also generate the E018 alarm message for the AC leakage currents associated with the capacitive nature of the photovoltaic generator compared to ground Before connecting to the grid the inverter Inverter Module Start Up Timeout Leakage Current Fail Leakage current sensor self ON again contact the Power One Service Department Error inside the inverter that cannot be checked externally If the problem persists after switching the inverter OFF and then ON contact the Power One Service Department If possible measure the insulation resistance using a megohmmeter positioned between the photovoltaic field positive terminal short circuited to the negative pole and
83. line in the last element of the chain by switching a10 Figure 3 18 switch to ON position lt Monitor Description Switch for setting the termination resistance of the RS485 line Figure 3 18 Connecting to a monitoring system with daisy chain arrangement PN REV NA1 0 Page 57 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US If a single inverter is connected to the monitoring system activate the termination resistance of the communication line by switching switch a10 Figure 3 18 to ON position Set a different RS485 address on each inverter of the chain No inverter should have Auto as its address An address can be chosen freely from out of 2 to 63 The address on the inverter is set through the display and the push button panel see Part 4 Operations for more information The length of the RS485 communication line must not exceed 1000m to ensure good connectivity No more than 62 inverters can be connected to the same RS485 line If one or more inverters are added to a system at a later time for continued proper operation of the RS485 communication system ensure any new inverters have proper addresses set and that only the last inverter in the chain has the bus termination switch a10 in the ON active position a10 When shipped from factory the following defaults are set RS485 address default is address two 2 e Bus Termination switch a10 default setting is
84. meters dictated by the PN REV NA1 0 Page 71 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US standard of the country of installation e Turns ON if the mains voltage is present and within the parameters dictated by the standard of the country of installation In this condition the inverter starts the sequence of grid connection The above verification can take several minutes from ES 53uv I 630 V 70 a minimum of 30 seconds up to several minutes ai s 2 depending on grid conditions and settings relative to Lis J GUL A the standard of the country e At this point the b17 in Figure 4 3 icon will flash this indicates the start up of the DC DC circuit booster part This icon will remain permanently switched ON when the DC DC will be operating at steady state the flashing of the icon usually lasts a few seconds Immediately after this the b18 in Figure 4 3 icon which indicates the AC DC circuit inverter part will turn ON normally Immediately thereafter this the grid connection will start During this phase the icons will be displayed in sequence on the b21 in Figure 4 3 until the connection of the inverter is complete After the inverter is connected the icons on the whole line b21 will come ON steady Figure 4 4 commissioning procedure screen shots If the inverter disconnects from the grid the icons of the left side cable and plug of the line b21 will stay ON e Once the connec
85. must contact the Power One Service Department Wait for the temperatures to which the inverter is exposed to return within operating range If the problem persists contact the Power One Service You must remember to wait for the time necessary to allow the inverter to warm up Error inside the inverter that cannot be checked externally If the problem persists after switching the inverter OFF and then ON again contact the Power One Service Department REV NA1 0 Page 101 of 134 Vout Avg Error not shown on the display E036 PN The Technical Manual UNO 2 0 2 5 I OUTD X US remote ON Average Vout out of range Low insulation resistance amorphous mode only been switched OFF remotely remote OFF and remains in waiting state for the signal that will switch it ON again remote ON The average grid voltage value every 10 minutes does not fall within the allowed ranges The grid voltage at the point connected to the inverter is too high This may be caused by a grid impedance that is too high Towards the end of the timeout the inverter limits the power to check whether the grid voltage stabilizes within the normal parameters If this does not happen the inverter disconnects from the grid This error can appear only if the Amorphous mode is enabled This function is enabled only in inverters remotely If the unit does not switch ON disable
86. n board 11 in Figure 3 15 above It is mounted vertically and connected to the inverter via two connectors a13 and anchored using two screws It is necessary to install the included antenna outside the inverter using one of the signal connector conduit openings as shown in the figures below PN REV NA1 0 Page 59 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US Standard Version S Version to the external wiring box 17 Electric Duct Signal Wiring Conduit 8 DC Conduit Entry Figure 3 21 Installing monitoring system via a RADIOMODULE A With the installation of the RADIOMODULE in the unit apply the FCC Label supplied with the inverter and shown below the regulatory label The FCC label contains the FCC mark and FCC ID of RADIOMODULE REGULATORY LABEL FCC LABEL PN REV NA1 0 Page 60 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US The monitoring is carried out using the PVI DESKTOP device Figure 3 22 Monitoring using Power One PVI DESKTOP 10 20 CONFIGURABLE RELAY CONNECTION PN REV NA1 0 Page 61 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US The inverter has a user accessible multi function relay a09 in Figure 3 20 that can be configured via front panel programming controls to operate in the four separate operating modes listed below The user has access to C contacts which include a common connection normally open NO and normally closed NC contac
87. n bodies 12 DISPLAY AND KEYPAD 12 1 DESCRIPTION OF SYMBOLS AND DISPLAY FIELDS The operating parameters of the equipment are displayed through the display warnings alarms channels voltages etc During operation the display behaves dynamically which allows some information to be displayed cyclically see Section 2 2 below PN REV NA1 0 Page 66 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US b1 Indicates the transmission and reception of data through the RS485 line b2 Indicates the presence of the RS485 communication line b3 Reports the presence of a line of radio communication Radiomodule card installed b6 Warning symbol indicates presence of power derating input voltage out of range or power limitation imposed by the grid b7 Reports a derating of power due to high internal temperature b8 Instaneous power generated for the grid b9 MPPT SCAN function activated b10 Lines of test for the cyclical display of inverter parameters error codes and the menu navigation Livertere OK ii Mer Dl Feo 11 26 3680 kWh c 53 b13 Displays the energy produced over a day b12 Display the total energy produced since installation of the inverter b11 Graph of the power fed into the grid from Oto 100 The time scale is settable to 8 16 24 hours Figure 4 0 Description of symbols and display fields b18 Indicates the circuit part for conversion from DC to AC b20 Output current from the
88. n one of the two poles and ground does not tend to OV and stabilizes on a value there is a ground leakage from the photovoltaic generator Example When the measurement is made between positive pole and ground a voltage of 200V is measured This means that if the system is made up of 10 modules in series and each one supplies 50V the leakage can be located between the 4th and 5th photovoltaic module PN REV NA1 0 Page 107 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US Va Vb M REVERT ETDs 50 V 90 V 50 V 50 V 90 V 90 V 90 V 50 V 90 V o Va voltage measured between pole and T 200V Vb voltage measured between pole and i 300V In all the measurements with 3 the ground of the inverter is indicated 16 7 THE POWER ONE SERVICE CALL Call Power One Technical Support at 1 877 261 1374 and provide the following information AURORA model Serial number Week of production Which LED is flashing Steady or flashing light What signals are shown on the display NOTE information above is available from the LCD display Additional helpful information when troubleshooting with the Power One Technical Service Engineers PN Provide a brief description of the fault Information on the photovoltaic field Brand and model of photovoltaic panels Identify the system structure Maximum array voltage and current values Number of strings in the array Number of panels for each
89. nce using a megohmmeter positioned between the photovoltaic field position 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 that 1 megaohm the photovoltaic generator must be checked by a technician installer to identify and eliminate the problem If the measured value is greater than 1 megaohm and the error warning continues to be present contact the Power One REV NA1 0 Page 98 of 134 Error Meas E027 V PN The Technical Manual UNO 2 0 2 5 I OUTD X US Bad Internal Reference voltage VGrid Measures Fault so allowing water and or damp see page 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 Service Department Damp increases leakage and can therefore be the cause of a reduction in insulation resistance
90. ndards and laws in the event of a local grid outage by the utility or when the grid equipment is switched OFF for maintenance operations the inverter must be physically and safely disconnected to ensure protection of personnel working on the grid To prevent possible islanding the inverter has an automatic protective disconnection system called Anti Islanding 4 10 GROUND FAULT IN THE PHOTOVOLTAIC PANELS An advanced ground fault protection circuit continuously monitors the ground connection and disconnects the inverter when a ground fault occurs indicating this condition by means of the red GFI LED on the LED panel 02 4 11 FURTHER PROTECTIVE DEVICES The inverter is equipped with additional protective devices to guarantee safe operation in any circumstance These protective devices include Continuous monitoring of the grid voltage to ensure the voltage and frequency values stay within operating limits Control of internal temperatures to automatically limit the power if necessary to ensure the unit does not overheat derating PN REV NA1 0 Page 25 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US PART 2 UNPACK amp SELECT INSTALL LOCATION PN REV NA1 0 Page 26 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US 5 UNPACK AND INSPECT e Install the AURORA Inverter in accordance with the electrical standards prescribed by the applicable National Electric Code and or by other local regulations and codes Do
91. not connect an AURORA Inverter to the electrical distribution grid until after receipt i WARNING of a letter of authorization from the authority having jurisdiction 5 1 UNPACKING AND CHECKING Discard packaging elements immediately as to not cause unforeseen injury Packaging elements cardboard cellophane staples adhesive tape straps etc may cause cuts and or injuries if not handled with care They should be removed by suitable means and disposed of in accordance with any regulations enforced by the country of installation When you open the package check that the equipment is undamaged and make sure all the components are present If any defects or damage are encountered during unpacking of the inverter stop the process and 1 Document damage It is recommended that photographs be taken of the anomalies found 2 Consult the carrier to determine carrier claim requirements 3 Inform the Power One distributor from whom the inverter was purchased 5 2 INCOMING INSPECTION It is the customer s responsibility to examine the condition of the unit shipped Upon receipt of Power One s AURORA Inverter please perform the following check e Inspect the shipping container for any external damage e Inventory the contents against the listing below and verify receipt of all items Use care not to discard any equipment parts or manuals e Call the delivering carrier if damage or shortage is detected If inspection reveals damage to t
92. nput voltage of the inverter Insufficient irradiation Wrong configuration of the photovoltaic generator ora configuration at resistance using a megohmmeter positioned between the PV field positive terminal short circuited to the negative pole and ground as described in the operation chapter If the measured value is less than 1megaohm the photovoltaic generator must be checked by a technician installer to identify and eliminate the problem If the measured value is greater than 1 megaohm and the error warning continues to be present contact the Power One Service Department Error inside the inverter that cannot be checked externally If the problem persists after switching the inverter OFF and ON again contact the Power One Service Department Check the inverter input voltage If it does not exceed the Vstart check that there is sufficient irradiation and that the composition of the system is correct If it exceeds the Vstart contact the Power One Service Department Check the inverter input voltage If it does not exceed the Vstart check that there is sufficient irradiation and that the composition of the system is correct If it REV NA1 0 Page 103 of 134 Grid Fail Grid voltage parameters outside the limits Grid Fail W003 Table Fail W009 Empty Wind rr Wind Models Only Table Bulk UV W011 PN The Technical Manual UNO 2 0 2 5 I OUTD X US Bulk Under Volta
93. ns of the accident prevention chapter Power One accepts no liability if the checking and maintenance cycles indicated in this manual and in the attached documentation are not complied with correctly and also when maintenance is entrusted to unqualified staff 17 2 ROUTINE MAINTENANCE Routine maintenance operations can be carried out directly by the installer PN REV NA1 0 Page 110 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US Perform monthly cleaning of the equipment verify in particular the W cleaning of the heat sink 08 in order to avoid obstructions that could compromise the air flow Use compressed air a vacuum cleaner or special cleaners if possible Clean the photovoltaic panels every six months at the change of season W or as necessary The performance of the system depends very much on the condition of the PV panels To clean follow the specifications of the PV panel supplier Every six months or in the event of malfunctioning check that the environmental conditions have not changed drastically exposure to weather conditions also check that the inverter or PV panels have not been shaded or isolated by foreign bodies Once a year or in the event of malfunctioning check the tightness of EMT Fitting the fixing of the connectors of the inverter front cover 04 and of the wiring box front cover 06 Any infiltration can generate pro blems of humidity and consequent short circuit 200 h 1 000 h 1 000 h AJ
94. ns to communicate the potential hazards of the equipment e g magnetic fields hazardous voltages high temperatures possibility of discharges generic hazard etc 3 15 THERMAL HAZARD Fs WARNING Removal of guards or covers is allowed only 10 minutes after the voltage d has been removed or shut down this is to let components cool down and allow any see electrostatic charges and parasitic voltages to be discharged CAUTION HOT Certain parts may be hot immediately following shut down due to elevated surface temperature e g transformers accumulators coils etc Wait 10 minutes for components to cool Use caution when touching components within the unit 3 16 CLOTHING AND PROTECTIVE DEVICES Sharp edges and corners have been minimized at the factory but not completely eliminated therefore always wear protective clothing and personal protective devices compliant with prevailing safety standards Appropriate Personal Protective Equipment PPE must be worn at all times when operating or servicing this equipment PN REV NA1 0 Page 20 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US All operations on the equipment should be performed with properly electrically insulated instruments 3 17 LOCATION OF SAFETY NOTICES Please note the location of safety notices on the AURORA Inverter for notification and protection They are located on both side panels of this unit 3 18 SAFETY NOTICES The location of safety
95. nt if any issues affecting safety or normal operation are found Avoid temporary repairs All repairs should be carried out using only factory approved spare parts installed in accordance with its intended use and by a licensed contractor or authorized Power One Service representative Liabilities arising from commercial components are delegated to their respective manufacturers PN REV NA1 0 Page 19 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US 3 14 HAZARDOUS AREAS AND OPERATIONS 3 14 1 1 Environmental conditions and risks The equipment can be installed outdoors but only in environmental conditions that do not prevent its regular operation Adverse environmental conditions such as sun rain snow wind extreme hot or sever cold altitudes humidity etc can lead to a reduction in performance Power One CANNOT be held responsible for disposal of the equipment displays cables batteries accumulators etc Therefore the customer must dispose of these substances in accordance with the regulations in the country of installation The same precautions should be adopted for dismantling the equipment Do not operate around explosives or particularly flammable environmental conditions The installer and or operator should appropriately train personnel in the proper operation of the inverter The installer and or operator must properly secure the installation premisis from public access and or highlight with warning sig
96. nverter Operation time found PN REV NA1 0 Page 88 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US If the test is not passed the machine stops until the test is passed The tests that can be carried out are the following Max Voltage Disconnection from the distribution grid for Overvoltage operable on the single phase single phase models or on the three phases R S and T three phase models Min Voltage Disconnection from the distribution grid for Overvoltage operable on the single phase single phase models or on the three phases R S and T three phase models Max Frequency Disconnection from the grid due to Over Frequency Min Frequency Disconnection from the grid due to Under Frequency Alarm This section of the menu allows you to set the switching of a relay contact available as a normally open contact N O and also as a normally closed contact N C This contact can be used for example to activate a siren or a visual alarm control the disconnect device of an external transformer or control an external device Maximum ratings of the alarm contact 240Vac 1A and 30Vdc 0 8A The switching of the relay can be set in four different modes PRODUCTION the relay switches when the inverter connects to the grid ALARM the relay switches when there is an alarm code E ALARM conf the relay switches if there are alarms code E or warnings code W chosen by the user from a list the lis
97. ol connection The connection and disconnection of the inverter to and from the grid can be controlled through an external control The function must be enabled in the associated Settings menu When the function is disabled grid connection disconnection of the inverter is dictated by the presence of the normal parameters When the remote control function is enabled besides being dictated by the presence of the normal grid connect parameters connection disconnection to the grid also depends on the state of the R and R terminals present on the connector a14 shown in Figure 3 24 a part of the main board 05 shown in Figure 3 15 With the function enabled as noted above and The R and R terminals open floating the inverter operates normally The R and R pins shorted together the inverter is disconnected from the grid and a Remote Control OFF message is shown on the display Since this is a low level digital input the wiring to the R R terminals is typically small 18AWG to 24 AWG Note The external signal should be from a set of dry contacts with no external voltage applied REV NA1 0 Page 63 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US 10 22 GRID STANDARD SETTING OF THE COUNTRY AND LANGUAGE DISPLAY There are different grid parameters dictated by the electric company according to the country in which the inverter is installed There are various grid voltages depending on the inst
98. ose selected the relay switches state C Common contact and therefore closes or opens the contact The relay NO N ormally open remains switched from its rest condition until the alarm or warning has disappeared Crepuscular meaning twilight the relay usually switches when the voltage from the photovoltaic generator exceeds falls below the threshold set for grid connection If the NO or NC contact is chosen the contact will stay open or closed until the inverter has an input voltage higher than the one selected for grid connection The contact remains switched from its rest condition for as long as the inverter is switched ON even if itis not connected to the grid This mode is useful for disconnecting large output transformers that could have unnecessary consumption during the night PN REV NA1 0 Page 62 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US Connection to the multi function relay Figure 3 23 Configurable relay connection The device to be connected to the relay can be of different types light sound etc but must comply with the following requirements Alternating current Maximum Voltage 240 Vac Maximum Current 1 A Direct current Maximum Voltage 30 Vdc Maximum Current 0 8 A 10 21 REMOTE CONTROL CONNECTION eT l z z li s WINO R5485 A14 Speed sensor connections remote control RS485 Figure 3 24 Remote contr
99. ovoltaic system depend on a certain number of factors and considerations to meet the type of panels the availability of space the expected location of the system energy production goals over the long term etc A program designed to optimize string configuration and help to correctly size the photovoltaic system is available on the Power One website at www power one com 7 2 OVERALL DIMENSIONS The overall dimensions are expressed in mm and in inches PN REV NA1 0 Page 30 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US Standard version 5 version 769mm 30 3 Figure 2 2 Dimensions of the UNO 2 0 2 5 X I US 7 3 BRACKET DIMENSIONS PN REV NA1 0 Page 31 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US The overall dimensions are expressed in mm and in inches Standard version 5 version 285mm 1161 285mm 11 81 482mm 18 98 726 5mm 28 607 665mm 26 96 Timm 433 18 5mm 0 73 100mm 3 83 Timm 0 87 Figure 2 3 Mounting bracket dimensions for the UNO 2 0 2 5 I X OUTD 7 4 ENVIRONMENTAL CHECKS e Consult the technical data to ensure the environmental conditions at the installation site meets requirements such as temperature humidity altitude degree of protection etc DONOT install in hazardous locations where gasses or flammable substances may be present e Position the inverter at the installation site such that it is easily
100. ower point with sensitivity and adjustable time intervals MPP parameter Analog inputs setting if any Allows access to setting the parameters associated with the analog sensors connected as the input Analog Inputs Input Strings where present Allows access to carry out checks on the status of the fuses and on the current imbalance of the strings present in the input Fuse control parameters Reactive power input setting where present Allows access to settings necessary to manage the reactive power input into the grid in different ways Reactive Power parameter Limitation active power setting where present Allows access to settings necessary to set a limit on active power output of the inverter Power reduction parameter 14 3 DYNAMIC BEHAVIOR OF THE DISPLAY If MPPT scan function is enabled icon b9 will be shown on the display See configuration in the MPPT settings menu section This icon will flash during scanning During operation the following values are displayed in rotation e Voltage and current b15 and b16 Figure 4 3 from the photovoltaic generator According to the configuration or model of the inverter the voltages and currents of one or both channels or of the single strings will be displayed The input channel considered is indicated by the value entered on icon b14 Figure 4 3 11 26 e Voltage and current b19 and b20 Figure 4 3 on LU the various phases Ac
101. photovoltaic generator The inverter indicates that too low an insulation resistance RISO has been detected presence of a leakage to ground of the PV generator and feeds the power extracted from the photovoltaic generator into the grid The problem may be connected with an insulation fault in the PV modules or in the connections DC side Whenever the control system of the inverter detects an anomaly W or fault E in the operation of the monitored system the yellow LED comes on steady and a message indicating the type of problem found appears on the display 01 The error can be inside or outside the inverter see Alarm messages Indicates an operating anomaly in the internal ventilation This does not cause much of a problem to the inverter because the fan starts only at hight temperatures combined with high output powers Indicates that the grid voltage for allowing the inverter to connect to the grid is not present The inverter shows the NO Vac message on the display REV NA1 0 Page 75 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US In the event of malfunctioning it is extremely dangerous to try to eliminate the fault personally The instructions given below must be strictly followed if you do not have the experience and necessary qualification to work safely please contact a specialized technician 15 1 SPECIFICATIONS ON THE BEHAVIOR OF THE LEDS Next to each state of the inverter indicated through the
102. r the input voltage has dropped below the Under Voltage limit set at 7096 of Vstart Power One sets the time at 60 sec The user can set it at from 1 to 3600 sec Example with the UV Prot time set at 60 seconds if the Vin drops below 70 of Vstart at 9 00 the inverter stays connected to the grid taking power from it until 9 01 PN REV NA1 0 Page 89 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US MPPT This section of the menu allows you to set the parameters of the Maximum Power Point Search Tracking MPPT function This function is useful when there are shadowed areas on the photovoltaic generator that can create several maximum power points in the work curve MPPT amplitude the amplitude of the interference introduced in DC is chosen through the setting of this parameter to establish the optimal working point There are three settings to choose from LOW MEDIUM and HIGH The default setting is MEDIUM Multi max scan through the setting of this parameter you can enable disable the scan decide the frequency with which the scan is carried out and override it manually Enable Disable Enables Disables the scan for identifying the maximum power point of the system Scan Interval this allows you to set the interval of time between scans It must be Kept in mind that the shorter the interval between scans the greater the loss of production because during the scan energy is transferred to the grid but not at the maximum
103. rt PVI DESKTOP Contact Power One Service with any questions about the compatibility of the devices 13 2 TYPES OF DATA AVAILABLE The inverter provides two types of data which are accessible through the appropriate interface software and or through the display 01 in Figure 1 2 and 1 3 Real time operating data Real time operating data can be transmitted on request through the communication lines and are not recorded in the inverter For data transmission to a PC the free software supplied with the inverter can be used please check at www power one com for more updated versions Internally stored data The inverter internally stores a set of data that are necessary for processing statistical data and an error log with time marking PN REV NA1 0 Page 69 of 134 14 COMMISSIONING WARNING WARNING The Technical Manual UNO 2 0 2 5 I OUTD X US Do not place objects of any kind on the inverter during operation Do not touch the heatsink while the inverter is operating Some parts may be very hot and cause burns Before proceeding with commissioning make sure all checks and verifications indicated in the section on preliminary checks have been completed successfully Indicates the transmission and reception of data through the rs485 line Indicates the presence of rs485 communication line Indicates the presence of a line of radio communication radiomodule card installed Warning symbol indicates pres
104. rters Converters Controllers and Interconnection System Equipment for use with Distributed Energy Resources CSA CSA C22 2 No 107 1 01 General Use Power Supplies Rule Part 15 Subpart B Unintentional Radiators Class B Limits 3 3 GENERAL INSTALLATION WARNINGS WARNING PN The AURORA 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 s Technical Services at 877 261 1374 All operations regarding transport installation and start up including maintenance must be carried out by qualified trained personnel and in compliance with all prevailing local codes and regulations REV NA1 0 Page 15 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US Normal operation of this grid tied inverter system is possible only when properly connected to an appropriate AC distribution network grid Before connecting the AURORA inverter to the local distribution grid approval from the grid operator and any local authority having jurisdiction is required Installation and connection of the inverter must be done by qualified technical personnel The Power One AURORA Inverter is designed and tested according to international safety requirements Ul 1741 IEEE 1547 but as with all elec
105. s National Electric Code Canada Electric Code wiring rules and others The customer must make sure the operator has the necessary skill and training to do his her SS job Technician in charge of using and maintaining the equipment must be licensed and E e qualified for the described tasks and must have the experience to correctly interpret what is xA described in the manual For safety reasons only a qualified electrician who has received training and or has demonstrated skills and knowledge in construction and in operation of this unit can install this inverter PN REV NA1 0 Page 9 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US 2 3 VALIDITY AND AVAILABLE VERSIONS Table1 Part Number Coding Information Product Series US Designed for North America Switchbox OUTDOOR use only Frequency S With Isolated Integral Output DC Disconnect Switch The UNO product is an engineered product for most applications and requires extensive documentation for complete specification Please discuss needs with Power One Technical Support Inverter Platform There are two versions of the UNO delineated by the maximum output power 2 0 kW or 2 5 kW For inverters of equal output power the variant between the models is the presence or lack thereof of the DC disconnect switch UNO 2 0 I US UNO 2 0 I OUTD US o Weide dar e 2 0 kW WEIGHT 42 51 19 3kg witch and Wiring box MODELS DIMENTIONS 30 3 x 14 4 x6 3 in
106. s is deactivated 4 Power Graph Allows users to set the time scale of the power graph 8 16 24h e Service This section of the menu is reserved for installers To access this area requires the extended password specific to this inverter Contact Power One Technical Service to obtain this password New PW This section of the menu allows users to change the password for accessing the settings menu default 0000 We ADVISE users to be very careful in memorizing the new password If the Password is misplaced it will not be possible to access the inverter since there is no Reset function for security reasons Accessing the Service Menu Contact Power One Technical Service to get the extended service password This password is specific to the respective inverter It will enable customers to gain access to the parameters available in the Service Menu Using the UP and DOWN arrows enter the password obtained from the Power One Technical Service Press ENTER 171 171 17 LILILI V ex P G rare LILILI A Figure 4 6 Display when entering extended service menu The follow the settings in the red circle 1 Set U gt gt Indicates the absolute maximum value of the Over Voltage setpoint NOTE The default setting is 12096 of Vnom PN REV NA1 0 Page 79 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US To change Use the UP DOWN arrows on the display panel to change the value Once the correct val
107. s operating normally During this phase the inverter automatically carries out a research and analysis of the maximum power point MPP available from the photovoltaic generator The inverter indicates that too low an insulation resistance RISO has been detected presence of a leakage to ground of the PV generator and feeds the power extracted from the photovoltaic generator into the grid The problem may be connected with an insulation fault in the PV modules or in the connections DC side Whenever the control system of the inverter detects an anomaly W or fault E in the operation of the monitored system the yellow LED comes on steady and a message indicating the type of problem found appears on the display 01 The error can be inside or outside the inverter see Alarm messages Indicates an operating anomaly in the internal ventilation This does not cause much of a problem to the inverter because the fan starts only at hight temperatures combined with high output powers Indicates that the grid voltage for allowing the inverter to connect to the grid is not present The inverter shows the NO Vac message on the display REV NA1 0 Page 92 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US 16 2 SPECIFICATIONS ON THE BEHAVIOR OF THE LEDS The equipment is able to indicate errors warnings on the display only if the input voltage is higher than the Vdc min voltage POWER LED flashing or ON see Part 4 Operation Next to e
108. s should be connected based on the above table of utility voltage configuration Three terminal positions 1 2 and 3 are present on the inverter AC terminal block as in the illustration above 10 13 CHARACTERISTICS AND SIZING OF THE AC CABLES The cross section of the AC line conductor must be sized correctly in order to prevent unwanted disconnections of the inverter from the grid due to high impedance of the line that connects the inverter to the power supply point If the impedance is too high it causes an increase in the AC voltage that on reaching the limit set by the country of installation causes the inverter to switch OFF 10 14 CONNECTION TO THE AC SIDE TERMINAL BLOCK Connect the AC wires on the inverter AC terminal block 1 2 3 based on the utility voltage configuration table above PN REV NA1 0 Page 52 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US In order to plug the input cables into the inverter is necessary to replace the AC Knockout Plug 19 with an EMT FITTING 3 4 thread 14 NPSM This is a standard NEMA 34 box connector that matches the wiring method used EMT RMT etc NOTE EMT Fitting 3 4 is equivalent to PG 21 EMT Fitting is equivalent to PG 16 The illustrations below show the AC connection for both Standard and S version of the inverter Standard Version S Version Note The dotted line in these illustrations indicates where a wire can be connected if chosen AC Output Termina
109. save Press ENTER to confirm the change Press ESC or ENTER to exit the menu Set U lt Indicates the value of the intermediate Under Voltage setpoint NOTE The default setting is 88 of Vnom To change Use the UP DOWN arrows on the display panel to change the value Once the correct value has been selected Press ENTER to save Press ENTER to confirm the change Press ESC or ENTER to exit the menu Set F gt Indicates the value of the intermediate Over Frequency setpoint NOTE The default setting of this inverter is 60 5 Hz To change Use the UP DOWN arrows on the display panel to change the value Once the correct value has been selected Press ENTER to save Press ENTER to confirm the change Press ESC or ENTER to exit the menu Set F lt Indicates the value of the intermediate Under Frequency setpoint NOTE The default setting is 59 3Hz To change Use the UP DOWN arrows on the display panel to change the value Once the correct value has been selected Press ENTER to save Press ENTER to confirm the change Press ESC or ENTER to exit the menu Set Uconn gt Indicates the maximum and minimum grid voltage value for connection to the grid Press ENTER Max Uconn gt NOTE this is the default setting of this inverter is to be determined To change Use the UP DOWN arrows on the display panel to change the value Once the correct value has been selected Press ENTER to save PN REV NA1 0 Page 81 of 134 The
110. ser to enable disable the Intermediate Under Voltage Protection feature Press ENTER U lt Protection Enable NOTE this is the default setting of this inverter To change Use the UP DOWN arrows on the display panel to change the value Once the correct value has been selected Press ENTER to save Press ENTER to confirm the change Press ESC or ENTER to exit the menu Disable F gt This functionality allows to enable disable the Intermediate Over Frequency Protection feature Press ENTER F gt Protection Enable NOTE this is the default setting of this inverter To change Use the UP DOWN arrows on the display panel to change the value Once the correct value has been selected Press ENTER to save PN REV NA1 0 Page 86 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US Press ENTER to confirm the change Press ESC or ENTER to exit the menu Disable F lt This functionality allows user to enable disable the Intermediate Under Frequency Protection feature Press ENTER F lt Protection Enable NOTE this is the default setting of this inverter To change Use the UP DOWN arrows on the display panel to change the value Once the correct value has been selected Press ENTER to save Press ENTER to confirm the change Press ESC or ENTER to exit the menu Slow Ramp Slow Ramp Soft Start indicates the output power ramp at connection This feature can enable or disable this function Press ENTER Slow Ramp Disabl
111. so have settled inside the equipment if not suitable protected 17 7 DISMANTLING DECOMMISSIONING AND DISPOSAL Power One CANNOT be held responsible for disposal of the equipment displays cables batteries accumulators etc and therefore the customer must dispose of these substances which are potentially harmful to the environment in accordance with the regulations in force in the country of installation If the equipment is dismantled to dispose of the products it consists of users must stick to the regulations in force in the country of destination and in any case avoid causing any kind of pollution Dispose of the various types of materials that the parts of the equipment consist of in dumps that are suitable for the purpose Table 11 Disposal of Components COMPONENT MATERIAL OF CONSTRUCTION Frame brackets Arc welded steel FE3 Casini OF COVES ettet ntt m plastic FEE M D Gaskets and seals secet Teflon Viton Electrical eed per Rubber Cable Nylon Backup battery Lead Lithium 17 8 SHUT DOWN PROCEDURE There are three options for shutting down the inverter a Disconnect the DC and the AC grid by disconnecting its associated switches in any order The inverter will shut down within a few seconds necessary to discharge the internal capacitors b Disconnect the DC input by turnin
112. steady or intermittent lighting of the relevant LED a message that identifies the operation it is carrying out or the detected fault anomaly is also shown on the display 01 section b10 see below ic ibis Inverter OK QM 010 r I kW Mon 01 Feb 11 26 E e y C503 lw WA EE E POWER ALARM GFI UP DOWN ENTER Code Description Code Description b10 Lines of text for the cyclical display of 13 Display Keypad inverter parameters error codes and the menu navigation Figure 4 5 Specifications on the behavior of the LEDs 15 2 INSULATION FAULT LED Procedure following insulation fault warning When the red LED comes ON first try to reset the warning through the multi function button ESC on the LED panel 02 If the inverter duly reconnects to the grid the fault was due to temporary phenomena Power One recommends having the system inspected by the installer or a specialized technician if this malfunctioning occurs frequently If the inverter does not reconnect to the grid make it safe by isolating it by means of the disconnect switches on both the DC side and the AC side and then contact the installer or an authorized service center to have the photovoltaic generator fault repaired PN REV NA1 0 Page 76 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US 15 3 DESCRIPTION OF THE MENUS The display 01 in Figure 1 2 and 1 3 has a section b10 In Figure 4 3 graphic display for moving through t
113. string Can the fault be reproduced If so how Is the fault cyclical in nature If so how often Was the fault apparent at the time of installation If so has it got worse Describe the atmospheric conditions at the time the fault appears appeared REV NA1 0 Page 108 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US PART 6 MAINTENANCE GUIDE PN REV NA1 0 Page 109 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US 17 MAINTENANCE 17 1 GENERAL CONDITIONS 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 and restore the normal conditions correctly or in case make sure this is done Maintenance operations must be carried out with the equipment disconnected from the grid unless otherwise indicated For cleaning DO NOT use rags made of filamentary material or corrosive products that may corrode parts of the equipment or generate electrostatic charges Avoid temporary repairs All repairs should be carried out using only manufacturer approved 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 of the Accident prevention chapter Always use the personal protective equipment provided by the employer and comply with the safety conditio
114. suffcient irradiation and that the composition REV NA1 0 Page 104 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US Jbox fail W017 Fuse control board fail DC string fail SPD DC Protection Open W018 SPD DC protection open SPD AC protection open W019 SPD AC protection open PN connected to the grid Fuse s on the fuse boards is are damaged Overvoltage surge arresters situated on the DC side are damaged Overvoltage surge arresters situated on the AC side are damaged of the system is correct If it exceeds the Vstart contact the Power One Service Department 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 Loot at the inspection window present on each surge arrester DC side If itis red the surge arrester is damaged and the cartridge must be replaced if the alarm status continues to be present even though all the surge arresters have a green inspection window contact the Power One Service Department Look at the
115. t set in the relevant section of the SETTINGS menu CO2 Amount of CO2 saved during the current month e Last 30 days This section of the menu allows users to display the statistics for the last 30 days E 30d Energy produced over the last 30 days Val Value of production for the last 30 days calculated with the currency and conversion coefficient set in the relevant section of the SETTINGS menu CO2 Amount of CO2 saved over the last 30 days Last 365 days This section of the menu allows users to display the statistics for the last 365 days E 365 Energy produced over the last 365 days Val Value of production for the last 365 days calculated with the currency and conversion coefficient set in the relevant section of the SETTINGS menu CO2 Amount of CO2 saved over the last 365 days User period This section of the menu allows the statistics for a period selected by the user to be displayed Once the start and end dates for the period has been set the following data are available E Energy produced during the selected period Val Value of production for the selected period calculated with the currency and conversion coefficient set in the relevant section of the SETTINGS menu CO2 Amount of CO2 saved during the selected period 15 6 SETTINGS MENU When SETTINGS is selected from the three main sub menus the first screen for the password is displayed in the display The default password is 0000 This can be changed us
116. t ground cable a02 to the connector for negative grounding of the DC inputs a03 a02 a03 a04 grounding of the inputs grounding of the inputs Figure 3 7 Standard Version Negative Grounding Description In order to plug the input cables into the inverter it is necessary to replace the DC knockout plug 18 with an EMT FITTING 3 4 thread 14 NPSM This is a standard NEMA 34 box connector that matches the wiring method used EMT RMT etc NOTE EMT Fitting 3 4 is equivalent to PG 21 EMT Fitting is equivalent to PG 16 PN REV NA1 0 Page 47 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US See Part 7 Appendix to determine the EMT tightening torque values to maintain the NEMA 4X environmental protection rating 10 10 1 2 Standard Version Positive Grounding Inverter Ground Connection Connect ground cable a02 to the connector for positive grounding of the DC inputs a04 a02 a03 a04 Ground Cable the inputs the inputs Figure 3 8a S version positive grounding In order to plug the input cables into the inverter itis necessary to replace the DC Knockout plug 18 with an EMT FITTING 3 4 thread 14 NPSM This is a standard NEMA 34 box connector that matches the wiring method used EMT RMT etc NOTE EMT Fitting 3 4 is equivalent to PG 21 EMT Fitting 2 is equivalent to PG 16 See Part 7 Appendix to determine the EMT tightening torque values to maintain the NEMA 4X environmen
117. t is appears only before carried out by connection to the grid 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 SelfTest E021 Inverter relay Before Thisisanerrorinside PN REV NA1 0 Page 96 of 134 E022 DC Inj error E023 PN The Technical Manual UNO 2 0 2 5 I OUTD X US l Self Test Error 4 Relay self test timeout Do Injection out of range connecting to the grid the inverter carries out some internal tests One of these tests regards the correct operation of the booster relay The test is carried out by forcing the switching of the relay and checking its functionality The error is generated if a problem is found with the operation of the relay 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 n any case the inverter does not stop because of the the inverter that cannot be checked externally If the problem persists after switching the inverter OFF and then ON again contact the Power One Service Department By its nature the alarm appears only before
118. t may also show choices that are not seen for the specific model CREPUSCULAR the relay switches only when it exceeds the input voltage set for connection to the grid Remote ON OFF This section of the menu allows you to enable disable the connection disconnection of the inverter to from the grid through the relevant control signal R R Disable the connection disconnection of the inverter to from the grid is dictated by the input voltage from the photovoltaic generator and output grid voltage parameters of the inverter Enable the connection disconnection of the inverter to from the grid is dictated by the state of the R signal compared to the R signal as well as by the input voltage from the photovoltaic generator and output grid voltage parameters of the inverter Sleep Mode This functionality turns OFF the inverter completely and the power absorption is reduced to a minimum 0 6W In this mode the inverter allows display of the information available even in the absence of input voltage and therefore in the absence of sufficient irradiation of the photovoltaic panels In fact the display can be awakened by pressing any button on the display with the exception of the ESC button After 30 seconds of inactivity the display will once again switch OFF automatically Enabled DEFAULT Disabled UV prot Time This section of the menu allows you to set the time for which the inverter stays connected to the grid afte
119. t pairs This contact can be used in four different operating configurations that can be set in a dedicated menu Operating modes Production the relay switches whenever a connection to and therefore a disconnection from the grid occurs So if the NO or NC contact is chosen the contact will stay open or closed until the inverter is connected to the grid Once the inverter connects to the grid and starts to export power the relay switches state and therefore closes or opens When the inverter disconnects from the grid the relay contact returns to its position of rest namely open or closed e Alarm the relay switches whenever there is an alarm on the inverter Error No switching occurs when there is a Warning So if the NO or NC contact is chosen the contact will stay open or closed until the inverter reports an error once the inverter reports an error the relay switches state and therefore closes or opens The contact remains switched from its rest condition until normal operation is restored e Alarm configurable the relay switches whenever there is an alarm Error or a Warning which have been previously selected by the user through the dedicated menu Ifthe NO or NC contact is chosen the contact will stay open or closed until the inverter reports an error or a warning out of those selected from the menu once the inverter displays an Error or a NC Normally closed Warning out of th
120. tal protection rating PN REV NA1 0 Page 48 of 134 PN The Technical Manual UNO 2 0 2 5 I OUTD X US 10 10 2 S Version Negative Grounding default configuration Inverter Ground Connection In the inverter box connect ground cable 302 to the connector for negative grounding of the DC inputs a03 DC Switch Wiring Box Internal connections In the DC switch wiring box connect the internal DC connection cables to the DC Input terminal blocks 14 as follows Position 4 Negative input poles Position 6 Positive input poles a02 a03 a04 Ground Cable grounding of the inputs grounding of the inputs Figure 3 8b S Version Negative Grounding DC Input Terminal Blocks REV NA1 0 Page 49 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US DC Plug Screw DC Switch Figure 3 9 DC Switch wiring box internal connections DC Switch Wiring Box PV String connection In the DC Switch Wiring Box connect the DC input cables from the PV string to the DC input terminal block 14 as follows Position 4 Negative input pole of the photovoltaic generator Position 5 Positive input pole of the photovoltaic Code Description generator DC Input Terminal Blocks Figure 3 10 DC Switch box wiring PV string connections In order to plug the input cables into the inverter it is necessary to replace the DC Knockout Plug 18 with an EMT FITTING 3 4 thread 14 NPSM This isa standard NEMA 34
121. tches the wiring method used EMT RMT etc NOTE EMT Fitting 3 4 is equivalent to PG 21 EMT Fitting is equivalent to PG 16 PN REV NA1 0 Page 54 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US See Part 7 Appendix to determine the EMT tightening torque values to maintain the NEMA 4X environmental protection rating Standard Version S Version e a T oam L1 m E an nn E H g vane Dls oon a FL Description Signal Wiring DC Knockout Plug LLL 120 Signal Knockout Plug Figure 3 16 Connection to the communication signal The signal cables are connected to the main board 11 in Figure 3 15 inside the inverter by means of the terminal connectors supplied 10 16 SERIAL COMMUNICATION CONNECTION RS485 The RS485 communication line is responsible for connecting the inverter to the monitoring devices or for carrying out daisy chain in out connections of multiple inverters The RS485 connecting cables can use both the terminal connections a14 in Figure 3 15 as well as the RJ45 connectors to be connected to the dedicated port a12 displayed below PN REV NA1 0 Page 55 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US Connection of conductors with RJ45 connectors a12 The RJ45 connectors A and B available for the RS485 communication are equivalent to each other and can be used interchangeably for the input or for the output of the line to cr
122. tely after the fault is detected To measure the insulation resistance of the PV generator compared to ground the two poles of the PV generator must be shorted using a suitably sized switch Figure 6 0a Measuring the insulation resistance Once the short circuit has been made measure the insulation resistance RISO using a meg ohmmeter positioned between the two shorted poles and ground of the inverter Figure 6 0a FV Inverter Figure 6 0b RISO not connecting to the grid If the RISO is less than 1 MOhm the inverter does not connect to the grid because of low insulation of the photovoltaic generator to ground Figure 6 0b The RISO is affected by the environmental conditions the PV generator is in E g PV modules wet from damp or rain and therefore the measurement must be made imme diately after the inverter gives the RISO LOW warning 17 5 STORAGE AND DISMANTLING 17 6 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 PN REV NA1 0 Page 112 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US 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 al
123. ter To work the inverter must be connected to the electric grid since its operation can be equated to a current generator that supplies power in parallel with the grid voltage That is why inverters cannot support the grid voltage islanding HHH PN REV NA1 0
124. terials used in this document are the property of their respective owners Failure to designate a mark as registered does not mean that such mark is not a registered trademark The Power One name and logo are registered trademarks of Power One Inc in the U S A and other countries All rights reserved No licenses are conveyed herein implicitly or otherwise under any intellectual property rights Power One Renewable Energy Solutions LLC 740 Calle Plano Camarillo California 93012 United States PN REV NA1 0 Page 3 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US Contents ee Oc Awad TRADEMARK CMM EUM 2 1 PFPOREWORD raises ww ce ees sven een es mene me 6 2 INTRODUCTION ee eee 8 2 1 Taarer n E ee s 8 2 2 db 16024 19 10 1D Di oL 8 2 3 VALIDITY AND AVAILABLE usu ux RR Ru Eu prune nep 9 2 4 CONNIE sap Cane Q 11 2 5 MAINTENANCE AND ERUN c NN 11 2 6 BIGURES AND IMAGES IN THIS LY oN Lace reer tree tiene tre emer irre tere narra rere errs SUPER interstate nesters err ES ED 11 2 7 STORAGE OF THIS INFORMATION ra MM MEME MM ME MM MM 12 2 8 P pp IONAL INTORMATI OIN E 12 OE god i
125. the OFF position 53 Switch for setting termination resistance of the RS485 line Figure 3 19 RS 485 connection 10 18 MONITORING SYSTEM VIA SERIAL RS485 The RS485 line can be connected to various monitoring devices that can be in local or remote mode Local monitoring from PC with PVI USB RS485 232 adaptor and Aurora Communicator software Local monitoring from a remote display such as the PVI DESKTOP device e Remote monitoring with PVI AEC EVO monitoring system and Aurora Vision Portal P1 For local monitoring Power One recommends connecting its PVI USB RS485 232 adaptor between the first unit of the daisy chain and the computer Equivalent USB RS485 adaptors are available on the market can also be used for the same purpose however they have never been specifically tested and Power One cannot guarantee correct operation of the connection Please note that these devices may also require external termination impedance whereas this is not necessary when using the Aurora PVI USB RS485 232 PN REV NA1 0 Page 58 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US r PVI USB RS485_232 PVI Desktop 102 ON iin OFF a10 OFF L PVI AEC EVO Figure 3 20 Monitoring system via serial connection 10 19 MONITORING SYSTEM VIA POWER ONE RADIOMODULE The Aurora PVI RADIOMODULE board is an accessory for the wireless transmission of data via radio waves to a monitoring device Itis installed on the mai
126. tility V is the nominal output voltage rating The rate of change in frequency shall be less than 0 5 Hz per second PN REV NA1 0 Page 125 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US 19 3 TIGHTENING TORQUES To maintain the NEMA 4X protection of the system and for optimal installation the following tightening torques must be used Inverter front cover 04 screws 19 47in lbs Wiring box front cover 06 screws 19 47in Ibs AC output screw terminal block 22 13 28 in Ibs DC input screw terminal block 23 13 28 in Ibs Signals screw terminal block 2 23in Ibs Table 12 Torque values 19 4 TOPOGRAPHIC DIAGRAM OF THE EQUIPMENT The diagram summarizes the operation of the inverter The main blocks are the DC DC input converter called booster and the DC AC output inverter Both work at a high switch over frequency and are small and relatively light This inverter is equipped with a high frequency transformer with galvanic isolation of the primary DC side from the secondary AC side while maintaining very high performance in terms of output and energy export This type of circuit allows for the grounding of the inputs both positive and negative where required by the solar panel type used or by the rules of the country of installation The inverter is equipped with a single input converter with Maximum Power Point Tracking MPPT to which it is possible to connect two strings of photovoltaic panels Due to the high efficienc
127. tion sequence has been completed the inverter starts to operate and indicates its correct operation by the green LED coming on steady on the LED panel 02 This means there is sufficient solar radiation to feed power into the grid e If the results of the grid condition check do not yield a positive result the unit will repeat the procedure until all the parameters controlling connection to the grid grid voltage and frequency insulation resistance are within the range During this procedure the green LED flashes ON and OFF After initial connection to the grid is made the wiring box must be configured using the dedicated Aurora Manager Software The software and relevant manual for carrying out this configuration are contained in the CD supplied with the inverter 14 2 DISPLAY ACCESS AND SETTINGS After commissioning the inverter it is necessary to set the configuration of the inverter by accessing the Account Settings from the display The following list contains the main adjustable parameters see Menu descriptions in Section 5 3 below PN REV NA1 0 Page 72 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US e Address RS485 Access menu to allow changing the RS485 address required in the case of communication bus for system monitoring e Vstart Re access the Vstart parameter which may need to be adjusted when short strings are used in the PV array MPPT scan Enables the inverter to carry out a search for the maximum p
128. to the operating state of the inverter PN REV NA1 0 The Technical Manual UNO 2 0 2 5 I OUTD X US Page 74 of 134 LEDon 4 LED flashing C9 LED off x Any one of the conditions described above LED Green Yellow Red Green Yellow Red Green Yellow Red Green Yellow Red Green Yellow Red Green Yellow Red Green Yellow Sleep mode auto switch OFF of the inverter Inverter initialization loading of setting and wait for grid check The inverter is connected and feeds power into the grid Anomaly in the insulation system of the photovoltaic generator We have Anomaly warning W warning codes Error error E warning codes Internally ventilation anomaly Disconnection from the grid Table 6 LED Behavior PN The inverter is in sleep mode input voltage 7096 less than the start up voltage set for both inputs Green LED flashes for 0 25s once every 10s This is a transition state due to the checking of the operating conditions During this phase the input power is sufficient and the inverter checks the conditions necessary for connection to the grid for example value of the input voltage value of the insulation resistance etc Green LED flashes for O 5s once every 1s The machine is operating normally During this phase the inverter automatically carries out a research and analysis of the maximum power point MPP available from the
129. trical and electronic equipment certain precautions must be observed and followed during installation Keep this documentation in the immediate vicinity of the AURORA Inverter It must be accessible for approved technical service and maintenance personal at any time Basic safety rules require using qualified and trained personnel possessing the skills necessary for assembly mounting start up and operation of the product The Aurora Inverter should be connected only to a dedicated branch circuit 3 4 ASSEMBLY WARNINGS WARNING e 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 e Assemble the inverter per the instructions in this manual Use care when choosing installation location and adhere to specified cooling requirements e Unauthorized removal of necessary protections improper use incorrect installation and operation may lead to serious safety and shock hazards and or equipment damage 3 5 ELECTRICAL CONNECTION WARNINGS WARNING PN e Make all electrical connections e g conductor termination fuses PE connection etc in accordance with prevailing regulations When working with the inverter powered ON adhere to all prevailing safety regulations to minimize risk of accidents e Systems with inverters typically require additional control e g switc
130. ture and humidity e Using the equipment with safety devices not working or disabled e The inverter meets NEMA4 construction standards Connection to equipment other than NEMA4 must meet requirements of local codes and standards Modifying the operating parameters that are restricted to the operator and or parts of the equipment to vary the performance or change its insulations e Cleaning with corrosive products that may damage parts of the equipment or generate electrostatic charges Using or installing the equipment or parts without having read and correctly interpreted the contents of the operating and maintenance section Do not warm or dry rags on the unit or accessory parts This is dangerous and could compromise the ventilation and cooling of the components 3 12 SAFETY INSTRUCTIONS Be sure all flammable materials including construction items are away Q from the unit Do not install the inverter in or near potentially explosive DANGER ALAS Normally grounded conductors may be ungrounded and energized when a ground fault is indicated Q e Risk of electric shock DANGER e Test before touching e Work on the AURORA Inverter must be carried out by qualified personnel PN REV NA1 0 Page 18 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US Do not connect an AURORA Inverter to the electrical distribution grid until after receipt of a letter of authorization from the authority having jurisdiction W
131. ue has been selected Press ENTER to save Press ENTER to confirm the change Press ESC or ENTER to exit the menu Set U lt lt Indicates the absolute minimum value of the Under Voltage setpoint NOTE The default setting is 50 of Vnom To change Use the UP DOWN arrows on the display panel to change the value Once the correct value has been selected Press ENTER to save Press ENTER to confirm the change Press ESC or ENTER to exit the menu Set F gt gt Indicates the value of absolute maximum Over Frequency setpoint NOTE The default setting is 60 5Hz To change Use the UP DOWN arrows on the display panel to change the value Once the correct value has been selected Press ENTER to save Press ENTER to confirm the change Press ESC or ENTER to exit the menu Set F lt lt Indicates the value of absolute minimum allowable Under Frequency setpoint NOTE The default setting is 59 3Hz To change Use the UP DOWN arrows on the display panel to change the value Once the correct value has been selected Press ENTER to save Press ENTER to confirm the change Press ESC or ENTER to exit the menu Set U gt Indicates the value of the intermediate Over Voltage setpoint NOTE The default setting is 110 of Vnom To change PN REV NA1 0 Page 80 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US Use the UP DOWN arrows on the display panel to change the value Once the correct value has been selected Press ENTER to
132. ulate freely To avoid overheating always make sure the flow of air around the inverter is not blocked Do not install in places where gasses or flammable substances may be present Do not install in rooms where people or animals live or are present for long periods of time due to the noise of the inverter e Avoid electromagnetic interference that can compromise the correct operation of electronic equipment with consequent situations of danger 7 8 HIGH ALTITUDE INSTALLATIONS ABOVE 2000 METERS 6562 FEET Information for operation in elevated ambient conditions When the installation site is in a high altitude location the effects of the thin dry air on the operation of the inverter must be considered e Derating Less efficient cooling therefore a greater likelihood of the device going into derating because of high internal temperatures e Electric Arc Reduction in the dielectric resistance of the air that in the presence of high operating voltages DC input can create electric arcs electrical discharges that may reach the point of damaging the inverter e Component lifetime As the altitude increases the failure rate of some electronic components increases exponentially because of cosmic radiation All installations at altitudes of over 2000 meters 6562 Feet must be assessed case by case considering the above listed items PN REV NA1 0 Page 34 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US 7 9
133. y and the large heat dissipation system a maximum power operation is guaranteed in a wide range of the ambient temperatures without the use of external cooling fans The inverter is controlled by two independent DSPs Digital Signal Processors and a central microprocessor The connection to the power grid is kept under control by two independent monitors in full compliance with the electric field norms both for power supply to the systems as well as security The inverter is already equipped with all the protections necessary for safe operation and compliance with the norms The operating system performs the operation of communicating with the relevant components to carry out data analysis All this guarantees optimal operation of the entire unit and high efficiency in all insulation and load conditions always in full compliance with the relevant directives standards and provisions PN REV NA1 0 Page 126 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US Figure 7 1 Topographic Diagram of Equipment PN REV NA1 0 Page 127 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US 18 5 EFFICIENCY CURVES The equipment was designed in compliance with energy conservation standards to avoid waste and unnecessary leakage The manufacturer has taken into consideration the current energy saving standards in United States Graphs of the efficiency curves of all the models of inverter described in this manual are shown below The efficiency
134. yer The customer is civilly liable for the qualification and mental or physical condition of the professional figures that interact with the equipment They must always use the PPE enforced by the laws of the country of destination and whatever is provided by their employer REV NA1 0 Page 14 of 134 H The Technical Manual UNO 2 0 2 5 I OUTD X US This symbol indicates a system earth conductor main grounding protective earth PE This symbol indicates an Alternating Current AC Value This symbol indicates an Direct Current DC Value This symbol indicates Phase This symbol indicates Grounding earth 3 2 EQUIPMENT LABELS 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 877 261 1374 The descriptions of the symbols used are as follows A wan ING G ice DANGEROUS VOLTAGE The product works with high voltages All work done 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 HOT TEMPERATURE Some surfaces may become hot Do not touch the product while it is in operation UL 1741 Standard for Safety for Inve
135. z 60 5 63 0 Hz Field Adjustable Adjustable Number of Phases 1 No He xl B minal Output Voltage AC 277 V ac 240 V ac 277 V ac 240 V See Note 2 208 V ac 208 V ac Normal Output Frequency PN REV NA1 0 Page 121 of 134 The Technical Manual UNO 2 0 2 5 I OUTD X US Continuous Output Current AC 9A 10A 10A 9A 10A 10A See Note 4 2200 W 2200 W Maximum Continuous Output 2000 W 2000 W 2000 W 2000W 2000 W 2000 W Power AC 50 C ambient See Note 4 Maximum Output Fault Current See Note 5 See Note 5 and Duration Maximum Output Overcurrent ISA ISA ISA ISA ISA ISA Protection Utility Interconnection and Voltage See Note 6 See Note 6 and Frequency Trip Limits and Trip Times Synchronization in rush current Negligible Negligible Trip Limit and Trip Time Voltage 2 Voltage 2 Accuracy Frequency 0 10 Hz Frequency 0 10 Hz Time 2 grid cycles 33 ms 60 Hz Time 2 grid cycles 33 ms 60 Hz Range See Note 4 See Note 4 Output Power Temperature See Note 4 See Note 4 Power Operating Ambient Enclosure Rating Type Notes PN Inverter models UNO 2 0 I OUTD US UNO 2 0 I OUTD S US have been evaluated for use in utility interactive applications The output of Inverter models UNO 2 0 I OUTD US UNO 2 0 I OUTD S US may be 277 V ac 240 V ac or 208 V ac which is user settable based on the utility system Maximum continuous output power can be deliver

The Technical Manual:

Contents

Download Pdf Manuals

Related Search

Related Contents