AURORA
Photovoltaic Inverters
INSTALLATION AND OPERATOR’S
MANUAL
Model number: PVI-2000-OUTD-AU Rev. 1.0
®
Installation and operator’s manual Page 2 of 65
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REVISION TABLE
Document
Revision
Author Date 9 Change description
1.0 Gianluca
Pieralli
27/10/2008 9 First release of th e doc ument
SAVE THESE INSTRUCTIONS!
IMPORTANT SAFETY INSTRUCTIONS
POWER-ONE: Reproduction and disclosure, even partially, of the contents of this
manual are strictly forbidden without prior authorization of PowerOne.
Installation and operator’s manual Page 3 of 65
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IMPORTANT SAFETY INSTRUCTIONS
This manual contains important safety and operational instructions that must be
accurately understood and followed during the installation and maintenance of the
equipment.
To reduce the risk of electrical shock hazards, and to make sure the equipment is
safely installed and commissioned, special safety symbols are used in this manual t o
highlight potential sa fety risks and important safety information. The symbols are:
WARNING: the paragraphs highlighted by this symbol contain processes
and instructions that must be absolutely understood and followed to avoid
potential danger to people.
NOTE: the paragraphs highlighted by this symbol contain processes and
instructions that must be rigorously understood and followed to avoid
potential damage to the equipment and negative results.
The equipment is provided with several labels, some of them with a yellow
background, which are related to safety issues.
Make sure to read the labels and fully understand them before installing the
equipment.
The labels use the following symb ols:
Equipment grounding conductor (Main grounding protective earth,
PE)
Alternate Current (Ac) value
Direct Current (Dc) value
Phase
Grounding (Earth)
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USEFUL INFORMATION ON SAFETY STANDARDS
FOREWORD
¾ The installation of AURORA must be performed in full compliance with national
and local standard s and regulations.
¾ AURORA has no internal user serviceable parts other than fuses.
For any maintenance or repa ir please contact the nearest authorized repair centre.
Please contact your reseller if you need to know the nearest authorised repair
centre.
¾ Read and understand all the instructions contained in this manual and become
familiar with the safety symbols in the relevant paragraphs before you install and
commission the equipment.
¾ The connection to the distributi on grid must be done only af ter rec eiving approval
from the distribution utility as required by national and state interconnection
regulations, and can be done only by qualified personnel.
¾ Cover the photovoltai c panels with dark opaque sheets before they are connected
to avoid any chance of high voltages appearing at the connecting wire
terminations.
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GENERAL
During inverter operation, some internal parts can be energised, in some cases, internal
parts can move or rotate and some surfaces can be hot.
Unauthorised removal of t he nece ssar y pr otections, improper use, incorrect installation
or incorrect operation may lead to serious damage to people and objects.
All transport, installation and start-up, as well as maintenance operations, shall be
carried out by skilled and trained personnel (all national regulations on accidents
prevention and electrical safety shall be complied with!!!).
Only qualified and trained people have skills for the assembling, start-up and operation
of the product, as well as the necessary requirements and qualifications to perform
such operations.
INSTALLATION
All equipment shall be installed according to the instructions and specifications
mentioned in the corresponding documents.
In particular, during transport and handling, parts shall not be bent and/or the
insulation distances shall not be changed. There should be no contact between
electronic parts and connection terminals.
Electrical parts must not be mechanically damaged or destroyed (potential he alth risk).
ELECTRICAL CONNECTION
The Aurora inverter should be installed incompliance with all prevailing local and
national regulations
Electrical connections shall be carried out in accordance with the applicable
regulations, such as conductor sizing, over-current protection devices and grounding
connection.
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OPERATION
Systems with inverters shall be installed in accordance with applicable electrical safety
and personnel safety requir ements. After the inverter has been disc onnected from the
both input power and output power connections allow the internal capacitors to
discharge before working on the equipment
Comply with all corresponding marks and symbols present on each device. During
operation, make sure that all covers and doors are closed.
MAINTENANCE AND SERVICE
Comply with manufacturer’s recommendati ons.
SAVE ALL DOCUMENTS IN A SAFE PLACE!
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PVI-2000-OUTD-AU
This document applies to the above-mentioned inverters, only
Fig.1 Product label
The identification plate present on the inverter includes the following data:
1) Manufacturer Part Number
2) Model Number
3) Serial Number
4) Production Week/Year
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CONTENTS:
1 FOREWARD...............................................................................10
1.1 PHOTOVOLTAIC
ENERGY...............................................10
2 SYSTEM DESCRIPTION..........................................................11
2.1 M
AIN ELEMENTS OF A PV SYSTEM: “STRINGS AND
ARRAYS”.........................................................................................12
2.2 D
ATA TRANSMISSION AND CHECK ..........................................14
2.3 AURORA
TECHNICAL DESCRIPTION .....................................14
2.4 P
ROTECTIVE DEVICES.............................................................16
2.4.1 Anti-Islanding................................................................16
2.4.2 Panel Ground Fault.......................................................16
2.4.3 Further Protective Devices............................................17
3 INSTALLATION ........................................................................18
3.1 P
ACKAGE INSPECTION ............................................................18
3.2 P
ACKAGE CHECK LIST............................................................19
3.3 C
HOOSING INSTALLATION LOCATION .....................................20
3.4 W
ALL MOUNTING ..................................................................21
3.5 P
RELIMINARIES TO ELECTRICAL CONNECTIONS .....................24
3.6 E
LECTRICAL CONNECTIONS....................................................27
3.7 A
CCESS TO THE TERMINAL BLOCKS BY REMOVING THE RIGHT
SIDE PANEL
.........................................................................................29
4 START-UP...................................................................................30
5 MONITORING AND DATA TRANSMISSION......................31
5.1 U
SER INTERFACE MODE.........................................................31
5.2 A
VAILABLE DATA ..................................................................33
5.2.1 Real time data................................................................33
5.2.2 Internally Logged Data.................................................34
5.3 LED
INDICATORS...................................................................35
5.4 M
ESSAGES AND ERROR CODES...............................................40
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5.5 LCD DISPLAY.........................................................................43
6 DATA CHECK AND COMMUNICATION.............................49
6.1 RS-485
SERIAL LINK...............................................................49
6.2 A
DDRESS SELECTION ..............................................................52
6.3 B
AUD RATE SETTING ..............................................................53
6.4 M
EASUREMENT ACCURACY....................................................55
7 TROUBLESHOOTING..............................................................56
8 TECHNICAL FEATURES.........................................................58
8.1 I
NPUT VALUES........................................................................58
8.2 O
UTPUT VALUES ....................................................................61
8.3 G
RID PROTECTION CHARACTERISTICS.....................................62
8.4 G
ENERAL CHARACTERISTICS ..................................................62
8.5 P
OWER DERATING ..................................................................63
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1 FOREWARD
This document contains a t echnical descri ption of the AURORA phot ovoltaic inve rter
so as to provide the installer and user all the necessary information about installation,
operation and use of AURORA.
1.1 PHOTOVOLTAIC ENERGY
Industrialised countries (greater energy consumers) have been experimenting with
energy-saving methods and reduc ing pollutant levels. This may be possibl e through a
shrewd and rational consumption of well-known resources, and also by looking for
new forms of clean and in exhaustible energy.
Renewable sources of energy are fundamental to solving this problem. Under these
circumstances, solar ener gy exploitation to generate electrical (photovoltaic) energy is
becoming more and more important worldwide.
Photovoltaic energy is, in any case, of great advantage to the environment because the
radiated energy we receive from the sun is transformed directly into electrical energy
without any combustion process and without producing any pollution.
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2 SYSTEM DESCRIPTION
AURORA is an inverter that exports energy to the electrical power distribution grid.
Photovoltaic panels transform the solar radiation into electrical energy in the form of
direct (Dc) current (through a photovoltaic field, also known as PV generator); In
order to utilise thi s ener gy and fee d it back to the distri bution gr id, t his energy sha ll be
turned into alternating (Ac) current. AURORA does t his conversion, also known as Dc
to Ac inversion, in a very efficient way, without using rotating parts but only static
power electronic devices.
When used in parallel with the grid, the alternate current generated by the inverter is
directly fed to the domestic distribution circuit, which in turn is also connected to the
public power distribut ion grid.
The solar energy system can thus feed power to all the connected devices, such as
lighting devices, household appliances, etc.
If the energy generated by t he photovolt ai c system is not enough, the energy necessary
to ensure the standard operation of the connected devices is drawn from the public
power distribution grid. If the energy produced exceeds that used, the difference is
directly fed to the grid, thus becoming available to other users.
According to nationa l and local standards a nd regulations the produced energy can be
sold to the grid or credited to the user for future consumption.
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2.1 Main Elements of a PV System: “STRINGS and ARRAYS”
The so-called “string” technology has been developed in order to reduce the
installation costs of a photovoltaic system as much as possible. These costs are mainly
related to the wiring operations on the Dc side of the inverter and the consequent
distribution on the Ac side.
A photovoltaic PANEL is composed of many photovoltaic cells assembled on the
same mount. A STRING is composed of a certain number of panels electrically
connected in series. An ARRAY is composed of one or more strings connected in
parallel.
Larger photovoltaic systems can be com posed of a certain number of arrays, c onne cted
to one or more AURORA inverters. By maximizing the number of panels in series per
string, the cost and complexity of the system wiring can be reduced.
9
PV Panel
PV String
PV Array
PV Cell
+
+
_
_
+
_
9 Fig.2 Array Compositio n
Array voltage value shall be within an acceptable range for the inverter. Please refer to
the technical data for the AURORA for details on the Dc operating voltage range.
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WARNING: String voltage shall not exceed 600 Vdc for any reason, to prevent any
damage to the equipment
NOTE: The minimum required input voltage for start the initial grid connection
sequence is 200Vdc.
When Aurora is connected, it will export energy on the grid since the in put range will
remain between 90Vdc and 580Vdc .
The total current of an array must also be within the capability limits of the inverter.
The 2000W model of AURORA is capable of handling a single array and the
maximum input current can be 10Adc.
In case the photovoltaic system exceeds t he capabili ties of a si ngle AURORA inverter,
additional invert ers can be added t o the system, each connected to a suitable section of
the photovoltaic field on t he Dc side, and t o the grid on the Ac side.
Each AURORA inverter will work independently from the others and will push to t he
grid the maximum power available from its own section of the photovoltaic panels.
The actual decisions on the way the photovoltaic system is structured and wired
depend on a number of fact ors and considerations, such as t ype and model of panels,
available area, location, energy targets, as well as on good design practices.
Power-One provides a system confi gur ati on tool on it s websit e (www.power-one.com
)
that can assist in modelling the system.
Fig.3 Simplified diagram of a photovoltaic system
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2.2 Data transmission and check
In case multiple inverters are used, they can be monitored remotely by using an
advanced communication system based on t he RS485 serial interface or on the Power
Line Modem (PLM) technology. For further information, refer to the corresponding
sections of this manual.
2.3 AURORA Technical Description
Figure 4 shows the AURORA block diagr am. The main blocks are given by t he input
Dc-Dc converters (also known as “ booster”) and the output inverter. Both the Dc-Dc
converters and the output inverter work at high switchi ng frequency to minimize size
and weight.
This model of AURORA is transformer-less, that means that there is no galvanic
isolation between input and output. This allows an increase in the inverter efficiency.
AURORA, on the other hand, is equipped with all the protection needed to operate
safely and to comply with existing safety regulations even without an isolation
transformer, as described in the paragraph regarding protective devices.
Fig.4 AURORA block diagram
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The block diagram shows the model AURORA PVI-2000-OUTD.
Thanks to its high efficiency and its widely dimensioned thermal dissipation system,
this inverter guarantees maximum power operation over a wide ambient temperature
range.
The inverter is controlled by two independent Digital Signal Processors (DSP) and a
central microprocessor.
The connection to the electrical grid is, therefore, controlled by two independent
computers, in compliance with electrical standards, power system standards and safety
standards.
the AURORA operative system communicates with the relative components to carry
out data analysis.
All this guarantees an optimal operation of the whole system and a very high
performance in every insulation and load situation, always in compliance with the
relative standards and regulations.
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2.4 Protective devices
2.4.1 Anti-Islanding
The Aurora inverter will automatically disconnect from the utility grid when t he utility
grid is out of range or whe n the inverter shut s down due to a fault condition, in order
to guarantee protecti on for persons operating on the utility gri d, in compliance with the
national standards.
AURORA PVI-2000-OUTD is equipped with an advanced Anti-Islanding protection
certified according to t h e following standards:
• AS4777.3-2005
2.4.2 Panel Ground Fault
This version of Aurora is designed f or connecti on to floating Phot ovoltaic arr ays only,
with the positive and negative terminals from the panels are not connected to the
Ground (the metallic support of the panel instead shall be connecte d to safety Ground
in accordance with existing electrical safety regulations). An advanced ground fault
protection circuit continuously monitors the ground connection and shuts down
AURORA in case a ground faul t is detected and indicates t he ground fault condition
by means of a red LED on the front panel. A terminal for the equipment grounding
conductor is provided in the AURORA inverter. For further information, please see
section 3.5.3.
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2.4.3 Further Protective Devices
AURORA is equipped with additional protections to guarantee safe operation under all
circumstances. The protections include:
¾ Continuous monitoring of the grid voltage to ensure the frequency and
voltage values are within the proper ope rational limi ts;
¾ Control of the internal temperatures to automatically limit power when
needed to make sure the unit does not overheat (heat-sink temperature
<=70°C [158°F]).
The many AURORA control devices determine a redundant structure to
guarantee safe operating use.
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3 INSTALLATION
WARNING: The electrical installation of AURORA must be made in
accordance with the local and national electrical standards and regulations.
WARNING: The connection of AURORA to the electrical distribution grid
must be performed only after receiving authorization from the utility that
operates the grid.
3.1 Package inspection
NOTE: The distributor presented your AURORA to the delivering carrier
securely packed and in perfect conditions. Upon acceptance of the package
from the distributor, the delivering carrier assumes responsibility for its safe
arrival to you. Despite of the attention paid by carrier in handling it,
sometimes the package and its contents might be damaged.
Please, carry out the following checks:
¾ Examine the shipping box for any visible damage: punctures, dent s or any other
signs of possible internal damage;
¾ Describe any damage or shortage on the receiving documents and have the
carrier sign their full name;
¾ Open the shipping box and inspect the contents for internal damage. While
unpacking, be careful not to discard any equipment, parts or manuals. If any
damage is detecte d, c all the de l i ver i ng car rier to determine the a ppr opr iate action.
They may require an inspection. Save all shipping material for the inspector to
see!
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If the inspection reveals damage to the inverter call your retailer, or authorized
distributor. They will determine if the equipment should be returned for repair. They
will also provide instructions on how to get the equipment repaired;
¾ It is your responsibility to file a claim with the delivery carrier. Failure to
properly file a claim for shipping damages may void warranty service for any
physical damages later reported for repair;
¾ Save AURORA original packaging, as it will have to be used in case the
equipment has to be shipped out for repairs.
3.2 Package Check List
Description Quantity (No.)
AURORA Photovoltaic Inverter 1
Bag containing a wa ll fixing ki t
composed of 4 stainless steel
screws, 4 blocks and a TX20
tap wrench, and a connector
kit, composed of 1 signal wire
gland, a double-hole seal, 1
positive Multicontact connector
cap and 1 negative connector
cap, 1 Binder connector
counterpart.
1
Installation drawing 1
Copy of this manual 1
Certificate of warranty 1
CD-Rom with communication
software
1
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3.3 Choosing installation location
The location for the installation of AUROR A should be selected in accordance to the
following recommendations:
¾ AURORA should be placed at a suitable height from the ground to allow easy
reading of the front display.
¾ Leave enough room around the unit to allow easy installation and maintenance
(Fig 5).
¾ Choose a location sheltered from sun radiation and able to provide some
ventilation.
¾ The screw and tabs for wall mounting need to be chosen according to the wall
construction material (stone, ful l bricks, holed bricks, etc).
WARNING: The metal surface in the back of AURORA could reach high
operating temperatures (up to 70°C
). Avoid contact of the surfa ce with
materials that are flammable or sensitive to high temperature (wallpaper,
fabrics, wood, etc.)
Fig.5 Installation location
500mm (18”
)
500mm (18”
)
>100mm
(4”)
>300mm
(12”)
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3.4 Wall Mounting
AURORA should be mounted in a vertical position as shown in figure 7.
NOTE: AURORA ratings are based on a vertical mounting position.
Although it is possible to mount AURORA in a tilted position, the
thermal performance in that case may be de-rated. In any case avoid
mounting AURORA with the front plate rotated, always make sure that
the fins of the front heatsink are vertical.
To facilitate wall mounting a reference drawing is provided in the package (Fig.6).
Use the drawing to locate the holes on the wall. A set of standard expansion
stainless steel screws is included in the package for use in mounting the AURORA
to a masonry wall. In case of different materials make sure to select the proper
mounting hardware. Always use stainless steel mounting hardware, if the supplied
hardware is not used.
The clearance hole in the mount bracket is 8 mm.
Fig. 6 Wall mounting diagram
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Install the expansion screws in the wall so that the head of the screws is about
4mm (~1/6”) from the wall surface. Then hang AURORA on the wall by fitting
the screw heads in the mounting slots as shown in Fig.7, and secure the screws.
Fig.7 AURORA wall mounting
It is possible to mount AURORA in a tilted position. In that case the thermal
dissipation will not be optimized and the unit may derate the maximum output
power at ambient temperatures below 40°C (see Fig. 9).
NOTE: In case of installation of several units, Power-One
recommends no t to install them in parallel, superimposed, rows.
In fact the heat generated by the bottom rows will get the ambient
temperature of the upper inverters to increase. At ambient temperatures higher than +
40 °C an output power derating may occur on the top units.
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Fig.8 Aurora, recommended assembling
It is recommended that the unit is not placed in direct sunlight.
WARNING: During operation, inverter surface can reach very high
temperatures.
DO NOT touch inverter surface to prevent the risk of burns.
Fig.9 Inverter tilted mounting
Deratin
- 5° 5°
0°
DeratinDeratin
NO Deratin
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3.5 Preliminaries to Electrical Connections
WARNING: The electrical connections can be done only after securing
AURORA to the wall.
WARNING: The connection of AURORA to the electrical distribution
grid must be performed only by skill ed operators and after having rec eived
authorization from the utility that operates the grid.
WARNING: For further details on each installation step, carefully read and
follow the instructions of this section (and sub-sections) step-by-step, as
well as all safety warnings. Any operation non-complying with the
instructions below can lead to operator/installer hazards and to equipment
damage.
WARNING: Always respect the nominal ratings of voltage and current
defined in chapter 8 (Technical Features) when designing your system. In
particular, regar ding the photovoltaic system:
¾ Maximum Dc array input voltage for each MPPT circuit: 600Vdc in
any condition.
¾ Maximum Dc array input current for MPPT circuit: 10Adc in any
condition.
WARNING: Verify the national regulations and the local standards, to
make sure that your installat ion design complies to them.
WARNING: carefully cover the entire surface of the photovoltaic panels
with an opaque material (possibly black) to protect them from sun radiation.
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NOTE: According to the typical assembly diagram (see Fig.8) each array
must be connected to Dc disconnect. An AC disconnecting mean provided
with fuses or an over-current protection must be used to connect AURORA
to the grid. Although the fuses are not mandatory, should you choose to use a
Power-One-approved over-current protection, we recommend insetting the m
in the system.
Recommended ratings for t he Ac over-cur rent prote ction device is maximum
10A, 240V.
9 Fig.10 General wiring diagram
WARNING: always open the AC disconnect breaker to disconnect
AURORA from the grid befor e opening the DC disconnect.
PV
Array
DC
Disconnect
Fuse rating
10A, 600V
A
C
Disconnect
Fuse rating
10A 240Vac
Wire in accordance with
NEC Section 690 and
applicable local codes
Load
Cente
r
Grid
AURORA
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WARNING: All power wires connecting AURORA must have a section of
at least 14 AWG (2.5mm
2
) and must be able to operate at temperature of at
least 90 °C.
We recommend using the following types of wires:
For connecting the panels: FG7 (0)R unipolar wire, or H07RNF wire with
sections 2.5; 4; or 6 mm
2
with an external diametre of max. 8,9mm.
For connecting to the grid: FG7(0)R tripolar wire with a section of 2.5
or 4 mm
2
with an external diameter of max 16,2mm.
At the bottom of the inverter, from left to right, (Fig. 11) there are:
¾ 1 watertight cap. This cap can be replaced by the PG16,5 cable gland supplied
with the inverter to route the signal cable for RS485 serial link.
¾ 1 Binder connector for connection to the grid
¾ 1 pair of Multicontact connector s, for the connection of the PV array (IN1).
¾ 2 watertight caps seal off the “IN2” inputs (only available on PVI-3600 models)
Fig.11 Connections at the bottom of the inverte r
WARNING: When making the electrical connections follow this exact
procedure to avoid exposure to dangerous voltages. Each step of the
procedure is explained in the following paragraphs.
To disconnect AURORA always open the AC breaker first and then
also the DC breaker prior to do any further operation and before
removing the AC and DC connections to the inverter.
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3.6 Electrical connections
Step 1/4: Open the Ac disconnect switch
Step 2/4: Open the Dc disconnect switch
Step 3/4: Connect AURORA to the Ac disconnect switch
WARNING: Use proper, low impedanc e wi res t o connec t AURORA to the
Ac disconnect.
WARNING: AURORA must be connected to the AC disconnect switch
with a tripolar wire: a phase conductor, a neutral conductor and a yellowgreen one for the earth connection (PE protection).
1) Lay the wire between AURORA and t he Ac disconnect switch
2) Enter the wire in the Binder counterpart connector provided, taking care
to respect the indicat ions present on the plastic near the terminal blocks
(as indicated in Fig. 11): terminal block 1 for Neutral, t erminal block 2
for the line, terminal block 3 not connected, and the terminal block
identified by the symbol for the PE earth connection.
3) Connect the Binder connector
Fig. 12 Binder connector
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WARNING: Pay special attention at not inverting the phase with the
neutral because it could compromise the system safety and cause
malfunctioning of the appliance
.
NOTE: In case your system has an additional kW-hour metre installed
between the Ac disconnect and A URORA, please apply the Ac connection
procedure to the terminals of the metre.
Step 4/4: Connect AURORA to the Dc disconnect swit ches
Power-One recommends, whenever it is possible, to use two separate
arrays, each with a current capacity lower than 10Adc, and to connect each
array to an input section of the AURORA inverter.
WARNING: Take special care to ensure the photovoltaic voltage polarity
corresponds to the symbols “+” and “-” labelled on the contacts of the
photovoltaic field.
Before connecting AURORA with the photovoltaic field, Power-One
recommends checking, using a proper gauge, tha t the polarity value and t he
voltage value allowed between positive and negative contacts are correct.
Array connection: Follow this procedure for each array.
1) Mount the positive cable between AURORA and the Dc disconnect.
2) Secure the cable to the counterpart multicontact connector (not
provided)
3) Connect the positive cable to AURORA
4) Mount the negativ e cable between AURORA and the Dc disc onne ct.
5) Secure the cable to the counterpart multicontact connector (not
provided)
6) Connect the negative cable to AURORA
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3.7 Access to the terminal blocks by removing the right side panel
WARNING: To avoid the risk of electric shock from energy stored in
capacitors. Wait 5 minutes after disconnecting both Ac and Dc
connections before opening the side panel.
To remove the side panel unscre w it using the Torx TX20 wrench supplied with
the inverter kit.
Fig. 13 Removing the side panel
After operation th e side panel screws shall be tightened with a torque of 1.5 Nm (13.2
in-lbs) to ensure watertight sealing.
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4 START-UP
WARNING: Do not lay any object on AURORA during operation.
WARNING: do not touch the he atsink during operati on, some parts
could be very hot and cause serious burns.
To start up AURORA switch the external Dc disconnect on the ON position.
1) Switch the Ac disconnect to the ON position.
2) AURORA will start operating and the green LED label Power on the
front panels will start blinking while the grid is checked to make sure that
voltage, impedance and frequency parameters are within operating range per
AS4777.3-2005
requirements. The check can last a few
minutes depending on the conditions of the grid. During the check the
LCD display will show a sequence of three screens, indicating:
• Remaining time for next connection.
• Grid voltage value and status (in or out of range)
• Grid frequency value and status (in or out of range)
3) If the grid check is successf ully completed the unit will perfor m a
protective test on the unit. It’s normal that the unit produces an audible
sound during the test.
4) Then the AURORA will export to the grid and the green Power LED will
be continuously lit (provided there is enough sol ar radiation to feed power
to the grid) .
5) If the grid check is not successful the unit repeats the check over and ove r
again until acceptable grid parameters are found. During this procedure
the green power LED keeps blinking. Measure the grid voltage and
frequency and then verify the grid configuration of the unit.
Installation and operator’s manual Page 31 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
5 MONITORING AND DATA TRANSMISSION
5.1 User Interface Mode
WARNING: The RS-485 wire must ensure a protection of at least 600V.
The AURORA inverter usually works automatically and is maintenance-free.
When solar radiation is not high enough to provide power for export to the grid
(during night time, for example) AURORA disconnects automatically, and enters
the stand-by mode, waiting to start working again. The operational cycle is
automatically restored as soon as the solar radiation is enough.
AURORA inverter can provide operational data in the foll owing ways:
¾ LED indicators
¾ Operational data on the LCD displ a y
¾ Data transmission on a dedicated serial RS-485 line or RS-232 l ine. The data can
be collected by a PC or dat a logger equipped with a suitable RS-485 or RS-232
port. In case you use the RS-485 line, a RS-485/RS-232 AURORA serial
interface converter model number PVI-RS232485 can be useful. You can also
use the AURORA Easy Control (*) data logger.
(*) Please check if this accessory is available with your installer or retailer.
Installation and operator’s manual Page 32 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
Fig.14 – Aurora data communication
Installation and operator’s manual Page 33 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
5.2 Available Data
AURORA provides two sets of data that are accessed using AURORA interface
software.
5.2.1 Real time data
The real time operating data can be transmitted upon request over the communication
lines and is not recorded internally by the AURORA inverter. The free AURORA
Communicator interface software, provided on the installation CD can be used to
retrieve and store data on a PC computer (please check on www.power-one.com
for
updated versions).
The following data are available:
¾ Grid voltage
¾ Grid current
¾ Grid frequency
¾ Power transferred to the grid
¾ Voltage of PV array
¾ Current of PV array
¾ Heat sink temperature
¾ Serial Number Part Number
¾ Manufacturing week
¾ Firmware revision code
¾ Energy produced so far in the day
¾ Leakage Current
Installation and operator’s manual Page 34 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
5.2.2 Internally Logged Data
AURORA stores internally the following data:
¾ Lifetime counter of grid c onnection time
¾ Lifetime counter of energy transferred to the grid
¾ Energy transferred to the grid every 10 seconds for the last 8640 periods of 10
seconds (which on average cover more t ha n 2 da ys logged data)
¾ Partial counter of grid connection time (the counter start time can be reset by
using the AURORA Communica tor software)
¾ Partial counter of energy (uses the same start time of the partial time counter)
¾ Last 100 fault conditions with error code and time stamp
¾ Last 100 variations to the grid connection parameters wit h parameter code, new
value.
The first two data of the list are displayed on the LCD and on the RS-485 interface,
while all the other data can be shown by the RS-485 interface only.
Installation and operator’s manual Page 35 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
5.3 LED Indicators
Above the display t here are three LED indicators: one to indicat e whether the inverter
is operating regular ly, one to signa l the prese nce of faul ts and one t o indi cate a gr ound
fault.
1. The green “POWER” LED indicates that AURORA is working correctly.
When the unit is powered on t his led is blinking while the grid is checked. If the
grid parameters are within the normative limits and there is enough solar energy,
the unit starts to export energy to the gri d and the LED i s on. If, on th e other hand,
the sun is too low, the LED keeps blinking and the LCD shows the message
“waiting for sun.”
2. The yellow “FAULT” LED indicates that AURORA has detected a fault . The type
of fault will be described in the LCD display.
3. The red “GFI” (ground fault) LED indicates that AURORA has detected a ground
fault in the PV system on the DC side. When this type of fault is detected,
AURORA immediately disconnects from the Grid and an error message appears on
the display. AURORA will remain in that status until the operator presses ESC
button ( 4 ) to restart t he connec ti on sequence. If AURORA does not connect and a
Ground Fault is detected again technical assistance should be contacted to review
the overall system for the ground fault condition.
Installation and operator’s manual Page 36 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
Fig.15 LED location
The following table summarize all the possible LED activation configurations
related to each AURORA inverter operating status.
KEY:
LED on
LED flashing
LED off
Any of the above conditions
1
2
3
4
Installation and operator’s manual Page 37 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
LEDs Status Operational Status Remarks
1
green:
yellow:
red:
Aurora self-disconnection
during nighttime
Input voltage less than 90
Vdc at both inputs
2
green:
yellow:
red:
Aurora initialization,
settings loading and
waiting for grid check
It is a transition status while
operating conditions are
checked.
3
green:
yellow:
red:
Aurora is powering the
grid
Standard machine operation
(search of max. power point
or constant voltage).
4
green:
yellow:
red:
System insulation device
faulty
Ground leakage found
5
green:
yellow:
red:
Defect – fault!!!
The Fault can be inside or
outside the machine. See the
alarm appearing on the LCD.
6
green:
yellow:
red:
Installation phase: Aurora
is disconnected from
grid.
During installation, it refers to
set-up of the address for RS485 communication.
7
green:
yellow:
red:
Grid disconnection Indicates a missing grid
condition
NOTE: Inverter status is indicated by the corresponding LED turning
steady on or flashing and by a di splay message that provides a description
of current operation or fault condition (see next sections).
Installation and operator’s manual Page 38 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
G
Y
R
1) Night time mode
AURORA disconnected during ni ght ti me; this occur s when i nput
power is too low to feed the inverter.
G
Y
R
2) AURORA initialization and grid check
Initialization in progress: input power sufficient to feed the
inverter; AURORA is veri fying start-up conditions (for inst ance:
input voltage value, insulation resistance value, etc.) and grid
check routine is launched.
G
Y
R
3) AURORA is feeding the grid
After completing a set of electronics and safety auto-test routines,
the inverter starts the grid connection process.
As mentioned above, during this stage AURORA automatically
tracks and analyzes the maximum power point (MPPT) of the
photovoltaic field.
G
Y
R
4) Ground insulation fault
AURORA indicates that insulation resistance was found to be too
low.
This may be due to an insulation fault in the connection b etween
the photovoltaic field inputs and the ground.
WARNING: Shock hazard! Do not attempt to correct this fault
yourself. The instructions below have to be followed very
carefully. In case you are not experienced or skilled enough to
work safely on the machine, contact a specialized technician.
What to do after an insulation defect has been found
When the red LED turns on, try to r eset the fault indication by
pressing the multi-functi on ESC key at t he side of the display. If
AURORA reconnects to the grid, the fault was due to a transient
event (such as condensation and moisture getting into the
panels). If this trouble occurs frequently, have the system
inspected by a specialized technician.
If AURORA does not reconnect to the grid, open both the DC
and AC disconnect switches to place AURORA into a safe
condition and contact an authorized service center to have the
system repaired.
Installation and operator’s manual Page 39 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
G
Y
R
5) Malfunction/Fault indication
Every time Aurora check system detects an operative malfunction
or fault of the monitored system, the yellow LED comes on and a
message showing the type of problem f ound appears on the LCD.
G
Y
R
6) RS-485 address setup indication
During installation, the yellow LED will keep flashing until the
address is acknowledged. For further information about address
entering, refer to section 6.3.
G
Y
R
7) Grid disconnection
If a grid failure event occurs while the system is regularly
operating, the yellow LED turns on steady.
Installation and operator’s manual Page 40 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
5.4 Messages and Error Codes
The system status is identified through message or error signals appearing on the LCD
display.
The tables below summarise the two types of signals that can be displa yed.
MESSAGES identify the AURORA current status; so they do not relate to faults and
nothing has to be done. The message wil l disappear as soo n as standard c onditions are
restored. See the Warning column (W) in the table below.
ERRORS identify a possible fault of the equipment or of the connected parts. The
signal will disappear as soon as the causes are removed, except for the ground
insulation fault on photovoltaic panels, for which the intervention of qualified
personnel is required. Usually, when an error signal appears, an action is needed. This
action will be managed as much as possible by AURORA or, in case this is not
possible, AURORA will supply all the necessary information to assist the person
fixing the fault on the equipment or system. See the Error column (E) in the table
below.
Installation and operator’s manual Page 41 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
Alarm n.
Message
Warning
code
Error
code
Description
1 Sun Low W001 //
Input voltage under threshold ( when
OFF )
2 Input OC // E001 Input Over current
3 Input UV W002 // Input Undervoltage
4 Input OV // E002 Input Overvoltage
6 Int.Error // E003 No parametres
7 Bulk OV // E004 Bulk Overvoltage
8 Int.Error // E005 Communication error
9 Out OC // E006 Output Overcurrent
10 Int. Error // E007 IGBT Sat
11 Int.Error // E008 Bulk Undervoltage
12 Int.Error // E009 Internal error
13 Grid Fail W003 // Incorrect grid parametres
14 Int.Error // E010 Bulk Low
15 Int.Error // E011 Ramp Fail
16 DC/DC Fail // E012 DcDc error detected by the inverter
17
Not used in
PVI-2000
// E013 No parameters
18 ---------- // // -------------19 Over Temp. // E014 Internal overtemperature
20 Cap. Fault // E015 Bulk capacitor fail
21 Inv. Fail // E016 Inverter fail detected by the DcDc
22 Int.Error // E017 Start Timeout
23 Ground F. // E018 Ileak fail
24 ---------- // // --------------25 Int.Error // E019 Ileak sensor fail
26 DC/DC Fail // E012 DcDc error detected by the inverter
27 Int.Error // E020 inverter relay fail
28 Int.Error // E021 DcDc relay fail
29 Int.Error // E019 Ileak sensor fail
30 Int.Error // E022 Autotest Timeout
31 Int.Error // E023 Dc-Injection Error
32 Grid OV W004 // Output Overvoltage
33 Grid UV W005 // Output Undervoltage
34 Grid OF W006 // Output Overfrequency
35 Grid UF W007 // Output Underfrequency
36 Z Grid HI W008 // Z grid out of range
37 Int.Error // E024 Internal error
38 ----------- // E025 Low insulation resistance ( log only )
39 Int.Error // E026 Wrong reference voltage (VRef)
40 Int.Error // E027
Wrong grid voltage measurement (
VGrid )
41 Int.Error // E028
Wrong grid frequency measurement
( FGrid )
42 Int.Error // E029 Wrong grid impedance
Installation and operator’s manual Page 42 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
measurement ( ZGrid )
43 Int.Error // E030
Wrong leakage current
measurement (ILeak)
44 Int.Error // E031 Wrong voltage measurement V
45 Int.Error // E032 Wrong current measurement I
46 Fan Fail W010 // Defective Fan ( log only )
47 Int.Error // E033 Internal temperature
Installation and operator’s manual Page 43 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
5.5 LCD Display
The 2-line LCD display is located on the front panel and shows:
9 the status of the inverter and statistical data;
9 service messages for the operator;
9 messages of faults or damages found.
Data are shown cyclically, the screens change every 5 seconds. On the right of the
display there is a button that when pressed freezes the screen. Pushing the button
again unfreezes the screen. When AURORA is turned on the display shows the
following screen for about 10 seconds:
Afterwards it begins to check the grid. While checking the grid the display shows
the three following screens cyclically:
9 This screen shows how many seconds are left before a new grid connection
Attempt will start
9 The following screen shows the measured value of the insulation resistance:
Initializing......
Please Wait
Next Connection
###### sec
Measuring Riso
……………
Installation and operator’s manual Page 44 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
9 This screen shows the grid voltage and the related status (in range or out of
range).
or
9 This screen shows the grid frequency and the related status (in range or out of
range, see section 9 for furt her de tails)
or
After AURORA is connected to the grid the display starts showing cyclically the
following information screens, each for 5 seconds:
9 First screen: Type and Part Number
9 Second screen: Serial Number and Firmware release number
Vgrid ### V
In range
Vgrid ### V
Out of range!
Fgrid ### Hz
In range
Fgrid ### Hz
Out of range!
Type ####
Part No. ####
S/N ####
Firmware ####
Installation and operator’s manual Page 45 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
9 Third screen: measured insulation resistance
9 Fourth screen: Output power and Voltage Input from the photovoltaic array
9 Fifth screen: Total energy exported to the grid (E-Total) and tot al operating time
(h-Total, that is time dur i ng which the unit was active). Both data are measured
since the unit was first operated.
9 Sixth screen: Time during which t he unit exported energy to the grid (Timegrid)
and number of times that unit connected to the grid (Numgrid).
Riso MOhm
Pac ## W
Vin ## V
E-Total ## KWh
h-Total ## h
Timegrid hh:mm:ss
Numgrid ##
Installation and operator’s manual Page 46 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
9 Seventh screen: Daily energy (E-Today) and mode of operation of the inverter
(ModeInverter)
¾ Eighth screen: Leakage current ( I-Leak )
In case the inverter is not working properly the Fault or Ground Fault LEDs will
turn on as described in paragra ph 5.3, and the following three screens scroll on the
LCD remaining on for 5 seconds. They contain important information that should
be communicated to service personnel and will show cyclically on the LCD, each
for 5 seconds:
¾ This screen shows the code of the error found, for further information refer to
Chapter 5.4.
E-Today ## Wh
ModeInverter OK
I-Leak
XXXXX mA
ERROR
##############
Installation and operator’s manual Page 47 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
The sequence of the screens is summarized in the following figure:
Type
Part N°
E-Today
ModeInverte
r
I n
itializing...
Please Wait
ERROR
Model
P/N
S/N
Firmware
Next Connection
se
c
Vgrid
In range
Fgrid
In range
Vgrid
Out of range
Fgrid
Out of range
I-Leak
Regular cycle
Grid erro
r
Regular cycle
Regular cycle
Exit from regular cycle
Come back to regular cycle
Loop - Erro
r
E-Total
h-Total
TimeGrid
NumGrid
Pac
Vin
S/N
Firmware
Installation and operator’s manual Page 48 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
The values that can be displayed on the previous screens are summarized in the
table below:
Data Descrizione
Vin Input voltage from photovoltaic array 1
Pac Output Ac power
E-Total
Total energy transferred to the grid since the
unit was first operated
E-Today Total energy exported to the grid today
h-Total Total time since the unit was first operated
Type Type of AURORA
S/N Serial Number
Part No° Part Number
Firmware Firmware release number
TimeGrid
Time during which the unit exported energy
to the grid
NumGrid Number of conne ctions to the grid
Leakage Leakage current
Installation and operator’s manual Page 49 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
6 DATA CHECK AND COMMUNICATION
6.1 RS-485 serial link
The RS-485 link uses two wires for signal s plus a third wire for signal grounding,
which is different from the equipment grounding of the unit. The wires must be
run in a watertight conduit through the bottom of the unit as explained in
paragraph 3.5 after removing the watertight cap and installing a suitable wat ertight
conduit connector.
A gasket with 2 holes is supplied together with the watertight conduit (cable gland
PG16,5) in case multiple units are connected on the same RS485 link through a daisy
chain. In case a single wire is used please stop the 2
nd
hole with the small white plug
included in the kit.
The wires are then run to the RS-485 screw terminal bloc ks that is located in the
internal compartment and is accessible by removing the right side panel. Please refer
to paragraph 3.7 for further details on the correct procedure to remove and reposition
the side panel.
¾ Signal wires must be connected to +T/R and –T/R terminals
¾ Grounding wire must be connected to the RTN terminal
Fig. 16 RS-485 serial link terminal blocks
RTN
RS485
ON
OFF
213S1
+TR
-TR
TERMIN
Switch
Terminal Line
Installation and operator’s manual Page 50 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
The single AURORA has a default address is two (2) and the S1 dip swit ch is in
the OFF position (pushed aw ay from the side access panel). The RS-485 address does
not have to be configured for the single AURORA inverter.
Up to 31 AURORA inverters can be connected on the same RS-485 line. The
maximum recommend RS-485 cable length is 1300 yards (1200 m).
In case multiple inverters are daisy-chained to the same RS-485 line, then the last
unit must be terminated by changing the position of the dip-switch shown in
Fig.16 from OFF to ON. The default position of the switch is OFF. Also, each
unit must have a different addre ss. Se e par. 6.2 to change the addresses.
In order for the RS485 communicat ion line to perform the best, Power-one
recommends to connect its PVI-RS232485 adapter before the first unit of the
daisy-chain (see fig. 17 for details)
Equivalent devices may also be used for the same purpose, but they have not been
tested therefore Power-one cannot grant the ri ght functionalities.
Please also note that ordinary commercial adapters may need additional impedance
termination. Aurora PVI-RS232485 adapter DOES NOT.
The following diagram shows how to connect multiple units on daisy-chain style in the
same RS-485 bus.
Installation and operator’s manual Page 51 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
Fig.17 Multiple units connection daisy-chain style
NOTE
: When using the RS-485 link there can be no more than 31 in verters
connected on the same link. Although you are free to choose any address
between 2 and 63, we recommend usi ng addresses between 2 and 34 for the
RS-485 serial link.
NOTE When using the RS-485 link, in case one or more inverters are later
added to the system; please remember to bring the dip switch that was the
last of the system back to OFF.
Installation and operator’s manual Page 52 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
6.2 Address selection
When several inverters are connected to the same communication channel each unit
must have a different address. The default address of each unit is 2. To assi gn a new
address the following information must be taken into account:
• Addresses 0 and 1: are reserved for host computers and monitoring
accessories such as Easy Controller display unit.
• The RS-485 serial link uses addresses from 2 to 34
Use the following procedure to set the ne w address:
1) Press the key on the side of the LCD display button for at least 5 seconds
2) AURORA disconnects from the gri d, the yellow LED begins to blink and the
display shows:
3) Press the key as many times as needed to select the address between 2 and 63.
After the 63 the address starts back from 0.
WARNING: Do not use the “AUTO” address. The automatic setting of
the addresses through this key is a procedure reserved exclusively to
installers and qualified personnel as it requires the use of a specific software.
4) Confirm the choice by pressing once mor e the key for at least 5 seconds. After
the confirmation AURORA connects again to the grid.
NEW ADDRESS
#####
Installation and operator’s manual Page 53 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
6.3 Baud Rate setting
1) After the inverter address have been defined according to the procedure included in
paragraph 6.2, if the button at the right side of the LCD is pushed continuously for at
least 5 sec and then released the display menu enters in the Baud Rate setting.
2) The display will show the wording “SET BAUD RATE” and the default baud rate
setting of: 19200
3) To confirm the baud rate sett ing displayed just push the button firmly for another 5
sec period.
4) conversely to show the other baud rate setting options just shortly push
the button.
SET BAUD RATE
19200
NEW ADDRESS
2
SET BAUD RATE
9600
SET BAUD RATE
4800
SET BAUD RATE
2400
Installation and operator’s manual Page 54 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
5) To confirm the selected baud rate that appear on the display keep the button firmly
pushed for at least 5 sec..
WARNING: In general the standard baud rate is at 19200. Only in case of long
distance or noisy transmission lines it is recommended to slow down the baud rate.
Installation and operator’s manual Page 55 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
6.4 Measurement Accuracy
Every measurement device can be affected by errors.
For each measurement the tables below show the following information:
• Measurement Unit;
• Delivery rate;
• Resolution.
Resolution
Data Unit
Display Measurement
Max
error
Output voltage PV VP1 Vdc 1 V 600mV
2%
Output current PV IP1 Adc 0.1 A 15mA
2%
Power PV Pin1 W 1 W 10W
2%
Output voltage Vout V 1 V -
2%
Output current Iout A 0. 1 A -
2%
Output power Pout W 1 W -
2%
Frequency Freq Hz 0,01 0,01 0,1%
Energy
produced
Energy Wh 1 Wh - 4%
Tot. time
counter
Lifetime
hh:mm:ss
1 s 0,2%
Partial time
counter
Partial
Time
hh:mm:ss
1 s 0,2%
Installation and operator’s manual Page 56 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
7 TROUBLESHOOTING
AURORA inverters comply with standards set for grid-tied operation, safety and
electromagnetic compatibility.
Before being delivered by Power-One, the product has undergone successfully to
several tests to check: operation, protective devices, perfor mance and durability.
All these tests, together with the system ensuring Power-One quality, guarantee an
optimal operation of AURORA.
However, should any malfunc tion of the photovoltaic syst em arise, solve problems as
follows:
9 Work under safe conditions as stated in chapter 3.5 and following. Make sure that
the connections between AU RORA, the phot ovoltaic f ield and power dist ribution
grid have been made correctly.
9 Carefully observe which LED is blinking and read the signal appearing on the
display; then, following the instructions given in chapters 5.4 and 5.5 try to
identify the type of fault found.
If the malfunction cannot be removed by following these instructions, contact the
service centre or the installer (see following page).
Installation and operator’s manual Page 57 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
Before contacting the service centre, keep the following information cl ose at hand, to
maximise efficiency of intervention:
AURORA INFO
NOTE
: Information to be found directly on the LCD display
9 AURORA model?
9 Serial number?
9 Week of production?
9 LED flashing?
9 Light blinking or steady?
9 Which signal is shown on the display?
9 Short description of the malfunction
9 Can the malfunction be reproduced?
9 If so, how?
9 Does the malfunction appear cyclically?
9 If so, how frequently?
9 Is malfunction present from installation?
9 If so, has it worsened?
9 Description of the weather conditions at the time the malfunction appeared
INFO on the Photovoltaic Field
9 Make and model of photovoltaic panels
9 System structure: - number of arrays and max. voltage and current values
- number of strings for eac h array
- number of panels for each string
Installation and operator’s manual Page 58 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
8 TECHNICAL FEATURES
8.1 Input Values
WARNING: the Photovoltaic field and system wiring must be configured so
that the PV input voltage is l ess than the maxi mum uppe r li mi t i ndepende nt ly
from the type, the number and the operating conditions of the chosen
photovoltaic panels.
As panel voltage also depe nds on working t emperat ure, the number of pa nels
per string shall be chosen according to the min. ambient temperature
expected in that special area (see table A).
WARNING: The inverter has a linear power derating related to the input
voltage, starting f rom 530 Vdc (100% output power) to 580 Vdc (0% outp ut
power)
WARNING: The open circuit voltage of the photovoltaic panels is affected
by the ambient temperature (the open circuit voltage increases as the
temperature decreases). Make sure that at the minimum temperature
estimated for the installation does not cause the panels to exceed the
maximum upper limit of 600Vdc. As an example, t he following table shows
for typical panels of 36, 48 and 72 cells, the maximum voltage of each panel
as function of the temperature (assuming a nominal open circuit voltage of
0.65Vdc at 25°C and a temperature coefficient of 0,0023V/°C). The table
shows, therefore, the maximum number of panels that can be connected in
series as a function of the minimum temperature at which the system will
operate. Consult the panel manufacturer for the correct temperature
coefficient of V
oc
, before calculating the voltage rating of the photovoltaic
array.
Installation and operator’s manual Page 59 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
36 Cells Panels 48 Cells Panels 72 Cells Panels
Minimum Panel
Temp.[°C]
Panel voltage
Max number of
panels
Panel voltage
Max number of
panels
Panel voltage
Max number of
panels
25 21.6 27 28.8 20 43.2 13
20 22.0 27 29.4 20 44.0 13
15 22.4 26 29.9 20 44.9 13
10 22.8 26 30.5 19 45.7 13
5 23.3 25 31.0 19 46.5 12
0 23.7 25 31.6 19 47.3 12
-5 24.1 24 32.1 18 48.2 12
-
10
24.5 24 32.7 18 49.0 12
-
15
24.9 24 33.2 18 49.8 12
-
20
25.3 23 33.8 17 50.7 11
-
25
25.7 23 34.3 17 51.5 11
9 Table A
Installation and operator’s manual Page 60 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
Description
Value
PVI – 2000-OUTD
Nominal input voltage 360Vdc
Input voltage range from 90 Vdc to 600 Vdc
Input voltage, MPPT operating
range
from 90 Vdc to 580 Vdc
Input voltage, MPPT range at
full power
from 220 Vdc to 530 Vdc
Minimum input volta ge for grid
connection
200Vdc
Max. short circuit current 12 Adc
Max. operating input current 10 Adc
Max. input power 2200 W
PV Ground fault protection Ground fault detection and shut off provided
Array configuration One array
NOTE: If the input current supplied by the phot ovoltaic field connected to
the inverter is above the max. value and the input voltage is within the
allowed range, the inverter is not damaged.
Installation and operator’s manual Page 61 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
8.2 Output Values
Description
Value
PVI – 2000-OUTD
Nominal output power 2000 W
Grid voltage maximum range from 200 to 270 Vac
Nominal grid voltage 230 Vac
Grid voltage, operating range in
compliance to AS4777
from 89% to 115% of nominal voltage
(from 205 to 264Vac for V
nom
=230Vac)
Grid frequency, maximum range from 45 to 55 Hz
Grid frequency, nomi nal 50 Hz
Grid frequency, operating range in
compliance to AS4777
from 47.1 to 52.9 Hz
Current output, nominal 9 Arms
Output over current protection 11 Arms
Installation and operator’s manual Page 62 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
8.3 Grid protection characteristics
Anti islanding protection
In compliance to:
- AS4777.3-2005
8.4 General characteristics
Description
Value
PVI – 2000-OUTD
Maximum efficiency 96%
Internal consumption during stand-by < 8 W
Internal consumption during night time < 0.30 W
Operating ambient temperature
from -25°C to +60°C (from -13°F to
140°F)
Enclosure protection leve l IP65 / Nema 4X
Audible Noise
< 30dBA @1m with fans off
< 50 dBA @1m with fans max speed
Dimensions (H x W x D): 420 x 310 x 144 mm
Weight 12 kg
Installation and operator’s manual Page 63 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
8.5 Power Derating
To ensure a safe operation of the inverter under any temperature and electrical
condition, the unit will automatically derate the power to be supplied to the grid.
Power derating can occur on one of the following occasions:
Power Derating due to Ambient Temperature
Natural convection coolin g system of Aurora guarant ees high reliabili ty and keeps the
internal components within the optimal operating temperature range.
Under severe operating conditions (when ambient temperature is very high), the unit
may need to reduce the power supplied.
Several environmental factors can influence the operating temperature of the unit,
such as ambient air temperature, airflow, exposure to sun radiation, input voltage
and power, orientation of the hea tsink fins, etc.
AURORA is able to supply the maximum rated output power (i.e. 2.000W) with
ambient temperatures up to 40°C, in case the unit is not directly exposed to solar
radiation or heat sources that may cause a further incr ease of the internal
temperature.
Installation and operator’s manual Page 64 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
Power Derating due to Input Voltage
The graph shows the automatic derating of the power supplied when input voltage
values are too high or too low.
Power Derating
(max input current)
Non Operating Range
Voltage Derating Range
Non Operating Range
Fig. 18
Installation and operator’s manual Page 65 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
********** CERTIFICATES OF COMPLIANCE ********
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