Aurora PVI-3600-AU
®
AURORA
Photovoltaic Inverters
INSTALLATION AND OPERATOR’S
MANUAL
Model number: PVI-3600-AU
Rev. 1.0
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
Page 2 of 84
REVISION TABLE
Document
Revision
Author
Date
Change description
1.0
Gianluca
Pieralli
30/09/2008
First release of the document
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
PVI-3600-AU Rev.: 1.0)
Page 3 of 84
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 to
highlight potential safety 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 symbols:
Equipment grounding conductor (Main grounding protective earth,
PE)
Alternate Current (Ac) value
Direct Current (Dc) value
Phase
Grounding (Earth)
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Page 4 of 84
USEFUL INFORMATION ON SAFETY STANDARDS
¾
¾
¾
¾
¾
FOREWORD
The installation of AURORA must be performed in full compliance with national
and local standards and regulations.
AURORA has no internal user serviceable parts other than fuses.
For any maintenance or repair please contact the nearest authorized repair centre.
Please contact your reseller if you need to know the nearest authorised repair
centre.
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.
The connection to the distribution grid must be done only after receiving approval
from the distribution utility as required by national and state interconnection
regulations, and can be done only by qualified personnel.
Cover the photovoltaic panels with dark opaque sheets before they are connected
to avoid any chance of high voltages appearing at the connecting wire
terminations.
Installation and operator’s manual
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Page 5 of 84
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 the necessary protections, 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 health 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.
Installation and operator’s manual
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Page 6 of 84
OPERATION
Systems with inverters shall be installed in accordance with applicable electrical safety
and personnel safety requirements. After the inverter has been disconnected 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 recommendations.
SAVE ALL DOCUMENTS IN A SAFE PLACE!
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
Page 7 of 84
PVI-3600-AU
This document applies to the above-mentioned inverters, only
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
Installation and operator’s manual
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Page 8 of 84
CONTENTS:
1
FOREWARD ............................................................................... 11
1.1
2
PHOTOVOLTAIC ENERGY ............................................... 11
SYSTEM DESCRIPTION.......................................................... 12
2.1
MAIN ELEMENTS OF A PV SYSTEM: “STRINGS AND
ARRAYS” ......................................................................................... 13
2.2
DATA TRANSMISSION AND CHECK .......................................... 15
2.3
AURORA TECHNICAL DESCRIPTION ..................................... 15
2.4
PROTECTIVE DEVICES ............................................................. 17
2.4.1
Anti-Islanding ................................................................ 17
2.4.2
Panel Ground Fault....................................................... 17
2.4.3
Further Protective Devices............................................ 18
3
INSTALLATION ........................................................................ 19
3.1
3.2
3.3
3.4
3.5
3.6
PACKAGE INSPECTION ............................................................ 19
PACKAGE CHECK LIST............................................................ 20
CHOOSING INSTALLATION LOCATION ..................................... 21
WALL MOUNTING .................................................................. 22
PRELIMINARIES TO ELECTRICAL CONNECTIONS ..................... 24
ELECTRICAL CONNECTIONS .................................................... 28
4
START-UP ................................................................................... 32
5
MONITORING AND DATA TRANSMISSION...................... 33
5.1
USER INTERFACE MODE ......................................................... 33
5.2
AVAILABLE DATA .................................................................. 34
5.2.1
Real time data................................................................ 34
5.2.2
Internally Logged Data ................................................. 35
5.3
LED INDICATORS ................................................................... 36
5.4
MESSAGES AND ERROR CODES............................................... 40
5.5
LCD DISPLAY ........................................................................ 43
5.5.1
Statistics menu ............................................................... 46
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5.5.1.1 Total...........................................................................47
5.5.1.2 PARTIAL ..................................................................48
5.5.1.3 TODAY .....................................................................49
5.5.1.4 LAST 7 DAYS ..........................................................50
5.5.1.5 LAST MONTH..........................................................51
5.5.1.6 LAST 30 DAYS ........................................................52
5.5.1.7 LAST 365 DAYS ......................................................53
5.5.1.8 USER PERIOD..........................................................54
5.5.2
Settings menu .................................................................55
5.5.2.1 ADDRESS .................................................................56
5.5.2.2 DISPLAY SETTING.................................................56
5.5.2.2.1 LIGHT..................................................................57
5.5.2.2.2 CONTRAST..........................................................58
5.5.2.2.3 BUZZER...............................................................58
5.5.2.2.4 GRAPH SET.........................................................59
5.5.2.3 SERVICES ................................................................59
5.5.2.4 CHANGE PW............................................................59
5.5.2.5 CURRENCY..............................................................60
5.5.2.6 CLOCK......................................................................61
5.5.2.7 LANGUAGE .............................................................62
5.5.3
Information menu...........................................................63
6
6 DATA CHECK AND COMMUNICATION..........................64
6
6 DATA CHECK AND COMMUNICATION..........................65
6.1
6.2
6.3
RS-232 AND RS-485 SERIAL LINK ..........................................66
ADDRESS SELECTION ..............................................................70
MEASUREMENT ACCURACY....................................................71
7
TROUBLESHOOTING ..............................................................73
8
TECHNICAL FEATURES.........................................................75
8.1
8.2
INPUT VALUES ........................................................................75
OUTPUT VALUES ....................................................................78
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8.3
8.4
8.5
Page 10 of 84
GRID PROTECTION CHARACTERISTICS..................................... 79
GENERAL CHARACTERISTICS .................................................. 79
POWER DERATING .................................................................. 80
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PVI-3600-AU Rev.: 1.0)
1
Page 11 of 84
FOREWARD
This document contains a technical description of the AURORA photovoltaic inverter
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 reducing pollutant levels. This may be possible 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 energy 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
Page 12 of 84
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 this energy and feed it back to the distribution grid, this energy shall be
turned into alternating (Ac) current. AURORA does this 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 distribution 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 the photovoltaic 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 national and local standards and regulations the produced energy can be
sold to the grid or credited to the user for future consumption.
Installation and operator’s manual
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2.1
Page 13 of 84
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 composed of a certain number of arrays, connected
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.
PV Cell
+
PV Panel
PV String
+
+
_
_
_
Fig.2 Array Composition
PV Array
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Page 14 of 84
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.
WARNING: String voltage shall not exceed 600 Vdc for any reason, to
prevent any damage to the equipment
The total current of an array must also be within the capability limits of the inverter.
The 3600W model of AURORA is capable of handling 2 separate arrays. For
AURORA the maximum current from each input can be 10Adc.
In case the photovoltaic system exceeds the capabilities of a single AURORA inverter,
additional inverters can be added to the system, each connected to a suitable section of
the photovoltaic field on the Dc side, and to the grid on the Ac side.
Each AURORA inverter will work independently from the others and will push to the
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 factors and considerations, such as type and model of panels,
available area, location, energy targets, as well as on good design practices.
Power-One provides a system configuration tool on its website (www.power-one.com)
that can assist in modelling the system.
Fig.3 Simplified diagram of a photovoltaic system
Installation and operator’s manual
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2.2
Page 15 of 84
Data transmission and check
In case multiple inverters are used, they can be monitored remotely by using an
advanced communication system based on the 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 diagram. The main blocks are given by the input
Dc-Dc converters (also known as “booster”) and the output inverter. Both the Dc-Dc
converters and the output inverter work at high switching 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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Page 16 of 84
The block diagram shows the model AURORA PVI-3600 with its two independent
input Dc-Dc converters. Each Dc-Dc converter is dedicated to a separate array with
independent maximum power point tracking (MPPT) control. This means that the two
separate arrays can be installed in different positions and orientation. Each array has
its own MPPT control circuit.
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.
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
2.4
2.4.1
Page 17 of 84
Protective devices
Anti-Islanding
The Aurora inverter will automatically disconnect from the utility grid when the utility
grid is out of range or when the inverter shuts down due to a fault condition, in order
to guarantee protection for persons operating on the utility grid, in compliance with the
national standards.
AURORA PVI-3600 is equipped with an advanced Anti-Islanding protection certified
according to the following standards:
• AS4777.3-2005
2.4.2
Panel Ground Fault
This version of Aurora is designed for connection to floating Photovoltaic arrays 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 connected 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 fault is detected and indicates the 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
Page 18 of 84
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 operational limits;
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
Page 19 of 84
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, dents 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 detected, call the delivering carrier to determine the appropriate action.
They may require an inspection. Save all shipping material for the inspector to
see!
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Page 20 of 84
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
AURORA Photovoltaic Inverter
Mounting bar
Bag containing a wall fixing kit
composed of 3 stainless steel
screws, 3 blocks and a TX10
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.
Copy of this manual
Certificate of warranty
CD-Rom with communication
software
Quantity (No.)
1
1
1
1
1
1
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PVI-3600-AU Rev.: 1.0)
3.3
Page 21 of 84
Choosing installation location
The location for the installation of AURORA should be selected in accordance to the
following recommendations:
¾
This model of AURORA is designed for indoor environments; the IP21
protection prevents damages to the unit in case of vertical water dropping.
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, full 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 surface with
materials that are flammable or sensitive to high temperature (wallpaper,
fabrics, wood, etc.)
200mm (8”)
200mm
(8”)
200mm
(8”)
200mm (8”)
Fig.5 Installation location
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PVI-3600-AU Rev.: 1.0)
3.4
Page 22 of 84
Wall Mounting
A set of standard expansion stainless steel screws and an aluminium bracket, onto
which the inverter will be fixed, are provided to mount 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.
Three holes are needed to mount AURORA to the wall: two on the top for the bracket,
and one on the bottom to secure the inverter to the wall
1) Open the panel located in the lower part of AURORA, using the TX10 tap wrench
provided to loosen the screw which locks the panel, making it slide downwards
(Fig. 6). Once you have removed the panel, at the centre of the uncovered area,
you will see a hole for the fixing screw.
Fig. 6 How to open the panel
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Page 23 of 84
2) Use the metal support bar to determine where to drill the wall. Drill the holes,
install the expansion screws and mount the support bar against the wall.
3) Hang AURORA to the metal support in order to determine the location of the
third hole, remove AURORA, drill the third hole, install the expansion screw,
hang AURORA to the support bar again and secure it with the third screw
(Fig. 7)
4) Mount the panel again and close it by using the TX10 tap wrench provided.
Fig. 7 Location for the third screw
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PVI-3600-AU Rev.: 1.0)
3.5
Page 24 of 84
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 skilled operators and after having received
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, regarding the photovoltaic system:
¾ Maximum Dc array input voltage for each MPPT circuit: 600Vdc in
any condition.
¾ Maximum Dc array input current for each MPPT circuit: 10Adc in any
condition.
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Page 25 of 84
WARNING: Verify the national regulations and the local standards, to
make sure that your installation 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.
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 them
in the system.
Recommended ratings for the Ac over-current protection device is maximum
20A, 240V. Recommended ratings for the Ac over-current protection device
is maximum 20A, 240V.
DC
Disconnect
PV
Array
Fuse rating
AC
Disconnect
Fuse rating
20A 240Vac
Grid
Load
Center
20A, 600V
Wire in accordance with
NEC Section 690 and
applicable local codes
Fig.8 General wiring diagram
WARNING: always open the AC disconnect breaker to disconnect
AURORA from the grid before opening the DC disconnect.
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Page 26 of 84
WARNING: All power wires connecting AURORA must have a section of
at least 14 AWG (2.5mm2) 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 mm2 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 mm2 with an external diametre of max 16,2mm.
At the bottom of the inverter, from left to right, (Fig. 9 and Fig. 10) there are:
¾
¾
¾
2 pairs of multicontact connectors for connecting the two photovoltaic arrays
1 Binder connector for connection to the grid
1 closed hole with watertight cap. This hole may be used for connecting a serial
wire for data transmission, once you have removed the cap and replaced it with
the wire gland provided.
Fig. 9 Connections at the bottom of the inverter
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Page 27 of 84
Fig. 10 Connector inputs
WARNING: When making the electrical connections, follow this exact
procedure to avoid exposure to dangerous voltage. Each step of the
procedure is explained in the following paragraphs. To disconnect
AURORA repeat the procedure in opposite order.
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PVI-3600-AU Rev.: 1.0)
3.6
Page 28 of 84
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 impedance wires to connect 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 the Ac disconnect switch
2) Enter the wire in the Binder counterpart connector provided, taking care
to respect the indications present on the plastic near the terminal blocks
(as indicated in Fig. 11): terminal block 1 for Neutral, terminal 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. 11 Binder connector
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Page 29 of 84
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 AURORA, please apply the Ac connection
procedure to the terminals of the metre.
Step 4/4: Connect AURORA to the Dc disconnect switches
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, that the polarity value and the
voltage value allowed between positive and negative contacts are correct.
Array connection: Follow this procedure for each array.
1) Mount the positive conduit between AURORA and the Dc disconnect.
2) Secure the conduit to the counterpart multicontact connector (not
provided)
3) Connect the positive conduit to AURORA
4) Mount the negative conduit between AURORA and the Dc disconnect.
5) Secure the conduit to the counterpart multicontact connector (not
provided)
6) Connect the negative conduit to AURORA
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Page 30 of 84
WARNING: If the system has one array only, and the maximum current
and power from the array are less than the maximum capacity of an
AURORA section, i.e.: 10Adc / 2000W, the array can be connected to
section 1 only. In order to avoid problems in the measurements of the
isolation parameters, Power-One recommends to short circuit the inputs of
section 2 via an external wire, as shown in Fig. 12
Fig.12: Short circuit
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Page 31 of 84
PV INPUT 1
-IN1 -IN1
+IN1 +IN1
PV INPUT 2
P.E.
-IN2 -IN2
+IN2 +IN2
WARNING: In case your photovoltaic system has one array only, and its
current exceeds the current capability of one input section (10A) or the
maximum power (2000W), you have to parallel the input terminal sections
that you can access by removing the panel. The wires to carry out the
jumpers must have section 2.5mm2 (AWG14) and have to be connected
between terminal blocks–IN1 e –IN2 respectively, for the negative and
between terminal blocks +IN1 e +IN2 for the positive, as shown in Fig.13.
Moreover, you will need to configure the inverter to work with the two input
sections wired in parallel (one array) via the communication software
provided on CD-Rom.
+
-
Fig. 13 Paralleling the two input sections
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
4
Page 32 of 84
START-UP
WARNING: Do not lay any object on AURORA during operation.
To start AURORA up, close the two external disconnect switches, and
precisely that of the PV panels and that of the grid. The two disconnect switches can
be closed in any order. Once the two switches have been closed, the inverter, if there
are not irregularities, AURORA will start the grid connection sequence, indicated by
the flashing green LED on the display and by the messages shown on the LCD
display. The sequence can last from a minimum 30 seconds to a few minutes,
depending on the conditions of the grid and photovoltaic field. Once the connection
sequence has been completed, AURORA is put into operation. The green LED lit
continuously indicates the correct operation.
After the start-up, AURORA operates automatically and is maintenance-free.
When solar radiation is not high enough to provide power to export to the grid
AURORA will disconnect from the grid and enter the stand-by mode, ready to connect
again once the solar irradiation will be sufficient.
During the night AURORA will remain off ready to start up again automatically the
following morning.
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
5
5.1
Page 33 of 84
MONITORING AND DATA TRANSMISSION
User Interface Mode
WARNING: The RS-485 wire must ensure a protection of at least 600V.
¾
¾
¾
AURORA inverter can provide operational data in the following ways:
LED indicators
Operational data on the LCD display
Data transmission on a dedicated serial RS-485 line or RS-232 line. The data can
be collected by a PC or data 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
PVI-3600-AU Rev.: 1.0)
5.2
Page 34 of 84
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
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
Grid frequency
Power transferred to the grid
Voltage of PV array 1
Current of PV array 1
Voltage of PV array 2
Current of PV array 2
Heat sink temperature
Serial Number Part Number
Manufacturing week
Firmware revision code
Energy produced so far in the day
Leakage Current
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
5.2.2
Page 35 of 84
Internally Logged Data
AURORA stores internally the following data:
¾
¾
¾
Lifetime counter of grid connection time
Lifetime counter of energy transferred to the grid
Energy transferred to the grid every 10 seconds for the last 8640 periods of 10
seconds (which on average cover more than 2 days logged data)
¾ Partial counter of grid connection time (the counter start time can be reset by
using the AURORA Communicator 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 with 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
PVI-3600-AU Rev.: 1.0)
5.3
Page 36 of 84
LED Indicators
Above the display there are three LED indicators: one to indicate whether the inverter
is operating regularly, one to signal the presence of faults and one to indicate a ground
fault.
1. The green “POWER” LED indicates that AURORA is working correctly.
When the unit is powered on this 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 grid and the LED is on. If, on the 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 to
restart the connection 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
PVI-3600-AU Rev.: 1.0)
Page 37 of 84
1
2
3
Fig.14 LED location
KEY:
LED on
LED flashing
LED off
Any of the above conditions
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
1
2
3
4
5
6
7
Page 38 of 84
LEDs Status
green:
yellow:
red:
Operational Status
Aurora self-disconnection
during nighttime
Remarks
Input voltage less than 90
Vdc at both inputs
green:
yellow:
red:
Aurora initialization,
settings loading and
waiting for grid check
It is a transition status while
operating conditions are
checked.
green:
yellow:
red:
Aurora is powering the
grid
Standard machine operation
(search of max. power point
or constant voltage).
green:
yellow:
red:
System insulation device
faulty
Ground leakage found
green:
yellow:
red:
Defect – fault!!!
The Fault can be inside or
outside the machine. See the
alarm appearing on the LCD.
green:
yellow:
red:
Installation phase: Aurora
is disconnected from
grid.
During installation, it refers to
set-up of the address for RS485 communication.
green:
yellow:
red:
Grid disconnection
Indicates a missing grid
condition
NOTE: Every inverter status signalled by the corresponding LED turning
on or blinking, is also identified on AURORA LCD display by a message
concerning the operation being carried out or to the defect/fault found (see
following sub-sections).
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
Page 39 of 84
G
Y
R
1) Nighttime mode
AURORA disconnected during night time; this occurs when input power
is too low to feed the inverter.
G
Y
2) AURORA initialization and grid check
Initialization in progress: input power sufficient to feed the inverter;
AURORA is verifying start-up conditions (for instance: input voltage
value, insulation resistance value, etc.) and grid check routine is
launched.
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.
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 between 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 reset the fault indication by pressing
the multi-function ESC key at the 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.
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 found appears on the LCD.
R
G
Y
R
G
Y
R
G
Y
R
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
G
Y
R
G
Y
R
5.4
Page 40 of 84
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.
7) Grid disconnection
If a grid failure event occurs while the system is regularly operating, the
yellow LED turns on steady.
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 displayed.
MESSAGES identify the AURORA current status; so they do not relate to faults and
nothing has to be done. The message will disappear as soon as standard conditions 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
PVI-3600-AU Rev.: 1.0)
Alarm n.
Page 41 of 84
1
Sun Low
Warning
code
W001
2
3
4
5
Input OC
Input UV
Input OV
Sun Low
//
W002
//
W001
E001
//
E002
//
6
7
8
9
10
11
12
13
14
15
16
17
Int.Error
Bulk OV
Int.Error
Out OC
Int. Error
Int.Error
Int.Error
Grid Fail
Int.Error
Int.Error
DC/DC Fail
Wrong Mode
//
//
//
//
//
//
//
W003
//
//
//
//
E003
E004
E005
E006
E007
E008
E009
//
E010
E011
E012
E013
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
---------Over Temp.
Cap. Fault
Inv. Fail
Int.Error
Ground F.
---------Int.Error
DC/DC Fail
Int.Error
Int.Error
Int.Error
Int.Error
Int.Error
Grid OV
Grid UV
Grid OF
Grid UF
Z Grid HI
Int.Error
----------Int.Error
//
//
//
//
//
//
//
//
//
//
//
//
//
//
W004
W005
W006
W007
W008
//
//
//
//
E014
E015
E016
E017
E018
//
E019
E012
E020
E021
E019
E022
E023
//
//
//
//
//
E024
E025
E026
40
Int.Error
//
E027
Message
Error
code
//
Description
INPUT
VOLTAGE
UNDER
THRESHOLD (when off)
Input Over current
Input Undervoltage
Input Overvoltage
Input voltage under threshold (when
off)
No parametres
Bulk Overvoltage
Communication error
Output Overcurrent
IGBT Sat
Bulk Undervoltage
Internal error
Incorrect grid parametres
Bulk Low
Ramp Fail
DcDc error detected by the inverter
Incorrect input setting (single instead
of dual)
-------------Internal overtemperature
Bulk capacitor fail
Inverter fail detected by the DcDc
Start Timeout
Ileak fail
--------------Ileak sensor fail
DcDc error detected by the inverter
inverter relay fail
DcDc relay fail
Ileak sensor fail
Autotest Timeout
Dc-Injection Error
Output Overvoltage
Output Undervoltage
Output Overfrequency
Output Underfrequency
Z grid out of range
Internal error
Low insulation resistance ( log only )
Wrong reference voltage (VRef)
Wrong grid voltage measurement (
VGrid )
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
Page 42 of 84
41
Int.Error
//
E028
42
Int.Error
//
E029
43
Int.Error
//
E030
44
45
46
47
Int.Error
Int.Error
Fan Fail
Int.Error
//
//
W010
//
E031
E032
//
E033
Wrong grid frequency measurement (
FGrid )
Wrong grid impedance measurement (
ZGrid )
Wrong leakage current measurement
(ILeak)
Wrong voltage measurement V
Wrong current measurement I
Defective Fan ( log only )
Internal temperature
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
5.5
Page 43 of 84
LCD Display
The display monitors the inverter status and collects statistical data that allows
assessing the system performances. On the right side of the display there are 4 buttons
(from bottom to top):
9 The ENTER button allows to confirm the user selection
9 The “UP” and “DOWN” buttons, allow you to browse through the various menus
and to enter alphanumeric data required.
9 The “ESC” button allows going back to the previous menu.
Upon power-on the Power-One logo appears on the display.
After a few seconds the following display image will appear:
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
Page 44 of 84
While Aurora is measuring the grid and photovoltaic field characteristics the following
measurements are shown:
Grid voltage
Vac
Grid frequency
Freq
Photovoltaic panel isolation resistance
Riso
When the measurement is within the normative limits the symbol V will appear on the
left.
This screen image remains on until the inverter is ready to connect to the grid. A
progress bar will appear in the lower part of the screen.
Once the inverter is connected to the grid the following screen will appear on the
display:
In the upper right corner there is an icon indicating the solar irradiation condition: it
can show either a little sun, or a cloud or a sun covered by a cloud.
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
Page 45 of 84
In the upper part of the display are shown the most important parameters of the
inverter; using the UP and DOWN buttons it is possible to visualise the following
parametres:
• EDay: Energy exported to the grid during the current day.
• EPar: Energy partial counter (user settable).
• ETot: counter of the total energy exported to the grid
• $Day: value of the energy produced during the day (The currency and the
energy value per KW-h can be set by the user)
• Pout: power exported to the grid;
• Vout: Grid Voltage;
• Iout: current exported to the grid;
• Freq: grid frequency;
• VP1: Voltage for array 1;
• VP2: Voltage for array 2;
• IP1: current from array 1;
• IP2: current from array 2;
• Pin1 power from array 1;
• Pin2: power from array 2;
• Riso: isolation resistance of the Photovoltaic input circuit.
• Tamb: Ambient temperature.
In the lower part of the display is shown the graph of the power exported to the grid
during the day from 6AM to 8 PM. (the time scale may be modified by the user).
A window on the right-hand-side of the graph will show the power exported to the
grid.
In the lower part of the display are shown the default date and time. Any variations
due to time zones or daylight saving time must be made manually by the user.
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
Page 46 of 84
By pressing “ESC” you access the “Main Menu” with three different sections:
9 STATISTICS
9 SETTINGS
9 INFORMATION
Select the desired section by pressing UP and DOWN and confirm your selection by
pressing ENTER. This way you access the relative sub-menu. Press ESC to return to
the main menu.
5.5.1
Statistics menu
The STATISTICS submenu displays a series of data regarding different intervals of
time:
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
5.5.1.1
Page 47 of 84
Total
Press the UP or DOWN button until you reach TOTAL. By pressing ENTER the
display will show the following lifetime data regarding the inverter:
• Time: total time during which the inverter has been operating, whether
connected to the grid or not (h)
• Energy: Energy exported to the grid (kWh)
• Saving: Value of the energy produced, the currency and the energy cost per
kWh can be set by the user
• CO2: Quantity of CO2 saved compared to the energy produced using fossil
fuels (kg).
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
5.5.1.2
Page 48 of 84
PARTIAL
Press the UP or DOWN button until you reach TOTAL. By pressing ENTER the
display will show the following data referring to a partial interval of time resettable by
the user:
• Time: partial time during which the inverter, has been operating, whether
connected to the grid or not (h)
• Energy: Energy exported to the grid (kWh)
• Saving: Value of the energy produced, the currency and the energy cost per
kWh can be set by the user
• CO2: Quantity of CO2 saved compared to the energy produced using fossil
fuels (kg).
Press ENTER to reset the counter
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
5.5.1.3
Page 49 of 84
TODAY
Press the UP or DOWN button until you reach TOTAL. By pressing ENTER the
display will show the following data referring to the day in progress:
• Energy: Energy exported to the grid (kWh)
• Saving: Value of the energy produced, the currency and the energy cost per
kWh can be set by the user
• CO2: Quantity of CO2 saved compared to the energy produced using fossil
fuels (kg).
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
5.5.1.4
Page 50 of 84
LAST 7 DAYS
Press the UP or DOWN button until you reach TOTAL. By pressing ENTER the
display will show the following data referring to the last week:
• Energy: Energy exported to the grid (kWh)
• Saving: Value of the energy produced, the currency and the energy cost per
kWh can be set by the user
• CO2: Quantity of CO2 saved compared to the energy produced using fossil
fuels (kg).
• Graph of the energy produced in the past 7 days.
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
5.5.1.5
Page 51 of 84
LAST MONTH
Press the UP or DOWN button until you reach TOTAL. By pressing ENTER the
display will show the following data referring to the past calendar month:
• Energy: Energy exported to the grid (kWh)
• Saving: Value of the energy produced, the currency and the energy cost per
kWh can be set by the user
• CO2: Quantity of CO2 saved compared to the energy produced using fossil
fuels (kg).
• Graph of the energy produced in the past month.
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
5.5.1.6
Page 52 of 84
LAST 30 DAYS
Press the UP or DOWN button until you reach TOTAL. By pressing ENTER the
display will show the following data referring to the past 30 days:
• Energy: Energy exported to the grid (kWh)
• Saving: Value of the energy produced, the currency and the energy cost per
kWh can be set by the user
• CO2: Quantity of CO2 saved compared to the energy produced using fossil
fuels (kg).
• Graph of the energy produced in the past 30 days
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
5.5.1.7
Page 53 of 84
LAST 365 DAYS
Press the UP or DOWN button until you reach TOTAL. By pressing ENTER the
display will show the following data referring to the past year:
• Energy: Energy exported to the grid (kWh)
• Saving: Value of the energy produced, the currency and the energy cost per
kWh can be set by the user
• CO2: Quantity of CO2 saved compared to the energy produced using fossil
fuels (kg).
• Graph of the energy produced in the past 365 days
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
5.5.1.8
Page 54 of 84
USER PERIOD
Press the UP or DOWN button until you reach TOTAL. By pressing ENTER the
display will show a screen for setting the period of reference for displaying the data.
You can modify the days and the months by using the UP and DOWN buttons and
confirming by pressing ENTER.
A second screen image will appear containing the following data referring to the
selected period of time:
• Energy: Energy exported to the grid (kWh)
• Saving: Value of the energy produced, the currency and the energy cost per
kWh can be set by the user
• CO2: Quantity of CO2 saved compared to the energy produced using fossil
fuels (kg).
• Graph of the energy produced in the selected period of time.
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
5.5.2
Page 55 of 84
Settings menu
By selecting the SETTINGS menu from the main menu, a screen image requiring a
password will appear.
The password is composed of 4 numeric digits (by default “0000”) which can be set by
the user as described below. Each numeric digit is selected by pressing UP and
DOWN and confirmed by pressing ENTER. By pressing “ESC” you can go back and
modify the previously selected digit.
If the password is correct, the menu for the parametre configuration will appear after
the last ENTER:
NOTE: If the password is incorrect, the message “ERROR – INCORRECT
PW” will appear for approximately 3 seconds.
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
5.5.2.1
Page 56 of 84
ADDRESS
Starting from the SETTINGS menu, press UP and DOWN until you reach ADDRESS.
By pressing ENTER, the window for selecting the address for the RS485 s display
(values between 0 and 31).
Use the UP and DOWN buttons to select the value to be entered and press ENTER to
confirm.
To return to the SETTINGS submenu, press ESC.
5.5.2.2
DISPLAY SETTING
Starting from the SETTINGS menu, press UP and DOWN until you reach
DISPLAY SETTING. By pressing ENTER the window for setting the display mode
will appear on the display.
Use the UP and DOWN buttons to select the display mode and press ENTER to
confirm. To return to the SETTINGS submenu, press ESC.
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
Page 57 of 84
5.5.2.2.1
LIGHT
From the DISPLAY SETTING menu, select the LIGHT mode using the UP and
DOWN buttons. By pressing ENTER, the window for setting the brightness of the
display will appear on the display.
Use the UP and DOWN buttons to select the parametre to be modified and press
ENTER to confirm.
Mode: Illumination can be set on ON, OFF or AUT
Intensity: The light intensity can be also modified using the UP and DOWN buttons
(values from 0 to 9).
To return to the DISPLAY SETTING submenu, press ESC.
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
Page 58 of 84
5.5.2.2.2
CONTRAST
From the DISPLAY SETTING menu, select the CONTRAST mode using the UP and
DOWN buttons. By pressing ENTER, the window for setting the contrast of the
display will appear.
Use the UP and DOWN buttons to modify the value (from 0 to 9) and press ENTER to
confirm.
To return to the DISPLAY SETTING submenu, press ESC.
5.5.2.2.3
BUZZER
From the DISPLAY SETTING menu, select the BUZZER mode using the UP and
DOWN buttons. By pressing ENTER, the window for enabling or disabling the sound
when you press any key.
Use the UP and DOWN buttons to activate or deactivate the sound and press ENTER
to confirm.
To return to the DISPLAY SETTING submenu, press ESC.
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
Page 59 of 84
5.5.2.2.4
GRAPH SET
From the DISPLAY SETTING menu, select the GRAPH SET mode using the UP and
DOWN buttons. By pressing ENTER, the window for setting the interval of time to
which the graph in the MAIN MENU refers to, will appear on the display.
Use the UP and DOWN buttons to modify the dates shown on the display and press
ENTER to confirm.
To return to the DISPLAY SETTING menu, press ESC.
To return to the SETTINGS menu from the DISPLAY SETTINGS submenu, press
ESC.
5.5.2.3
SERVICES
NOTE: The service menu is for qualified and authorised technicians only.
Therefore, no information on the use of this menu will be provided in this
user guide.
5.5.2.4
CHANGE PW
From the SETTINGS menu, use the UP and DOWN buttons to select the NEW PW
mode in order to modify the password to access the menu. By pressing ENTER, the
screen image requiring the new password will appear.
Use the UP and DOWN buttons to enter the new password and press ENTER to
confirm.
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
5.5.2.5
Page 60 of 84
CURRENCY
From the SETTINGS menu, use the UP and DOWN buttons to select the
CURRENCY mode. By pressing ENTER, the window for setting the monetary value
of a Wh will appear, in order to quantify the energy saving.
Name: currency name (3 characters)
Val./kWh: value for kWh
Use the UP and DOWN buttons to modify the value and press ENTER to confirm.
To return to the SETTINGS menu, press ESC.
$
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
5.5.2.6
Page 61 of 84
CLOCK
From the SETTINGS menu, use the UP and DOWN buttons to select the CLOCK
mode. By pressing ENTER, the screen image for setting the current time and date will
appear on the display.
Use the UP and DOWN buttons to modify the data and press ENTER to confirm.
Upon confirmation of the last datum, the new data will be stored and the SETTINGS
menu will appear.
To return to the SETTINGS menu without saving the data, press ESC.
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
5.5.2.7
Page 62 of 84
LANGUAGE
From the SETTINGS menu, use the UP and DOWN buttons to select the
LANGUAGE mode. By pressing ENTER, the window for setting the language will
appear on the display.
Use the UP and DOWN buttons to select the language of the display and press ENTER
to confirm.
To return to the SETTINGS menu without saving the data, press ESC.
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
5.5.3
Page 63 of 84
Information menu
By selecting the INFORMATION menu from the main menu, a screen image will
appear containing machine identification information. These data are useful for the
technical assistance to identify the product and solve any problems.
• Product Id: provides the production identification code of the inverter
• Serial number: provides the serial number, the week and the year of
production
• Firmware
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
Page 64 of 84
A summary diagram of the display functions is shown in the figure below:
POWER-ONE
MAGNETEK
6
Connecting…
Monitor Menu
[Esc]
Main Menu
[Info]
[Esc]
[Settings]
[Statistics]
Informations
[Esc]
Statistics
Password
Part Number
Serial Number
[Wrong PW]
Wrong PW
Lifetime
[Esc]
Settings
Firmware
Set new
address
Partial
Display Set
Today
Set Light
Mode
Service
Last 7 Days
Contrast
New PW
Set buzzer
Currency
Set graph
Last Month
Last 30 days
Set Time/Date
Last 365 days
Set User
period
Language
User period
Intensity
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
Page 65 of 84
6 DATA CHECK AND COMMUNICATION
AURORA is able to transmit the measured data and the error and warning messages
through 2 communication devices as illustrated in Fig. 15.
These devices are the RS-485 and the RS-232 serial ports, both available on this model
of AURORA.
.
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
6.1
Page 66 of 84
RS-232 and RS-485 serial link
The RS-232 and RS-485 serial ports both refer to the same communication hardware
and therefore, may not be used simultaneously.
The RS-232 serial port allows the connection between one single inverter and a PC
using a 9-pole serial wire available in the shops. The serial connector is a female DB-9
type and is located in the bottom of the unit close to the display (Fig. 15).
Fig. 15 Position of the DB-9 connector
The RS-485 serial port uses two wires for signals plus a third wire for signal
grounding. The wire must be inserted in the wire gland provided, which must be
mounted at the bottom of the unit, instead of the watertight cap as shown in Fig. 16.
To make the installation easier, a 2-hole seal for wire gland is also provided to run two
wires in case more units are connected together as described below. If the installer
prefers to use this kind of seal and only one wire is used, we recommend closing the
unused hole with the plastic cap provided.
The wires are then run to the RS-485 screw terminal blocks and connected as shown in
Fig.17
¾ Signal wires must be connected to +T/R and –T/R terminals
¾ Grounding wire must be connected to the RTN terminal
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
Page 67 of 84
Fig.16: RS-485 wiring
OFF
Switch
Terminal Line
3
S1
-TR
TERMIN
RTN
2
+TR
ON
1
RS485
Fig. 17 RS-485 serial link terminal blocks
The RS-485 serial port can be used to connect a single AURORA inverter or more inverters
connected together daisy-chain style. The maximum number of inverters than can be
connected daisy-chain style is 31. The maximum length recommended for the RS-485 wire is
1200 metres.
In the event of multiple inverters connected daisy-chain style, you must assign an address to
each unit. Moreover, the last inverter of the chain must have the line termination contact
activated (dip-switch S1 in Fig.17 must be taken to the ON position).
By default each AURORA has address two (2) and the S1 dip switch is in the OFF
position.
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
Page 68 of 84
The following diagram shows how to connect multiple units daisy-chain style.
Fig.18 Multiple units connection daisy-chain style
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
Page 69 of 84
NOTE: When using the RS-485 link there can be no more than 31 inverters
connected on the same link. Although you are free to choose any address
between 2 and 63, we recommend using 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.
Fig.19: Data communications for AURORA
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
6.2
Page 70 of 84
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 assign 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 the Easy Controller display unit.
• The RS-485 serial link uses addresses from 2 to 34
NOTE: To modify the address of the unit please refer to paragraph 5.5.2
“Settings menu”.
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
6.3
Page 71 of 84
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.
Data
Unit
Resolution
Max error
Display Measur
ement
Output voltage PV
N°1
VP1
Vdc
1V
1/1000
2%
Output voltage PV
N°2
VP2
Vdc
1V
1/1000
2%
Output current PV
N°1
IP1
Adc
0.1 A
1/1000
2%
Output current PV
N°2
IP2
Adc
0.1 A
1/1000
2%
Power PV N°1
Pin1
W
1W
1/1000
2%
Power PV N°2
Pin2
W
1W
1/1000
2%
Output voltage
Vout
V
1V
1/1000
2%
Output current
Iout
A
0.1 A
1/1000
2%
Output power
Pout
W
1W
1/1000
2%
Frequency
Freq
Hz
-
-
-
External
temperature
Temp
°C
-
-
-
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
Page 72 of 84
Isolation
resistance
Riso
Ω
-
-
-
Grid
impedance
Imped
Ω
-
-
-
Energy
produced
Energy
Wh
1 Wh
-
Tot. time
counter
Lifetime
hh:mm:ss
1s
-
Partial
Time
hh:mm:ss
1s
-
Partial time
counter
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
7
Page 73 of 84
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, performance and durability.
All these tests, together with the system ensuring Power-One quality, guarantee an
optimal operation of AURORA.
However, should any malfunction of the photovoltaic system arise, solve problems as
follows:
9
Work under safe conditions as stated in chapter 3.5 and following. Make sure that
the connections between AURORA, the photovoltaic field and power distribution
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
PVI-3600-AU Rev.: 1.0)
Page 74 of 84
Before contacting the service centre, keep the following information close at hand, to
maximise efficiency of intervention:
AURORA INFO
NOTE: Information to be found directly on the LCD display
9
9
9
9
9
9
AURORA model?
Serial number?
Week of production?
LED flashing?
Light blinking or steady?
Which signal is shown on the display?
9
9
9
9
9
9
9
9
Short description of the malfunction
Can the malfunction be reproduced?
If so, how?
Does the malfunction appear cyclically?
If so, how frequently?
Is malfunction present from installation?
If so, has it worsened?
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 each array
- number of panels for each string
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
8
8.1
Page 75 of 84
TECHNICAL FEATURES
Input Values
WARNING: the Photovoltaic field and system wiring must be configured so
that the PV input voltage is less than the maximum upper limit independently
from the type, the number and the operating conditions of the chosen
photovoltaic panels.
As panel voltage also depends on working temperature, the number of panels
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 from 530 Vdc (100% output power) to 580 Vdc (0% output
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, the 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 Voc, before calculating the voltage rating of the photovoltaic
array.
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
Max number of
panels
Panel voltage
Max
number
of
panels
Panel voltage
Max number of
panels
72 Cells Panels
Panel voltage
48 Cells Panels
Minimum Panel
Temp.[°C]
36 Cells Panels
Page 76 of 84
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
Table A
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
Page 77 of 84
Value
PVI - 3600
Description
Nominal input voltage
Input voltage range
Input voltage, MPPT operating
range
Input voltage, MPPT range at
full power
Max. short circuit current
(of each array)
Max. operating input current (of
each array)
Max. input power
(of each array)
PV Ground fault protection
Array configuration
360Vdc
from 90 Vdc to 600 Vdc
from 90 Vdc to 580 Vdc
from 165 Vdc to 530 Vdc
12 Adc
10 Adc
2000 W
Ground fault detection and shut off provided
One array
One or two arrays with
common negative
grounding and
independent MPPT
NOTE: If the input current supplied by the photovoltaic 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
PVI-3600-AU Rev.: 1.0)
8.2
Page 78 of 84
Output Values
Description
Nominal output power
Grid voltage maximum range
Nominal grid voltage
Value
PVI – 3600
3600 W
from 200 to 270 Vac
230 Vac
Grid voltage, operating range in
compliance to AS4777
from 89% to 115% of nominal voltage
(from 205 to 264Vac for Vnom=230Vac)
Grid frequency, maximum range
from 45 to 55 Hz
Grid frequency, nominal
Grid frequency, operating range in
compliance to AS4777
Current output, nominal
Output over current protection
50 Hz
from 47.1 to 52.9 Hz
15.7 Arms
17 Arms
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
8.3
Grid protection characteristics
Anti islanding protection
8.4
Page 79 of 84
In compliance to:
- AS4777.3-2005
General characteristics
Description
Value
PVI - 3600
Maximum efficiency
> 95%
Internal consumption during stand-by
<8W
Internal consumption during night time
Operating ambient temperature
Enclosure protection level
Audible Noise
Dimensions (H x W x D):
Weight
< 0.30 W
from -25°C to +55°C (from -13°F to
131°F)
IP21 / Nema 2
< 30dBA @1m with fans off
< 50 dBA @1m with fans max speed
440 x 465 x 57 mm
7.5 kg
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
8.5
Page 80 of 84
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
Aurora is equipped with internal high reliability fans with electronically controlled
speed in order to keep the internal component within the optimal operating
temperature range.
When the ambient temperature is particularly high, the unit, even if the fans are at
maximum speed, may need to reduce the power supplied. The level of the power
derating and the temperature at which the derating starts are influenced by the ambient
temperature and also by several other parameters, such as input voltage, grid voltage,
input power available from the PV panels.
At typical operating conditions with nominal input voltage at 360Vdc and nominal
output voltage 230Vac, supposing that from the PV field a sufficient power to
guarantee a max. output power of 3600W is available, in reference to the graph in
Fig.20, the following applies:
•
•
•
•
For ambient temperatures below 20°C there is no power derating while fans
are off.
For ambient temperatures between 20°C and 25°C there is no power derating
while the fans are being activated. However, it is not necessary to maintain
the fans on permanently, therefore they are turned on and off according to the
requirements.
For ambient temperatures between 25°C and 40°C there is no power derating
while the fans are on at a speed depending on the temperature.
For ambient temperatures between 40°C and 55°C there could be a power
derating, even with the fans at max speed, up to reaching at 55°C a minimum
output power of 2500W.
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
Page 81 of 84
Power
Fan speed
Vin=360Vdc
Vout=230Vac
3500W
20°C 25°C
40°C
Fig. 20
55°C
Ambient
temperature
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
Page 82 of 84
Non Operating Range
Power Derating
(max input current)
Non Operating Range
Voltage Derating Range
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.
Fig. 21
Non Operating Range
Voltage Derating Range
Page 83 of 84
Power Derating
(max input current)
Non Operating Range
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
Fig. 22
The two cases above, originating a power derating, can occur at the same time, but the
power derating will always correspond to the lowest value detected.
Installation and operator’s manual
PVI-3600-AU Rev.: 1.0)
Page 84 of 84
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