LogoFronius Symo 10-20 kW (Online)
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    • Legal notice
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    • 029-10082023
    • Installation location and position
      • Explanation of safety notices
      • Safety
      • Proper use/intended purpose
      • Choice of location
      • Installation position
      • General comments regarding choice of location
    • Attaching the Mounting Bracket
      • Safety
      • Selecting wall plugs and screws
      • Recommended screws
      • Opening the inverter
      • Fitting the mounting bracket to a wall
      • Installing the mounting bracket on a mast or beam
      • Fitting the mounting bracket to metal supports
      • Do not warp or deform the mounting bracket
    • Connecting the inverter to the public grid (AC side)
      • Safety
      • Monitoring the grid
      • Type of AC cable
      • Preparing the aluminium cables for connection
      • AC terminals
      • Cross section of the AC cable
      • Connecting the inverter to the public grid (AC)
      • Maximum fuse rating on alternating current side
    • String fuses
      • Fronius Eco - string fuses
    • Connection variants on multi-MPP and single-MPP tracker inverters
      • General
      • Multi MPP tracker - Fronius Symo -M inverter
      • Single MPP tracker - Fronius Eco inverter
    • Connecting solar module strings to the inverter
      • Safety
      • General comments regarding PV modules
      • DC terminals
      • Connecting aluminium cables
      • Solar module strings - checking the polarity and voltage
      • Connecting the solar module strings to the inverter
    • Data communication
      • Routing data communication cables
      • Installing the Datamanager in the inverter
    • Attaching the inverter to the mounting bracket
      • Attaching the inverter to the mounting bracket
      • Attaching the metall bracket
    • Starting for the first time
      • Starting the inverter for the first time
    • Notes regarding software updates
      • Notes regarding software updates
    • USB Stick as a Data Logger and for Updating Inverter Software
      • USB flash drive as a datalogger
      • Data on the USB flash drive
      • Data volume and storage capacity
      • Buffer memory
      • Suitable USB flash drives
      • USB stick for updating the inverter software
      • Removing the USB flash drive
    • Notes regarding maintenance
      • Maintenance
      • Cleaning
    • Serial Number Sticker for Customer Use
      • Serial number sticker for customer use
    • DC SPD option
      • Overview of DC SPD option
      • Retrofitting the DC SPD‑S option to the Fronius Symo
      • Retrofitting the DC SPD‑M option to the Fronius Symo
      • Retrofitting the DC SPD‑S option to the Fronius Eco
      • Factory-installed DC SPD option wiring
      • Access the Basic menu
      • Settings in the Basic menu
    • DC-plug +- pair MC4 option
      • General

    Fronius Symo 10-20 kW (Online)

    Fitting the mounting bracket
    Connecting the AC connection
    Connecting the DC connection
    Starting for the first time
    Software update

    Installation location and position

    Explanation of safety notices

    DANGER!

    Indicates immediate danger.

    If not avoided, death or serious injury will result.

    WARNING!

    Indicates a potentially hazardous situation.

    If not avoided, death or serious injury may result.

    CAUTION!

    Indicates a situation where damage or injury could occur.

    If not avoided, minor injury and/or damage to property may result.

    NOTE!

    Indicates a risk of flawed results and possible damage to the equipment.

    Explanation of safety notices

    DANGER!

    Indicates immediate danger.

    If not avoided, death or serious injury will result.

    WARNING!

    Indicates a potentially hazardous situation.

    If not avoided, death or serious injury may result.

    CAUTION!

    Indicates a situation where damage or injury could occur.

    If not avoided, minor injury and/or damage to property may result.

    NOTE!

    Indicates a risk of flawed results and possible damage to the equipment.

    Safety

    WARNING!

    Danger due to incorrect operation and incorrectly performed work.

    This can result in serious injury and damage to property.

    Only qualified personnel are authorised to commission your inverter and only within the scope of the respective technical regulations.

    Read the Installation and Operating Instructions before installing and commissioning the equipment.

    WARNING!

    Danger due to work that has been carried out incorrectly.

    This may result in serious injury and damage to property.

    Surge protective devices must only ever be installed and connected by a qualified electrical installation engineer!

    Follow the safety rules.

    Ensure that both the AC side and the DC side of the inverter are de-energised before carrying out any installation and connection work.

    Fire prevention

    CAUTION!

    Danger due to poor or unprofessional installation.

    This may result in damage to inverters and other live photovoltaic system components.
    Poor or unprofessional installation can cause overheating of cables and terminal connections and result in arcs. These can cause heat damage, which in turn may lead to fires.

    Observe the following when connecting AC and DC cables:

    Tighten all terminals to the torque specified in the operating instructions

    Tighten all grounding terminals (PE / GND), including free ones, to the torque specified in the operating instructions

    Do not overload cables

    Check cables for damage and verify that they are laid correctly

    Take note of the safety instructions, Operating Instructions and any local connection regulations

    Using fastening screws, always screw the inverter firmly to the mounting bracket to the torque specified in the Operating Instructions.

    Ensure that the fastening screws are tight before starting the inverter!

    Observe the manufacturer's connection, installation and operating instructions at all times. To reduce the hazard potential to a minimum, perform all installation and connection work carefully according to the instructions and regulations.
    Refer to the device Installation Instructions for the tightening torques to be used at the relevant terminal connections.

    Proper use/intended purpose

    The inverter is intended exclusively to convert direct current from solar modules into alternating current and to feed this into the public grid.
    Utilisation not in accordance with the intended purpose comprises:
    • Any use above and beyond this purpose
    • Making any modifications to the inverter that have not been expressly approved by Fronius
    • the installation of components that are not distributed or expressly approved by Fronius.

    Fronius shall not be liable for any damage resulting from such action.
    No warranty claims will be entertained.

    Proper use also includes:
    • Carefully reading and obeying all the instructions and all the safety and danger notices in the Operating Instructions and Installation Instructions
    • Performing all stipulated maintenance work
    • Installation as specified in the Installation Instructions

    When designing the photovoltaic system, ensure that all components are operated within their permitted operating ranges at all times.

    Observe all the measures recommended by the solar module manufacturer to ensure that the solar module retains its properties in the long term.

    Obey the regulations of the power supply company regarding connection methods and energy fed into the grid.

    Choice of location

     

    The inverter is suitable for indoor installation.

     

    The inverter is suitable for outdoor installation.

    Because of its IP 66 protection class, the inverter is resistant to water jets from any direction and can also be used in damp environments.

     

    In order to minimise the heating up of the inverter, do not expose it to direct insolation. Install the inverter in a protected location, e.g. in the vicinity of the solar modules or beneath the eaves.

     

    Fronius Symo:
    UDCmax at an altitude of:
    0 to 2000 m = 1000 V
    2001 to 2500 m = 950 V
    2501 to 3000 m = 900 V
    3001 to 3400 m = 850 V

    IMPORTANT! The inverter must not be installed or used at altitudes above 3400 m.

     

    Fronius Eco:
    UDCmax at an altitude of:
    0 to 2000 m = 1000 V
    2001 to 2500 m = 950 V

    IMPORTANT! The inverter must not be installed or used at altitudes above 2500 m.

     

    Do not install the inverter in:

    • Areas where ammonia, corrosive vapours, acids or salts are present
      (e.g. fertiliser stores, ventilation openings from cattle sheds, chemical plants, tanneries, etc.)

     

    During certain operating phases the inverter may produce a slight noise. For this reason it should not be installed in an occupied living area.

     

    Do not install the inverter in:

    • Places where there is an increased risk of damage from farm animals (horses, cattle, sheep, pigs, etc.)
    • Stables or adjoining areas
    • Storage areas for hay, straw, chaff, animal feed, fertilisers, etc.

     

    All inverters are designed to be dust-tight. However, in areas with a heavy build-up of dust, the thermal efficiency may still be impaired by dust forming on the cooling surfaces. Regular cleaning is necessary in such situations. We therefore recommend not installing the inverter in areas and environments with high dust accumulation.

     

    Do not install the inverter in:

    • Greenhouses
    • Storage or processing areas for fruit, vegetables or viticulture products
    • Areas used in the preparation of grain, green fodder or animal feeds

    Installation position

    The inverter is suitable for vertical installation on a vertical wall or column.

    The inverter is suitable for a horizontal installation position.

    The inverter is suitable for installation on a sloping surface.

     

     

    Do not install the inverter on a sloping surface with its connection sockets at the top.

    Do not install the inverter at an angle on a vertical wall or column.

    Do not install the inverter horizontally on a vertical wall or pillar.

    Do not install the inverter on a vertical wall or pillar with its connection sockets facing upwards.

    Do not install the inverter overhanging with the connection sockets at the top.

    Do not install the inverter overhanging with the connection sockets at the bottom.

    Do not install the inverter on the ceiling.

    General comments regarding choice of location

    Please note the following criteria when choosing a location for the inverter:

    Install only on a solid, non-flammable surface

     

    Max. ambient temperatures:
    -40 °C / +60 °C

     

    Relative humidity:
    0-100%

     

    The airflow within the inverter is from the right to the top (cold air taken in from the right, hot air dissipated out of the top).
    The exhaust air can reach a temperature of 70 °C.

    If the inverter is installed in a switch cabinet or a similar sealed area, then forced-air ventilation must be provided to ensure adequate heat dissipation.

    If the inverter is to be installed on the outer wall of a cattle shed, maintain a minimum all-round clearance of 2 m between the inverter and all ventilation and other openings in the building.
    The installation location must not be exposed to ammonia, corrosive vapours, salts or acids.

    Attaching the Mounting Bracket

    Safety

    WARNING!

    Danger of residual voltage from capacitors.

    This may result in an electric shock.

    Wait for the capacitors to discharge. The discharge time is indicated on the inverter.

    CAUTION!

    Danger due to dirt or water on the terminals and contacts of the inverter's connection area.

    This may result in damage to the inverter.

    When drilling, ensure that terminals and contacts in the connection area do not become dirty or wet.

    The mounting bracket without the power stage set does not correspond to the protection class of the entire inverter and must therefore not be exposed to external weather influences over a longer period of time without protection. The mounting bracket is protected when the inverter is suspended in the mounting bracket and firmly screwed to it.

    The mounting bracket should be protected from dirt and moisture during installation.

    IMPORTANT!

    Degree of protection IP 66 is only applicable if
    • the inverter is placed in the mounting bracket and permanently attached using screws,
    • the cover for the data communication area is permanently attached to the inverter with screws.

    Degree of protection IP 20 applies to the mounting bracket with no inverter.

    Safety

    WARNING!

    Danger of residual voltage from capacitors.

    This may result in an electric shock.

    Wait for the capacitors to discharge. The discharge time is indicated on the inverter.

    CAUTION!

    Danger due to dirt or water on the terminals and contacts of the inverter's connection area.

    This may result in damage to the inverter.

    When drilling, ensure that terminals and contacts in the connection area do not become dirty or wet.

    The mounting bracket without the power stage set does not correspond to the protection class of the entire inverter and must therefore not be exposed to external weather influences over a longer period of time without protection. The mounting bracket is protected when the inverter is suspended in the mounting bracket and firmly screwed to it.

    The mounting bracket should be protected from dirt and moisture during installation.

    IMPORTANT!

    Degree of protection IP 66 is only applicable if
    • the inverter is placed in the mounting bracket and permanently attached using screws,
    • the cover for the data communication area is permanently attached to the inverter with screws.

    Degree of protection IP 20 applies to the mounting bracket with no inverter.

    Selecting wall plugs and screws

    Important! Different fixings may be required to fit the mounting bracket depending on the type of underlying surface. Fixings are therefore not included in the scope of supply of the inverter. The installer is responsible for selecting the right type of fixing.

    Recommended screws

    To install the inverter, we recommend the use of steel or aluminium screws with a diameter of 6 - 8 mm.

    Opening the inverter

    WARNING!

    Danger from inadequate ground conductor connection.

    This can result in serious injury and damage to property.

    The housing screws provide a suitable ground conductor connection for earthing the housing and must NOT be replaced by any other screws that do not provide a reliable ground conductor connection.

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    4

    Fitting the mounting bracket to a wall

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    2
    3

    Installing the mounting bracket on a mast or beam

    When installing the inverter on a mast or support, Fronius recommends the "Pole Clamp" kit from Rittal GmbH (order no. SZ 2584.000).
    This kit enables the inverter to be installed on round or rectangular masts with the following diameters: Æ from 40 to 190 mm (round mast), ÿ from 50 to 150 mm (rectangular mast)



    Fitting the mounting bracket to metal supports

    NOTE!

    When mounted on metal supports, the inverter must not be exposed to rainwater or splashing water from the rear.

    Provide suitable rainwater protection or splash water protection.

    The mounting bracket must be securely screwed to at least four points.

    1

    Do not warp or deform the mounting bracket

    IMPORTANT! When fitting the mounting bracket to the wall, ensure that the mounting bracket does not become warped or deformed.

    Connecting the inverter to the public grid (AC side)

    Safety

    WARNING!

    Danger due to incorrect operation and incorrectly performed work.

    This may result in serious injury and damage to property.

    Only qualified staff are authorised to commission your inverter and only within the scope of the respective technical regulations.

    Read the Installation and Operating Instructions before installing and commissioning the equipment.

    WARNING!

    Danger due to grid voltage and DC voltage from solar modules that are exposed to light.

    This may result in an electric shock.

    Ensure that both the AC side and the DC side of the inverter are de-energised before carrying out any connection work.

    Only an authorised electrical engineer is permitted to connect this equipment to the public grid.

    CAUTION!

    Danger due to incorrectly tightened terminals.

    This may result in heat damage to the inverter, which may lead to fire.

    When connecting AC and DC cables, ensure that all the terminals are tightened to the specified torque.

    Safety

    WARNING!

    Danger due to incorrect operation and incorrectly performed work.

    This may result in serious injury and damage to property.

    Only qualified staff are authorised to commission your inverter and only within the scope of the respective technical regulations.

    Read the Installation and Operating Instructions before installing and commissioning the equipment.

    WARNING!

    Danger due to grid voltage and DC voltage from solar modules that are exposed to light.

    This may result in an electric shock.

    Ensure that both the AC side and the DC side of the inverter are de-energised before carrying out any connection work.

    Only an authorised electrical engineer is permitted to connect this equipment to the public grid.

    CAUTION!

    Danger due to incorrectly tightened terminals.

    This may result in heat damage to the inverter, which may lead to fire.

    When connecting AC and DC cables, ensure that all the terminals are tightened to the specified torque.

    Monitoring the grid

    To provide the best possible grid monitoring, the resistance in the leads to the AC-side terminals should be as low as possible.

    Type of AC cable

    The following types of AC cable can be connected to the AC terminals of the inverter:

    • Copper or aluminium: solid round conductor
    • Copper: fine-stranded round conductor, up to conductor class 4

    Preparing the aluminium cables for connection

    The AC-side terminals are suitable for connecting single-wire, round aluminium cables. Because of the formation of a non-conductive oxide layer due to the reaction of aluminium with air, the following points must be considered when connecting aluminium cables:

    • the reduced rated currents for aluminium cables
    • the connection conditions listed below

    Always follow the cable manufacturer instructions when using aluminium cables.

    When designing cable cross-sections, take local regulations into account.

    Connection conditions:

    1Carefully clean the oxide layer from the bare end of the cable by scraping it, e.g. with a knife

    IMPORTANT! Do not use brushes, files or emery paper, as the aluminium particles get trapped and can be transferred to other conductors.

    2Once the oxide layer is removed, rub the end of the cable with a neutral grease, such as non-acidic and non-alkaline Vaseline
    3Immediately connect the cable end to the terminal

    IMPORTANT!Repeat the procedure if the cable has been disconnected and is to be re-connected.

    AC terminals

    Fronius Symo
    Fronius Eco
    PE
    Ground conductor / earthing
    L1-L3
    Phase conductor
    N
    Neutral conductor

    Max. cross-section of each conductor cable:
    16 mm²

    Min. cross-section of each conductor cable:
    in accordance with the fuse rating on the AC side, but at least 2.5 mm²

    The AC cables can be connected to the AC terminals without ferrules.

    IMPORTANT! When using ferrules for AC cables with a cross-section of 16 mm², the ferrules must be crimped with a right-angled cross-section.
    The use of ferrules with insulating collars is only permitted up to a max. cable cross-section of 10 mm².

    For a power category of 10-12 kW, an M32 PG gland (ø 7-15 mm) is fitted.

    For a power category of 15-17.5 kW, an M32 PG gland is fitted (ø 18-25 mm) and an M32 PG gland (ø 7-15 mm) supplied.

    From a power category of 20 kW upwards, an M32 PG gland (ø 18-25 mm) is fitted.

    Cross section of the AC cable

    When using an M32 metric screw joint (reducer removed):

    Cable diameter 11 - 21 mm
    (with a cable diameter of 11 mm the strain-relief force is reduced from 100 N to a maximum of 80 N)

    With cable diameters greater than 21 mm, the M32 screw joint must be replaced by an M32 screw joint with a larger clamping area - item number: 42,0407,0780 – strain-relief device M32x1.5 clamping area 18–25.

    Connecting the inverter to the public grid (AC)

    Note!
    • Form loops with the AC cables when connecting them to the AC terminals.
    • When securing the AC cables using a metric screw joint, ensure that the loops do not protrude beyond the connection area.

    Otherwise, under certain circumstances it may no longer be possible to close the inverter.

    Note!
    • Make sure that the grid's neutral conductor is grounded. This may not be the case for IT grids (insulated grids with no earthing); it will then not be possible to use the inverter.
    • The neutral conductor must be connected in order to operate the inverter. A neutral conductor that is too small may adversely affect the inverter feeding energy into the grid. The neutral conductor must have an amperage of at least 1 A.

    IMPORTANT! The PE ground conductor of the AC cable must be laid in such a way that it is the last to be disconnected in the event that the strain-relief device should fail.
    This can be ensured, for example, by making it somewhat longer and by laying it in a loop.

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    Fronius Symo
    3
    Fronius Eco

    With the Fronius Eco, the three phases and the neutral conductor must be passed through a ferrite ring. The ferrite ring is supplied with the inverter.
    The ground conductor (PE) must not be passed through the ferrite ring.

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    The fastening screw must also be tightened for an unassigned ground conductor (PE) connection.

    Note! Observe the torque values marked on the side underneath the terminals.

    If AC cables are laid over the shaft of the DC main switch or across the connection block of the DC main switch, they may be damaged when the inverter is swung in or they may even prevent the inverter from being fully swung in.

    IMPORTANT! Do not lay AC cables over the shaft of the DC main switch or across the connection block of the DC main switch.

    If overlength AC or DC cables are to be laid in loops in the connection area, attach the cables with cable ties to the eyelets provided on the top and bottom of the connection block.

    Fronius Symo
    Fronius Eco

    Maximum fuse rating on alternating current side

    Inverter

    Phases

    AC output

    Maximum output overcurrent protection

    Fronius Symo 10.0-3-M

    3

    10,000 W

    C 80 A

    Fronius Symo 12.0-3-M

    3

    12,000 W

    C 80 A

    Fronius Symo 12.5-3-M

    3

    12,500 W

    C 80 A

    Fronius Symo 15.0-3-M

    3

    15,000 W

    C 80 A

    Fronius Symo 17.5-3-M

    3

    17,500 W

    C 80 A

    Fronius Symo 20.0-3-M

    3

    20,000 W

    C 80 A

    Fronius Eco 25.0-3-M

    3

    25,000 W

    C 80 A

    Fronius Eco 27.0-3-M

    3

    27,000 W

    C 80 A



    Note!
    Local regulations, the electricity retailer or other factors may require a residual-current protective device in the AC connection lead.
    A type A residual-current circuit breaker with a trip current of at least 100 mA is generally sufficient in this case. In particular cases, and depending on local factors, however, the type A residual-current circuit breaker may trip at the wrong time. For this reason, Fronius recommends that a residual-current circuit breaker that is suitable for frequency converters should be used.

    String fuses

    Fronius Eco - string fuses

    WARNING!

    Danger from voltage at the fuse holders.

    This may result in an electric shock. The fuse holders are live when voltage is present on the DC connection of the inverter, even when the DC switch is switched off.

    Make sure that the DC side is de-energised before carrying out any work on the inverter fuse holder.

    String fuses are used in the Fronius Eco to provide additional protection for the solar modules.
    The short circuit current Isc and the maximum series string fuse data (e.g. maximum series fuse rating) specified in the module data sheet of the respective PV module are crucial in affording the PV modules the correct fuse protection. The maximum string fuse rating per terminal is 20 A. The maximum MPP current (nominal current, operating current) Imax is 15 A per string.
    The national regulations regarding fuse protection must be observed. The electrical engineer carrying out the installation is responsible for the correct choice of string fuses.

    Inputs 1.1 - 1.3 and 2.1 - 2.3 are connected in parallel inside the device. This must be taken into account when providing the fuse protection.

    Note! To avoid the risk of a fire, only replace faulty fuses with new ones of the same type and rating.

    As an option, the inverter can be supplied with the following fuses:
    • 6 x 15 A string fuses on the DC+ input and 6 x metal pins on the DC- input. The string fuses installed have a nominal voltage of 1000 V and measure 10x38 mm in size.
    • 12 x metal pins

    Replacing fuses:

    Fronius Eco - string fuses

    WARNING!

    Danger from voltage at the fuse holders.

    This may result in an electric shock. The fuse holders are live when voltage is present on the DC connection of the inverter, even when the DC switch is switched off.

    Make sure that the DC side is de-energised before carrying out any work on the inverter fuse holder.

    String fuses are used in the Fronius Eco to provide additional protection for the solar modules.
    The short circuit current Isc and the maximum series string fuse data (e.g. maximum series fuse rating) specified in the module data sheet of the respective PV module are crucial in affording the PV modules the correct fuse protection. The maximum string fuse rating per terminal is 20 A. The maximum MPP current (nominal current, operating current) Imax is 15 A per string.
    The national regulations regarding fuse protection must be observed. The electrical engineer carrying out the installation is responsible for the correct choice of string fuses.

    Inputs 1.1 - 1.3 and 2.1 - 2.3 are connected in parallel inside the device. This must be taken into account when providing the fuse protection.

    Note! To avoid the risk of a fire, only replace faulty fuses with new ones of the same type and rating.

    As an option, the inverter can be supplied with the following fuses:
    • 6 x 15 A string fuses on the DC+ input and 6 x metal pins on the DC- input. The string fuses installed have a nominal voltage of 1000 V and measure 10x38 mm in size.
    • 12 x metal pins

    Replacing fuses:

    Connection variants on multi-MPP and single-MPP tracker inverters

    General

    In the case of inverters with multiple MPP trackers like the Fronius Symo Advanced –M, there are 2 independent DC inputs (MPP trackers) available. These two MPP trackers can be wired with a different number of modules.

    IMPORTANT! The number of PV modules per MPP tracker per string connection should be the same.

    There are 3 terminals for DC+ per MPP tracker. In total there are six terminals for DC-.

    In the case of inverters with single MPP trackers like the Fronius Eco, there is 1 DC input (MPP tracker) available. The number of PV modules per string connection should be the same. For the MPP tracker, there are 6 terminals for DC+ and 6 terminals for DC-.

    General

    In the case of inverters with multiple MPP trackers like the Fronius Symo Advanced –M, there are 2 independent DC inputs (MPP trackers) available. These two MPP trackers can be wired with a different number of modules.

    IMPORTANT! The number of PV modules per MPP tracker per string connection should be the same.

    There are 3 terminals for DC+ per MPP tracker. In total there are six terminals for DC-.

    In the case of inverters with single MPP trackers like the Fronius Eco, there is 1 DC input (MPP tracker) available. The number of PV modules per string connection should be the same. For the MPP tracker, there are 6 terminals for DC+ and 6 terminals for DC-.

    Multi MPP tracker - Fronius Symo -M inverter

    Multi MPP tracker mode on both MPP tracker inputs:

    Connecting two solar module fields to an inverter with multiple MPP trackers

    Power categories

     

    MPP tracker

    Input current

     

    DC input

    Symo 10-12.5 kVA

     

     

    MPP1

    27 A (IDC NOMINAL)

    DC+1

    MPP2

    16.5 A I(DC RATED)

     

    DC+2

    Symo 15-20 kVA

     

     

    MPP1

    33 A (IDC NOMINAL)

     

    DC+1

    MPP2

    27 A (IDC NOMINAL)

     

    DC+2

    Divide the solar module strings between the two MPP tracker inputs (DC+1 and DC+2). The DC- terminals can be used however you wish, as they are internally connected. A clearly numbered connection, but also at the DC- terminal, makes it easier to find the correct string, e.g., during a testing action. Set the MPP tracker 2 to the "On" position during initial commissioning. The user can of course also do this later in the Basic menu of the inverter.

    Single MPP tracker mode on both MPP tracker inputs:

    If the solar module strings are connected to a string combiner box (GAK - generator junction box) and the distance to the inverter is bridged by means of a DC string, this DC string can be connected to the inverter as follows.

    Jumpering

    With jumpering, the MPP tracker 1 and MPP tracker 2 can be jumpered together. This takes place as shown in the image via the connection DC+1 (Pin2) to DC+2 (Pin1).

    IMPORTANT! The MPP tracker 2 must be set to OFF. This can be checked in the Basic menu of the inverter.

    IMPORTANT! The cable diameter of the DC connection cable and the jumpering must be the same. Jumpering of the DC- terminal is not necessary because it is jumpered internally.

    DC Con Kit 25

    The Fronius DC Con Kit 25 (4,251,015) can be used to connect a solar module string with a cross-section of up to 25 mm² to the inverter.

    Set the MPP tracker 2 to "Off" during initial commissioning. This can also be done later in the Basic menu of the inverter. By using the DC Con Kit 25, the DC strings of the connected DC lines are divided equally between both inputs.

    PV cable connection torque DC Con Kit 25: 5.5 Nm / 50 lb-in

    DC Con Kit 35

    The Fronius DC Con Kit 35 (4,251,029) can be used to connect a PV string with a cross-section of up to 35 mm² to the inverter.

    Set the MPP tracker 2 to "Off" during initial commissioning. This can also be done subsequently in the Basic menu of the inverter.
    By using the DC Con Kit 35, the DC strings of the connected DC lines are divided equally between the two inputs.

    PV cable connection torque DC Con Kit 35: 3 Nm

    Single MPP tracker - Fronius Eco inverter

    Single MPP tracker mode on the MPP tracker input

    If the solar module strings are connected to a string combiner box (GAK for short - generator connection box) and the distance to the inverter is bridged by means of a DC string, this DC string can be connected to the inverter as follows.

    Power categories

     

    MPP tracker

    Input current

     

    DC input

    Eco
    20-27 kVA

     

     

    MPP1

    Imax per terminal 15 A

    DC+1

    MPP1

    Imax per terminal 15 A

     

    DC+2

    DC Con Kit 25

    The Fronius DC Con Kit 25 (4,251,015) can be used to connect a solar module string with a cross-section of up to 25 mm² to the inverter.

    Connecting multiple interconnected solar module fields to an inverter with multiple MPP trackers using one lead

    By using the DC Con Kit 25, the DC strings of the connected DC lines are equally distributed to both inputs.

    PV cable connection torque DC Con Kit 25: 5.5 Nm / 50 lb-in

    DC Con Kit 35

    The Fronius DC Con Kit 35 (4,251,029) can be used to connect a solar module string with a cross-section of up to 35 mm² to the inverter.

    By using the DC Con Kit 35, the DC strings of the connected DC lines are divided equally between both inputs. PV cable connection torque DC Con Kit 35: 3 Nm

    PV cable connection torque DC Con Kit 35: 3 Nm

    Connecting solar module strings to the inverter

    Safety

    WARNING!

    Danger due to incorrect operation and incorrectly performed work.

    This can result in serious injury and damage to property.

    Only qualified staff are authorised to commission your inverter and only within the scope of the respective technical regulations.

    Read the Installation and Operating Instructions before installing and commissioning the equipment.

    WARNING!

    Danger due to grid voltage and DC voltage from solar modules that are exposed to light.

    This may result in an electric shock.

    Ensure that both the AC side and the DC side of the inverter are de-energised before carrying out any connection work.

    Only an authorised electrical engineer is permitted to connect this equipment to the public grid.

    WARNING!

    Danger due to grid voltage and DC voltage from solar modules.

    This may result in an electric shock.

    The DC main switch is only to be used to de-energise the power stage set. The connection area is still live when the DC main switch is switched off.

    Ensure that the power stage set and connection area are disconnected from one another before carrying out any maintenance or service tasks.

    The power stage set, which is enclosed in a separate housing, must only be disconnected from the connection area when in a de-energized state.

    Maintenance and servicing in the power stage set of the inverter must only be carried out by Fronius-trained service technicians.

    CAUTION!

    Danger due to incorrectly tightened terminals.

    This may result in heat damage to the inverter, which may lead to fire.

    When connecting AC and DC cables, ensure that all the terminals are tightened to the specified torque.

    CAUTION!

    Danger due to overloading.

    This may result in damage to the inverter.

    Fronius Symo: The maximum amperage when connecting to a single DC terminal is 33 A.

    Fronius Eco: The maximum amperage when connecting to a single DC terminal is 15 A.

    Connect the DC+ and DC- cables to the DC+ and DC- terminals on the inverter, taking care to ensure that the polarity is correct.

    Observe the maximum DC input voltage.

    Note! The solar modules connected to the inverter must comply with the IEC 61730 Class A standard.

    Note! When photovoltaic modules are exposed to light, they supply current to the inverter.

    Safety

    WARNING!

    Danger due to incorrect operation and incorrectly performed work.

    This can result in serious injury and damage to property.

    Only qualified staff are authorised to commission your inverter and only within the scope of the respective technical regulations.

    Read the Installation and Operating Instructions before installing and commissioning the equipment.

    WARNING!

    Danger due to grid voltage and DC voltage from solar modules that are exposed to light.

    This may result in an electric shock.

    Ensure that both the AC side and the DC side of the inverter are de-energised before carrying out any connection work.

    Only an authorised electrical engineer is permitted to connect this equipment to the public grid.

    WARNING!

    Danger due to grid voltage and DC voltage from solar modules.

    This may result in an electric shock.

    The DC main switch is only to be used to de-energise the power stage set. The connection area is still live when the DC main switch is switched off.

    Ensure that the power stage set and connection area are disconnected from one another before carrying out any maintenance or service tasks.

    The power stage set, which is enclosed in a separate housing, must only be disconnected from the connection area when in a de-energized state.

    Maintenance and servicing in the power stage set of the inverter must only be carried out by Fronius-trained service technicians.

    CAUTION!

    Danger due to incorrectly tightened terminals.

    This may result in heat damage to the inverter, which may lead to fire.

    When connecting AC and DC cables, ensure that all the terminals are tightened to the specified torque.

    CAUTION!

    Danger due to overloading.

    This may result in damage to the inverter.

    Fronius Symo: The maximum amperage when connecting to a single DC terminal is 33 A.

    Fronius Eco: The maximum amperage when connecting to a single DC terminal is 15 A.

    Connect the DC+ and DC- cables to the DC+ and DC- terminals on the inverter, taking care to ensure that the polarity is correct.

    Observe the maximum DC input voltage.

    Note! The solar modules connected to the inverter must comply with the IEC 61730 Class A standard.

    Note! When photovoltaic modules are exposed to light, they supply current to the inverter.

    General comments regarding PV modules

    To enable suitable PV modules to be chosen and to use the inverter as efficiently as possible, it is important to bear the following points in mind:

    • If insolation is constant and the temperature is falling, the open-circuit voltage of the PV modules will increase. The open-circuit voltage must not exceed the maximum permissible system voltage. If the open-circuit voltage exceeds the specified values, the inverter will be destroyed and all warranty claims will be forfeited.
    • The temperature coefficients on the data sheet of the PV modules must be observed.
    • Exact values for sizing the solar modules can be obtained using suitable calculation tools, such as the Fronius Solar.creator (creator.fronius.com).

    IMPORTANT! Before connecting up the solar modules, check that the voltage for the solar modules specified by the manufacturer corresponds to the actual measured voltage.

    DC terminals

    Max. cross-section of each DC cable:
    16 mm²

    Min. cross-section of each DC cable:
    2.5 mm²

    The DC cables can be connected to the DC terminals without ferrules.

    IMPORTANT! When using ferrules for DC cables with a cross-section of 16 mm², the ferrules must be crimped with a right-angled cross-section.
    The use of ferrules with insulating collars is only permitted up to a max. cable cross-section of 10 mm².

    For double insulated DC connection leads with a cable diameter greater than 6 mm, 70 mm of the outer jacket must be stripped in order to connect the cable to the DC terminal.


    IMPORTANT! To ensure effective strain relief of the solar module strings, only use cables with identical cross-sections.

    Connecting aluminium cables

    The DC-side terminals are suitable for connecting single-wire, round aluminium cables. Because of the formation of a non-conductive oxide layer due to the reaction of aluminium with air, the following points must be considered when connecting aluminium cables:

    • the reduced rated currents for aluminium cables
    • the connection conditions listed below

    IMPORTANT! Always follow the cable manufacturer instructions when using aluminium cables.

    IMPORTANT! When designing cable cross-sections, take local regulations into account.

    Connection conditions:

    1Carefully clean the oxide layer from the bare end of the cable by scraping it, e.g. with a knife

    IMPORTANT! Do not use brushes, files or emery paper, as the aluminium particles get trapped and can be transferred to other conductors.

    2Once the oxide layer is removed, rub the end of the cable with a neutral grease, such as non-acidic and non-alkaline Vaseline
    3Immediately connect the cable end to the terminal

    IMPORTANT! Repeat the procedure if the cable has been disconnected and is to be re-connected.

    Solar module strings - checking the polarity and voltage

    CAUTION!

    Danger due to incorrect polarity and voltage.

    This may result in damage to the inverter.

    Check the polarity and voltage of the solar module strings before making the connection. The voltage must not exceed the following values:

    Fronius Symo:

    When installed between 0 and 2000 m above sea level: 1000 V

    When installed between 2001 and 2500 m above sea level: 950 V

    When installed between 2501 and 3000 m above sea level: 900 V

    When installed between 3001 and 3400 m above sea level: 850 V

    the Fronius Symo must not be installed at an altitude exceeding 3400 m above sea level

    Fronius Eco:

    When installed between 0 and 2000 m above sea level: 1000 V

    When installed between 2001 and 2500 m above sea level: 950 V

    the Fronius Eco must not be installed at an altitude exceeding 2500 m above sea level

    Fronius Symo
    Fronius Eco


    Connecting the solar module strings to the inverter

    IMPORTANT! Only break out as many target break points as the number of cables that are provided (e.g. if there are 2 DC cables, then break out 2 recesses).

    IMPORTANT! Fronius Eco: check the string fuses used (type and rating) before connecting the solar module strings to the inverter.

    1
    2
    3
    4
    5
    6
    7

    IMPORTANT! Observe the torque values marked on the side underneath the terminals.

    8
    9

    If DC cables are laid over the shaft of the DC main switch or across the connection block of the DC main switch, they may be damaged when the inverter is swung in or they may even prevent the inverter from being swung in.

    IMPORTANT!
    Do not lay DC cables over the shaft of the DC main switch
    or across the AC connection block or the DC main switch connection block.
    DC cable must not protrude beyond the edge of the housing!

    Data communication

    Routing data communication cables

    IMPORTANT! Operating the inverter with one option card and two broken-out option card slots is not permitted.
    To cater for this eventuality, a suitable blanking cover (item number 42,0405,2094) is available from Fronius as an option.

    IMPORTANT! If data communication cables are wired into the inverter, observe the following points:

    • Depending on the number and cross-section of the data communication cables that are being introduced, take the relevant blanking plugs out of the sealing insert and insert the data communication cables.
    • The relevant blanking plugs must be inserted into the free openings on the sealing insert.
    1
    2
    3
    4

    Routing data communication cables

    IMPORTANT! Operating the inverter with one option card and two broken-out option card slots is not permitted.
    To cater for this eventuality, a suitable blanking cover (item number 42,0405,2094) is available from Fronius as an option.

    IMPORTANT! If data communication cables are wired into the inverter, observe the following points:

    • Depending on the number and cross-section of the data communication cables that are being introduced, take the relevant blanking plugs out of the sealing insert and insert the data communication cables.
    • The relevant blanking plugs must be inserted into the free openings on the sealing insert.
    1
    2
    3
    4

    Installing the Datamanager in the inverter

    WARNING!

    Danger of residual voltage from capacitors.

    This may result in an electric shock.

    Wait for the capacitors to discharge. The discharge time is five minutes.

    WARNING!

    Danger from inadequate ground conductor connection.

    This can result in serious injury and damage to property.

    The housing screws provide a suitable ground conductor connection for earthing the housing and must NOT be replaced by any other screws that do not provide a reliable ground conductor connection.

    IMPORTANT! Observe the ESD guidelines when handling option cards.

    IMPORTANT! Only one Fronius Datamanager in master mode is permitted per Fronius Solar Net ring. Switch any other Fronius Datamanagers to slave mode or remove them.
    Seal off the unoccupied option card slot by replacing the cover (item number 42,0405,2094); alternatively, use an inverter without a Fronius Datamanager (light version).

    IMPORTANT! Only break out one opening for the PC board when installing a Datamanager in the inverter.



    1
    2
    3
    4
    5

    Attaching the inverter to the mounting bracket

    Attaching the inverter to the mounting bracket

    WARNING!

    Danger from inadequate ground conductor connection.

    This can result in serious injury and damage to property.

    The housing screws provide a suitable ground conductor connection for earthing the housing and must NOT be replaced by any other screws that do not provide a reliable ground conductor connection.

    Two people are required to attach the inverter to the mounting bracket, as it is extremely heavy.

    IMPORTANT! For safety reasons, the inverter is fitted with a latch that prevents the inverter from being swung into the mounting bracket unless the DC main switch is switched off.
    • Never attach the inverter to the mounting bracket or swing it in unless the DC main switch is switched off.
    • Never use force to attach the inverter or swing it in.

    The fastening screws in the data communication area of the inverter are used for securing the inverter to the mounting bracket. Correctly tightened fastening screws are a prerequisite if proper contact is to be established between the inverter and mounting bracket.

    CAUTION!

    Danger due to incorrectly tightened fastening screws.

    This may result in arcs occurring when the inverter is in operation, which may lead to fire.

    Always use the specified torque when tightening the fastening screws.

    Warranty claims will be void if the screws are tightened using an incorrect torque.

    Carry out a visual inspection of the seal on the DATCOM mounting bracket cover and check for any damage. A damaged or faulty DATCOM cover must not be fitted to the device.

    1
    2
    3
    4
    5
    6
    7

    Attaching the inverter to the mounting bracket

    WARNING!

    Danger from inadequate ground conductor connection.

    This can result in serious injury and damage to property.

    The housing screws provide a suitable ground conductor connection for earthing the housing and must NOT be replaced by any other screws that do not provide a reliable ground conductor connection.

    Two people are required to attach the inverter to the mounting bracket, as it is extremely heavy.

    IMPORTANT! For safety reasons, the inverter is fitted with a latch that prevents the inverter from being swung into the mounting bracket unless the DC main switch is switched off.
    • Never attach the inverter to the mounting bracket or swing it in unless the DC main switch is switched off.
    • Never use force to attach the inverter or swing it in.

    The fastening screws in the data communication area of the inverter are used for securing the inverter to the mounting bracket. Correctly tightened fastening screws are a prerequisite if proper contact is to be established between the inverter and mounting bracket.

    CAUTION!

    Danger due to incorrectly tightened fastening screws.

    This may result in arcs occurring when the inverter is in operation, which may lead to fire.

    Always use the specified torque when tightening the fastening screws.

    Warranty claims will be void if the screws are tightened using an incorrect torque.

    Carry out a visual inspection of the seal on the DATCOM mounting bracket cover and check for any damage. A damaged or faulty DATCOM cover must not be fitted to the device.

    1
    2
    3
    4
    5
    6
    7

    Attaching the metall bracket

    1

    With the Fronius Eco, a metal bracket included in the scope of delivery must also be fitted to the device. This metal bracket is required for compliance with EMC (electromagnetic compatibility) regulations.

    Starting for the first time

    Starting the inverter for the first time

    WARNING!

    Danger due to incorrect operation and incorrectly performed work.

    This can result in serious injury and damage to property.

    Only qualified personnel are authorised to commission your inverter and only within the scope of the respective technical regulations.

    Read the Installation and Operating Instructions before installing and commissioning the equipment.

    When starting the inverter for the first time, it is necessary to select various setup settings.

    If setup is interrupted before it is complete, it can be restarted by means of an AC reset. An AC reset can be carried out by switching the automatic circuit breaker off and on again.

    The country setup can only be set when using the inverter for the first time. If the country setup needs to be changed at a later date, please contact your Technical Support team.

    1
    2
    3

    * Country setup examples
    The available country setups may change during a software update. Therefore, the following list may not exactly match the display on the inverter.

    50Hz
    International 50 Hz
    60Hz
    International 60 Hz
    AT1E
    Österreich cosphi = 1
    AT2E
    Österreich cosphi P 0,9
    AT3E
    Österreich: Q(U)
    AUS1
    Australia AUS1 - AS/NZS4777.2
    AUS2
    Australia AUS2 - VIC
    AUS3
    Australia AUS3 - NSW Ausgrid
    AUS4
    Australia AUS4 - QLD
    AUS5
    Australia AUS5 - SA
    AUS6
    Australia AUS6 - WA - WP
    AUS7
    Australia AUS7 - WA - HP
    AUA
    Australia Region A 2020
    AUB
    Australia Region B 2020
    AUC
    Australia Region C 2020
    BE
    Belgique / België
    BR2
    Brasil: ≤ 6 kVA
    BR3
    Brasil: > 6 kVA
    CH
    Schweiz / Suisse / Svizzera / Svizra
    CL
    Chile
    CY
    Κύπρος / Kıbrıs / Cyprus
    CZ
    Česko
    CZMV
    Ceske Vysoke Napeti
    DE1F
    Deutschland (≤ 4,6 kVA) - konst. cosPhi(1)
    DE1P
    Deutschland (≤ 4,6 kVA) - cosPhi(P) 0,95
    DE2F
    Deutschland (> 4,6 kVA) - konst. cosPhi(1)
    DE2P
    Deutschland (> 4,6 kVA) - cosPhi(P) 0,9
    DE2U
    Deutschland (> 4,6 kVA) - Q(U)
    DEM2
    Deutschland DE MS ext. NA-S
    DK B
    Danmark 50kW-1.5MW
    DKA1
    West Denmark - 125kW
    DKA2
    East Denmark - 125kW
    DU1
    Dubai < 10 kW
    DU2
    Dubai 10 kW - 400 kW
    DU3
    Dubai > 400 kW
    EE
    Estonia
    ES
    España
    ESOS
    Territorios españoles en el extranjero (Spanish Oversea Islands)
    EULV
    EU - low voltage
    EUMV
    EU - medium voltage
    FI
    Finland
    FR
    France
    FRMV
    France MV
    FROS
    Territoire d’Outre-Mer (French Oversea Islands)
    G98
    Great Britain GB - G98
    G99
    Great Britain GB - G99
    GB
    Great Britain
    GR
    Ελλάδα
    HR
    Hrvatska
    HU
    Magyarország
    IE
    Éire / Ireland
    IL
    ישראל / إسرائيل / Israel
    IN
    India
    IT6
    Italia ≤ 11,08 kVA 2019
    IT7
    Italia > 11,08 kVA 2019
    ITM1
    Italia IT - MT 2019
    JO98
    Jordan G98
    JO99
    Jordan G99
    KR
    Republic of Korea
    LK
    Sri Lanka
    MG50
    Microgrid 50 Hz
    MG60
    Microgrid 60 Hz
    NI98
    Northern Ireland G98
    NI99
    Northern Ireland G99
    NIE1
    Northern Ireland < 16 A
    NIE2
    Northern Ireland > 16 A
    NL
    Nederland
    NO
    Norge
    NZ
    New Zealand
    PF1
    Polynésie française (French Polynesia)
    PL
    Poland
    PT
    Portugal
    RO
    România
    SA
    Saudi Arabia
    SE
    Sverige
    SI
    Slovenija
    SK
    Slovensko
    TH M
    Thailand MEA
    TH P
    Thailand PEA
    TR
    Türkiye
    TRMV
    Türkiye orta g.
    UA
    Україна
    ZA
    South Africa < 100kVA
    ZA
    South Africa < 1 MVA
    4
    5
    6
    7
    8
    9

    Starting the inverter for the first time

    WARNING!

    Danger due to incorrect operation and incorrectly performed work.

    This can result in serious injury and damage to property.

    Only qualified personnel are authorised to commission your inverter and only within the scope of the respective technical regulations.

    Read the Installation and Operating Instructions before installing and commissioning the equipment.

    When starting the inverter for the first time, it is necessary to select various setup settings.

    If setup is interrupted before it is complete, it can be restarted by means of an AC reset. An AC reset can be carried out by switching the automatic circuit breaker off and on again.

    The country setup can only be set when using the inverter for the first time. If the country setup needs to be changed at a later date, please contact your Technical Support team.

    1
    2
    3

    * Country setup examples
    The available country setups may change during a software update. Therefore, the following list may not exactly match the display on the inverter.

    50Hz
    International 50 Hz
    60Hz
    International 60 Hz
    AT1E
    Österreich cosphi = 1
    AT2E
    Österreich cosphi P 0,9
    AT3E
    Österreich: Q(U)
    AUS1
    Australia AUS1 - AS/NZS4777.2
    AUS2
    Australia AUS2 - VIC
    AUS3
    Australia AUS3 - NSW Ausgrid
    AUS4
    Australia AUS4 - QLD
    AUS5
    Australia AUS5 - SA
    AUS6
    Australia AUS6 - WA - WP
    AUS7
    Australia AUS7 - WA - HP
    AUA
    Australia Region A 2020
    AUB
    Australia Region B 2020
    AUC
    Australia Region C 2020
    BE
    Belgique / België
    BR2
    Brasil: ≤ 6 kVA
    BR3
    Brasil: > 6 kVA
    CH
    Schweiz / Suisse / Svizzera / Svizra
    CL
    Chile
    CY
    Κύπρος / Kıbrıs / Cyprus
    CZ
    Česko
    CZMV
    Ceske Vysoke Napeti
    DE1F
    Deutschland (≤ 4,6 kVA) - konst. cosPhi(1)
    DE1P
    Deutschland (≤ 4,6 kVA) - cosPhi(P) 0,95
    DE2F
    Deutschland (> 4,6 kVA) - konst. cosPhi(1)
    DE2P
    Deutschland (> 4,6 kVA) - cosPhi(P) 0,9
    DE2U
    Deutschland (> 4,6 kVA) - Q(U)
    DEM2
    Deutschland DE MS ext. NA-S
    DK B
    Danmark 50kW-1.5MW
    DKA1
    West Denmark - 125kW
    DKA2
    East Denmark - 125kW
    DU1
    Dubai < 10 kW
    DU2
    Dubai 10 kW - 400 kW
    DU3
    Dubai > 400 kW
    EE
    Estonia
    ES
    España
    ESOS
    Territorios españoles en el extranjero (Spanish Oversea Islands)
    EULV
    EU - low voltage
    EUMV
    EU - medium voltage
    FI
    Finland
    FR
    France
    FRMV
    France MV
    FROS
    Territoire d’Outre-Mer (French Oversea Islands)
    G98
    Great Britain GB - G98
    G99
    Great Britain GB - G99
    GB
    Great Britain
    GR
    Ελλάδα
    HR
    Hrvatska
    HU
    Magyarország
    IE
    Éire / Ireland
    IL
    ישראל / إسرائيل / Israel
    IN
    India
    IT6
    Italia ≤ 11,08 kVA 2019
    IT7
    Italia > 11,08 kVA 2019
    ITM1
    Italia IT - MT 2019
    JO98
    Jordan G98
    JO99
    Jordan G99
    KR
    Republic of Korea
    LK
    Sri Lanka
    MG50
    Microgrid 50 Hz
    MG60
    Microgrid 60 Hz
    NI98
    Northern Ireland G98
    NI99
    Northern Ireland G99
    NIE1
    Northern Ireland < 16 A
    NIE2
    Northern Ireland > 16 A
    NL
    Nederland
    NO
    Norge
    NZ
    New Zealand
    PF1
    Polynésie française (French Polynesia)
    PL
    Poland
    PT
    Portugal
    RO
    România
    SA
    Saudi Arabia
    SE
    Sverige
    SI
    Slovenija
    SK
    Slovensko
    TH M
    Thailand MEA
    TH P
    Thailand PEA
    TR
    Türkiye
    TRMV
    Türkiye orta g.
    UA
    Україна
    ZA
    South Africa < 100kVA
    ZA
    South Africa < 1 MVA
    4
    5
    6
    7
    8
    9

    Notes regarding software updates

    Notes regarding software updates

    If the inverter is supplied with a USB flash drive, the inverter software must be updated as soon as the inverter has been commissioned:

    1Plug the USB flash drive into the data communication area of the inverter
    2Open the Setup menu
    3Select the "USB" menu item
    4Select "Software Update"
    5Update the software

    Notes regarding software updates

    If the inverter is supplied with a USB flash drive, the inverter software must be updated as soon as the inverter has been commissioned:

    1Plug the USB flash drive into the data communication area of the inverter
    2Open the Setup menu
    3Select the "USB" menu item
    4Select "Software Update"
    5Update the software

    USB Stick as a Data Logger and for Updating Inverter Software

    USB flash drive as a datalogger

    If a USB flash drive is connected to the USB A socket it can function as a datalogger for an inverter.

    The logging data stored on the USB flash drive can be viewed at any time in third-party programmes (e.g Microsoft® Excel) using the CSV file logged at the same time.

    Older versions of Excel (before Excel 2007) are limited to a maximum of 65,536 rows.

    USB flash drive as a datalogger

    If a USB flash drive is connected to the USB A socket it can function as a datalogger for an inverter.

    The logging data stored on the USB flash drive can be viewed at any time in third-party programmes (e.g Microsoft® Excel) using the CSV file logged at the same time.

    Older versions of Excel (before Excel 2007) are limited to a maximum of 65,536 rows.

    Data on the USB flash drive

    If the USB flash drive is being used as a data logger, three files will be created automatically:

    • FRONIUS.sys system file:
      This file stores information from the inverter that is irrelevant to the customer. The file must not be deleted separately. Only delete all of the files (sys, fld, csv) at one time.
    • DALO.fld log file:
      A log file for reading the data in the Fronius Solar.access software.

      Further details on the Fronius Solar.access software can be found in the "DATCOM Details" operating instructions at http://www.fronius.com
    • DATA.csv log file:
      A log file for reading the data in a spreadsheet program (e.g.: Microsoft® Excel)
    Data structure on the USB flash drive
    (1)
    USB root directory
    (2)
    Fronius inverters (Fronius Galvo, Fronius Symo, Fronius Primo or Fronius Eco)
    (3)
    Inverter number - can be set in the Setup menu under DATCOM

    If there are several inverters with the same inverter number, the three files will be saved in the same folder. A digit is added to the file name as a suffix (e.g.: DALO_02.fld)

    Structure of the CSV file:

    (1)
    ID
    (2)
    Inverter no.
    (3)
    Inverter type (DATCOM code)
    (4)
    Logging interval in seconds
    (5)
    Energy in watts per second, relative to the logging interval
    (6)
    Inductive reactive power
    (7)
    Capacitive reactive power
    (8)
    Average values during the logging interval (AC voltage, AC current, DC voltage, DC current)
    (9)
    Additional information

    Data volume and storage capacity

    A USB flash drive with a storage capacity of 1 GB can record logging data for roughly seven years at a logging interval of five minutes.

    CSV file
    CSV files can only store 65,535 lines (data records) (up to Microsoft® Excel 2007; there is no restriction from this version onwards).
    At a five-minute logging interval, the 65,535 lines will be written within approximately seven months (CSV data size of approx. 8 MB).
    In order to avoid data loss, the CSV file should be backed up to a PC and deleted from the USB flash drive within this seven-month period. If the logging interval is set to a longer period, this time frame will be increased accordingly.

    FLD file
    The FLD file should not be larger than 16 MB. This will provide enough storage capacity for approximately six years at a logging interval of five minutes.
    If the file exceeds the 16 MB limit, it should be backed up to a PC and all of the data on the USB flash drive should be deleted.

    After backing up and removing the data, the USB flash drive can be reconnected immediately to resume recording the logging data without any further steps being required.

    IMPORTANT! Using a full USB flash drive can lead to data loss or data being overwritten. When using USB flash drives, always ensure that there is sufficient storage capacity on the flash drive.

    NOTE!

    Risk of USB flash drive becoming full.

    This may result in data being lost or overwritten.

    When using USB flash drives, always ensure that there is sufficient storage capacity on the flash drive.

    Buffer memory

    If the USB stick is unplugged (e.g. for data backup purposes), the logging data is written to a buffer memory in the inverter.
    As soon as the USB stick is plugged in again, the data is copied automatically from the buffer memory to the stick.

    The buffer memory can store a maximum of six logging points. Data is only logged while the inverter is running (output greater than 0 W). The logging interval is permanently set at 30 minutes. Data can be recorded on the buffer memory for a three-hour time period as a result.

    When the buffer memory is full, the oldest data in the memory will be overwritten by the next batch of data.

    IMPORTANT! The buffer memory requires a permanent power supply.
    If there is a power failure while the inverter is in operation, all the data in the buffer memory will be lost. To avoid losing data during the night, the automatic night switch-off facility must be deactivated (switch the "Night Mode" setup parameter to ON - see the Datamanager 2.0 Operating Instructions, section "Setting and displaying the menu items", "Viewing and adjusting parameters in the DATCOM menu item").
    On the Fronius Eco or Fronius Symo 15.0-3 208, the buffer memory also functions with just a DC supply.

    Suitable USB flash drives

    Due to the variety of USB flash drives available on the market, it cannot be guaranteed that every USB flash drive will be detected by the inverter.

    Fronius recommends that only certified, industry-grade USB flash drives are used (look out for the USB-IF logo).

    The inverter supports USB flash drives with the following file systems:

    • FAT12
    • FAT16
    • FAT32

    Fronius recommends that the USB flash drive employed should only be used for recording logging data or updating the inverter software. The USB flash drives should not contain any other data.

    USB symbol on the inverter display, e.g. in display mode "NOW":

    If the inverter detects a USB flash drive, the USB symbol will appear in the top right corner of the display.

    When inserting a USB flash drive, check whether the USB symbol is displayed (it may also flash).



    IMPORTANT! Please note for outdoor applications that conventional USB flash drives are often only guaranteed to work within a restricted temperature range.
    For outdoor applications ensure that the USB flash drive also functions, for example, at low temperatures.

    USB stick for updating the inverter software

    With the help of the USB stick, end customers can also update the inverter software via the USB item on the SETUP menu: the update file is first saved to the USB stick, from where it is then transferred to the inverter. The update file must be saved in the root directory on the USB stick.

    Removing the USB flash drive

    Safety instruction concerning the removal of a USB flash drive:

     

    IMPORTANT! To avoid any loss of data, a USB flash drive may only be removed if the following conditions are met:

    • Only remove a USB flash drive via the 'Safely remove USB / HW' item on the SETUP menu
    • The 'Data transmission' LED has stopped flashing or comes on steady.

    Notes regarding maintenance

    Maintenance

    IMPORTANT! When installed outdoors in a horizontal position: once a year, check that all screw joints are tight!

    Maintenance and servicing may only be carried out by Fronius-trained service technicians.

    Maintenance

    IMPORTANT! When installed outdoors in a horizontal position: once a year, check that all screw joints are tight!

    Maintenance and servicing may only be carried out by Fronius-trained service technicians.

    Cleaning

    Clean the inverter as required with a damp cloth.
    Do not use cleaning agents, abrasives solvents or similar to clean the inverter.

    Serial Number Sticker for Customer Use

    Serial number sticker for customer use

    The serial number of the inverter is located on the rating plate on the bottom of the inverter.
    Depending on the installation position of the inverter, the serial number can be difficult to access or read, e.g. if the inverter has been installed in a dark or shaded area.

    Two serial number stickers are enclosed with the inverter's installation instructions:

    *
    57 x 20 mm
    **
    67 x 20 mm

    These can be affixed by the customer in a visible location of their choosing, e.g. on the front of the inverter or on the Operating Instructions.

    Application example:
    Serial number sticker on the Operating Instructions or on the front of the inverter

    For Australia only:
    Affix the DRM Australia sticker in the Datamanager area.

    Serial number sticker for customer use

    The serial number of the inverter is located on the rating plate on the bottom of the inverter.
    Depending on the installation position of the inverter, the serial number can be difficult to access or read, e.g. if the inverter has been installed in a dark or shaded area.

    Two serial number stickers are enclosed with the inverter's installation instructions:

    *
    57 x 20 mm
    **
    67 x 20 mm

    These can be affixed by the customer in a visible location of their choosing, e.g. on the front of the inverter or on the Operating Instructions.

    Application example:
    Serial number sticker on the Operating Instructions or on the front of the inverter

    For Australia only:
    Affix the DRM Australia sticker in the Datamanager area.

    DC SPD option

    Overview of DC SPD option

    Surge protection (DC SPD option) can be ordered pre-installed or can be retrofitted to the inverter later. Depending on the device type and operating mode, a suitable type must be installed:

     

    TYPE 1+2 - S
    4,251,024

    TYPE 1+2 - M
    4,251,025

    TYPE 2 - S
    4,251,019

    TYPE 2 - M
    4,251,020

    Symo

    Multi MPP Tracker mode

    Single MPP Tracker mode

    ECO

     

       *

       *

    *Note: The PV current is displayed distorted by the hardware topology used.

    Overview of DC SPD option

    Surge protection (DC SPD option) can be ordered pre-installed or can be retrofitted to the inverter later. Depending on the device type and operating mode, a suitable type must be installed:

     

    TYPE 1+2 - S
    4,251,024

    TYPE 1+2 - M
    4,251,025

    TYPE 2 - S
    4,251,019

    TYPE 2 - M
    4,251,020

    Symo

    Multi MPP Tracker mode

    Single MPP Tracker mode

    ECO

     

       *

       *

    *Note: The PV current is displayed distorted by the hardware topology used.

    Retrofitting the DC SPD‑S option to the Fronius Symo

    The DC cables can be connected to the DC terminals without ferrules.

    To retrofit the DC SPD-S option to the inverter:
    1
    2
    3
    4
    5
    6
    Earthing can also be established via the connected AC cable.
    7

    Retrofitting the DC SPD‑M option to the Fronius Symo

    The DC cables can be connected to the DC terminals without ferrules.

    To retrofit the DC SPD-M option to the inverter:
    1
    2
    3
    4
    5
    6
    Earthing can also be established via the connected AC cable.
    7
    8

    Retrofitting the DC SPD‑S option to the Fronius Eco

    The DC cables can be connected to the DC terminals without ferrules.

    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    Earthing can also be established via the connected AC cable.
    13

    Factory-installed DC SPD option wiring

    When the DC SPD option is pre-installed at the factory, the following wiring must be performed:

    The M16 cable gland is included in the scope of delivery.

    1
    DC SPD - M option

    Earthing can also be established via the connected AC cable.

    1
    DC SPD - S option

    Earthing can also be established via the connected AC cable.

    2
    3

    Access the Basic menu

    1Press the "Menu”    button

    The menu level appears.

    2Press the unassigned "Menu / Esc" key
    5 times  

    "Access Code" is displayed in the "CODE" menu; the first digit starts flashing.

    3Enter the code 22742: Use the "Plus" and "Minus" keys    to select a value for the first digit of the code
    4Press the "Enter"    button

    The second digit flashes.

    5Repeat steps 3 and 4 for the second, third, fourth and fifth digits of the access code until...

    the selected code starts flashing.

    6Press the "Enter"    button

    The Basic menu appears.

    7Use the "Plus" and "Minus" keys    to select the desired entry
    8Edit the desired menu item by pressing the "Enter"    button
    9Press the "Esc" key to exit the Basic menu   

    Settings in the Basic menu

    1
    2
    3

    Warning is shown on the display (STATE 568).

    Inverter is switched off (STATE 668).

    N/C (normally closed contact) *

    N/O (normally open contact) *

    * Select the appropriate setting depending on the application.

    DC-plug +- pair MC4 option

    General

    The inverter can be ordered with the DC-plug +- pair MC4 option.

    Unused connections must be covered with a cover plate. The cover plates can be ordered using the following item numbers:

    • MC30A DC+: 43,0003,0880
    • MC30A DC-: 43,0003,0879

    The scope of delivery for the inverter with the DC-plug +- pair MC4 option includes a label with a cable overview. This label can be positioned on the inverter in a suitable place.

    General

    The inverter can be ordered with the DC-plug +- pair MC4 option.

    Unused connections must be covered with a cover plate. The cover plates can be ordered using the following item numbers:

    • MC30A DC+: 43,0003,0880
    • MC30A DC-: 43,0003,0879

    The scope of delivery for the inverter with the DC-plug +- pair MC4 option includes a label with a cable overview. This label can be positioned on the inverter in a suitable place.