Fronius Symo / Fronius Eco Operating Instructions

1. Safety rules

1. Safety rules

• Injury or death to the operator or a third party
• Damage to the device and other material assets belonging to the operating company.

• Be suitably qualified
• Have knowledge of and experience in dealing with electrical installations and
• Have fully read and precisely followed these Operating Instructions

The Operating Instructions must always be at hand wherever the device is being used. In addition to the Operating Instructions, attention must also be paid to any generally applicable and local regulations regarding accident prevention and environmental protection.

• Must be kept in a legible state
• Must not be damaged
• Must not be removed
• Must not be covered, pasted or painted over

The terminals can reach high temperatures.

• Injury or death to the operator or a third party
• Damage to the device and other material assets belonging to the operating company

Any safety devices that are not fully functional must be repaired by an authorised specialist before the device is switched on.

Never bypass or disable protection devices.

For the location of the safety and danger notices on the device, refer to the section headed "General remarks" in the Operating Instructions for the device.

Any equipment malfunctions which might impair safety must be remedied before the device is turned on.

This is for your personal safety!

1. Safety rules

Operation or storage of the device outside the stipulated area will be deemed as not in accordance with the intended purpose. The manufacturer accepts no liability for any damage resulting from improper use.

1. Safety rules

Die Informationen in dieser Bedienungsanleitung sind nur für qualifiziertes Fachpersonal bestimmt. Ein elektrischer Schlag kann tödlich sein. Führen Sie keine anderen als die in der Dokumentation angeführten Tätigkeiten aus. Das gilt auch, wenn Sie dafür qualifiziert sind.

Sämtliche Kabel müssen fest, unbeschädigt, isoliert und ausreichend dimensioniert sein. Lose Verbindungen, beschädigte oder unterdimensionierte Kabel sofort von einem autorisierten Fachbetrieb in Stand setzen lassen.

Wartung und Instandsetzung dürfen nur durch einen autorisierten Fachbetrieb erfolgen.

Bei fremdbezogenen Teilen ist nicht gewährleistet, dass diese beanspruchungs- und sicherheitsgerecht konstruiert und gefertigt sind. Nur Original-Ersatzteile verwenden.

Ohne Genehmigung des Herstellers keine Veränderungen, Ein- oder Umbauten am Gerät vornehmen.

Beschädigte Komponenten sofort austauschen oder austauschen lassen.

1. Safety rules

The maximum sound power level of the inverter is specified in the Technical Data.

The device is cooled as quietly as possible with the aid of an electronic temperature control system; this depends on the amount of converted power, the ambient temperature, the level of soiling of the device, etc.

It is not possible to provide a workplace-related emission value for this device because the actual sound pressure level is heavily influenced by the installation situation, the power quality, the surrounding walls and the properties of the room in general.

1. Safety rules

In certain cases, even though a device complies with the standard limit values for emissions, it may affect the application area for which it was designed (e.g., when there is equipment that is susceptible to interference at the same location, or if the site where the device is installed is close to either radio or television receivers). If this is the case, then the operator is obliged to take action to rectify the situation.

1. Safety rules

• backing up any changes made to the factory settings
• saving and retaining personal settings

1. Safety rules

Copyright of these operating instructions remains with the manufacturer.

Text and illustrations were accurate at the time of printing, subject to change.
We are grateful for suggestions for improvement and information regarding any discrepancies in the operating instructions.

1. Safety rules

All installed components in the photovoltaic system must be compatible and have the necessary configuration options. The installed components must not restrict or negatively influence the functioning of the photovoltaic system.

Device design:

(1)	Housing cover
(2)	Inverter
(3)	Wall bracket
(4)	Connection area incl. DC main switch
(5)	Data communication area
(6)	Data communication cover

The inverter transforms the direct current generated by the solar modules into alternating current. This alternating current is fed into the public grid synchronously with the grid voltage.

The inverter has been developed exclusively for use in grid-connected photovoltaic systems; it is impossible to generate energy independently of the public grid.

Thanks to its design and the way it works, the inverter is extremely safe both to install and to operate.

The inverter automatically monitors the public grid. In the event of abnormal grid conditions, the inverter ceases operating immediately and stops feeding power into the grid (e.g. if the grid is switched off, if there is an interruption, etc.).
The grid is monitored by monitoring the voltage, frequency and islanding conditions.

The inverter operates fully automatically. As soon after sunrise as there is sufficient energy available from the solar modules, the inverter starts monitoring the grid. When insolation has reached a sufficient level, the inverter starts feeding energy into the grid.
The inverter operates in such a way that the maximum possible amount of power is obtained from the solar modules.
As soon as the power available has fallen below the level at which energy can be fed into the grid, the inverter disconnects the power electronics completely from the grid and stops running. It retains all its settings and stored data.

If the inverter becomes too hot, it automatically reduces the current output power in order to protect itself.
Reasons for the inverter becoming too hot include the ambient temperature being too high or inadequate heat dissipation (e.g. if it is installed in a switch cabinet without suitable heat dissipation).

The Fronius Eco does not have an internal boost converter. This results in certain restrictions in the choice of solar module and string. The minimum DC input voltage (U_{DC min}) depends on the grid voltage. On the other hand, a highly optimised device is then available for the appropriate application.

1. General

Device design:

(1)	Housing cover
(2)	Inverter
(3)	Wall bracket
(4)	Connection area incl. DC main switch
(5)	Data communication area
(6)	Data communication cover

The inverter transforms the direct current generated by the solar modules into alternating current. This alternating current is fed into the public grid synchronously with the grid voltage.

The inverter has been developed exclusively for use in grid-connected photovoltaic systems; it is impossible to generate energy independently of the public grid.

Thanks to its design and the way it works, the inverter is extremely safe both to install and to operate.

The inverter automatically monitors the public grid. In the event of abnormal grid conditions, the inverter ceases operating immediately and stops feeding power into the grid (e.g. if the grid is switched off, if there is an interruption, etc.).
The grid is monitored by monitoring the voltage, frequency and islanding conditions.

The inverter operates fully automatically. As soon after sunrise as there is sufficient energy available from the solar modules, the inverter starts monitoring the grid. When insolation has reached a sufficient level, the inverter starts feeding energy into the grid.
The inverter operates in such a way that the maximum possible amount of power is obtained from the solar modules.
As soon as the power available has fallen below the level at which energy can be fed into the grid, the inverter disconnects the power electronics completely from the grid and stops running. It retains all its settings and stored data.

If the inverter becomes too hot, it automatically reduces the current output power in order to protect itself.
Reasons for the inverter becoming too hot include the ambient temperature being too high or inadequate heat dissipation (e.g. if it is installed in a switch cabinet without suitable heat dissipation).

The Fronius Eco does not have an internal boost converter. This results in certain restrictions in the choice of solar module and string. The minimum DC input voltage (U_{DC min}) depends on the grid voltage. On the other hand, a highly optimised device is then available for the appropriate application.

1. General

• 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.

• 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.

1. General

There are warning notices and safety symbols on and in the inverter. These warning notices and safety symbols must not be removed or painted over. They warn against incorrect operation, as this may result in serious injury and damage.

Safety symbols:
	Danger of serious injury and damage due to incorrect operation
	Do not use the functions described here until you have fully read and understood the following documents: These Operating Instructions All the Operating Instructions for the system components of the photovoltaic system, especially the safety rules
	Dangerous electrical voltage
	Wait for the capacitors to discharge.
	To comply with European Directive 2012/19/EU on Waste Electrical and Electronic Equipment and its implementation as national law, electrical equipment that has reached the end of its life must be collected separately and returned to an approved recycling facility. Any device that you no longer require must be returned to your distributor or disposed of at an approved collection and recycling facility in your area. Ignoring this European Directive may have potentially adverse effects on the environment and your health!

Text of the warning notices:

WARNING!
An electric shock can be fatal. Before opening the device, it must be disconnected at the input and output. Wait for the capacitors to discharge (5 minutes).

Symbols on the rating plate:
	CE-Kennzeichnung – bestätigt das Einhalten der zutreffenden EU-Richtlinien und Verordnungen.
	UKCA-Kennzeichnung – bestätigt das Einhalten der zutreffenden Richtlinien und Verordnungen des Vereinigten Königreichs.
	WEEE-Kennzeichnung – Elektro- und Elektronik-Altgeräte müssen gemäß europäischer Richtlinie und nationalem Recht getrennt gesammelt und einer umweltgerechten Wiederverwertung zugeführt werden.
	RCM-Kennzeichnung – gemäß den Anforderungen von Australien und Neuseeland geprüft.
	ICASA-Kennzeichnung – gemäß den Anforderungen der Independent Communications Authority of South Africa geprüft.
	CMIM-Kennzeichnung – gemäß den Anforderungen von IMANOR für Einfuhrvorschriften und die Einhaltung der marokkanischen Normen geprüft.

1. General

String fuses are used in the Fronius Eco to provide additional protection for the solar modules.
The short circuit current I_sc 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) I_max is 15 A per string.

If three strings are connected, strings 1.1, 2.1, 2.3 must be used.
If four strings are connected, strings 1.1, 1.2, 2.1, 2.2 must be used.

If the inverter is being operated with an external string combiner box, a DC Connector Kit must be used (item number: 4,251,015). In this case the solar modules are protected externally in the string combiner box, and the metal bolts need to be used in the inverter.

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.

• 6 x 15 A string fuses on the DC+ input and 6 x metal pins on the DC- input
• 12 x metal pins

1. General

• I_N > 1.5 x I_SC
• V_N >/= max. open-circuit voltage of the PV generator
• Fuse dimensions: diameter 10 x 38 mm
  

1. Data communication and Fronius Solar Net

Fronius Solar Net was developed to make system add-ons flexible to use in a variety of different applications. Fronius Solar Net is a data network that enables multiple inverters to be linked up using system add-ons.

It is a bus system that uses a ring topology. One suitable cable is sufficient for communication between one or several inverters that are connected on the Fronius Solar Net using a system add-on.

Similarly, every inverter on the Fronius Solar Net must be assigned a unique number. For instructions on how to assign a unique number, refer to the section SETUP menu item.

Fronius Solar Net automatically recognises a wide variety of system add-ons.

In order to distinguish between several identical system extensions, each one of them must be assigned a unique number.

More detailed information on the individual system add-ons can be found in the relevant operating instructions or on the internet at http://www.fronius.com ® http://www.fronius.com/QR-link/4204101938

1. Data communication and Fronius Solar Net

Depending on the model, the inverter may be equipped with the Fronius Datamanager plug-in card (8).

1. Data communication and Fronius Solar Net

The "Fronius Solar Net" LED is on:
the power supply for data communication within the Fronius Solar Net / interface protocol is OK

The "Fronius Solar Net" LED flashes briefly every 5 seconds:
data communication error in the Fronius Solar Net

• Overcurrent (current flow > 3 A, e.g. resulting from a short circuit in the Fronius Solar Net ring)
• Undervoltage (not a short circuit, voltage in Fronius Solar Net < 6.5 V, e.g. if there are too many DATCOM components on the Fronius Solar Net and not enough electrical power is available)
  
  In this case, power for the Fronius DATCOM components must be supplied by connecting an additional power supply (43,0001,1194) to one of the Fronius DATCOM components.
  
  To detect the presence of an undervoltage, check some of the other Fronius DATCOM components for faults as required.

After cutting out because of overcurrent or undervoltage, the inverter attempts to restore the power supply in the Fronius Solar Net every 5 seconds while the fault is still present.

Once the fault is rectified, power to the Fronius Solar Net will be restored within 5 seconds.

1. Data communication and Fronius Solar Net

Recording and archiving data from the inverter and sensor using a Fronius Datamanager and a Fronius Sensor Box:

Data network with 3 inverters and a Fronius Sensor Box:
- Inverter 1 with Fronius Datamanager
- Inverters 2 and 3 without Fronius Datamanager!

= Terminating plug

The external communication (Fronius Solar Net) takes place on the inverter via the data communication area. The data communication area contains two RS 422 interfaces as inputs and outputs. RJ45 plug connectors are used to make the connection.

IMPORTANT! Since the Fronius Datamanager functions as a datalogger, the Fronius Solar Net ring must not include any other datalogger.
There must only be one Fronius Datamanager in each Fronius Solar Net ring.
Fronius Symo 3 - 10 kW: Any other Fronius Datamanagers must be removed and the unoccupied option card slot sealed off using the blanking cover (42,0405,2020 - available from Fronius as an optional extra); alternatively, use an inverter without Fronius Datamanager (light version).
Fronius Symo 10 - 20 kW, Fronius Eco: Any other Fronius Datamanagers must be removed and the unoccupied option card slot sealed off by replacing the cover (item number 42,0405,2094); alternatively, use an inverter without Fronius Datamanager (light version).

1. Data communication and Fronius Solar Net

Various wiring variants can be connected to the multifunction current interface. However, these cannot be operated simultaneously. For example, if an S0 meter is connected to the multifunction current interface, it is not possible to connect a signal contact for the surge protection device (or vice versa).

Pin 1 = measurement input: max. 20 mA, 100 Ohm measurement resistor (load impedance)
Pin 2 = max. short circuit current 15 mA, max. open-circuit voltage 16 V DC or GND

Wiring diagram variant 1: Signal contact for surge protective device
Depending on the setting in the Basic menu (Signal Input submenu), the DC SPD option (surge protective device) either outputs a warning or an error on the display. Further information on the DC SPD option can be found in the Installation Instructions.

Wiring diagram variant 2: S0 meter
A meter for recording the self-consumption of each S0 can be connected directly to the inverter. This S0 meter can be positioned directly at the feed-in point or in the consumption branch.

IMPORTANT! In order to connect an S0 meter to the inverter, it may be necessary to update the inverter firmware.

The S0 meter must comply with the IEC62053-31 Class B standard

• Dynamic power reduction by means of inverter
  For more information see chapter Dynamic power reduction by means of inverter on page (→)
• Dynamic power reduction by means of the Fronius Datamanager 2.0
  for more info see: manuals.fronius.com/html/4204260191/#0_m_0000017472

1. Data communication and Fronius Solar Net

In the Fronius Solar Net ring (a combination of several inverters), the Fail-Safe function prevents inadmissible feeding of the connected inverters in the start-up phase or during operation. For this purpose, a signal is transmitted from the primary inverter with built-in data manager to the secondary inverters (Lite devices).

The function is activated as soon as the data manager fails or the Solar Net connection is interrupted. In this case, the signal is not transmitted to the secondary inverters. All devices switch off with status 710.

The following requirements must be met to enable the Fail-Safe to function correctly:

• For all inverters in the Solar Net ring, Fail-Safe Mode must be set to Permanent and Fail-Safe Behaviour to Disconnect.
• The inverter with data manager must be located in the last position of the ring line.

Correct wiring

Function in the event of a fault

Faults occur at the beginning and end of the Solar Net ring – the primary inverter stops sending the signal, and secondary inverters switch off with status 710.

Faults occur at the beginning and end of the Solar Net ring or between the connected inverters – the primary inverter stops sending the signal, and secondary inverters switch off with status 710.

1. Data communication and Fronius Solar Net

Energy companies or grid operators may impose feed-in limits on an inverter. Dynamic power reduction takes account of self-consumption by the household before the power of an inverter is reduced:

A counter for determining self-consumption of the S0 can be connected directly to the inverter – see chapter Explanation of the multifunction current interface on page (→)

A feed-in limit can be set in the Basic menu under Signal input – S0 meter – see chapter Menu items in the Basic menu on page (→).

• Grid feed-in limit
  Field for entering the maximum grid feed-in power in W. If this value is exceeded, the inverter regulates down to the set value within the time required by national standards and regulations.
• Pulses per kWh
  Field for entering the pulses per kWh of the S0 meter.

Zero feed-in is possible with this configuration.

When using the S0 meter and power reduction by means of an inverter, the S0 meter must be installed in the consumption branch.

S0 meter in the consumption branch

If dynamic power reduction is subsequently configured using the Fronius Datamanager 2.0 (Inverter user interface - UC Editor menu - Dynamic power reduction), dynamic power reduction must be deactivated using the inverter (Inverter display - Basic menu - Signal input - S0 meter).

1. Fronius Datamanager 2.0

No.	Function
(1)	IP switch For switching the IP address:
	Switch position A Default IP address with opening of the WLAN access point Fronius Datamanager 2.0 uses the set IP address 169.254.0.180 to establish a direct connection to a PC via LAN. Setting the IP switch to position A also opens an access point to enable a direct WLAN connection to the Fronius Datamanager 2.0. Access data for this access point: Network name: FRONIUS_240.XXXXXX Code: 12345678 Access to the Fronius Datamanager 2.0 is possible: Using the DNS name "http://datamanager" Using the IP address 169.254.0.180 for the LAN interface Using the IP address 192.168.250.181 for the WLAN access point
	Switch position B Assigned IP address The Fronius Datamanager 2.0 uses an assigned IP address (factory setting dynamic (DHCP)) The IP address can be set on the Fronius Datamanager 2.0 website.
(2)	WLAN LED Flashing green: Fronius Datamanager 2.0 is in Service mode (IP switch on the Fronius Datamanager 2.0 plug-in card is in position A or Service mode has been activated via the inverter display, the WLAN access point is open) Lights up green: WLAN connection established Flashing green/red (alternately): WLAN access point has timed out following activation (1 hour) Lights up red: no WLAN connection Flashing red: faulty WLAN connection Does not light up: Fronius Datamanager 2.0 is in Slave mode
(3)	Solar.web connection LED Lights up green: Fronius Solar.web connection established Lights up red: Fronius Solar.web connection is required but has not been established Does not light up: no connection to Fronius Solar.web is required
(4)	Supply LED Lights up green: Fronius Solar Net is providing an adequate power supply; Fronius Datamanager 2.0 is ready for use. Does not light up: insufficient or no power supply from Fronius Solar Net - an external power supply is required or the Fronius Datamanager 2.0 is in Slave mode Flashing red: update in progress IMPORTANT! Never interrupt the power supply while an update is in progress. Lights up red: update failed
(5)	Connection LED Lights up green: connection established within Fronius Solar Net Lights up red: connection within Fronius Solar Net interrupted Does not light up: Fronius Datamanager 2.0 is in Slave mode
(6)	LAN connection Ethernet interface, colour-coded blue, for connecting the Ethernet cable
(7)	I/Os Digital inputs and outputs
	Modbus RTU 2-wire (RS485): D- Modbus data - D+ Modbus data +
	Int./ext. Power supply - GND + Uint / Uext Internal voltage output 12.8 V or input for an external supply voltage >12.8 - 24 V DC (+ 20%)
	Digital inputs: 0 - 3, 4 - 9 Voltage level: low = min. 0 V - max. 1.8 V; high = min. 3 V - max. 24 V DC (+ 20%) Input currents: dependent on input voltage; input resistance = 46 kOhm
	Digital outputs: 0 - 3 Switching capacity when power is supplied by the Fronius Datamanager 2.0 plug-in card: 3.2 W in total for all 4 digital outputs
	Switching capacity when power is supplied by an external power supply delivering min. 12.8 - max. 24 V DC (+ 20%), connected to Uint / Uext and GND: 1 A, 12.8 - 24 V DC (depending on external power supply) for each digital output
	The connection to the I/Os is established via the mating connector supplied.
(8)	Antenna socket This is where the WLAN antenna is connected
(9)	Modbus termination switch (for Modbus RTU) Internal bus terminator with 120 ohm resistor (yes/no) Switch in "ON" position: 120 ohm terminating resistor active Switch in "off" position: no terminating resistor active IMPORTANT! On an RS485 bus, the terminating resistor on the first and last device must be active.
(10)	Fronius Solar Net Master / Slave switch To switch from master to slave mode within a Fronius Solar Net ring IMPORTANT! In slave mode, all the LEDs on the Fronius Datamanager 2.0 plug-in card are off.

1. Fronius Datamanager 2.0

The Night Mode parameter under "Display Settings" in the Setup menu is preset to OFF in the factory.
For this reason the Fronius Datamanager 2.0 cannot be accessed during the night or when the available DC voltage is insufficient.

To nevertheless activate the Fronius Datamanager 2.0, switch the inverter off and on again at the mains and press any function button on the inverter display within 90 seconds.

See also the chapters on "Menu items in the Setup menu", "Display settings" (Night Mode).

1. Fronius Datamanager 2.0

• the Fronius Datamanager 2.0 plug-in card must be installed in the inverter,
  or
• there must be a Fronius Datamanager Box 2.0 in the Fronius Solar Net ring.

IMPORTANT! In order to establish a connection to Fronius Datamanager 2.0, “Obtain IP address automatically (DCHP)” must be activated on the end device in question (e.g. laptop, tablet).

The inverter establishes the WLAN access point. The WLAN access point remains open for 1 hour. The protection switch on the Fronius Datamanager 2.0 can remain in switch position A due to the activation of the WLAN Access Point.

The Setup wizard start page is displayed.

The technician wizard is intended for the installer and contains standard-specific settings. Running the technician wizard is optional.
If the technician wizard is run, it is vital to note the service password that is issued. This service password is necessary for setting the "DNO Editor" menu item.
If the technician wizard is not run, no specifications regarding power reduction are set.

Running the Fronius Solar.web wizards is mandatory.

The Fronius Solar.web homepage is displayed,
or
the Fronius Datamanager 2.0 web page is displayed.

1. Fronius Datamanager 2.0

Further information on the Fronius Datamanager 2.0 and other start-up options can be found at:
	→ http://www.fronius.com/QR-link/4204260191DE

The keys operate capacitively. Exposure to water may impair their function. If necessary, wipe the keys dry with a cloth to ensure optimum functionality.

1. Controls and indicators

The keys operate capacitively. Exposure to water may impair their function. If necessary, wipe the keys dry with a cloth to ensure optimum functionality.

1. Controls and indicators

Power for the display comes from the mains voltage. Depending on the setting selected in the Setup menu, the display can be kept on all day. (For night mode, see section Display settings)

IMPORTANT! The display of the inverter is not a calibrated measuring device.
A slight deviation from the utility meter of the energy company is system-related. A calibrated meter will be needed to calculate the bills for the energy company.

Display areas, display mode

Display areas in Setup mode

1. Navigation at the menu level

1. Navigation at the menu level

If two minutes pass without any button being pressed, the display backlighting switches off automatically and the inverter goes to the "NOW" menu item (assuming the display backlighting is set to AUTO).

The automatic selection of the "NOW" menu item can happen from any position on the menu level, unless the inverter was manually switched into the "Standby" operating mode.

After automatically selecting the "NOW" menu item, the current power of feeding in is displayed.

1. Navigation at the menu level

	1Press "ESC"
	The display switches to the menu level. 2Using the "Left" or "Right" keys   select the desired menu item 3Press the "Enter" key   to select the desired menu item

• NOW
  Displays real-time values
• LOG
  Data recorded today, during the current calendar year and since the inverter was started for the first time
• GRAPH
  Day characteristic displays a plot showing the output power during the day. The time axis is scaled automatically. Press the "Back" key to close the display
• SETUP
  Setup menu
• INFO
  Information about the device and the software

1. Navigation at the menu level

1. Navigation at the menu level

The inverter is pre-configured after commissioning has been completely carried out (e.g. using the Installation Wizard) according to the country setup.

The SETUP menu item allows the initial settings of the inverter to be changed easily to bring it in line, as closely as possible, with the preferences and requirements of the user.

1. SETUP menu item

The inverter is pre-configured after commissioning has been completely carried out (e.g. using the Installation Wizard) according to the country setup.

The SETUP menu item allows the initial settings of the inverter to be changed easily to bring it in line, as closely as possible, with the preferences and requirements of the user.

1. SETUP menu item

IMPORTANT! As a result of software updates, you may find that your device has certain functions that are not described in these Operating Instructions, or vice versa. Certain illustrations may also differ slightly from the actual controls on your device, but these controls function in exactly the same way.

1. SETUP menu item

Entering the SETUP menu item
	1At the menu level, use the "Left" or "Right" keys    to select the "SETUP" menu item
	2Press the "Enter" key
	The first entry under the SETUP menu item is displayed: "Standby"

Scrolling between the entries
	3Use the "Up" and "Down" keys    to scroll between the available entries

Exiting an entry
	4To exit a menu entry, press the "Back" key    The menu level appears

If no key is pressed for 2 minutes:

• The inverter switches from wherever it is on the menu level back to the "NOW" display mode (exception: "Standby" Setup menu item).
• The display backlighting goes out unless it has been set to ON in Display Setting - Backlighting (see Display Setting - Backlighting).
• The power currently being fed in is displayed or the currently active state code is displayed.

1. SETUP menu item

1Open the desired menu

2Use the 'Up' or 'Down' keys to select the desired menu item  

3Press "Enter"  

The available settings are displayed:		The first digit of a value to be set flashes:
4Use the 'Up' or 'Down' buttons to select the desired setting   5Press the 'Enter' key to save and apply the setting.   To discard the setting, press the 'Esc' key.		4Use the 'Up' or 'Down' keys to select a value for the first digit   5Press "Enter"   The second digit of the value flashes. 6Repeat steps 4 and 5 until ... the whole value to be set flashes.
		7Press "Enter"   8Repeat steps 4 - 6 as required for units or other values that are to be set until the appropriate unit or the value flashes. 9Press the 'Enter' key to save and apply the changes.   To discard the changes, press the 'Esc' key.
The currently selected menu item is displayed.		The currently selected menu item is displayed.

1. SETUP menu item

	1Select "Clock" from the Setup menu    .
	2Press the "Enter"    key

	An overview of the values that can be changed is displayed.
	3Use the "Up" and "Down" keys    Select "Set time"
	4Press the "Enter"    key

	The current time appears. (HH:MM:SS, 24-hour clock), the "tens" digit for the hour will flash.
	5Use the "Up" and "Down" keys    to select a value for the first digit of the code
	6Press the "Enter"    key

	The "units" digit for the hour will flash.
	7Repeat steps 5 and 6 to set the "units" digit for the hour, for the minutes and for the seconds until...

	the set time starts flashing.
	8Press the "Enter"    key

	The time is applied and the overview of values that can be changed is displayed.
	4Press the "Esc"    key

The "Clock" item on the Setup menu appears.

Manual activation / deactivation of Standby mode

• No energy is fed into the grid.
• The Startup LED will show steady orange.
• In the display, STANDBY / ENTER are alternately displayed
• In Standby mode, no other menu item at menu level can be accessed or adjusted.
• The automatic switchover into the "NOW" display mode after 2 minutes of keyboard inactivity does not occur.
• Standby mode can only be terminated manually by pressing the "Enter" key.
• Pressing "Enter" at any time will cause energy to resume feeding into the grid, as long as there is no error (state code)

Switching off Standby mode (manually switching off feeding energy into the grid):

1Select the "Standby" item

2Press "Enter" function    key

"STANDBY" and "ENTER" appear alternately on the display.
Standby mode is now active.
The Startup LED shows steady orange.

Resuming feeding energy into the grid:
In standby mode, the display alternates between 'STANDBY' and 'ENTER'.

1Press the "Enter" function key to resume feeding energy into the    grid

The "Standby" menu item is displayed.
At the same time, the inverter enters the startup phase.
The operating state LED shows steady green when feeding energy into the grid has been resumed.

1. Menu items in the Set-up menu

Manual activation / deactivation of Standby mode

• No energy is fed into the grid.
• The Startup LED will show steady orange.
• In the display, STANDBY / ENTER are alternately displayed
• In Standby mode, no other menu item at menu level can be accessed or adjusted.
• The automatic switchover into the "NOW" display mode after 2 minutes of keyboard inactivity does not occur.
• Standby mode can only be terminated manually by pressing the "Enter" key.
• Pressing "Enter" at any time will cause energy to resume feeding into the grid, as long as there is no error (state code)

Switching off Standby mode (manually switching off feeding energy into the grid):

1Select the "Standby" item

2Press "Enter" function    key

"STANDBY" and "ENTER" appear alternately on the display.
Standby mode is now active.
The Startup LED shows steady orange.

Resuming feeding energy into the grid:
In standby mode, the display alternates between 'STANDBY' and 'ENTER'.

1Press the "Enter" function key to resume feeding energy into the    grid

The "Standby" menu item is displayed.
At the same time, the inverter enters the startup phase.
The operating state LED shows steady green when feeding energy into the grid has been resumed.

1. Menu items in the Set-up menu

Checking data communications, entering the inverter number, protocol settings

1. Menu items in the Set-up menu

Running firmware updates or saving detailed information from the inverter to the USB flash drive

Safely remove hardware
To remove a USB flash drive from the USB A socket on the plug-in data communications card without losing any data.

• If the OK message appears
• when the "Data transfer" LED stops flashing or comes on steady

Software update
To update the inverter firmware using a USB flash drive.

The inverter starts copying the data.
"BOOT" and the progress of storing the individual tests expressed in % are displayed until all the data for all the electronic modules has been copied.

Once copying is complete, the inverter updates the electronic modules as required in sequence.
"BOOT", the affected modules and the update progress in % are displayed.

The final step is for the inverter to update the display.
The display remains dark for approx. 1 minute while the monitoring and status LEDs flash.

Once the firmware update is complete, the inverter enters its start-up phase before going on to start feeding energy into the grid. Unplug the USB flash drive using the "Safely remove hardware" function.

When the inverter firmware is updated, any custom settings that were configured in the Setup menu are retained.

	Logging interval Activate / deactivate the USB logging function and specify a logging interval
	Unit	Minutes
	Setting range	30 min. / 20 min./ 15 min./ 10 min./ 5 min./ No log
	Factory setting	30 min.
	30 min.	The logging interval is 30 minutes; every 30 minutes new logging data will be saved to the USB flash drive.
	20 min.
	15 min.
	10 min.
	5 min.	The logging interval is 5 minutes; every 5 minutes new logging data will be saved to the USB flash drive.
	No log	No data is saved

IMPORTANT! In order for the USB logging function to work correctly the time must be set correctly. Setting the time is discussed in the section "Menu items in the Setup menu" - "Clock".

1. Menu items in the Set-up menu

Status codes (state codes), the status of the inverter (e.g. feeding energy into the grid) or Energy Manager functions can be displayed using the floating switch contact (relay).

* these are only shown if the "E-Manager" function has been activated under "Relay mode".

1. Menu items in the Set-up menu

The "Energy Manager" (E-Manager) function can be used to activate the floating switch contact in such a way that it functions as an actuator.
Thus, a consumer that is connected to the floating switch contact can be controlled by specifying a switch-on or switch-off point that depends on the feed-in power (effective power).

• If the inverter is not feeding any power into the grid
• If the inverter is manually switched to Standby mode
• If the effective power is set to < 10% of the nominal output of the inverter.

To activate the Energy Manager function, select the "E-Manager" item and press the "Enter" key.
When the "Energy Manager" function is running, the "Energy Manager" symbol will appear in the top left corner of the display:

   When the floating NO contact is off (open contact)

   When the floating NC contact is on (closed contact)

To deactivate the Energy Manager function, select a different function (ALL / Permanent / OFF / ON) and press the "Enter" key.

When choosing the switch-off point, the power consumption of the connected consumer should be taken into account.

When choosing the switch-on point, the weather conditions and anticipated insolation should be taken into account.

Application example
Switch-on point = 2000 W, switch-off point = 1800 W

If the inverter is outputting 2000 W or above, then the floating switch contact on the inverter is switched on.
If the inverter output falls to below 1800 W, the floating switch contact is switched off.

This allows useful applications, such as operating a heat pump or an air-conditioning system using as much self-generated power as possible, to be implemented quickly

1. Menu items in the Set-up menu

Set the time, date, the display format and automatic changeover between summer and winter time

1. Menu items in the Set-up menu

1. Menu items in the Set-up menu

• Counter deviation / Calibration
• Currency
• Feed-in tariff
• CO2 factor

1. Menu items in the Set-up menu

To check that the fan is working correctly

• Use the "Up" and "Down" keys to select the desired fan
• Testing of the selected fan is initiated by clicking "Enter".
• The fan will continue to run until the operator exits the menu by pressing "Esc".

IMPORTANT! Nothing will show on the inverter display if the fan is working. The only way to check how the fan is working is by listening and feeling.

PV Ins.- Insulation resistance of the PV system
Ext. Lim. - external Limitation
U PV 1 / U PV 2* (U PV 2 is not available on the Fronius Symo 15.0-3 208)
Current DC voltage at the DC input terminals, even if the inverter is feeding no power into the grid whatsoever (from the 1st or 2nd MPP Tracker)
* MPP Tracker 2 must be switched to ON via the Basic menu
GVDPR - Grid voltage-dependent power reduction
Fan #1 - Percentage of target output for fan

1. The INFO menu item

PV Ins.- Insulation resistance of the PV system
Ext. Lim. - external Limitation
U PV 1 / U PV 2* (U PV 2 is not available on the Fronius Symo 15.0-3 208)
Current DC voltage at the DC input terminals, even if the inverter is feeding no power into the grid whatsoever (from the 1st or 2nd MPP Tracker)
* MPP Tracker 2 must be switched to ON via the Basic menu
GVDPR - Grid voltage-dependent power reduction
Fan #1 - Percentage of target output for fan

1. The INFO menu item

IMPORTANT! Due to the low level of insolation early in the morning and in the evening, the status codes STATE 306 (Power low) and STATE 307 (DC low) are displayed routinely at these times of day. These status codes do not indicate any kind of fault at this point in time.

The status of the most recent inverter fault can be displayed.

• Press the "Enter" key to see the status of the power stage set and the most recent fault
• Use the "Up" and "Down" keys to scroll through the list
• Press the "Back" key to close the status and fault list

1. The INFO menu item

• Press the 'Enter' key to see the five most recent grid faults
• Use the 'Up' and 'Down' keys to scroll through the list
• Press the 'Back' key to close the grid fault display

1. The INFO menu item

For displaying the settings that will be of relevance to a power supply company. The values shown will depend on the country setup or the device-specific settings of the inverter.

1. The INFO menu item

Displays the version and serial numbers of the PC boards in the inverter (e.g. for service purposes)

The inverter has a key lock function.
When the key lock is active, the Setup menu is not accessible, i.e. the setup data cannot be changed accidentally (or maliciously).
The code 12321 has to be entered in order to activate / deactivate the key lock.

1. Switching the key lock on and off

The inverter has a key lock function.
When the key lock is active, the Setup menu is not accessible, i.e. the setup data cannot be changed accidentally (or maliciously).
The code 12321 has to be entered in order to activate / deactivate the key lock.

1. Switching the key lock on and off

	1Press the "Menu" key
	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 12321: Use the "Plus" and "Minus" keys    to select a value for the first digit of the code
	4Press the "Enter" key

	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" key

	"Setup Menu Lock" is displayed in the "LOCK" menu.
	7Use the "Plus" and "Minus" keys    to turn the key lock on or off: ON = key lock is on (the Setup menu is not accessible) OFF = key lock is off (the Setup menu is accessible)
	8Press the "Enter" key

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

• imported into the Fronius Solar.access software using the FLD file that was logged at the same time,
• viewed directly in third-party programs (e.g. Microsoft® Excel) using the CSV file logged at the same time.

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

Further information on "Data on a USB flash drive", "Data volume and storage capacity" as well as "Buffer memory" can be found at:
Fronius Symo 3 - 10 kW:
	® http://www.fronius.com/QR-link/4204260172EN
Fronius Symo 10 - 20 kW, Fronius Eco:
	® http://www.fronius.com/QR-link/4204260175EN

1. USB Stick as a Data Logger and for Updating Inverter Software

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

• imported into the Fronius Solar.access software using the FLD file that was logged at the same time,
• viewed directly in third-party programs (e.g. Microsoft® Excel) using the CSV file logged at the same time.

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

Further information on "Data on a USB flash drive", "Data volume and storage capacity" as well as "Buffer memory" can be found at:
Fronius Symo 3 - 10 kW:
	® http://www.fronius.com/QR-link/4204260172EN
Fronius Symo 10 - 20 kW, Fronius Eco:
	® http://www.fronius.com/QR-link/4204260175EN

1. USB Stick as a Data Logger and for Updating Inverter Software

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.

1. USB Stick as a Data Logger and for Updating Inverter Software

With the help of the USB flash drive, end customers can also update the inverter software via the SETUP menu: the update file is first saved to the USB flash drive, from where it is then transferred to the inverter.

1. USB Stick as a Data Logger and for Updating Inverter Software

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.

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   

1. 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   

1. The Basic menu

1. The Basic menu

If the option: DC SPD (surge protection) has been fitted in the inverter, the following menu items will be set by default:

Signal input: Ext Sig.
Triggering method: Warning
Connection type: N/C

1

1. Turn off the automatic circuit breaker.
2. Turn the DC disconnector to the "OFF" switch position.

Switching the inverter on again

1. Turn the DC disconnector to the "ON" switch position.
2. Switch on the automatic circuit breaker.

1. Switching off current supply and restarting the inverter

1

1. Turn off the automatic circuit breaker.
2. Turn the DC disconnector to the "OFF" switch position.

Switching the inverter on again

1. Turn the DC disconnector to the "ON" switch position.
2. Switch on the automatic circuit breaker.

The inverter performs a system self-diagnosis that automatically detects many faults that may occur and shows them on the display. This means you are promptly made aware of malfunctions in the inverter or the photovoltaic system, or of any installation or operating faults.

If the system self-diagnosis has detected a specific fault, the associated status code will be shown on the display.

IMPORTANT! Status codes may sometimes appear briefly as a result of the inverter's control response. If the inverter then continues working with no sign of any problem, this means that there was no fault.

1. Status diagnostics and troubleshooting

The inverter performs a system self-diagnosis that automatically detects many faults that may occur and shows them on the display. This means you are promptly made aware of malfunctions in the inverter or the photovoltaic system, or of any installation or operating faults.

If the system self-diagnosis has detected a specific fault, the associated status code will be shown on the display.

IMPORTANT! Status codes may sometimes appear briefly as a result of the inverter's control response. If the inverter then continues working with no sign of any problem, this means that there was no fault.

1. Status diagnostics and troubleshooting

• Check the AC voltage on the inverter connection sockets:
  the AC voltage must be 220/230 V (+ 10 % / - 5 %) or 380/400 V (+ 10 % / - 5 %).

1. Status diagnostics and troubleshooting

Class 1 status codes generally only arise momentarily and are caused by the public grid.

Example: The grid frequency is too high and the inverter may not feed any energy into the grid owing to a standard. There is nothing wrong with the device.
The initial response of the inverter is to disconnect itself from the grid. The grid is subsequently checked during the stipulated monitoring period. If no further problem has been detected by the end of this period, then the inverter will resume feeding energy into the grid.

The GPIS SoftStart function is activated according to the country setup:
After cutting out due to an AC error, the output power of the inverter is continuously increased in line with the national guidelines.

1. Status diagnostics and troubleshooting

Class 3 includes status codes that may occur while feeding energy into the grid, but generally do not cause the process to be interrupted for any length of time.

The inverter disconnects automatically from the grid, the grid is then monitored as specified and the inverter attempts to resume feeding energy into the grid.

*) If the status code is displayed all the time: notify a Fronius-trained service engineer

**) Fault is rectified automatically. If this status code keeps recurring, contact your system engineer

1. Status diagnostics and troubleshooting

Some of the class 4 status codes necessitate intervention by a Fronius-trained service technician.

*) If the status code is displayed all the time: notify a Fronius-trained service technician

**) If this status code keeps recurring, contact your system engineer

1. Status diagnostics and troubleshooting

Class 5 status codes do not generally interfere with feeding energy into the grid, but can cause restrictions. These status codes are displayed until they are acknowledged by pressing a key (however, the inverter continues to operate normally in the background).

*) If the status code is displayed all the time: Notify a Fronius-trained service technician.

**) If this status code keeps recurring, contact your system engineer.

1. Status diagnostics and troubleshooting

Some of the class 6 status codes necessitate intervention by a Fronius-trained service engineer.

*) If the status code is displayed all the time: notify a Fronius-trained service engineer

**) Fault is rectified automatically. If this status code keeps recurring, contact your system engineer

1. Status diagnostics and troubleshooting

Class 7 status codes relate to the control system, the configuration and inverter data recording, and may directly or indirectly affect the process of feeding energy into the grid.

*) If the status code is displayed all the time: Notify a Fronius-trained service technician

1. Status diagnostics and troubleshooting

1. Status diagnostics and troubleshooting

• an error appears frequently or all the time
• an error appears that is not listed in the tables

1. Status diagnostics and troubleshooting

When operating the inverter in extremely dusty environments:
when necessary, clean the cooling elements and fan on the back of the inverter as well as the air intakes at the mounting bracket using clean compressed air.

1. Technical data

1. Technical data

1. Technical data

1. Technical data

1. Technical data

1. Technical data

1. Technical data

1. Technical data