If you see any of the symbols depicted in the "Safety rules" chapter, special care is required.

If you see any of the symbols depicted in the "Safety rules" chapter, special care is required.

• 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
• Have fully read and precisely followed these Operating Instructions

In addition to the Operating Instructions, all applicable local rules and regulations regarding accident prevention and environmental protection must also be followed.

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

• 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 authorized 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 chapter headed "Warning notices on the device" in the Operating Instructions for your device.

Faults that could compromise safety must be remedied before switching on the device.

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.

The servicing information contained in these operating instructions is intended only for the use of qualified service engineers. An electric shock can be fatal. Do not carry out any actions other than those described in the documentation. This also applies to qualified personnel.

All cables and leads must be secured, undamaged, insulated and adequately dimensioned. Loose connections, scorched, damaged or inadequately dimensioned cables and leads must be immediately repaired by authorised personnel.

Maintenance and repair work must only be carried out by an authorised specialist.

It is impossible to guarantee that bought-in parts are designed and manufactured to meet the demands made on them, or that they satisfy safety requirements. Use only original spare parts (also applies to standard parts).

Do not carry out any alterations, installations, or modifications to the device without first obtaining the manufacturer's permission.

Components that are not in perfect condition must be changed immediately.

The 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 grid quality, the surrounding walls and the properties of the room in general.

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 sensitive equipment 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 appropriate action to rectify the situation.

This system has backup power functions. This enables a replacement power supply to be established in the event of a failure in the public grid.

Where an automatic backup power supply is installed, a backup power warning notice (https://www.fronius.com/en/search-page, item number: 42,0409,0275) must be fitted on the electrical distributor.

Maintenance and installation work in the home network requires both disconnection on the utility side and deactivation of the replacement power mode by opening the integrated DC disconnector on the inverter.

Depending on the insolation conditions and the battery state of charge, the backup power supply is automatically deactivated and activated. This can cause the backup power supply to unexpectedly return from standby mode. Therefore, installation work can only be performed on the home network when the backup power supply is deactivated.

Influencing factors on the total power in backup power mode:

Reactive power
Electrical loads with a power factor not equal to 1 also require reactive power in addition to effective power. The reactive power also loads the inverter. Therefore, to correctly calculate the actual total power, it is not the rated power of the load that is relevant, but the current caused by effective and reactive power.

Devices with a high reactive power are mainly electric motors such as:

• Water pumps
• Circular saws
• Blowers and fans

High starting current
Electrical loads that need to accelerate a large mass usually require a high starting current. This can be up to 10 times higher than the nominal current. The maximum current of the inverter is available for the starting current. Loads with too high starting currents therefore cannot be started/operated, even though the nominal power of the inverter suggests that they can. When dimensioning of the backup power circuit, the connected load power and any starting current must also be taken into account.

Devices with high starting currents are, for example:

• Devices with electric motors (e.g. lifting platform, circular saws, planing bench)
• Devices with large transmission ratio and flywheel mass
• Devices with compressors (e.g. compressed air compressors, air conditioning systems)

IMPORTANT!
Very high starting currents can cause short-term distortion or a drop in output voltage. The simultaneous operation of electronic devices in the same backup power supply system should be avoided.

Load unbalance
When dimensioning three-phase backup power networks, the total output power and the power output per phase of the inverter must be taken into account.

IMPORTANT!
The inverter may only be operated within the limits of its technical capabilities. Operation outside of its technical capabilities can cause the inverter to shut down.

The user is responsible for the safekeeping of any changes made to the factory settings. The manufacturer accepts no liability for any deleted personal settings.

Copyright of these operating instructions remains with the manufacturer.

The text and illustrations are all technically correct at the time of printing. We reserve the right to make changes. The contents of the operating instructions shall not provide the basis for any claims whatsoever on the part of the purchaser. If you have any suggestions for improvement, or can point out any mistakes that you have found in the instructions, we will be most grateful for your comments.

Connection of a point in the device, system or installation to earth to protect against electric shock in the event of a fault. When installing a safety class 1 inverter (see Technical data), the ground conductor connection is required.

When connecting the ground conductor, ensure that it is secured against accidental disconnection. All the points listed in the chapter Connecting the inverter to the public grid (AC side) on page (→) must be observed. It must be ensured that when using the strain relief devices, the ground conductor is the last to be disconnected in the event of a possible failure. When connecting the ground conductor, the minimum cross-section requirements specified by the respective national standards and guidelines must be observed.

The inverter transforms the direct current generated by the PV modules into alternating current. This alternating current is fed into the public grid and synchronized with the mains voltage in use. Moreover, the solar energy can also be stored in a connected battery for later use.

The inverter is intended for use in grid-connected photovoltaic systems. The inverter has backup power functions and switches to backup power mode if it has been wired accordingly*.

The inverter automatically monitors the public grid. Whenever conditions in the electric grid are inconsistent with standard conditions (for example, grid switch-off, interruption), the inverter will immediately stop producing power and interrupt the supply of power into the grid.
The grid is monitored by monitoring the voltage, frequency and islanding conditions.

After installation and commissioning, the inverter's operation is fully automatic;
the inverter draws the maximum possible power from the PV modules.
Depending on the operating point, this power is used in the home, stored in a battery* or fed into the grid.

As soon as the energy provided by the PV modules is no longer sufficient, the power from the battery is fed into the home. Depending on the setting, power may also be obtained from the public grid in order to charge the battery*.

When its temperature gets too high, the inverter automatically reduces the output or charging power, or switches off completely, in order to protect itself.
Reasons for the temperature being too high include a high ambient temperature or insufficient heat dissipation (for example, inadequate heat dissipation when installed in switch cabinets).

The inverter transforms the direct current generated by the PV modules into alternating current. This alternating current is fed into the public grid and synchronized with the mains voltage in use. Moreover, the solar energy can also be stored in a connected battery for later use.

The inverter is intended for use in grid-connected photovoltaic systems. The inverter has backup power functions and switches to backup power mode if it has been wired accordingly*.

The inverter automatically monitors the public grid. Whenever conditions in the electric grid are inconsistent with standard conditions (for example, grid switch-off, interruption), the inverter will immediately stop producing power and interrupt the supply of power into the grid.
The grid is monitored by monitoring the voltage, frequency and islanding conditions.

After installation and commissioning, the inverter's operation is fully automatic;
the inverter draws the maximum possible power from the PV modules.
Depending on the operating point, this power is used in the home, stored in a battery* or fed into the grid.

As soon as the energy provided by the PV modules is no longer sufficient, the power from the battery is fed into the home. Depending on the setting, power may also be obtained from the public grid in order to charge the battery*.

When its temperature gets too high, the inverter automatically reduces the output or charging power, or switches off completely, in order to protect itself.
Reasons for the temperature being too high include a high ambient temperature or insufficient heat dissipation (for example, inadequate heat dissipation when installed in switch cabinets).

The inverter transforms the direct current generated by the PV modules into alternating current. This alternating current is fed into the public grid and synchronized with the mains voltage in use. Moreover, the solar energy can also be stored in a connected battery for later use.

The inverter is intended for use in grid-connected photovoltaic systems. The inverter has backup power functions and switches to backup power mode if it has been wired accordingly*.

The inverter automatically monitors the public grid. Whenever conditions in the electric grid are inconsistent with standard conditions (for example, grid switch-off, interruption), the inverter will immediately stop producing power and interrupt the supply of power into the grid.
The grid is monitored by monitoring the voltage, frequency and islanding conditions.

After installation and commissioning, the inverter's operation is fully automatic;
the inverter draws the maximum possible power from the PV modules.
Depending on the operating point, this power is used in the home, stored in a battery* or fed into the grid.

As soon as the energy provided by the PV modules is no longer sufficient, the power from the battery is fed into the home. Depending on the setting, power may also be obtained from the public grid in order to charge the battery*.

When its temperature gets too high, the inverter automatically reduces the output or charging power, or switches off completely, in order to protect itself.
Reasons for the temperature being too high include a high ambient temperature or insufficient heat dissipation (for example, inadequate heat dissipation when installed in switch cabinets).

With Fronius UP*, the inverter can be expanded by the authorised specialist to include optionally available functions (see chapter Function overview).

• Utilisation for any other purpose, or in any other manner
• Alterations to the inverter are not permitted unless expressly recommended by Fronius
• Installation of components is not permitted unless expressly recommended or sold by Fronius

The manufacturer is not responsible for any damage resulting from improper use.
All warranty claims are considered void in such cases.

• Carefully reading and obeying all the instructions, as well as safety and danger notices in the Operating Instructions
• Installation in accordance with chapter "Installation" from page (→)

When configuring the photovoltaic system, make sure that all components of the photovoltaic system are operating exclusively within their permissible operating range.

Observe all measures recommended by the PV module manufacturer to permanently maintain the PV module properties.

Observe the grid operator's regulations for energy fed into the grid and connection methods.

• Backup power mode may be in operation for at least 2000 hours
• Backup power mode may be in operation for more than 2000 operating hours if 20% of the duration of the inverter's grid power feed operation is not exceeded at the relevant time.

With Fronius Solar.web or Fronius Solar.web Premium, the PV system can be easily monitored and analysed by the system owner and installer. If configured accordingly, the inverter transmits data such as power, yields, load, and energy balance to Fronius Solar.web. For more information see Solar.web - monitoring & analysis.

Configuration is carried out via the setup wizard, see chapter Installation with the app on page (→) or Installation using the web browser on page (→).

• Internet connection (download: min. 512 kBit/s, upload: min. 256 kBit/s)*.
• User account on solarweb.com.
• Completed configuration via the setup wizard.

In order to be able to obtain the highest rate of self-consumption with your PV system, a battery can be used to store excess energy. The battery is coupled to the inverter on the direct current side. Multiple current conversion is therefore not required, and the efficiency is increased.

IMPORTANT!
In backup power mode, an increased nominal frequency is used in order to prevent undesired parallel operation with other power generators.

• Supply loads in the house
• Store excess energy in the battery and/or feed it into the grid
• Supply connected loads in the event of a power failure

IMPORTANT!
In the fully equipped hybrid PV system with a Fronius Ohmpilot, the Ohmpilot cannot be operated in the event of a power failure for regulatory reasons. It is therefore sensible to install the Ohmpilot outside of the backup power branch.

In the hybrid photovoltaic system, batteries must only be connected to one inverter with battery support. Batteries cannot be split between multiple inverters with battery support. However, depending on the battery manufacturer, several batteries can be combined on one inverter.

In the hybrid photovoltaic system, batteries must only be connected to one inverter with battery support. Batteries cannot be split between multiple inverters with battery support. However, depending on the battery manufacturer, several batteries can be combined on one inverter.

In the case of hybrid inverters, there are four different energy flow directions:

* depending on the settings and local standards and regulations.

Battery systems distinguish different operating states. In this case, the relevant current operating state is displayed on the website of the inverter or in Solar.web.

Energy saving mode (standby mode) is used to reduce the self-consumption of the system. Both the inverter and the battery automatically switch to energy saving mode under certain conditions.

The inverter switches to energy saving mode if the battery is flat and no PV power is available. Only the inverter's communication with the Fronius Smart Meter and Fronius Solar.web is maintained.

Energy saving mode (standby mode) is used to reduce the self-consumption of the system. Both the inverter and the battery automatically switch to energy saving mode under certain conditions.

The inverter switches to energy saving mode if the battery is flat and no PV power is available. Only the inverter's communication with the Fronius Smart Meter and Fronius Solar.web is maintained.

If all the switch-off conditions are met, the battery switches into energy saving mode within ten minutes. This time delay ensures that the inverter can at least be restarted.

		The battery state of charge is less than or equal to the input minimum state of charge.
		The current charging or discharging power of the battery is less than 100 W.
		Less than 50 W is available for charging the battery. The power of feeding into the public grid is at least 50 W less than the power currently required in the home network.

The inverter automatically switches into energy saving mode, following the battery.

• Energy saving mode is no longer permissible owing to a changed setting on the user interface of the inverter.
• If dynamic power reduction of 0 is set, or if the system is operating in backup power mode, the power of feeding into the public grid is always less than the required power in the home network.
  There is a separate condition for this case (dynamic power reduction < 300 W or active backup power mode): if the PV power is above a specified threshold, energy saving mode is ended.
• Battery charging from the public grid is requested via the website.
• The battery is being recharged in order to restore the minimum state of charge or perform calibration.

If the inverter does not operate for 12 minutes (e.g. fault), or there is an interruption in the electrical connection between the inverter and the battery and there is no backup power mode, the battery switches to energy-saving mode in any case. This reduces self discharge of the battery.

• Operating LED for the inverter lights up orange (see Button functions and LED status indicator on page (→)).
• The website of the inverter can be reached.
• All the available data is saved and transmitted to Solar.web.
• The real-time data can be seen on Solar.web.

Energy saving mode is shown on the website of the inverter and in Solar.web by an "i" beside the battery symbol in the system overview.

Fronius explicitly points out that the third-party batteries are not Fronius products. Fronius is not the manufacturer, distributor or retailer of these batteries. Fronius accepts no liability and offers no service or guarantees for these batteries.

• Update battery software – see the battery documentation.
• Update inverter firmware – see Update on page (→).

Before installation and commissioning, read this document and the Installation Instructions for the external battery.

All the documents relating to the inverter can be found at the following address:
https://www.fronius.com/en/solar-energy/installers-partners/service-support/tech-support

The documentation for the BYD Battery-Box Premium is enclosed with the third-party battery or can be obtained from the battery manufacturer and its service partners.

BYD Battery-Box Premium HVS	5.1	7.7	10.2	12.8
Fronius Symo GEN24 6.0 - 10.0*
Fronius Symo GEN24 6.0 - 10.0 Plus
Number of battery modules	2	3	4	5
Battery parallel operation**

BYD Battery-Box Premium HVM	8.3	11.0	13.8	16.6	19.3	22.1
Fronius Symo GEN24 6.0 - 10.0*
Fronius Symo GEN24 6.0 - 10.0 Plus
Number of battery modules	3	4	5	6	7	8
Battery parallel operation**

IMPORTANT! To ensure reliable operation with a BYD Battery-Box Premium, the following switch-on sequence for the system must always be observed.

1

Switch on the battery.

2

Set the DC disconnector to the "On" switch position. Switch on the automatic circuit breaker.

Fronius explicitly points out that the third-party batteries are not Fronius products. Fronius is not the manufacturer, distributor or retailer of these batteries. Fronius accepts no liability and offers no service or guarantees for these batteries.

• Update battery software – see the battery documentation.
• Update inverter firmware – see Update on page (→).

Before installation and commissioning, read this document and the Installation Instructions for the external battery.

All the documents relating to the inverter can be found at the following address:
https://www.fronius.com/en/solar-energy/installers-partners/service-support/tech-support

The documentation for the BYD Battery-Box Premium is enclosed with the third-party battery or can be obtained from the battery manufacturer and its service partners.

BYD Battery-Box Premium HVS	5.1	7.7	10.2	12.8
Fronius Symo GEN24 6.0 - 10.0*
Fronius Symo GEN24 6.0 - 10.0 Plus
Number of battery modules	2	3	4	5
Battery parallel operation**

BYD Battery-Box Premium HVM	8.3	11.0	13.8	16.6	19.3	22.1
Fronius Symo GEN24 6.0 - 10.0*
Fronius Symo GEN24 6.0 - 10.0 Plus
Number of battery modules	3	4	5	6	7	8
Battery parallel operation**

IMPORTANT! To ensure reliable operation with a BYD Battery-Box Premium, the following switch-on sequence for the system must always be observed.

1

Switch on the battery.

2

Set the DC disconnector to the "On" switch position. Switch on the automatic circuit breaker.

There is no energy available from the PV modules or from the public grid. If backup power operation or battery operation are not possible (e.g. deep discharge protection of the battery), the inverter and battery switch off.

There is no energy available from the PV modules or from the public grid. If backup power operation or battery operation are not possible (e.g. deep discharge protection of the battery), the inverter and battery switch off.

Status codes about the inactive state of the battery are displayed on the user interface of the inverter or sent via Solar.web by means of SMS or e-mail (only if notification via Solar.web is configured accordingly).

As soon as energy is available again, the inverter starts operation automatically; however the battery must be started manually. The switch-on sequence must be observed for this, see chapter Suitable battery on page (→).

The inverter requires energy from the battery to start backup power operation. This is done manually on the battery; further information on the power supply for restarting the inverter via the battery can be found in the battery manufacturer's Operating Instructions.

The inverter offers the option to use the integrated AC relays as coupling switches in conjunction with a central grid and system protection unit (in accordance with VDE-AR-N 4105:2018:11 §6.4.1). For this purpose, the central trigger device (switch) must be integrated into the WSD chain as described in the chapter "WSD (Wired Shut Down)".

The inverter offers the option to use the integrated AC relays as coupling switches in conjunction with a central grid and system protection unit (in accordance with VDE-AR-N 4105:2018:11 §6.4.1). For this purpose, the central trigger device (switch) must be integrated into the WSD chain as described in the chapter "WSD (Wired Shut Down)".

The wired shutdown (WSD) interrupts the inverter feeding energy into the grid if the trigger device (switch) has been activated.

If an inverter (secondary device) fails, it is bypassed and the other inverters continue operating. If a second inverter (secondary device) or the inverter (primary device) fails, the operation of the entire WSD chain is interrupted.

For installation, see Installing the WSD (wired shutdown) on page (→).

The inverter is equipped with a universal current-sensitive residual current monitoring unit (RCMU = Residual Current Monitoring Unit) in accordance with IEC 62109-2.
This device monitors residual currents from the PV module to the AC output of the inverter and disconnects the inverter from the grid in the event of unauthorised residual current.

The inverter is equipped with an integrated surge protective device on the DC and AC side in accordance with IEC 62109-2. The surge protective device protects the system against damage in the event of an overvoltage.

The connection area divider separates the high-voltage conductors (DC and AC) from the signal lines. To make it easier to reach the connection area, the divider can be removed for the connection work, and must be re-inserted.

(1)	Integrated cable duct
(2)	Recesses for removing the connection area divider
(3)	Snap tabs for locking/unlocking
(4)	Defined breaking point for the Datcom connection

The integrated cable duct (1) allows for the lines to be laid from one area of the inverter to the other. As a result, multiple inverters can be easily installed next to each other.

On the V+/GND pin, it is possible to feed in a voltage of around 12.5 - 24 V (+ max. 20%) with an external power supply. The outputs IO 0 - 5 can then be operated with the external voltage. A maximum of 1 A can be drawn per output, with a maximum of 3 A allowed in total. The fuse protection must be located externally.

IMPORTANT!
If the total output (6 W) is exceeded, the inverter switches off the entire external power supply.

IMPORTANT!
If several backup power variants are available, please note that only one backup power variant may be installed and configured.

With the PV Point, in the event of a failure of the public grid, single-phase electrical devices can be connected to the Opportunity Power (OP) terminal and supplied with a maximum power of 3 kW, if enough power is available from the solar modules or an optional battery. In grid-connected operation, the OP terminal is not supplied with voltage, therefore the connected loads will not be supplied with power in this operating mode.

IMPORTANT!
A relay-based network switching setup is not possible.

IMPORTANT!
If several backup power variants are available, please note that only one backup power variant may be installed and configured.

With the PV Point, in the event of a failure of the public grid, single-phase electrical devices can be connected to the Opportunity Power (OP) terminal and supplied with a maximum power of 3 kW, if enough power is available from the solar modules or an optional battery. In grid-connected operation, the OP terminal is not supplied with voltage, therefore the connected loads will not be supplied with power in this operating mode.

IMPORTANT!
A relay-based network switching setup is not possible.

IMPORTANT!
If several backup power variants are available, please note that only one backup power variant may be installed and configured.

With the PV Point, in the event of a failure of the public grid, single-phase electrical devices can be connected to the Opportunity Power (OP) terminal and supplied with a maximum power of 3 kW, if enough power is available from the solar modules or an optional battery. In grid-connected operation, the OP terminal is not supplied with voltage, therefore the connected loads will not be supplied with power in this operating mode.

IMPORTANT!
A relay-based network switching setup is not possible.

The inverter can provide 120 to 240 V at the PV Point. A corresponding configuration must be set up during commissioning.

At 120 to 240 V output voltage, a maximum of 13 A AC continuous current is available.

For example:
120 V = max. 1.5 kW
230 V = max. 3 kW

In backup power mode, some electrical appliances cannot function properly as starting currents are too high (for example, fridges and freezers). It is recommended to switch off non-essential loads during backup power mode. Overload capacity of 35% is possible for a duration of 5 seconds, depending on the capacity of the solar modules and/or the battery at that moment in time.

There is a brief interruption when switching from grid-connected mode to backup power mode. For this reason, the backup power function cannot be used as an uninterruptible power supply, for example for computers.

If no energy from the battery or the solar modules is available in backup power mode, backup power mode ends automatically. If sufficient energy becomes available from the solar modules once again, backup power mode starts again automatically.

In the event of excessive consumption, backup power mode is stopped and the "backup power overload" status code is displayed on the inverter's LED status indicator. The maximum power in backup power mode according to the technical data must be observed.

IMPORTANT!
If several backup power variants are available, please note that only one backup power variant may be installed and configured.

• The inverter must support the backup power variant – Full Backup (see chapter Function overview on page (→)).
• A battery suitable for backup power use must be installed and configured.
• Correct cabling of the backup power system in the electrical installation or usage of a switch box from Enwitec (see chapter Components for automatic Full Backup backup power changeover on page (→) or Circuit diagrams on page (→)).
• Mount and configure the Fronius Smart Meter at the feed-in point.
• Attach a warning notice for the backup power supply (https://www.fronius.com/en/search-page, item number: 42,0409,0275) on the electrical distributor.
• Apply the necessary settings in the "Devices and system components" → "Functions and pins" → "Backup power" menu area and activate backup power.
• Follow the backup power checklist (https://www.fronius.com/en/search-page, item number: 42,0426,0365) step by step and confirm.

IMPORTANT!
If several backup power variants are available, please note that only one backup power variant may be installed and configured.

• The inverter must support the backup power variant – Full Backup (see chapter Function overview on page (→)).
• A battery suitable for backup power use must be installed and configured.
• Correct cabling of the backup power system in the electrical installation or usage of a switch box from Enwitec (see chapter Components for automatic Full Backup backup power changeover on page (→) or Circuit diagrams on page (→)).
• Mount and configure the Fronius Smart Meter at the feed-in point.
• Attach a warning notice for the backup power supply (https://www.fronius.com/en/search-page, item number: 42,0409,0275) on the electrical distributor.
• Apply the necessary settings in the "Devices and system components" → "Functions and pins" → "Backup power" menu area and activate backup power.
• Follow the backup power checklist (https://www.fronius.com/en/search-page, item number: 42,0426,0365) step by step and confirm.

IMPORTANT!
If several backup power variants are available, please note that only one backup power variant may be installed and configured.

• The inverter must support the backup power variant – Full Backup (see chapter Function overview on page (→)).
• A battery suitable for backup power use must be installed and configured.
• Correct cabling of the backup power system in the electrical installation or usage of a switch box from Enwitec (see chapter Components for automatic Full Backup backup power changeover on page (→) or Circuit diagrams on page (→)).
• Mount and configure the Fronius Smart Meter at the feed-in point.
• Attach a warning notice for the backup power supply (https://www.fronius.com/en/search-page, item number: 42,0409,0275) on the electrical distributor.
• Apply the necessary settings in the "Devices and system components" → "Functions and pins" → "Backup power" menu area and activate backup power.
• Follow the backup power checklist (https://www.fronius.com/en/search-page, item number: 42,0426,0365) step by step and confirm.

1. The public grid is monitored by the inverter's internal grid and system protection unit and by the Fronius Smart Meter connected to it.
2. The public grid fails or specific grid parameters are dropped below or exceeded.
3. The inverter carries out the measures necessary according to the country standard and then switches off.
4. The inverter starts backup power mode after a checking period.
5. All loads in the household that are in the backup power circuit are supplied by the battery and the PV modules. The remaining loads are not supplied with power and are safely isolated.
   

1. The inverter is operating in backup power mode.
2. The public grid is functioning correctly again.
3. The Fronius Smart Meter monitors the grid parameters on the public grid and passes this information to the inverter.
4. The stability of the returned public grid is determined by checking the measured values of the Fronius Smart Meter.
5. The inverter ends backup power mode.
6. All circuits are reconnected to the public grid and are supplied by the grid.
7. The inverter can start feeding energy into the grid again after performing the grid checks required by the relevant standard.

• The battery is discharged to the minimum state of charge and no energy is coming from the PV modules.
• The inverter is set to energy saving mode (standby mode).

• Enough energy is available from the solar modules.
• The public grid is functioning again.
• The battery is switched off and on.

• Measuring and transferring the required parameters for energy management and Solar.web by the Fronius Smart Meter.
• Disconnecting from the public grid to enable operation in backup power mode if the grid parameters are outside the country-specific standards.
• Reconnecting to the public grid when the grid parameters are within the limits specified by the country-specific standards.
• Option of having a separate backup power circuit or several backup power circuits that are supplied even during failure of the public grid. The total load of the backup power circuits must not exceed the nominal output of the inverter. Furthermore, the performance of the connected battery must also be considered.

• Measuring and transferring the required parameters for energy management and Solar.web by the Fronius Smart Meter.
• Disconnecting from the public grid to enable operation in backup power mode if the grid parameters are outside the country-specific standards.
• Reconnecting to the public grid when the grid parameters are within the limits specified by the country-specific standards.
• Option of having a separate backup power circuit or several backup power circuits that are supplied even during failure of the public grid. The total load of the backup power circuits must not exceed the nominal output of the inverter. Furthermore, the performance of the connected battery must also be considered.

1. The public grid is monitored by the inverter's internal grid and system protection unit and by the Fronius Smart Meter connected to it.
2. Failure of the public grid.
3. The inverter carries out the necessary measures according to the country standard and then switches off.
   Contactors K1 and K2 drop out. This disconnects the backup power circuits and the inverter from the rest of the home network and from the public grid, as the main contacts of the contactors K1 and K2 3-pin open. The inverter activates relay K3, which interrupts the supply to contactors K1 and K2. This prevents unintentional activation of contactors K1 and K2 and thus a grid connection when voltage is restored in the grid. The NC auxiliary contacts of contactors K1 and K2 send feedback to the inverter that the contactors are open (a condition for starting backup power mode).
4. The NO contact of relay K3 gives additional feedback to the inverter on whether the locking was successfully performed by relay K3.
5. The inverter decides based on the contactors' feedback as well as the measurements on the inverter terminals and the Smart Meter that backup power mode can be started.
6. After all the required activation tests have been carried out, the inverter starts backup power mode.
7. All loads in the backup power circuits are supplied with power. The remaining loads are not supplied with power and are safely isolated.

1. The inverter is operating in backup power mode. The contactors K1 and K2 to the public grid are open.
2. Public grid available again.
3. The Fronius Smart Meter monitors the grid parameters on the public grid and passes this information to the inverter.
4. The stability of the returned public grid is determined by checking the measured values of the Fronius Smart Meter.
5. The inverter ends backup power mode and disconnects the outputs.
6. The inverter deactivates K3. The contactors K1 and K2 are reactivated.
7. All circuits are reconnected to the public grid and are supplied by the grid. The inverter does not feed anything into the grid at this time.
8. The inverter can start feeding energy into the grid again after performing the grid checks required by the relevant standard.

• Measuring and transferring the required parameters for energy management and Solar.web by the Fronius Smart Meter.
• Disconnecting from the public grid to enable operation in backup power mode if the grid parameters are outside the country-specific standards.
• Reconnecting to the public grid when the grid parameters are within the limits specified by the country-specific standards.
• Establishing a proper ground connection for backup power mode to ensure the protection devices function correctly.
• Option of having a separate backup power circuit or several backup power circuits that are supplied even during failure of the public grid. The total load of the backup power circuits must not exceed the nominal output of the inverter. Furthermore, the performance of the connected battery must also be considered.

• Measuring and transferring the required parameters for energy management and Solar.web by the Fronius Smart Meter.
• Disconnecting from the public grid to enable operation in backup power mode if the grid parameters are outside the country-specific standards.
• Reconnecting to the public grid when the grid parameters are within the limits specified by the country-specific standards.
• Establishing a proper ground connection for backup power mode to ensure the protection devices function correctly.
• Option of having a separate backup power circuit or several backup power circuits that are supplied even during failure of the public grid. The total load of the backup power circuits must not exceed the nominal output of the inverter. Furthermore, the performance of the connected battery must also be considered.

1. The public grid is monitored by the inverter's internal grid and system protection unit and by the Fronius Smart Meter connected to it.
2. Failure of the public grid.
3. The inverter carries out the necessary measures according to the country standard and then switches off.
   Contactors K1, K2, K4 and K5 drop out. This disconnects the backup power circuits and the inverter from the rest of the home network and from the public grid, as the main contacts of the contactors K1 and K2 open at all pins. The NC auxiliary contacts of contactors K1 and K2 send feedback to the inverter that the contactors are open (a condition for starting backup power mode).
4. The NC main contacts of contactors K4 and K5 are closed, establishing a connection between the neutral conductor and the ground conductor. The two other NC main contacts of contactors K4 and K5 give feedback to the inverter that the ground connection has been established correctly (a condition for starting backup power mode).
5. The inverter activates relay K3, which interrupts the supply to contactors K1, K2, K4 and K5. This prevents unintentional activation of contactors K1, K2, K4 and K5 and thus a grid connection when voltage is restored in the grid.
6. The NO contact of relay K3 gives additional feedback to the inverter on whether the locking was successfully performed by relay K3.
7. The inverter decides based on the contactor's feedback as well as the measurements on the inverter terminals and the Smart Meter that the emergency power mode can be activated.
8. After all the required activation tests have been carried out, the inverter starts backup power mode.
9. All loads in the backup power circuits are supplied with power. The remaining loads are not supplied with power and are safely isolated.

1. The inverter is operating in backup power mode. The contactors K1 and K2 to the public grid are open.
2. Public grid available again.
3. The Fronius Smart Meter monitors the grid parameters on the public grid and passes this information to the inverter.
4. The stability of the returned public grid is determined by checking the measured values of the Fronius Smart Meter.
5. The inverter ends backup power mode and disconnects the outputs.
6. The inverter deactivates K3. Power is restored to contactors K1, K2, K4 and K5.
7. All circuits are reconnected to the public grid and are supplied by the grid. The inverter does not feed anything into the grid at this time.
8. The inverter can start feeding energy into the grid again after performing the grid checks required by the relevant standard.

• Measuring and transferring the required parameters for energy management and Solar.web by the Fronius Smart Meter.
• Monitoring of the voltage and frequency grid parameters by the inverter.
• Disconnecting from the public grid to enable operation in backup power mode if the grid parameters are outside the country-specific standards.
• Reconnecting to the public grid when the grid parameters are within the limits specified by the country-specific standards.
• Establishing a correct ground connection for backup power mode.
• Option of having a separate backup power circuit or several backup power circuits that are supplied even during failure of the public grid. The total load of the backup power circuits must not exceed the nominal output of the inverter. Furthermore, the performance of the connected battery must also be considered.

• Measuring and transferring the required parameters for energy management and Solar.web by the Fronius Smart Meter.
• Monitoring of the voltage and frequency grid parameters by the inverter.
• Disconnecting from the public grid to enable operation in backup power mode if the grid parameters are outside the country-specific standards.
• Reconnecting to the public grid when the grid parameters are within the limits specified by the country-specific standards.
• Establishing a correct ground connection for backup power mode.
• Option of having a separate backup power circuit or several backup power circuits that are supplied even during failure of the public grid. The total load of the backup power circuits must not exceed the nominal output of the inverter. Furthermore, the performance of the connected battery must also be considered.

1. The public grid is monitored by the inverter's internal grid and system protection unit and by an external grid and system protection unit.
2. Failure of the public grid
3. The inverter carries out the measures necessary according to the country standard and then switches off.
4. The external grid and system protection unit opens contactors K1 and K2 for grid monitoring. This disconnects the backup power circuits and the inverter from the rest of the home network and from the public grid, as the main contacts of the contactors K1 and K2 open at all pins. To ensure that the public grid has definitely been disconnected, the NC auxiliary contacts of contactor K1 give feedback to the external grid and system protection unit.
5. The NC main contact of contactors K4 and K5 is closed, establishing a connection between the neutral conductor and the ground conductor. The two other NC main contacts of contactors K4 and K5 give feedback to the inverter that the ground connection has been established correctly.
6. The inverter activates relay K3, which activates the remote input of the external grid and system protection unit via an NC contact. This prevents a connection to the public grid when voltage is restored in the grid.
7. The NO contact of relay K3 gives additional feedback to the inverter on whether the locking was successfully performed by relay K3.
8. The inverter decides based on the contactors' feedback as well as the measurement on the inverter terminals and the Smart Meter that backup power mode can be started.
9. The inverter starts backup power mode after a defined checking period.
10. All loads in the backup power circuits are supplied with power. The remaining loads are not supplied with power and are safely isolated.

1. The inverter is operating in backup power mode. The contactors K1 and K2 to the public grid are open.
2. Public grid available again.
3. The Fronius Smart Meter monitors the grid parameters on the public grid and passes this information to the inverter.
4. The stability of the returned public grid is determined by checking the measured values of the Fronius Smart Meter.
5. On the basis of adjustments that have been carried out, the inverter ends backup power mode and disconnects the outputs.
6. The inverter deactivates K3. Power is restored to contactors K1, K2, K4 and K5.
7. All circuits are reconnected to the public grid and are supplied by the grid. The inverter does not feed anything into the grid at this time.
8. The inverter can start feeding energy into the grid again after performing the grid checks required by the relevant standard.

Technical data, warning notices and safety symbols are affixed to the inverter. These warning notices and safety symbols must not be removed or painted over. They warn against incorrect operation which can lead to serious injury and damage.

A 4-digit number (coded production date) is printed on the rating plate at the very bottom, from which the production date can be calculated.
If you subtract the value 11 from the first two digits, you get the production year. The last two digits stand for the calendar week in which the device was produced.

Example:
Value on rating plate = 3206
32 - 11 = 21 → Production year 2021
06 = Calendar week 06

Symbols on the rating plate:
	CE mark – confirms compliance with applicable EU directives and regulations.
	UKCA mark – confirms compliance with applicable UK directives and regulations.
	WEEE mark – waste electrical and electronic equipment must be collected separately and recycled in an environmentally sound manner in accordance with the European Directive and national law.
	RCM mark – tested in accordance with the requirements of Australia and New Zealand.
	ICASA mark – tested in accordance with the requirements of the Independent Communications Authority of South Africa.
	CMIM mark – tested in accordance with IMANOR requirements for import regulations and compliance with Moroccan standards.

Safety symbols:
	Risk of serious injury and property 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 Operating Instructions for the system components of the photovoltaic system, especially the safety rules.
	Dangerous electrical voltage.
	Allow the capacitors of the inverter to discharge (2 minutes).

Warning notice text:

WARNING!
An electric shock can be fatal. Before opening the device, it must be disconnected and de-energized at the input and output.

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

		Only install on a solid, non-flammable surface.
		Max. ambient temperatures: -25 °C – +60 °C
		Relative humidity: 0-100%
		If the inverter is installed in a switch cabinet or similar enclosed space, ensure sufficient heat dissipation with forced-air ventilation. For detailed information on the dimensions of the inverter, see chapter Fronius Symo GEN24 6 - 10 kW on page (→).
When installing the inverter on the outer walls of cattle sheds, it is important to keep a minimum clearance of 2 m between all sides of the inverter and air vents and building openings.
The following surfaces are permissible for installation: Walls (corrugated metal walls [mounting rails], brick walls, concrete walls, or other non-flammable surfaces sufficiently capable of bearing loads) Poles (installed using mounting rails, behind the solar modules directly on the PV mounting system) Flat roofs (if this is for a film roof, make sure that the films comply with the fire protection requirements and are not highly flammable. Ensure compliance with the national provisions.) Covered car park roofs (no overhead installation)

		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. The inverter should be installed in a protected location, for example, near the solar modules or under an overhanging roof.
		IMPORTANT! The inverter must not be installed or used at altitudes above 4000 m.
		Do not install the inverter in: Areas where it may be exposed to ammonia, corrosive gases, acids or salts (e.g. fertiliser storage areas, vent openings for livestock stables, 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: Areas where there is an increased risk of accidents from farm animals (horses, cattle, sheep, pigs, etc.) Stables or adjoining areas Storage areas for hay, straw, chaff, animal feed, fertilizers, etc.
		The inverter is essentially designed to be dustproof (IP 66). In areas of high dust accumulation, dust deposits may collect on the cooling surfaces, and thus impair the thermal performance. Regular cleaning is required in this case, see chapter Operation in dusty environments on page (→). 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

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

		Only install on a solid, non-flammable surface.
		Max. ambient temperatures: -25 °C – +60 °C
		Relative humidity: 0-100%
		If the inverter is installed in a switch cabinet or similar enclosed space, ensure sufficient heat dissipation with forced-air ventilation. For detailed information on the dimensions of the inverter, see chapter Fronius Symo GEN24 6 - 10 kW on page (→).
When installing the inverter on the outer walls of cattle sheds, it is important to keep a minimum clearance of 2 m between all sides of the inverter and air vents and building openings.
The following surfaces are permissible for installation: Walls (corrugated metal walls [mounting rails], brick walls, concrete walls, or other non-flammable surfaces sufficiently capable of bearing loads) Poles (installed using mounting rails, behind the solar modules directly on the PV mounting system) Flat roofs (if this is for a film roof, make sure that the films comply with the fire protection requirements and are not highly flammable. Ensure compliance with the national provisions.) Covered car park roofs (no overhead installation)

		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. The inverter should be installed in a protected location, for example, near the solar modules or under an overhanging roof.
		IMPORTANT! The inverter must not be installed or used at altitudes above 4000 m.
		Do not install the inverter in: Areas where it may be exposed to ammonia, corrosive gases, acids or salts (e.g. fertiliser storage areas, vent openings for livestock stables, 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: Areas where there is an increased risk of accidents from farm animals (horses, cattle, sheep, pigs, etc.) Stables or adjoining areas Storage areas for hay, straw, chaff, animal feed, fertilizers, etc.
		The inverter is essentially designed to be dustproof (IP 66). In areas of high dust accumulation, dust deposits may collect on the cooling surfaces, and thus impair the thermal performance. Regular cleaning is required in this case, see chapter Operation in dusty environments on page (→). 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

IMPORTANT!
Refer to the manufacturer's documents for the suitable location for third-party batteries.

Use the corresponding fixing materials depending on the subsurface and observe the screw dimension recommendations for the mounting bracket.
The installer is responsible for selecting the right type of fixing.

Use the corresponding fixing materials depending on the subsurface and observe the screw dimension recommendations for the mounting bracket.
The installer is responsible for selecting the right type of fixing.

IMPORTANT!
When installing the mounting bracket, make sure that it is installed with the arrow pointing upwards.

1

2

3

Cables with the following design can be connected to the terminals of the inverter:

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

Cables with the following design can be connected to the terminals of the inverter:

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

Cables with the following design can be connected to the terminals of the inverter:

Copper: round, solid Copper: round, fine-stranded

IMPORTANT!
Connect the individual conductors to an appropriate ferrule if several individual conductors are connected to one input of the push-in terminals.

For a standard M32 metric screw joint with a reducer:
Cable diameter from 7-15 mm

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

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 M32 x 1.5 KB 18–25.

Cable diameter for the strain-relief device: max. 9 mm.
Cable diameter for the connection to the push-in terminal: max. 6 mm

IMPORTANT!
For double-insulated cables with a cable diameter over 6 mm, the external insulation layer must be removed to connect to the push-in terminal.

IMPORTANT!
The 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 by making it somewhat longer and by laying it in a loop.

1

Turn off the automatic circuit breaker.

2

Make sure that the DC disconnector is in the "Off" switch setting.
Loosen the five screws of the connection area cover by rotating them 180° to the left using a screwdriver (TX20).
Remove the connection area cover from the device.

3

Press the lock on the back of the terminal and remove the AC terminal.
Route the mains cable from below through the strain-relief device located on the right side and the ferrite core.

IMPORTANT!
The ground conductor must not be routed through the ferrite core and must be connected with a loop so that if the strain relief device fails, the ground conductor is disconnected last.
For more information on the strain relief device, see chapter Cross section of the AC cable on page (→).

4

Strip the insulation of the single conductors by 12 mm.
The cable cross section must be selected in accordance with the instructions in Permitted cables from page (→).
Lift to open the terminal's operating lever and insert the stripped single conductor into the slot provided as far as it will go. Then close the operating lever until it engages.

IMPORTANT!
Only one conductor may be connected to each pin. The AC cables can be connected to the AC terminal without ferrules.

5

L1	Phase conductor
L2	Phase conductor
L3	Phase conductor
N	Neutral conductor
PE	Ground conductor

6

Insert the AC terminal into the AC slot until it engages. Fasten the union nut of the strain-relief device with a torque of 6-7 Nm.

To enable suitable solar 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 solar 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 solar modules must be observed.
• Exact values for sizing the solar modules can be obtained using suitable calculation tools, such as the Fronius Solar.configurator.

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.

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

IMPORTANT!
Solar module strings must not be earthed.

To enable suitable solar 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 solar 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 solar modules must be observed.
• Exact values for sizing the solar modules can be obtained using suitable calculation tools, such as the Fronius Solar.configurator.

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.

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

IMPORTANT!
Solar module strings must not be earthed.

2 independent PV inputs (PV 1 and PV 2) are available. These can be connected to a different number of modules.

When using for the first time, set up the PV generator according to the respective configuration (also possible later in the “System configuration” menu under the “Components” menu item).

IMPORTANT!
The installation must be carried out in accordance with the nationally applicable standards and directives. If the Arc Fault Circuit Interrupter integrated in the inverter is used for the requirement according to IEC 63027 for arc detection, the solar module strings must not be combined in front of the inverter.

Total current less than or equal to 25 A.

PV generator settings:
PV 1: ON
PV 2: OFF

Combined solar module strings with total current less than or equal to 25 A.

PV generator settings:
PV 1: ON
PV 2: OFF

Combined solar module strings with total current greater than 25 A.

PV generator settings:
PV 1: ON
PV 2: OFF
PV 1 + PV 2 (connected in parallel): ON

IMPORTANT!
The maximum current load of a single terminal is 25 A. PV connection strings with a total current of more than 25 A must be split between both PV inputs upstream of the terminals (≤ 56.25 A). The plug connection for splitting the total current must be sufficiently dimensioned, suitable and correctly installed. Splitting the current by bridging from PV 1 to PV 2 at the terminal is not permitted.

PV 1 ≤ 37.5 A / PV 2 ≤ 18.75 A

PV generator settings:
PV 1: ON
PV 2: ON

IMPORTANT!
Prior to installing a battery, ensure that the battery is switched off. Refer to the manufacturer's documents for the max. length of the DC cables for installing third-party batteries.

1

Manually push the BAT cables through the DC bushings.

* Connect the ground conductor of the battery to an external point (e.g. switch cabinet). In doing so, the minimum cross section of the battery's ground conductor must be observed.

IMPORTANT!
Before stripping the insulation, push the cables through the DC bushings to prevent individual wires being bent or broken.

2

3

4

Select the cable cross section in accordance with the instructions in Permitted cables from page (→).
Strip the insulation of the single conductors by 12 mm. Lift to open the terminal's operating lever and insert the stripped single conductor into the slot provided, in each case as far as it will go. Then close the operating lever until it engages.

NOTE!

No multi-wire connections are possible with this terminal type.

Only one conductor may be connected to each pin. The DC cables can be connected to the DC terminals without ferrules.

5

CAUTION!

Risk due to overvoltage when using other slots on the terminal.

This may result in damage to the battery and/or the solar module due to discharge.

Only use the designated slots for battery connection.

 

6

CAUTION!

Danger due to polarity reversal at the terminals.

Serious substantive damage to the PV system may result.

Use a suitable measuring instrument to check the polarity of the DC cabling when the battery is switched on.

The maximum voltage for the battery input must not be exceeded (see Technical data on page (→)).

7

Insert the DC terminals into the respective slot until they engage.

8

Fasten the screws of the cable guide to the housing using a screwdriver (TX20) and a torque of 1.3-1.5 Nm.

NOTE!

Do not use a drill driver as this could cause overturning.

A possible consequence of overturning is, for example, damaging the strain-relief device.

IMPORTANT!
Information for connection on the battery side can be found in the Installation Instructions from the relevant manufacturer.

IMPORTANT!
The valid national laws, standards and provisions, as well as the specifications of the relevant grid operator are to be taken into account and applied.
It is highly recommended that the specific installation be agreed with the grid operator and explicitly approved by this operator. This obligation applies to system constructors in particular (e.g. installers).

IMPORTANT!
The valid national laws, standards and provisions, as well as the specifications of the relevant grid operator are to be taken into account and applied.
It is highly recommended that the specific installation be agreed with the grid operator and explicitly approved by this operator. This obligation applies to system constructors in particular (e.g. installers).

For the Circuit Diagram recommended by Fronius, see Circuit Diagram - PV Point (OP) on page (→).

1

Switch off the automatic circuit breaker and DC disconnector.

2

Make sure that the DC disconnector is in the "Off" switch setting.
Loosen the five screws of the connection area cover by rotating them 180° to the left using a screwdriver (TX20).
Remove the connection area cover from the device.

CAUTION!

Danger from faulty or incorrect holes.

This may lead to injuries to the eyes and hands as a result of flying debris and sharp edges, as well as damage to the inverter.

When drilling, wear suitable protective goggles.

Only use a step drill when drilling.

Ensure that nothing is damaged inside the device (for example connection block).

Adapt the diameter of the hole to match the corresponding connection.

Deburr the holes using a suitable tool.

Remove the drilling residues from the inverter.

3

Drill out the optional cable guide with a step drill.

4

Insert the strain-relief device into the hole and secure to the torque specified by the manufacturer.

5

Guide the mains cable through the strain-relief device from below.
Remove the OP terminal.

6

Strip the insulation of the single conductors by 12 mm.
The cable cross section must be between 1.5 mm² and 10 mm². Lift to open the terminal's operating lever and insert the stripped single conductor into the slot provided, all the way up to the stop. Then close the operating lever until it engages.

NOTE!

Only one conductor may be connected to each pin. The conductors can be connected without ferrules.

7

L1´	Phase conductor
N´	Neutral conductor
N´	PEN conductor

NOTE!

The PEN conductor must be produced with ends that are permanently marked blue, according to the national provisions, and have a cross section of 10 mm².

8

Fasten the ground conductor and PEN conductor to the ground electrode terminal using a screwdriver (TX20) and a torque of 1.8-2 Nm.

9

Insert the OP terminal into the OP slot until it engages. Tighten the union nut of the strain-relief device to the torque specified by the manufacturer.

The examples given in this document (in particular cabling variants and Circuit Diagrams) are suggestions only. These examples have been carefully developed and tested. They can therefore be used as a basis for real-life installation. Anyone following or using these examples does so at their own risk.

IMPORTANT!
The valid national laws, standards and provisions, as well as the specifications of the relevant grid operator are to be taken into account and applied.
It is highly recommended to coordinate the concrete examples implemented and in particular the specific installation with the grid operator to obtain their explicit approval. This obligation applies to system constructors in particular (e.g. installers).
The examples suggested here show a backup power supply with or without an external protection relay (external grid and system protection unit). Whether an external protection relay must be used or not is the decision of the respective grid operator.

IMPORTANT!
No uninterruptible power supply (UPS) must be operated in the backup power circuit. The Installation and Operating Instructions must be read carefully prior to use. If anything is unclear, contact your vendor immediately.

The examples given in this document (in particular cabling variants and Circuit Diagrams) are suggestions only. These examples have been carefully developed and tested. They can therefore be used as a basis for real-life installation. Anyone following or using these examples does so at their own risk.

IMPORTANT!
The valid national laws, standards and provisions, as well as the specifications of the relevant grid operator are to be taken into account and applied.
It is highly recommended to coordinate the concrete examples implemented and in particular the specific installation with the grid operator to obtain their explicit approval. This obligation applies to system constructors in particular (e.g. installers).
The examples suggested here show a backup power supply with or without an external protection relay (external grid and system protection unit). Whether an external protection relay must be used or not is the decision of the respective grid operator.

IMPORTANT!
No uninterruptible power supply (UPS) must be operated in the backup power circuit. The Installation and Operating Instructions must be read carefully prior to use. If anything is unclear, contact your vendor immediately.

Circuit Diagram
The Circuit Diagram for the 3-pin double separation - e.g. Austria, can be found on page (→) in the appendix of this document.
The Circuit Diagram for the 3-pin single separation - e.g. Australia, can be found in the appendix of this document on page (→).

Cabling of backup power circuit and non-backup power circuits

If not all the loads in the home need to be supplied in a backup power situation, the circuits need to be divided into backup power circuits and non-backup power circuits. The total load of the backup power circuits must not exceed the nominal output of the inverter.

The backup power circuits and non-backup power circuits must be fused separately according to the required safety measures (residual-current circuit breaker, automatic circuit breaker, etc.).
In backup power mode, only the backup power circuits are disconnected from the grid by contactors K1 and K2, 3-pin. The rest of the home network is not supplied with power in this case.

• The main contacts of contactors K1 and K2 must be installed between the Fronius Smart Meter and the inverter and the residual-current circuit breaker of the backup power circuits.
• The supply voltage for contactors K1 and K2 is provided by the public grid and must be connected to phase 1 (L1) after the Fronius Smart Meter and fused accordingly.
• An NC contact for the relay K3 interrupts the supply voltage to contactors K1 and K2. This prevents the backup power network of the inverter from being switched to the public grid.
• The NO contact of relay K3 gives feedback to the inverter on whether the locking was successfully performed by relay K3.
• Additional inverters or other AC sources can be installed in the backup power circuit after the main contacts of K1 and K2. The sources are not synchronised to the network of the inverter because this backup power network has a frequency of 53 Hz.
• The use of contactor K2 is optional in Australia.

Circuit Diagram
The Circuit Diagram for the 4-pin double separation - e.g. Germany, can be found in the appendix of this document on page (→)
The Circuit Diagram for the 4-pin single separation - e.g. France and Spain, can be found in the appendix of this document on page (→).

Cabling of backup power circuit and non-backup power circuits

If not all the loads in the home need to be supplied in a backup power situation, the circuits need to be divided into backup power circuits and non-backup power circuits. The total load of the backup power circuits must not exceed the nominal output of the inverter.

The backup power circuits and non-backup power circuits must be fused separately according to the required safety measures (residual-current circuit breaker, automatic circuit breaker, etc.).
In backup power mode, only the backup power circuits are disconnected at all pins from the grid by contactors K1 and K2; an earth connection is only established for these circuits. The rest of the home network is not supplied with power in this case.

• The main contacts of contactors K1 and K2 must be installed between the Fronius Smart Meter and the residual-current circuit breaker of the inverter and the residual-current circuit breaker of the backup power circuits.
• The supply voltage for contactors K1 and K2 is provided by the public grid and must be connected to phase 1 (L1) after the Fronius Smart Meter and fused accordingly.
• To ensure residual-current circuit breakers function in backup power mode, the connection between the neutral conductor and the ground conductor must be established as close as possible to the inverter, but in any case before the first residual-current circuit breaker. An NC contact is used for this purpose for each of the main contacts of contactors K4 and K5. This ensures that the ground connection is established as soon as the public grid connection is no longer available.
• As with contactor K1, the supply voltage for contactors K4 and K5 is provided via phase 1 (L1) of the public grid.
• An NC contact for the relay K3 interrupts the supply voltage to contactors K1, K2, K4 and K5. This prevents the ground connection from being immediately disconnected again when power returns to the public grid and the backup power network of the inverter from being switched to the public grid.
• The NO contact of relay K3 gives feedback to the inverter on whether the locking was successfully performed by relay K3.
• The use of contactor K2 is optional in France.
• Additional inverters or other AC sources can be installed in the backup power circuit after the main contacts of K1 and K2. The sources are not synchronised to the network of the inverter because this backup power network has a frequency of 53 Hz.

Circuit Diagram
The Circuit Diagram for the 4-pin double separation with ext. grid and system protection - e.g. Italy, can be found on page (→) in the appendix of this document.

Backup power circuit and non-backup power circuits

IMPORTANT!
Fronius Smart Meter US-480 must be used for these circuit variants.

The backup power circuits and non-backup power circuits must be fused separately according to the required safety measures (residual-current circuit breaker, automatic circuit breaker, etc.).
In backup power mode, only the backup power circuits are disconnected from the grid by contactors K1 and K2; an earth connection is only established for these circuits. The rest of the home network is not supplied with power in this case.

• The main contacts of contactors K1 and K2 must be installed between the Fronius Smart Meter and the residual-current circuit breaker of the inverter and the residual-current circuit breaker of the backup power circuits.
• The supply voltage for contactors K1 and K2 is provided by the public grid and must be connected to phase 1 (L1) after the Fronius Smart Meter and fused accordingly.
• Actuation of contactors K1 and K2 is carried out by the external grid and system protection unit.
• The external grid and system protection unit must be installed after the Fronius Smart Meter. Precise installation and wiring instructions for the external grid and system protection unit can be found in its separate Operating Instructions.
• The remote trip input of the external grid and system protection unit must be set to NC according to the manufacturer's Operating Instructions.
• To ensure residual-current circuit breakers function in backup power mode, the connection between the neutral conductor and the ground conductor must be established as close as possible to the inverter, but in any case before the first residual-current circuit breaker. An NC contact is used for this purpose for the main contacts of contactors K4 and K5. This ensures that the ground connection is established as soon as the public grid connection is no longer available.
• The supply voltage for contactors K1, K2, K4 and K5 is provided via phase 1 (L1) of the public grid and is switched via the external grid and system protection unit.
• An NC contact for relay K3, which activates the remote input of the external grid and system protection unit, interrupts the supply voltage to contactors K1, K2, K4 and K5. This prevents the ground connection from being immediately disconnected again when power returns to the public grid and the backup power network of the inverter from being switched to the public grid.
• The NO contact of relay K3 gives additional feedback to the inverter on whether the locking was successfully performed by relay K3.
• Additional inverters or other AC sources can be installed in the backup power circuit after the main contacts of K1 and K2. The sources are not synchronised to the network of the inverter because this backup power network has a frequency of 53 Hz.

Backup power mode should be tested once it has been installed and set up for the first time. A battery state of charge of over 30% is recommended when in test mode.

A description on how to run test mode can be found in the backup power checklist (https://www.fronius.com/en/search-page, item number: 42,0426,0365).

The inputs M0 and M1 can be selected for this purpose. A maximum of 4 Modbus participants can be connected to the Modbus terminal on inputs M0 and M1.

IMPORTANT!
Only one primary meter, one battery and one Ohmpilot can be connected per inverter. Due to the high data transfer of the battery, the battery occupies 2 participants. If the "Inverter control via Modbus" function is activated in the "Communication” "Modbus" menu, no Modbus participants are possible. It is not possible to send and receive data at the same time.

Example 1:

Input	Battery	Fronius Ohmpilot	Quantity Primary meter	Quantity Secondary meter
Modbus 0 (M0)			0	4
			0	2
			0	1
Modbus 1 (M1)			1	3

Example 2:

Input	Battery	Fronius Ohmpilot	Quantity Primary meter	Quantity Secondary meter
Modbus 0 (M0)			1	3
Modbus 1 (M1)			0	4
			0	2
			0	1

The inputs M0 and M1 can be selected for this purpose. A maximum of 4 Modbus participants can be connected to the Modbus terminal on inputs M0 and M1.

IMPORTANT!
Only one primary meter, one battery and one Ohmpilot can be connected per inverter. Due to the high data transfer of the battery, the battery occupies 2 participants. If the "Inverter control via Modbus" function is activated in the "Communication” "Modbus" menu, no Modbus participants are possible. It is not possible to send and receive data at the same time.

Example 1:

Input	Battery	Fronius Ohmpilot	Quantity Primary meter	Quantity Secondary meter
Modbus 0 (M0)			0	4
			0	2
			0	1
Modbus 1 (M1)			1	3

Example 2:

Input	Battery	Fronius Ohmpilot	Quantity Primary meter	Quantity Secondary meter
Modbus 0 (M0)			1	3
Modbus 1 (M1)			0	4
			0	2
			0	1

• Depending on the number and cross section of the wired data communication cables, remove the corresponding blanking plugs from the sealing insert and insert the data communication cables.
• Make sure that you insert the corresponding blanking plugs into any free openings on the sealing insert.

IMPORTANT!
Should the blanking plugs be missing or improperly fitted, then protection class IP66 cannot be guaranteed.

1

Undo the strain-relief device union nut and push out the sealing ring and the blanking plug from the inside of the device.

2

Open up the sealing ring at the location where the blanking plug is to be removed.

* Liberate the blanking plug by moving it sideways.

3

Guide the data cables first through the strain-relief device union nut and then through the housing opening.

4

Insert the sealing ring between the union nut and the housing opening. Press the data cables into the seal's cable guide. Then press in the seal until it reaches the underside of the strain-relief device.

5

Fasten the union nut of the strain-relief device with a torque of min. 2.5 - max. 4 Nm.

1

Strip 10 mm from the single conductors and mount the ferrules if necessary.

IMPORTANT!
Connect the individual conductors to an appropriate ferrule if several individual conductors are connected to one input of the push-in terminals.

2

Insert the cable into the respective slot and check the cable is securely retained.

IMPORTANT!
Use only twisted pairs for connecting "Data +/-" and "Enable +/-", see section Permitted cables for the data communication area on page (→).

Twist the cable shield and insert into the "SHIELD" slot.

IMPORTANT!
Improperly fitted shielding can cause data communication problems.

For the wiring proposal recommended by Fronius, see page (→).

It may be possible for the system to function without terminating resistors. However, owing to interference, the use of terminating resistors according to the following overview is recommended for trouble-free functioning.

For permissible cable and max. distances see chapter Permitted cables for the data communication area on page (→).

IMPORTANT!
Terminating resistors that are not positioned as illustrated can result in interference in the data communication. If the terminating resistor on the battery cannot be deactivated, the battery is to be set up at the bus end (see option 2, 3).

IMPORTANT!
The push-in WSD terminal in the inverter's connection area is delivered with a bypass ex works as standard. The bypass must be removed when installing a trigger device or a WSD chain.

 

The WSD switch of the first inverter with connected trigger device in the WSD chain must be in position 1 (primary device). The WSD switch of all other inverters should be in the 0 (secondary device) position.

Max. distance between two devices: 100 m
Max. number of devices: 28

* Floating contact of the trigger device (e.g. central grid and system protection). If several floating contacts are used in a WSD chain, they must be connected in series.

When using the inverter for the first time, various setup settings must be configured.

If the setup process is cancelled before the process is complete, any data that has been input up to this point is lost and the start screen with the installation wizard is shown again. If the process is interrupted, such as in the event of a power outage, the data is saved. Commissioning may be continued from the point at which the process was interrupted once the power supply has been restored. If the setup was interrupted, the inverter feeds energy into the grid at maximum 500 W and the operating status LED flashes yellow.

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 installer / Technical Support team.

The "Fronius Solar.start" app is needed for this installation method. Depending on the end device with which the installation will be carried out, download the app for the respective platform.

1Start the installation in the app.

2Select the product to which the connection should be established.

3Open the access point by touching the sensor once    → Communication LED: flashes blue.

4Follow and complete the installation wizard in the individual sections.

5Add system components in Solar.web and start up the PV system.

The network wizard and the product setup can be carried out independently of each other. A network connection is required for the Solar.web installation wizard.

WLAN:

1Open the access point by touching the sensor once    → Communication LED: flashes blue.

2Establish the connection to the inverter in the network settings (the inverter is displayed with the name "FRONIUS_PILOT" and the serial number of the device).

3Password: enter 12345678 and confirm.
IMPORTANT!
To enter the password on a Windows 10 operating system, the link "Connect using a security key instead" must first be activated to establish a connection with the password: 12345678.

4In the browser address bar, enter and confirm the IP address 192.168.250.181. The installation wizard is opened.

5Follow the installation wizard in the individual sections and complete the installation.

6Add system components in Solar.web and start up the PV system.

The network wizard and the product setup can be carried out independently of each other. A network connection is required for the Solar.web installation wizard.

Ethernet:

1Establish a connection to the inverter (LAN1) with a network cable (CAT5 STP or higher).

2Open the access point by touching the sensor once    → Communication LED: flashes blue.

3In the browser address bar, enter and confirm IP address 169.254.0.180. The installation wizard is opened.

4Follow the installation wizard in the individual sections and complete the installation.

5Add system components in Solar.web and start up the PV system.

The network wizard and the product setup can be carried out independently of each other. A network connection is required for the Solar.web installation wizard.

IMPORTANT!
Depending on the user's authorization, settings can be executed in the individual menus.

IMPORTANT!
Depending on the user's authorization, settings can be executed in the individual menus.

IMPORTANT!
Depending on the user's authorization, settings can be executed in the individual menus.

Select "Add component+" to add all available components to the system.

PV generator
Activate the MPP tracker and enter the connected PV power in the associated field. For combined solar module strings, "PV 1 + PV 2 connected in parallel" must be activated.

Battery
If the SoC mode is set to "Automatic", the values "Minimum SoC" and "Maximum SoC" are preset according to the technical specifications of the battery manufacturer.

If the SoC mode is set to "Manual", the values "Minimum SoC" and "Maximum SoC" may be changed after consultation with the battery manufacturer within the scope of their technical specifications. In the event of a power outage, the set values are not taken into account.

Using the "Allow battery charging from additional producers in home network" setting, charging of the battery from other external producers is enabled/disabled.

Using the "Allow battery charging from public grid" setting, charging of the battery from the public grid is enabled/disabled.
The normative or feed-in tariff rules must be taken into account with this setting. The setting does not affect the charging of the battery by other producers within the home. It merely relates to the process of drawing charging energy from the public grid. Regardless of this setting, any charging from the public grid that is required for service reasons (e.g. necessary re-charging to protect against deep discharge) is still performed.

IMPORTANT!
Fronius accepts no liability for damage to third-party batteries.

Primary meter
To ensure smooth operation in conjunction with other energy producers and in Full Backup backup power mode, it is important to install the Fronius Smart Meter at the feed-in point. The inverter and other producers must be connected to the public grid via the Fronius Smart Meter.
This setting also affects the behaviour of the inverter at night. If the function is deactivated, the inverter switches to Standby mode as soon as there is no more PV power available, provided that no energy management command is sent to the battery (e.g. minimum state of charge reached). The message "Power low" is displayed. The inverter restarts as soon as an energy management command is sent or sufficient PV power is available.
If the function is activated, the inverter remains permanently connected to the grid so that energy can be drawn from other producers at any time.
After connecting the meter, the position must be configured. A different Modbus address needs to be set for each Smart Meter.
The Watt value on the generator meter is the sum of all generator meters. The Watt value on the consumption meter is the value of all secondary meters.

Ohmpilot
All Ohmpilots available in the system are displayed. Select the desired Ohmpilot and add it to the system via "Add".

Select "Add component+" to add all available components to the system.

PV generator
Activate the MPP tracker and enter the connected PV power in the associated field. For combined solar module strings, "PV 1 + PV 2 connected in parallel" must be activated.

Battery
If the SoC mode is set to "Automatic", the values "Minimum SoC" and "Maximum SoC" are preset according to the technical specifications of the battery manufacturer.

If the SoC mode is set to "Manual", the values "Minimum SoC" and "Maximum SoC" may be changed after consultation with the battery manufacturer within the scope of their technical specifications. In the event of a power outage, the set values are not taken into account.

Using the "Allow battery charging from additional producers in home network" setting, charging of the battery from other external producers is enabled/disabled.

Using the "Allow battery charging from public grid" setting, charging of the battery from the public grid is enabled/disabled.
The normative or feed-in tariff rules must be taken into account with this setting. The setting does not affect the charging of the battery by other producers within the home. It merely relates to the process of drawing charging energy from the public grid. Regardless of this setting, any charging from the public grid that is required for service reasons (e.g. necessary re-charging to protect against deep discharge) is still performed.

IMPORTANT!
Fronius accepts no liability for damage to third-party batteries.

Primary meter
To ensure smooth operation in conjunction with other energy producers and in Full Backup backup power mode, it is important to install the Fronius Smart Meter at the feed-in point. The inverter and other producers must be connected to the public grid via the Fronius Smart Meter.
This setting also affects the behaviour of the inverter at night. If the function is deactivated, the inverter switches to Standby mode as soon as there is no more PV power available, provided that no energy management command is sent to the battery (e.g. minimum state of charge reached). The message "Power low" is displayed. The inverter restarts as soon as an energy management command is sent or sufficient PV power is available.
If the function is activated, the inverter remains permanently connected to the grid so that energy can be drawn from other producers at any time.
After connecting the meter, the position must be configured. A different Modbus address needs to be set for each Smart Meter.
The Watt value on the generator meter is the sum of all generator meters. The Watt value on the consumption meter is the value of all secondary meters.

Ohmpilot
All Ohmpilots available in the system are displayed. Select the desired Ohmpilot and add it to the system via "Add".

Backup power
"Off", "PV Point" or "Full Backup" can be selected for backup power mode.
Full Backup can only be activated once the required I/O assignments have been configured for backup power. In addition, a meter must be mounted and configured at the feed-in point for Full Backup backup power mode.

IMPORTANT!
When configuring "PV Point" backup power mode, the information in chapter Safety on page (→) must be observed.
When configuring "Full Backup" backup power mode, the information in chapter Safety on page (→) must be observed.

Backup power nominal voltage
When backup power mode is activated, the nominal voltage of the public grid must be selected.

State of charge warning limit
A warning is output when the residual capacity of the battery specified here is reached in backup power mode.

Reserve capacity
The set value results in a residual capacity (depending on the capacity of the battery) that is reserved for backup power. The battery is not discharged below the residual capacity in grid-connected operation. In backup power mode, the manually set value "Minimum SoC" is not taken into account. If there is a power outage, the battery is always discharged down to the automatically preset minimum SoC in accordance with the technical specifications of the battery manufacturer.

Load management
Up to four pins can be selected for load management here. Additional load management settings are available in the "Load management" menu item.
Default: Pin 1

Australia - Demand Response Mode (DRM)
The pins for control via DRM can be set here:

IMPORTANT!
If the Demand Response Mode (DRM) function is enabled and no DRM control is connected, the inverter switches to Standby mode.

Here you can enter a value for the apparent power input and the apparent power output for the Australia country setup.

"Enforce Standby"
When the function is activated, the feed-in mode of the inverter is interrupted. This enables a powerless shutdown of the inverter and protects its components. When the inverter is restarted, the standby function is automatically deactivated.

"PV 1" and "PV 2"

"Ripple Control"
Ripple control signals are signals sent out by the energy company to switch controllable loads on and off. Depending on the installation situation, ripple control signals may be attenuated or amplified by the inverter. The settings below can be used to counteract this if necessary.

"Measure against RCD false triggers"
(when using a 30 mA residual current circuit breaker)

"Iso Warning"

"Backup Power"

Self-consumption optimisation
The inverter always adjusts to the set target value on the Smart Meter. In the "automatic" operating mode (factory setting), an adjustment is made to 0 W at the feed-in point (maximum self-consumption).

• The Fronius Smart Meter must be installed at the feed-in point
• Battery charging must be activated by another producer

The self-consumption optimisation has lower priority than the battery control specifications.

Self-consumption optimization
Switch self-consumption optimization to automatic or manual.

Target value on Smart Meter
If a manual selection is made under self-consumption optimisation, the target value on the Smart Meter and the reference/feed-in can be selected here.

External producers (only possible with active battery and inverter with battery connection)
If further decentralised producers are installed in the house, and these are incorporated into the self-consumption regulation of the Fronius Hybrid inverter, this setting must be activated. This means that energy can be drawn from the household network and fed into the battery via the Fronius GEN24 inverter. You can restrict how much power is consumed by the Fronius GEN24 inverter by specifying the maximum AC power (AC max.). A maximum power consumption of the AC rated power of the Fronius GEN24 inverter is possible.

Self-consumption optimisation
The inverter always adjusts to the set target value on the Smart Meter. In the "automatic" operating mode (factory setting), an adjustment is made to 0 W at the feed-in point (maximum self-consumption).

• The Fronius Smart Meter must be installed at the feed-in point
• Battery charging must be activated by another producer

The self-consumption optimisation has lower priority than the battery control specifications.

Self-consumption optimization
Switch self-consumption optimization to automatic or manual.

Target value on Smart Meter
If a manual selection is made under self-consumption optimisation, the target value on the Smart Meter and the reference/feed-in can be selected here.

External producers (only possible with active battery and inverter with battery connection)
If further decentralised producers are installed in the house, and these are incorporated into the self-consumption regulation of the Fronius Hybrid inverter, this setting must be activated. This means that energy can be drawn from the household network and fed into the battery via the Fronius GEN24 inverter. You can restrict how much power is consumed by the Fronius GEN24 inverter by specifying the maximum AC power (AC max.). A maximum power consumption of the AC rated power of the Fronius GEN24 inverter is possible.

Priorities
If additional components (e.g. battery, Ohmpilot) are present in the system, the priorities can be set here. Devices having higher priority are actuated first, and subsequently, if there is still excess energy available, the other devices.

Load management
It is possible for up to four different load management rules to be defined. At the same threshold values, the rules are activated in succession. For deactivation, this is done in reverse; the I/O last switched on is the first to be switched off. In the case of different thresholds, the I/O with the lowest threshold is switched on first, followed by the second lowest, and so on.

I/Os controlled by the produced power are always prioritised over a battery and Ohmpilot. That is to say that an I/O can switch on and result in the battery no longer being charged or the Ohmpilot no longer being activated.

An I/O is activated or deactivated only after 60 seconds.

• Control is deactivated.
• Control is effected by the power generated.
• Control is effected by excess power (given feed limits). This option can only be selected if a meter has been connected. Control via Energy Manager is effected using the actual power of feeding in with respect to the grid.

• On: For entering an effective power limit, at which the output is activated.
• Off: For entering an effective power limit, at which the output is deactivated.

• Field for enabling a minimum duration for which the output is to be activated for each switch-on process.
• Field for enabling the maximum runtime per day.
• Field for enabling a target duration for which the output is to be activated in total per day (total of several switch-on processes).

All available updates are made available on the product page and in the "Download search" area under www.fronius.com .

The update will start.

The guided setup wizard can be accessed here.

All settings
All configuration data is reset with the exception of the country setup. Changes to the country setup may only be carried out by authorized personnel.

All settings with no network
All configuration data is reset with the exception of the country setup and the network settings. Changes to the country setup may only be carried out by authorized personnel.

Current events
All current events of the connected system components are shown here.

IMPORTANT!
Depending on the type of event, these must be confirmed via the "tick" button in order to be processed further.

Archived
All events of the connected system components that no longer exist are shown here.

This menu displays all system information and the current settings.

The PDF is created and displayed.

The licence file contains the performance data and the scope of functions of the inverter. When replacing the inverter, power stage set or data communication area, the licence file must also be replaced.

The licence activation starts.

The licence activation starts.

The support user is activated.

IMPORTANT!
The support user only allows Fronius Technical Support to implement settings on the inverter via a secure connection. The button "End support user access" deactivates the access.

The sdp.cry file is saved in the downloads.

Remote maintenance access for the Fronius Support team is enabled.

IMPORTANT!
Remote maintenance access gives Fronius Technical Support exclusive access to the inverter via a secure connection. Diagnostic data is transmitted here that can be used for troubleshooting purposes. Only enable remote maintenance access following a request from the Fronius Support team.

• Tcp fronius-se-iot.azure-devices.net:8883
• Tcp fronius-se-iot-telemetry.azure-devices.net:8883
• Tcp fronius-se-iot-telemetry.azure-devices.net:443
• Udp sera-gen24.fronius.com:1194 (213.33.117.120:1194)
• Tcp froniusseiot.blob.core.windows.net:443
• Tcp provisioning.solarweb.com:443
• Tcp cure-se.fronius.com:443

LAN:

The connection is established.

WLAN:

The connection is established automatically.

Select and connect WLAN network:
The networks found are shown in the list. Clicking on the refresh button    will carry out a second search of the available WLAN networks. The "Find network" input field can be used to further restrict the selection list.

1Select network from the list.

2Select connection type "automatic" or "static".

3For connection type "automatic" - enter WLAN password and host name.

4For connection type "static" - enter IP address, subnet mask, DNS and gateway.

5Click on the "Connect" button.

The connection is established.

Access point:

The inverter acts as the access point. A PC or smart device connects directly with the inverter. It is not possible to connect to the internet. The "Network name (SSID)" and "Network key (PSK)" can be assigned in this menu.
It is possible to operate a connection via WLAN and via access point simultaneously.

• Tcp fronius-se-iot.azure-devices.net:8883
• Tcp fronius-se-iot-telemetry.azure-devices.net:8883
• Tcp fronius-se-iot-telemetry.azure-devices.net:443
• Udp sera-gen24.fronius.com:1194 (213.33.117.120:1194)
• Tcp froniusseiot.blob.core.windows.net:443
• Tcp provisioning.solarweb.com:443
• Tcp cure-se.fronius.com:443

LAN:

The connection is established.

WLAN:

The connection is established automatically.

Select and connect WLAN network:
The networks found are shown in the list. Clicking on the refresh button    will carry out a second search of the available WLAN networks. The "Find network" input field can be used to further restrict the selection list.

1Select network from the list.

2Select connection type "automatic" or "static".

3For connection type "automatic" - enter WLAN password and host name.

4For connection type "static" - enter IP address, subnet mask, DNS and gateway.

5Click on the "Connect" button.

The connection is established.

Access point:

The inverter acts as the access point. A PC or smart device connects directly with the inverter. It is not possible to connect to the internet. The "Network name (SSID)" and "Network key (PSK)" can be assigned in this menu.
It is possible to operate a connection via WLAN and via access point simultaneously.

Modbus RTU interface 0 / 1
If one of the two Modbus RTU interfaces is set to Slave, the following input fields are available:

"Baud rate"
The baud rate influences the transmission speed between the individual components connected in the system. When selecting the baud rate, ensure that it is the same at both the sending and receiving end.

"Parity"
The parity bit can be used to check the parity. It detects transmission errors. A parity bit can safeguard a specific number of bits. The value (0 or 1) of the parity bit must be calculated by the sender and is checked by the recipient using the same calculation. The parity bit can be calculated for even and odd parity.

"SunSpec Model Type"
Depending on the SunSpec model, there are two different settings.

float: SunSpec Inverter Model 111, 112, 113 or 211, 212, 213.
int + SF: SunSpec Inverter Model 101, 102, 103 or 201, 202, 203.

"Meter address"
The value entered is the identification number (Unit ID) assigned to the meter. Can be found on the user interface of the inverter in the Communication - Modbus menu.
Factory setting: 200

"Inverter address"
The value entered is the identification number
(Unit ID) assigned to the inverter. Can be found on the user interface of the inverter in the Communication - Modbus menu.
Factory setting: 1

Slave as Modbus TCP
If the function "Slave as Modbus TCP" is activated, the following input fields are available:

"Modbus port"
Number of the TCP port that is to be used for Modbus communication.

"SunSpec Model Type"
Depending on the SunSpec model, there are two different settings.

float: SunSpec Inverter Model 111, 112, 113 or 211, 212, 213.
int + SF: SunSpec Inverter Model 101, 102, 103 or 201, 202, 203.

"Meter address"
The value entered is the identification number (Unit ID) assigned to the meter.
Can be found on the user interface of the inverter in the Communication - Modbus menu.
Factory setting: 200

"Inverter address"
The value entered is the identification number (Unit ID) assigned to the inverter. Can be found on the user interface of the inverter in the Communication - Modbus menu.
Factory setting: This value is invariably defined as 1.

• On/Off
• Power reduction
• Specification of a constant power factor (cos phi)
• Specification of a constant reactive power value
• Battery control specifications with battery

The Fronius Solar API is an Ethernet-based, open JSON interface. When enabled, IOT devices on the local network can access inverter information without authentication. For security reasons, the interface is deactivated at the factory and should not be activated if it is not required for a third-party application (e.g. EV charger, smart home solutions, etc.).

For monitoring, Fronius recommends using Fronius Solar.web instead, which provides secure access to inverter status and production information.

When performing a firmware update to version 1.14.x, the setting (activated/deactivated) of the Fronius Solar API is adopted.

The "Country setup" menu area is intended exclusively for installers/service technicians from authorised specialist companies. The access code must be requested from the national/international Fronius point of contact using an application form.

The selected country setup for the respective country contains preset parameters according to the nationally applicable standards and requirements. Depending on local grid conditions and the specifications of the energy provider, adjustments to the selected country setup may be necessary.

The "Country setup" menu area is intended exclusively for installers/service technicians from authorised specialist companies. The access code must be requested from the national/international Fronius point of contact using an application form.

The selected country setup for the respective country contains preset parameters according to the nationally applicable standards and requirements. Depending on local grid conditions and the specifications of the energy provider, adjustments to the selected country setup may be necessary.

Energy companies or grid operators may stipulate feed-in limitations for an inverter (e.g. max. 70% of kWp or max. 5 kW).
The feed-in limitation takes account of self-consumption by the household before the power of an inverter is reduced:

• A custom limit can be set.
• A Fronius Smart Meter can be connected to the Modbus push-in terminal of the data communication area at the connections M0/M1- / M0/M1+ for Modbus data.

With the inverter, any PV power that is not allowed to be fed into the public grid is used to charge the battery instead and/or used by the Fronius Ohmpilot so that it does not go to waste. The feed-in limitation is only active if the power of feeding in is higher than the set power reduction.

"Off"
The inverter converts the entire available PV power and feeds it into the public grid.

"Limit for entire system"
The entire PV system is limited in accordance with a set power limit. The value of the permissible total feed-in power must be set.

"Limit per phase"
Each individual phase is measured. If the permissible feed-in limit is exceeded on one phase, the total power of the inverter is reduced until the value on the affected phase is permissible again (see example below). This setting is only necessary if required by national standards and regulations. The value of the permissible power of feeding in per phase must be set.

"Total DC system power"
Input field for the total DC system power in Wp.
This value is used if the "Maximum permitted feed-in power of the entire system" is specified in %.

"Maximum permitted feed-in power of the entire system"
Input field for the "Maximum permitted feed-in power of the entire system" in W or % (setting range: -10 to 100%).
If there is no meter in the system or if a meter has failed, the inverter limits the power of feeding in to the set value.

"Hard Limit"
If this value is exceeded, the inverter switches off within max. 5 seconds. This value must be higher than the value set for "Soft Limit".

"Soft Limit"
If this value is exceeded, the inverter will regulate down to the set value within the time required by national standards and regulations.

Example 1: Fronius SnapINverter ≤ Fronius Symo GEN24
Only one primary meter is required for the Fronius Symo GEN24 inverter.

The power values shown are an example. Inverter configurations with power values other than those shown in the example are possible, taking into account the criteria for this example.

IMPORTANT!
Zero feed-in is not possible when using 2 inverters.

Settings on the Fronius Symo GEN24 inverter website:

1Configure the primary meter at the feed-in point in the “Device configuration" → “Components” menu.

2Activate the limit for the entire system in the "Safety and grid regulations" → "Export limitation" menu. Enter the DC nominal output of the entire PV system in the "Total DC system power" input field. Enter the percentage value (50%, 60% or 70%) in the "Maximum permitted feed-in power of the entire system" input field.

Example 2a: Fronius SnapINverter > Fronius Symo GEN24
Two primary meters are required for the inverters.

The power values shown are an example. Inverter configurations with power values other than those shown in the example are possible, taking into account the criteria for this example.

IMPORTANT!
With two primary meters at the feed-in point without a secondary meter, Fronius SnapINverter and Fronius Symo GEN24 inverters cannot be displayed as a combined PV system in Solar.web. Two individual PV systems must be created in Solar.web.

Settings on the Fronius Symo GEN24 inverter website:

1Configure the primary meter at the feed-in point in the “Device configuration" → “Components” menu.

Settings in the system monitoring of the Fronius SnapInverter:

1Configure the primary meter at the feed-in point in the "Settings " → "Meter" menu.

2Activate the limit for the entire system in the "DNO Editor" → "Dynamic power reduction" menu. Enter the DC nominal output of the entire PV system in the "Total DC system power" input field. Enter the percentage value (50%, 60% or 70%) in the "Max. grid feed-in power" input field.

Example 2b: Fronius SnapINverter > Fronius Symo GEN24
Two primary meters and one secondary meter are required for the inverters.

The power values shown are an example. Inverter configurations with power values other than those shown in the example are possible, taking into account the criteria for this example.

IMPORTANT!
In order to be able to record all PV system data in Solar.web in full, only the Fronius Symo GEN24 inverter may be created in this PV system. The Fronius SnapINverter data is transmitted from the secondary meter to the Fronius Symo GEN24 inverter and thus displayed in the Solar.web.
We recommend that you set up the Fronius SnapINverter as a separate additional PV system in Solar.web for servicing and maintenance work (e.g. status codes, online updates, etc.).

Settings on the Fronius Symo GEN24 inverter website:

1Configure the primary meter at the feed-in point in the “Device configuration" → “Components” menu.

2Configure the secondary meter in the "Device configuration" → "Components" menu.

Settings in the system monitoring of the Fronius SnapInverter:

1Configure the primary meter at the feed-in point in the "Settings " → "Meter" menu.

2Activate the limit for the entire system in the "DNO Editor" → "Dynamic power reduction" menu. Enter the DC nominal output of the entire PV system in the "Total DC system power" input field. Enter the percentage value (50%, 60% or 70%) in the "Max. grid feed-in power" input field.

General
In this menu item, settings relevant for an electricity company (DNO) are made. An effective power limitation in % and/or a power factor limitation can be set.

IMPORTANT!
The service password must be entered in order to adjust settings in this menu item. Settings in this menu area must only be made by trained and qualified personnel.

"Input pattern" (assignment of individual I/Os)
1 click = white (contact open)
2 clicks = blue (contact closed)
3 x clicks = grey (not used)

"Power factor (cos φ)"
"ind" = inductive
"cap" = capacitive

"DNO feedback"
when the rule is enabled, output “DNO feedback” (pin 1 recommended) must be configured (e.g. for operating a signalling device).

For "Import" or "Export", the data format *.fpc is supported.

Control priorities
For setting the control priorities for the ripple control signal receiver, the feed-in limitation and control via Modbus.

1 = highest priority, 3 = lowest priority

The ripple control signal receiver and the I/Os terminal of the inverter can be connected to one another in accordance with the connection diagram.
If the distance between the inverter and the ripple control signal receiver exceeds 10 m, at least a CAT 5 cable is recommended and the shield must be connected at one end to the push-in terminal of the data communication area (SHIELD).

The settings for 4-relay mode are stored.

The ripple control signal receiver and the I/Os terminal of the inverter can be connected to one another in accordance with the connection diagram.
If the distance between the inverter and the ripple control signal receiver exceeds 10 m, at least a CAT 5 cable is recommended and the shield must be connected at one end to the push-in terminal of the data communication area (SHIELD).

The settings for 3-relay mode are stored.

The ripple control signal receiver and the I/Os terminal of the inverter can be connected to one another in accordance with the connection diagram.
If the distance between the inverter and the ripple control signal receiver exceeds 10 m, at least a CAT 5 cable is recommended and the shield must be connected at one end to the push-in terminal of the data communication area (SHIELD).

The settings for 2-relay mode are stored.

The ripple control signal receiver and the I/Os terminal of the inverter can be connected to one another in accordance with the connection diagram.
If the distance between the inverter and the ripple control signal receiver exceeds 10 m, at least a CAT 5 cable is recommended and the shield must be connected at one end to the push-in terminal of the data communication area (SHIELD).

The settings for 1-relay mode are stored.

Description
The 'Autotest' can be used to check the protective function required by the Italian standard for monitoring the voltage and frequency limits as well as the trip limits of the inverter during commissioning. During normal operation, the inverter constantly checks the current voltage and frequency actual value of the grid.
After the start of the autotest, various individual tests run automatically one after the other. Depending on grid conditions, the duration of the test is approx. 15 minutes.

IMPORTANT!
The inverter may only be commissioned in Italy after a successful autotest (CEI 0-21). If the autotest is not passed, no feed-in operation may take place. If the autotest is started once, it must be completed successfully. The autotest cannot be started during emergency power mode.

The PDF is created and displayed.

Note on autotest
The limit values are set in the menu area 'Grid Code'.
The access code for the 'Grid Code' menu area corresponds to the installer code (PROFI menu) and is only made available to Fronius following a written request. An appropriate application form is available from national technical support.

A surge protective device (SPD) protects against temporary overvoltages and dissipates surge currents (e.g. lightning strike). Building on an overall lightning protection concept, the SPD helps to protect your PV system components.
For detailed information on the wiring diagram of the surge protective device, see chapter Wiring diagram - surge protective device SPD on page (→).

If the surge protective device is triggered, the colour of the indicator changes from green to red (mechanical display) and the operation LED of the inverter lights up red (see chapter Button functions and LED status indicator on page (→)). The error code "1030 WSD Open " is displayed on the inverter's website in the System " → " Event Log " menu or in the user menu under "Notifications as well as in Fronius Solar.web. In this case, the inverter must be repaired by an authorised specialist.

IMPORTANT!
The inverter also switches off if the 2-pin signal cable of the surge protective device is interrupted or damaged.

A surge protective device (SPD) protects against temporary overvoltages and dissipates surge currents (e.g. lightning strike). Building on an overall lightning protection concept, the SPD helps to protect your PV system components.
For detailed information on the wiring diagram of the surge protective device, see chapter Wiring diagram - surge protective device SPD on page (→).

If the surge protective device is triggered, the colour of the indicator changes from green to red (mechanical display) and the operation LED of the inverter lights up red (see chapter Button functions and LED status indicator on page (→)). The error code "1030 WSD Open " is displayed on the inverter's website in the System " → " Event Log " menu or in the user menu under "Notifications as well as in Fronius Solar.web. In this case, the inverter must be repaired by an authorised specialist.

IMPORTANT!
The inverter also switches off if the 2-pin signal cable of the surge protective device is interrupted or damaged.

A surge protective device (SPD) protects against temporary overvoltages and dissipates surge currents (e.g. lightning strike). Building on an overall lightning protection concept, the SPD helps to protect your PV system components.
For detailed information on the wiring diagram of the surge protective device, see chapter Wiring diagram - surge protective device SPD on page (→).

If the surge protective device is triggered, the colour of the indicator changes from green to red (mechanical display) and the operation LED of the inverter lights up red (see chapter Button functions and LED status indicator on page (→)). The error code "1030 WSD Open " is displayed on the inverter's website in the System " → " Event Log " menu or in the user menu under "Notifications as well as in Fronius Solar.web. In this case, the inverter must be repaired by an authorised specialist.

IMPORTANT!
The inverter also switches off if the 2-pin signal cable of the surge protective device is interrupted or damaged.

The surge protective device (SPD) is an optional extra and can be retrofitted to the inverter.

For technical data, see chapter "Technical data" on page (→).

1. PC board
2. 4 TX20 screws
3. Ground conductor
4. 2-pin signal cable
5. PV cable
6. PV+ cable
7. User Information