Fronius Primo GEN24 7.7 - 10.0 kW 208 - 240 / 7.7 - 10.0 kW 208 - 240 Plus Operating instructions

Please pay special attention when one of the symbols from the "Safety rules" chapter appears in these instructions.

1. Safety rules

Please pay special attention when one of the symbols from the "Safety rules" chapter appears in these instructions.

1. Safety rules

IMPORTANT!
This unit must be operated in accordance with the technical specifications datasheet. This document is available on the corporate website of the manufacturer.

1. Safety rules

• Serious or fatal injury to the operator or third parties
• Damage to the device and other material assets belonging to the property owner

• Be suitably qualified to perform electrical work, as defined by the NFPA 70
• Have knowledge of and experience in dealing with electrical installations
• Have fully read and precisely followed these Operating Instructions

All installations must comply with national and local electrical codes and standards.

In addition to the Operating Instructions, all applicable local 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

• Serious or fatal injury to the operator or third parties
• Damage to the device and other material assets belonging to the property owner

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.

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

1. Safety rules

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

1. Safety rules

The servicing information contained in these Operating Instructions is intended only for the use of qualified personnel as defined by the NFPA 70. An electric shock can be fatal. Do not carry out any actions other than those described in the documentation.

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

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

It is impossible to guarantee that externally (aka, third-party) procured 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.

1. Safety rules

The sound pressure level of the inverter is indicated in the Technical data.

The cooling of the device takes place via an electronic temperature control system at the lowest possible noise level and depends on the power used, ambient temperature, and the soiling level of the device, etc.

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

1. Safety rules

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

1. Safety rules

This system has backup power functions, which enable a replacement power supply to be established in the event of a failure of 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.

The function of the residual current devices for the backup power supply must be checked at regular intervals (according to the manufacturer's instructions), but at least twice a year.
A description on how to perform the test operation can be found in the backup power checklist (https://www.fronius.com/en/search-page, item number: 42,0426,0365).

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 starting currents that are too high therefore cannot be started/operated, even though the nominal output of the inverter suggests that they can. When dimensioning 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.

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.

1. Safety rules

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

1. Safety rules

Copyright of these operating instructions remains with the manufacturer.

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

1. Safety rules

Grounding a point in the device, system, or installation serves as a protective measure against electric shock in the event of a fault. When installing an inverter from safety class 1 (see Technical data), a ground conductor connection is required.

When connecting the ground conductor, ensure that it is secured to prevent unintentional disconnection. All of the points listed in the chapter headed Connecting the inverter to the public grid (AC side) on page (→) must be observed. When using strain-relief devices, it is important to ensure that the ground conductor is loaded last in the event of a failure. The respective national standards and regulations and requirements for minimum cross-section must be observed when connecting the ground conductor.

1. General information

Function	Primo GEN24	Primo GEN24 Plus
Backup power variant - PV Point (OP)
Battery connection*	Available as an option**
Backup power variant - Essential Backup	Available as an option**

1. General information
2. Fronius Primo GEN24 208 - 240

Function	Primo GEN24	Primo GEN24 Plus
Backup power variant - PV Point (OP)
Battery connection*	Available as an option**
Backup power variant - Essential Backup	Available as an option**

1. General information
2. Fronius Primo GEN24 208 - 240

(1)	Housing cover
(2)	Inverter
(3)	Mounting bracket (illustration)
(4)	Quick Start Guide

1. General information
2. Fronius Primo GEN24 208 - 240

With Fronius UP*, optionally available functions can be added to the inverter by the authorized specialist company (see chapter Function overview).

1. General information
2. Fronius Primo GEN24 208 - 240

The inverter is designed to convert direct current from PV modules into alternating current and feed this power into the public grid. A backup power mode* is possible if the wiring is set up accordingly.

• Carefully reading and following all the instructions as well as complying with the safety and danger notices in the operating instructions
• Installation in accordance with the chapter headed Installation, from page (→)

Follow all grid operator regulations regarding energy fed into the grid and connection methods.

• The inverter may be operated for max. 2000 operating hours in backup power mode
• The inverter may be operated for more than 2000 operating hours in backup power mode provided 20% of the grid power feed operating time of the inverter is not exceeded at the time in question

1. General information
2. Fronius Primo GEN24 208 - 240

Ambient air is drawn in at the front of the device by the fan and blown out at the sides. The even heat dissipation allows several inverters to be installed next to each other.

1. General information
2. Fronius Primo GEN24 208 - 240

System owners and installers can easily monitor and analyze the PV system using Fronius Solar.web or Fronius Solar.web Premium. With the appropriate configuration, the inverter transmits data such as power, yield, load, and energy balance to Fronius Solar.web. More detailed information can be found at Solar.web - Monitoring & analysis.

Configuration is carried out using the Setup wizard; see the chapter headed Installation with the app on page (→) or Installation with the browser on page (→).

• Internet connection (download: min. 512 kbit/s, upload: min. 256 kbit/s)*.
• User account at solarweb.com.
• Completed configuration using the Setup wizard.

1. General information
2. Fronius Primo GEN24 208 - 240

The inverter can be found via the Multicast DNS (mDNS) protocol. We recommend searching for the inverter using the assigned host name.

• NominalPower
• Systemname
• DeviceSerialNumber
• SoftwareBundleVersion

1. General information

		PV module generates direct current.
		Fronius GEN24 inverter converts direct current into alternating current and charges the battery (battery support is required to charge the battery, see Function overview on page(→)). The integrated system monitoring enables the inverter to be integrated into a network by means of WLAN.
		Additional inverter in the system converts the direct current into alternating current. However, it cannot charge a battery and is not available in backup power mode.
		Battery is coupled to the inverter on the direct current side and stores electrical energy.
		Primary meter records the system's load curve and provides measurement data for energy profiling in Fronius Solar.web. The primary meter also controls the dynamic feed-in control.
		Secondary meter records the load curve of individual loads (e.g., washing machine, lamps, TV, heat pump, etc.) in the consumption branch and provides measurement data for energy profiling in Fronius Solar.web.
		Loads in the system are the loads connected in the system.
		Additional loads and producers in the system are connected to the system by means of a Smart Meter.
		PV Point is a non-uninterruptible 1‑phase backup power circuit that supplies electrical devices with up to 1.56 kW if sufficient power is available from the PV modules or the battery.
		Essential Backup the inverter is prepared for backup power mode. The backup power mode must be implemented in the switch cabinet by the electrician performing the installation. The PV system operates in a stand-alone manner in backup power mode.
		Grid supplies the loads in the system if insufficient power is being generated by the PV modules or supplied by the battery.

1. General information
2. Different operating modes

		PV module generates direct current.
		Fronius GEN24 inverter converts direct current into alternating current and charges the battery (battery support is required to charge the battery, see Function overview on page(→)). The integrated system monitoring enables the inverter to be integrated into a network by means of WLAN.
		Additional inverter in the system converts the direct current into alternating current. However, it cannot charge a battery and is not available in backup power mode.
		Battery is coupled to the inverter on the direct current side and stores electrical energy.
		Primary meter records the system's load curve and provides measurement data for energy profiling in Fronius Solar.web. The primary meter also controls the dynamic feed-in control.
		Secondary meter records the load curve of individual loads (e.g., washing machine, lamps, TV, heat pump, etc.) in the consumption branch and provides measurement data for energy profiling in Fronius Solar.web.
		Loads in the system are the loads connected in the system.
		Additional loads and producers in the system are connected to the system by means of a Smart Meter.
		PV Point is a non-uninterruptible 1‑phase backup power circuit that supplies electrical devices with up to 1.56 kW if sufficient power is available from the PV modules or the battery.
		Essential Backup the inverter is prepared for backup power mode. The backup power mode must be implemented in the switch cabinet by the electrician performing the installation. The PV system operates in a stand-alone manner in backup power mode.
		Grid supplies the loads in the system if insufficient power is being generated by the PV modules or supplied by the battery.

1. General information
2. Different operating modes

1. General information
2. Different operating modes

1. General information
2. Different operating modes

1. General information
2. Different operating modes

IMPORTANT!
For backup power mode, a Backup Frequency Offset can be set for loads in the backup power circuit (see Inverter).

• 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

1. General information
2. Different operating modes

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.

1. General information
2. Different operating modes

(1)	PV module – inverter – load/grid/battery
(2)	Battery – inverter – load/grid*
(3)	Grid – inverter – battery*

* Depending on the settings and local standards and regulations.

1. General information
2. Different operating modes

Battery systems distinguish between different operating states. In each case, the relevant current operating state is displayed on the user interface of the inverter or in Fronius Solar.web.

1. General information

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.

1. General information
2. Energy-saving mode

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.

1. General information
2. Energy-saving mode

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.

1. General information
2. Energy-saving mode

• 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 user interface of the inverter.
• The battery is being recharged in order to restore the minimum state of charge or perform calibration.

1. General information
2. Energy-saving mode

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.

1. General information
2. Energy-saving mode

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

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

1. General information

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.

Install third-party batteries (part of a ESS (energy storage system)) according to applicable local and national codes.

Read this document and the Installation Instructions before installing and commissioning the external battery. The documentation is either enclosed with the external battery or can be obtained from the battery manufacturer or their service partners

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

1. General information
2. Suitable batteries

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.

Install third-party batteries (part of a ESS (energy storage system)) according to applicable local and national codes.

Read this document and the Installation Instructions before installing and commissioning the external battery. The documentation is either enclosed with the external battery or can be obtained from the battery manufacturer or their service partners

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

1. General information
2. Suitable batteries

If the DC voltage exceeds 403 V, the battery can no longer be charged or discharged. The voltage of 403 V is rarely exceeded during normal operation of the inverter.

• Overdimensioning of the module array.
• Feed-in limitation (e.g., zero feed-in).
• Specifications of the grid operator (e.g., mains voltage-dependent power reduction).
• Backup power mode. If the 403 V voltage is exceeded during backup power, backup power operation may be restricted. Therefore, an open-circuit voltage of max. 403 V is recommended.

1. General information
2. Suitable batteries

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

IMPORTANT!
According to the manufacturer's specifications, the max. DC cable length is 20 m. More detailed information can be found in the manufacturer's documents.

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.

1. General information

• Via external buttons: One or more external buttons can be installed on the WSD (wired shutdown) interface of the Data communication area on page (→). Pressing one of these buttons interrupts the communication from the inverter to the rapid shutdown devices attached to the PV modules, only if they correspond to the SunSpec standard for rapid shutdown. The terminals are discharged to < 30 VDC  and < 15 VAC  within 30 seconds after RSD initiation.
  
• Via the loss of the grid connection: An automatic rapid shutdown can also occur if the grid connection is lost. The inverter identifies a failure of the grid connection and terminals are discharged to < 30 VDC  and < 15 VAC. The inverter also interrupts the communication to the shutdown devices of the PV modules if they correspond to the SunSpec standard for rapid shutdown.

Self test error automatic: RsdSelftestFailed
When an RSD occurs, an entry appears in the Event Log menu: RsdTriggeredByLossOfAc (interruption by AC breaker) or RsdTriggeredBySwitch (interruption by WSD circuit)

In case a module-level shutdown equipment within the PV array is used in combination with the inverter, this labeling has to be used acording to NEC (Section 690.12), CSA C22.1 (Section 64-218):

In case a string-level shutdown equipment at the PV array is used in combination with the inverter, this labeling has to be used acording to NEC (Section 690.12), CSA C22.1 (Section 64-218):

Warning - The installer is responsible for the correct labeling of the PV system. The rapid shutdown requirement of the inverter is not affected by the FRT (fault ride through) capability, so the inverter is „Grid support interactive compatible“.

Warning - This photovoltaic rapid shutdown equipment (PVRSE) does not perform all of the functions of a complete photovoltaic rapid shutdown system (PVRSS). This PVRSE must be installed with other equipment to from a complete PVRSS that meets the requirements of NEC (NFPA 70) section 690.12 for controlled conductors outside the array. Other equipment installed in or on this PV system may adversly affect the operation of the PVRSS. It is the responsibility of the installer to ensure that the completed PV system meets the rapid shutdown functional requirements. This equipment must be installed according to the manufacturer´s installation instructions.

Self-test
A self-test of the RSD function can be performed manually or automatically. The automatic self-test relates only to the discharge circuit of the RSD function. All other RSD circuit components are produced so as to be fail-safe.

Sequence of automatic self-test:
In each startup procedure—prior to connection to the public grid—when there is sufficient DC voltage (40 V) the discharge circuit is activated for 10 ms and the feedback pin is checked prior to and during charging.

Sequence of manual self-test:
A manual self-test can be triggered by an interruption in the grid connection (e.g., AC breaker) or by the WSD trigger device (see also WSD (wired shutdown) on page (→)).

The discharge must be measured and checked using a multimeter.

1. General information
2. Protection of people and equipment

• Via external buttons: One or more external buttons can be installed on the WSD (wired shutdown) interface of the Data communication area on page (→). Pressing one of these buttons interrupts the communication from the inverter to the rapid shutdown devices attached to the PV modules, only if they correspond to the SunSpec standard for rapid shutdown. The terminals are discharged to < 30 VDC  and < 15 VAC  within 30 seconds after RSD initiation.
  
• Via the loss of the grid connection: An automatic rapid shutdown can also occur if the grid connection is lost. The inverter identifies a failure of the grid connection and terminals are discharged to < 30 VDC  and < 15 VAC. The inverter also interrupts the communication to the shutdown devices of the PV modules if they correspond to the SunSpec standard for rapid shutdown.

Self test error automatic: RsdSelftestFailed
When an RSD occurs, an entry appears in the Event Log menu: RsdTriggeredByLossOfAc (interruption by AC breaker) or RsdTriggeredBySwitch (interruption by WSD circuit)

In case a module-level shutdown equipment within the PV array is used in combination with the inverter, this labeling has to be used acording to NEC (Section 690.12), CSA C22.1 (Section 64-218):

In case a string-level shutdown equipment at the PV array is used in combination with the inverter, this labeling has to be used acording to NEC (Section 690.12), CSA C22.1 (Section 64-218):

Warning - The installer is responsible for the correct labeling of the PV system. The rapid shutdown requirement of the inverter is not affected by the FRT (fault ride through) capability, so the inverter is „Grid support interactive compatible“.

Warning - This photovoltaic rapid shutdown equipment (PVRSE) does not perform all of the functions of a complete photovoltaic rapid shutdown system (PVRSS). This PVRSE must be installed with other equipment to from a complete PVRSS that meets the requirements of NEC (NFPA 70) section 690.12 for controlled conductors outside the array. Other equipment installed in or on this PV system may adversly affect the operation of the PVRSS. It is the responsibility of the installer to ensure that the completed PV system meets the rapid shutdown functional requirements. This equipment must be installed according to the manufacturer´s installation instructions.

Self-test
A self-test of the RSD function can be performed manually or automatically. The automatic self-test relates only to the discharge circuit of the RSD function. All other RSD circuit components are produced so as to be fail-safe.

Sequence of automatic self-test:
In each startup procedure—prior to connection to the public grid—when there is sufficient DC voltage (40 V) the discharge circuit is activated for 10 ms and the feedback pin is checked prior to and during charging.

Sequence of manual self-test:
A manual self-test can be triggered by an interruption in the grid connection (e.g., AC breaker) or by the WSD trigger device (see also WSD (wired shutdown) on page (→)).

The discharge must be measured and checked using a multimeter.

1. General information
2. Protection of people and equipment

The inverter is equipped with a Power Line Communication (PLC) transmitter on the DC side. Its function is to ensure rapid shutdown in accordance with National Electric Code NEC 2023 Art. 690.12 and Canadian Electrical Code CSA C22.1:24 Art. 64-218. The PLC is implemented according to the specification “Communication Signal for Rapid Shutdown – SunSpec Interoperability Specification” (depending on national grid setup). Please visit www.sunspec.org for details.

• Keep the distance between the DC+ and DC- conductors as small as possible
• Avoid cable loops caused by cables that are too long (coil effect)
• Use metal cable ducts where possible
• Do not place DC cables from different inverters in the same cable duct or cable tray

1. General information
2. Protection of people and equipment

Depending on the installation, an additional external AC and/or DC disconnect may be required if the inverter is installed in a location not easily accessible to utility or first responders. Contact your local authorities for additional information.

1. General information
2. Protection of people and equipment

The wired shutdown (WSD) interrupts the inverter's grid power feed if the trigger device (switch, e.g., Emergency Stop or fire alarm contact) has been activated.

If the installation location requires inverter shutdown when the building fire alarm system is activated, the Wired Shut Down connection on the inverter can be used and connected to the building fire alarm system.

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 (→).

If the installation location requires inverter shutdown when the building fire alarm system is activated, the Wired Shut Down connection on the inverter can be used and connected to the building fire alarm system.

1. General information
2. Protection of people and equipment

The inverter is equipped with an RCMU (RCMU = residual current monitoring unit) according to UL1741 CRD 3rd Edition (Non-Isolated EPS Interactive PV Inverters).
It monitors residual currents from the PV module up to the AC output and disconnects the inverter from the grid when an improper residual current is detected. If five faults are detected within a period of 24 hours, grid power feed operation can also be permanently interrupted until a manual reconnection has been performed.

1. General information
2. Protection of people and equipment

In the case of PV systems with ungrounded PV source circuits, the inverter checks the resistance between the positive or negative pole of the PV system and the ground potential before feeding energy into the grid. In the event of a short circuit between the DC+ or DC- cable and ground (e.g. due to inadequately insulated DC cables or damaged solar modules), the inverter is prevented from feeding energy into the grid.

1. General information
2. Protection of people and equipment

An AFCI (arc fault circuit interrupter) protects against arc faults in accordance with National Electric Code NEC 2023 Art. 690.11 and Canadian Electrical Code CSA C22.1:24 Art. 64-216 and, in the narrower sense, is a protection device in the event of contact errors. The AFCI evaluates faults that occur in the current and voltage flow on the DC side using an electronic circuit and shuts down the circuit if a contact error is detected. This significantly reduces potential overheating and fire risk at poor contact points.

IMPORTANT!
Fronius will not bear any costs for production downtimes, installation costs, etc., which may arise due to a detected electric arc and its consequences. Fronius accepts no liability for damage which may occur despite the integrated Arc Fault Circuit Interrupter/interruption (e.g., due to a parallel arc).

IMPORTANT!
Active PV module electronics (e.g., power optimizers) can impair the function of the Arc Fault Circuit Interrupter. Fronius cannot guarantee the correct function of the Arc Fault Circuit Interrupter in combination with active PV module electronics.

Reconnection behavior
Grid power feed operation is interrupted for at least 5 minutes after an arc has been detected. Depending on the configuration, grid power feed operation is then automatically resumed. If several arcs are detected within a period of 24 hours, grid power feed operation can also be permanently interrupted until a manual reconnection has been performed.

1. General information
2. Protection of people and equipment

If one of the following safety devices is triggered, the inverter switches to the standby state:

• Rapid shutdown
• WSD
• RCMU
• Insulation monitoring
• AFCI

In the standby state, the inverter no longer feeds in and is disconnected from the grid by the opening of the AC relay.

1. General information
2. Protection of people and equipment

The inverter is equipped with an integrated surge protection device according to UL1741 3rd Edition, CSA-C22.2 No.107.1-16 on the DC (Category II) and AC (Category IV) side. The surge protection device protects the system against damage caused by overvoltage.

If the integrated surge protection devices become damaged due to prolonged overvoltage exposure, the damage may not be covered under the terms of warranty. See warranty terms for more information.

1. General information

 

1. General information
2. Operating controls and connections

 

1. General information
2. Operating controls and connections

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.

1. General information
2. Operating controls and connections

The ground electrode terminal    provides the option of grounding additional components, such as:

• AC cable
• Module mounting system
• Ground spike
• Battery

1. General information
2. Operating controls and connections

The DC disconnector has three switch settings:

(1)	Locked/off (turned to the left)
(2)	Off
(3)	On

IMPORTANT!
In switch settings (1) and (3), the inverter can be secured to prevent it from being switched on/off using a standard padlock. The national guidelines must be complied with in this respect.

1. General information
2. Operating controls and connections

1. General information
2. Operating controls and connections

	The status of the inverter is shown via the operating status LED. In the event of faults, carry out the individual steps in the Fronius Solar.start app.
	The optical sensor is actuated by touching with a finger.
	The status of the connection is shown via the communication LED. To establish the connection, carry out the individual steps in the Fronius Solar.start app.

Sensor functions
		1x    = WLAN Access Point (AP) is opened.    Flashing blue
		2x    = WLAN Protected Setup (WPS) is activated.    Flashing green
		3 seconds    (max. 6 seconds) = the service message is acknowledged.    Flashing white (rapidly)

LED status indicator
		The inverter is operating correctly.    Lights up green
		The inverter is performing the grid checks required by the applicable standards for feed-in mode.    Flashing green
		The inverter is in standby, is not operational (e.g. no feed-in at night) or is not configured.    Lights up yellow
		The inverter indicates a non-critical status.    Flashing yellow
		The inverter indicates a critical status and there is no grid power feed process.    Lights up red
		The inverter indicates a backup power overload.    Flashing red
		The network connection is being established via WPS. 2x    = WPS search mode.    Flashing green
		The network connection is being established via WLAN AP. 1x    = WLAN AP search mode (active for 30 minutes).    Flashing blue
		The network connection is not configured.    Lights up yellow
		The inverter is operating correctly, a network fault is indicated.    Lights up red
		The network connection is active.    Lights up blue
		The inverter is performing an update.    /    Flashing blue
		There is a service message.    Lights up white

1. General information
2. Operating controls and connections

The V+/GND pin provides the possibility of feeding in a voltage in the range of 12.5 to 24 V (+ max. 20%) using an external power supply unit. Outputs IO 0 - 5 can then be operated using the external voltage that has been fed in. A maximum of 1 A may be drawn per output, whereby a total of max. 3 A is permitted. The fuse protection must take place externally.

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

1. General information

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.

1. General information
2. Manual system start

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.

1. General information
2. Manual system start

Status codes about the inactive state of the battery are displayed on the user interface of the inverter. A notification via e-mail can be activated in Fronius Solar.web.

1. General information
2. Manual system start

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 batteries on page (→).

1. General information
2. Manual system start

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.

1. Backup power variant - PV Point (OP)

WARNING!

Limited rapid shutdown function in backup power mode (PV Point and Essential Backup)

If PV Point or Essential Backup is configured, rapid shutdown cannot be triggered via the loss of grid connection. This can result in serious personal injury and damage to the PV system.

A WSD switch must be installed for all backup power modes (PV-Point and Essentail Backup) (see Installing the WSD (wired shutdown)). The rapid shutdown is then triggered via WSD.

With the PV Point, in the event of a failure of the public grid, electrical devices can be connected to the Opportunity Power (OP) terminal and supplied with a maximum power of 1.56 kW, if enough power is available in the PV modules. 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 grid switchover with relay is not possible.

1. Backup power variant - PV Point (OP)
2. General

WARNING!

Limited rapid shutdown function in backup power mode (PV Point and Essential Backup)

If PV Point or Essential Backup is configured, rapid shutdown cannot be triggered via the loss of grid connection. This can result in serious personal injury and damage to the PV system.

A WSD switch must be installed for all backup power modes (PV-Point and Essentail Backup) (see Installing the WSD (wired shutdown)). The rapid shutdown is then triggered via WSD.

With the PV Point, in the event of a failure of the public grid, electrical devices can be connected to the Opportunity Power (OP) terminal and supplied with a maximum power of 1.56 kW, if enough power is available in the PV modules. 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 grid switchover with relay is not possible.

1. Backup power variant - PV Point (OP)
2. General

With the default settings, the inverter can provide 120V at the PV Point. A corresponding configuration must be set up during commissioning.

At the selected output voltage, a maximum of 13 A AC continuous current is available. The maximum continuous output is 1560 W.

Example:
120 V *13 A = 1560 W

In backup power mode, some electrical appliances cannot function properly as start-up currents are too high (e.g., fridges and freezers). In backup power mode, we recommend switching off non-essential loads. Overload capacity of 35% is possible for a duration of 5 seconds, depending on the current power of the PV module.

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

If no energy from the PV modules is available in backup power mode, backup power mode ends automatically. Backup power mode restarts again automatically once sufficient energy can once again be provided by the PV modules.

In the event of excessive loads, 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 specified in 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 - Essential 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
• IMPORTANT! The inverter provides a nominal output current of 240 V in backup power mode. The switch box must reduce the current to 120 V.
• 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.

1. Backup power variant - Essential Backup

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 - Essential 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
• IMPORTANT! The inverter provides a nominal output current of 240 V in backup power mode. The switch box must reduce the current to 120 V.
• 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.

1. Backup power variant - Essential Backup
2. General

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 - Essential 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
• IMPORTANT! The inverter provides a nominal output current of 240 V in backup power mode. The switch box must reduce the current to 120 V.
• 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.

1. Backup power variant - Essential Backup
2. General

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 undershot 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. Backup power variant - Essential Backup
2. General

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 restored public grid is determined by checking the measured values of the Fronius Smart Meter.
5. Backup power mode is terminated automatically or manually depending on the design of the backup power switchover facility.
6. All circuits are reconnected to the public grid and are supplied by the grid.
7. The inverter can start grid power feed operation again after performing the grid checks required by the relevant standard.

1. Backup power variant - Essential Backup
2. General

• 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 PV modules.
• The public grid is functioning again.
• The battery is switched off and on.

1. Installation

A quick-fastener system (3) is used to mount the connection area cover and front cover. The system is opened and closed with a half-rotation (180°) of the captive screw (1) into the quick-fastener spring (2).

The system is independent of torque.

1. Installation
2. General

A quick-fastener system (3) is used to mount the connection area cover and front cover. The system is opened and closed with a half-rotation (180°) of the captive screw (1) into the quick-fastener spring (2).

The system is independent of torque.

1. Installation
2. General

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

Symbols on the rating plate:
	Devices marked with the CSA certification mark satisfy the requirements of the relevant product standards for Canada and the USA.
	This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. Any changes or modification not expressly approved by the party responsible could void the user's authority to operate the device.

This device complies with Industry Canada licence-exempt RSS standard(s) and part 15 of the FCC Rules. Operation is subject to the following two conditions:

1. This device may not cause interference, and
2. This device must accept any interference, including interference that may cause undesired operation of the device.

Safety symbols:
	Danger 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, ensure that the input and output sides are de-energized.

1. Installation

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

		Only install on a solid, non-flammable surface.
		Max. ambient temperatures: -40 °F - +140 °F / -40 °C - 60 °C
		Relative humidity: 0 - 100%
		When installing the inverter in a switch cabinet or similar closed environment, it is necessary to make sure that the hot air that develops will be dissipated by forced-air ventilation. For more detailed information on inverter dimensions, refer to the chapter headed Fronius Primo GEN24 7.7 - 10.0 208-240 on page (→).
When installing the inverter on the outer walls of cattle sheds, it is important to maintain a minimum clearance of 6.5 ft between all sides of the inverter and the ventilation and building openings.
The following substrates are permissible for installation: Walls ( non-flammable surfaces sufficiently capable of bearing loads): Corrugated metal walls [mounting rails] Brick walls Concrete walls Vinyl siding walls Wood siding walls Stucco wall Poles (installed using mounting rails, behind the PV modules directly on the PV mounting system) Covered parking lot roofs (no overhead installation)

		The inverter is suitable for indoor installation.
		The inverter is suitable for outdoor installation. When properly installed, the inverter has a Type 4X protection class, is not susceptible to spraying water on any side and can also be operated in moist environments.
		In order to keep inverter heating as low as possible, do not expose the inverter to direct sunlight. The inverter should be installed in a protected location, e.g., near the PV modules or under an overhanging roof.
		IMPORTANT! The inverter must not be installed or operated at more than 13,123 ft / 4001 m above sea level.
		Do not install the inverter: Where it may be exposed to ammonia, corrosive gases, acids or salts (e.g., fertilizer 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 (Type 4X). 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 the chapter headed 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

1. Installation
2. Installation location and position

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

		Only install on a solid, non-flammable surface.
		Max. ambient temperatures: -40 °F - +140 °F / -40 °C - 60 °C
		Relative humidity: 0 - 100%
		When installing the inverter in a switch cabinet or similar closed environment, it is necessary to make sure that the hot air that develops will be dissipated by forced-air ventilation. For more detailed information on inverter dimensions, refer to the chapter headed Fronius Primo GEN24 7.7 - 10.0 208-240 on page (→).
When installing the inverter on the outer walls of cattle sheds, it is important to maintain a minimum clearance of 6.5 ft between all sides of the inverter and the ventilation and building openings.
The following substrates are permissible for installation: Walls ( non-flammable surfaces sufficiently capable of bearing loads): Corrugated metal walls [mounting rails] Brick walls Concrete walls Vinyl siding walls Wood siding walls Stucco wall Poles (installed using mounting rails, behind the PV modules directly on the PV mounting system) Covered parking lot roofs (no overhead installation)

		The inverter is suitable for indoor installation.
		The inverter is suitable for outdoor installation. When properly installed, the inverter has a Type 4X protection class, is not susceptible to spraying water on any side and can also be operated in moist environments.
		In order to keep inverter heating as low as possible, do not expose the inverter to direct sunlight. The inverter should be installed in a protected location, e.g., near the PV modules or under an overhanging roof.
		IMPORTANT! The inverter must not be installed or operated at more than 13,123 ft / 4001 m above sea level.
		Do not install the inverter: Where it may be exposed to ammonia, corrosive gases, acids or salts (e.g., fertilizer 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 (Type 4X). 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 the chapter headed 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

1. Installation
2. Installation location and position

		The inverter is suitable for vertical installation on a vertical wall or column.
		The inverter is suitable for installation on a sloping surface (min. slope of underside 10°).
		Do not install the inverter on a sloping surface with the connections upwards.
		Do not install the inverter in a sloping position on a vertical wall or column.
		Do not install the inverter in a horizontal position on a vertical wall or column.
		Do not install the inverter with the connections upwards on a vertical wall or column.
		Do not install the inverter overhanging with the connections upwards.
		Do not install the inverter overhanging with the connections downwards.
		Do not install the inverter on the ceiling.

1. Installation

IMPORTANT! The knockouts must be drilled out using a step drill bit only. The maximum conduit sizes are ½ - 1 inch / 13 - 25 mm.

IMPORTANT! Void warranty if the conduit holes are drilled improperly.

• Use suitable eye protection when drilling out the knockouts.
• Avoid drilling too far to ensure the connection area is not damaged.
• When drilling out the knockouts at the back, place the inverter on an even surface with the back upwards so that shavings and pieces of plastic can fall out of the inverter.
• If necessary, deburr the knockouts with a suitable tool and remove the drilling residues from the inverter.

1. Installation
2. Knockouts

IMPORTANT! The knockouts must be drilled out using a step drill bit only. The maximum conduit sizes are ½ - 1 inch / 13 - 25 mm.

IMPORTANT! Void warranty if the conduit holes are drilled improperly.

• Use suitable eye protection when drilling out the knockouts.
• Avoid drilling too far to ensure the connection area is not damaged.
• When drilling out the knockouts at the back, place the inverter on an even surface with the back upwards so that shavings and pieces of plastic can fall out of the inverter.
• If necessary, deburr the knockouts with a suitable tool and remove the drilling residues from the inverter.

1. Installation

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.

1. Installation
2. Installing the mounting bracket and attaching the inverter

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.

1. Installation
2. Installing the mounting bracket and attaching the inverter

The mounting bracket (illustration) can also be used as a guide.

The pre-drilled holes on the mounting bracket are intended for screws with a thread diameter of 6-8 mm (0.24-0.32 inches). The distance from the left to the right pre-drilled hole is 406 mm (16 inches).

Unevenness on the mounting surface (such as coarse-textured plaster) is largely compensated by the mounting bracket.

1. Installation
2. Installing the mounting bracket and attaching the inverter

1. Installation
2. Installing the mounting bracket and attaching the inverter

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

1

2

3

1. Installation
2. Installing the mounting bracket and attaching the inverter

IMPORTANT!
The mounting bracket must be affixed at a minimum of four points.

1. Installation
2. Installing the mounting bracket and attaching the inverter

Integrated grips, which facilitate lifting/clipping, are located on the side of the inverter.

1

Clip the inverter into the mounting bracket from above. The connections must point downwards.

The lower area of the inverter is pushed into the snap-in tabs until the inverter engages on both sides with an audible click.

Ensure the correct position of the inverter on both sides.

1. Installation

Single-core	Multi-stranded	Fine-stranded	Fine-stranded with ferrule and collar	Fine-stranded with ferrule without collar

1. Installation
2. Requirements for connecting the inverter

Single-core	Multi-stranded	Fine-stranded	Fine-stranded with ferrule and collar	Fine-stranded with ferrule without collar

1. Installation
2. Requirements for connecting the inverter

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

Grid connections with push-in terminal* Select a sufficiently large cable cross-section based on the actual device output.
Number of pins
4	AWG 12–6 / 4 - 16 mm²	AWG 12–6 / 4 - 16 mm²	AWG 12–6 / 4 - 16 mm²	AWG 12–6 / 4 - 16 mm²	AWG 12–6 / 4 - 16 mm²

Grid connections for backup power with push-in terminal* Select a sufficiently large cable cross-section based on the actual device output.
Number of pins
3	AWG 16–8 / 1.5 - 10 mm²	AWG 16–8 / 1.5 - 10 mm²	AWG 16–8 / 1.5 - 10 mm²	AWG 16–8 / 1.5 - 10 mm²	AWG 16–8 / 1.5 - 10 mm²

PV connections with push-in terminal Select a sufficiently large cable cross-section based on the actual device output.
Number of pins
2 x 5	AWG 14–8 / 2.5 - 10 mm²	AWG 14–8 / 2.5 - 10 mm²	AWG 14–8 / 2.5 - 10 mm²	AWG 14–8 / 2.5 - 10 mm²	AWG 14–8 / 2.5 - 10 mm²

Ground electrode terminal (6-pin) Select a sufficiently large cable cross-section based on the actual device output.
Number of pins
2	AWG 14–6 / 2.5 - 16 mm²	AWG 14–6 / 2.5 - 16 mm²	AWG 14–6 / 2.5 - 16 mm²	AWG 14–6 / 2.5 - 16 mm²	AWG 14–6 / 2.5 - 16 mm²
4	AWG 14–8 / 2.5 - 10 mm²	AWG 14–8 / 2.5 - 10 mm²	AWG 14–8 / 2.5 - 10 mm²	AWG 14–8 / 2.5 - 10 mm²	AWG 14–8 / 2.5 - 10 mm²

1. Installation
2. Requirements for connecting the inverter

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

IMPORTANT!
If several single conductors are connected to an input of the push-in terminals, connect the single conductors with a corresponding ferrule.

WSD connections with push-in terminal
Distance	Stripping length					Cable recommendation
100 m 109 yd	10 mm 0.39 inch	0.14 - 1.5 mm2 AWG 26 - 16	0.14 - 1.5 mm2 AWG 26 - 16	0.14 - 1 mm2 AWG 26 - 18	0.14 - 1.5 mm2 AWG 26 - 16	min. CAT 5 UTP (unshielded twisted pair)

Modbus connections with push-in terminal
Distance	Stripping length					Cable recommendation
300 m 328 yd	10 mm  0.39 inch	0.14 - 1.5 mm2 AWG 26 - 16	0.14 - 1.5 mm2 AWG 26 - 16	0.14 - 1 mm2 AWG 26 - 18	0.14 - 1.5 mm2 AWG 26 - 16	min. CAT 5 STP (shielded twisted pair)

IO connections with push-in terminal
Distance	Stripping length					Cable recommendation
30 m 32 yd	10 mm  0.39 inch	0.14 - 1.5 mm2 AWG 26 - 16	0.14 - 1.5 mm2 AWG 26 - 16	0.14 - 1 mm2 AWG 26 - 18	0.14 - 1.5 mm2 AWG 26 - 16	Single conductors possible

1. Installation
2. Requirements for connecting the inverter

Cable diameter for connection to the push-in terminal: 0.27 inches

IMPORTANT
For double-insulated cables with a cable diameter above 0.27 inches, the outer layer of insulation must be removed for the connection to the push-in terminal.

1. Installation
2. Requirements for connecting the inverter

NOTE!

The national regulations of the grid operator or other factors may require a residual current circuit breaker in the AC connection lead.

For this situation, a type A residual current circuit breaker is generally adequate. Nevertheless, false alarms can be triggered for the type A residual-current circuit breaker in individual cases and depending on local conditions. For this reason, in accordance with national legislation, Fronius recommends that a residual-current circuit breaker with a tripping current of at least 100 mA suitable for frequency converters be used.

IMPORTANT!
The inverter can be fused with max. an automatic circuit breaker 65 A.

1. Installation

1. Installation
2. Connecting the inverter to the public grid (AC side)

1. Installation
2. Connecting the inverter to the public grid (AC side)

1. Installation
2. Connecting the inverter to the public grid (AC side)

IMPORTANT! The ground conductor/grounding of the AC cable must be laid so that it is disconnected last in the event of a failure.

1

Turn off the automatic circuit breaker. Set the DC disconnector to the "Off" switch position.

2

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

Guide the mains cable from below through the electrical installation tube on the right side.
Remove the AC terminal.

4

Strip the insulation of the single conductors by 0.75 inches.
The cable cross-section must be selected in accordance with the instructions in Permitted cables for the electrical connection 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 terminal's operating lever until it engages.

NOTE!

Only one conductor may be connected to each pin.

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

5

L1	Phase conductor
Nsens	Neutral conductor*
L2	Phase conductor

* Valid for grid configurations with neutral conductors.

6

Fasten the grounding cable to the ground electrode terminal using a screwdriver (TX20) and a torque of 1.475 ft lbs / 2 Nm.
Insert the AC terminal into the AC slot until it engages.

1. Installation

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

• If insolation is constant and the temperature is falling, the open-circuit voltage of the PV modules will increase. The open-circuit voltage must not exceed the max. permissible system voltage. An open-circuit voltage above the indicated values will damage the inverter, and all warranty rights will become null and void.
• The temperature coefficients on the data sheet of the PV modules must be observed.
• Exact values for sizing the PV modules can be obtained using suitable calculation tools, such as the Fronius Solar.creator.

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

IMPORTANT!
Solar module strings must not be grounded.

1. Installation
2. Connecting solar module strings to the inverter

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

• If insolation is constant and the temperature is falling, the open-circuit voltage of the PV modules will increase. The open-circuit voltage must not exceed the max. permissible system voltage. An open-circuit voltage above the indicated values will damage the inverter, and all warranty rights will become null and void.
• The temperature coefficients on the data sheet of the PV modules must be observed.
• Exact values for sizing the PV modules can be obtained using suitable calculation tools, such as the Fronius Solar.creator.

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

IMPORTANT!
Solar module strings must not be grounded.

1. Installation
2. Connecting solar module strings to the inverter

1. Installation
2. Connecting solar module strings to the inverter

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

When starting for the first time, set up the PV Generator in accordance with the respective configuration (can also be carried out at a later date in the Device Configuration > Components menu area).

1. Installation
2. Connecting solar module strings to the inverter

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 arc detection requirement according to IEC 63027, the solar module strings must not be combined in front of the inverter.

Current equal to or less than 22 A (I_dcmax).

Module array settings:
PV 1: ON
PV 2: OFF

IMPORTANT!
The maximum current load of a single terminal is 22 A.

PV 1 less than or equal to 41.25 A (I_{SC PV1})
PV 2 less than or equal to 36 A (I_{SC PV2})

Module array settings:
PV 1: ON
PV 2: ON

IMPORTANT!
It is not allowed to connect PV1 and PV2 in parallel, as otherwise currents of over 22A per terminal connection could flow.

1. Installation
2. Connecting solar module strings to the inverter

1

2

3

Guide the DC cables through the electrical installation tube.

IMPORTANT!
Guide the cables through the electrical installation tube before stripping them in order to avoid twisting/bending single wires.

4

5

Select the cable cross-section in accordance with the instructions in Permitted cables for the electrical connection from page (→).
Strip the insulation of the single conductors by 0.47 inches. Lift to open the terminal's operating lever and insert the stripped single conductor into the slot provided in the terminal as far as it will go.
Then close the terminal's operating lever until it engages.

* For double-insulated cables, observe the max. cross-section of the insulation.

WARNING!

Danger from loose and/or incorrectly clamped single conductors in the terminal.

This can result in severe personal injury and damage to property.

Only connect one single conductor at each slot provided in the terminal.

Check that the single conductors are secure in the terminal.

Make sure that the single conductor has been fully inserted into the terminal and that no single wires are protruding out of the terminal.

6

7

8

Use a suitable measuring instrument to check the voltage and polarity of the DC cabling. Remove both DC terminals from the slots.

CAUTION!

Danger due to polarity reversal at the terminals.

This may result in severe damage to the inverter.

Use a suitable measuring instrument to check the polarity of the DC cabling.

Use a suitable measuring instrument to check the voltage (max. 600 V_DC)

9

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

1. Installation

1. Installation
2. Connecting the battery to the inverter

1. Installation
2. Connecting the battery to the inverter

IMPORTANT!
Prior to installing a battery, ensure that the battery is switched off. The max. DC cable length for the installation of external batteries must be taken into account according to the manufacturer's specifications, see chapter Suitable batteries on page (→).

1

Manually push the battery cables through the DC bushings.

* The battery ground conductor must be connected to the ground electrode terminal of the inverter,

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

2

3

Select the cable cross-section in accordance with the instructions in Permitted cables for the electrical connection from page (→).
Strip the insulation of the individual 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.

WARNING!

Danger due to individual conductors in the terminal that are loose and/or improperly connected.

This can result in serious injury and damage to property.

Only connect one single conductor in the slot provided for each terminal.

Check that the single conductor is held securely in the terminal.

Ensure that all of the single conductor is within the terminal and that no individual wire strands are sticking out of the terminal.

4

5

CAUTION!

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

This may result in damage to the battery and/or the PV modules due to discharge.

Only use the slots marked BAT for connecting the battery.

 

6

CAUTION!

Danger due to polarity reversal at the terminals.

Serious 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.

IMPORTANT!
Information for the battery-side connection can be found in the installation instructions from the relevant manufacturer.

1. Installation

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).

1. Installation
2. Connecting backup power - PV Point (OP)

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).

1. Installation
2. Connecting backup power - PV Point (OP)

Wiring proposal recommended by Fronius, see page (→).

1

Turn off the automatic circuit breaker. Set the DC disconnector to the "Off" switch position.

2

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 bores.

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 on the inside of the device is damaged (e.g., the connection block).

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

Deburr the bores using a suitable tool.

Remove the drilling residues from the inverter.

3

Drill out the knockout with a step drill.

4Insert the conduit into the knockout and fasten it using the torque specified by the manufacturer. Seal the conduit as per the chapter headed Preparing knockouts for connection on page (→).

5

Guide the mains cable through the conduit from below.
Remove the OP terminal.

6

Strip the insulation of the single conductors by 0.47 inches / 12 mm.
The cable cross-section must be between AWG 16 and AWG 8. 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 lines can be connected without ferrules.

7

L1´	Phase conductor
N´	Neutral conductor
N´	Ground conductor

NOTE!

The ground conductor must have a cross-section of AWG 14-8.

8

Fasten the ground conductor and PEN conductor to the ground electrode terminal using a screwdriver (TX20) and a torque of 1.47 ft-lbs / 2 Nm.

9

Insert the OP terminal into the OP slot until it engages.

1. Installation
2. Connecting backup power - PV Point (OP)

• During the initial installation and configuration
• After working on the switch cabinet
• During ongoing operation (recommendation: at least once a year)

For test mode, a battery charge of min. 30% is recommended.

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).

1. Installation

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 and one battery 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	Quantity Primary meter	Quantity Secondary meter
Modbus 0 (M0)		0	4
		0	2
		0	1
Modbus 1 (M1)		1	3

Example 2:

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

1. Installation
2. Connecting the data communication cables

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 and one battery 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	Quantity Primary meter	Quantity Secondary meter
Modbus 0 (M0)		0	4
		0	2
		0	1
Modbus 1 (M1)		1	3

Example 2:

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

1. Installation
2. Connecting the data communication cables

1

Drill out the knockout with a step drill.

2Insert the conduit into the hole and fasten it using the torque specified by the manufacturer. Seal the conduit as per the chapter headed Preparing knockouts for connection on page (→).

3

Run the data communication cables through the electrical installation tube from below.

1. Installation
2. Connecting the data communication cables

1

Strip 10 mm/ 0.39 inch 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 Permitted cables for the data communication connection 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 (→).

1. Installation
2. Connecting the data communication cables

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 operation.

For permissible cables and max. distances for the data communication area, refer to the chapter headed Permitted cables for the data communication connection on page (→).

IMPORTANT!Terminating resistors that are not positioned as illustrated can result in interference in the data communication.

1. Installation
2. Connecting the data communication cables

WARNING!

Limited rapid shutdown function in backup power mode (PV Point and Essential Backup)

If PV Point or Essential Backup is configured, rapid shutdown cannot be triggered via the loss of grid connection. This can result in serious personal injury and damage to the PV system.

A WSD switch must be installed for all backup power modes (PV-Point and Essential Backup) (see Installing the WSD (wired shutdown)). The rapid shutdown is then triggered via WSD.

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 (master). The WSD switch of all other inverters should be in position 0 (slave).

Max. distance between two devices: 109 yd / 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, these must be connected in series.

1. Installation

1

Place the cover on the connection area. Tighten the five screws by rotating them 180° to the right in the indicated order using a screwdriver (TX20).

2

Clip the housing cover in at the top of the inverter.
Press on the lower part of the housing cover and tighten the two screws 180° to the right using a TORX® screwdriver (TX20).
Turn the DC disconnector to the "On" switch position. Switch on the automatic circuit breaker. For systems with a battery, observe the switch-on sequence as per chapter Suitable batteries on page (→).

IMPORTANT! Open WLAN Access Point with the optical sensor, see chapter Button functions and LED status indicator on page (→)

1. Installation
2. Closing and commissioning the inverter

1

Place the cover on the connection area. Tighten the five screws by rotating them 180° to the right in the indicated order using a screwdriver (TX20).

2

Clip the housing cover in at the top of the inverter.
Press on the lower part of the housing cover and tighten the two screws 180° to the right using a TORX® screwdriver (TX20).
Turn the DC disconnector to the "On" switch position. Switch on the automatic circuit breaker. For systems with a battery, observe the switch-on sequence as per chapter Suitable batteries on page (→).

IMPORTANT! Open WLAN Access Point with the optical sensor, see chapter Button functions and LED status indicator on page (→)

1. Installation
2. Closing and commissioning the inverter

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

If the setup is canceled before completion, the input data is not saved and the start screen with the installation wizard is shown once again. The data is saved in the event of an interruption, e.g., a power failure. Commissioning is continued at the point at which the interruption occurred after the power supply is 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 starting the inverter for the first time. If the country setup needs to be changed at a later date, contact your installer/technical support.

1. Installation
2. Closing and commissioning the inverter

The Fronius Solar.start app is required for installation. Depending on the mobile device used to perform the installation, the app is available on the relevant platform.

1Download and install the Fronius Solar.start app.

2Open the access point by touching the sensor    .

✓Communications LED flashes blue.

3Open the Fronius Solar.start app and follow the installation wizard. Scan the QR code on the rating plate with a smartphone or tablet to connect to the inverter.

4Add system components in Fronius Solar.web and commission the PV system.

The network wizard and product setup can be performed independently. A network connection is required for the Fronius Solar.web installation wizard.

1. Installation
2. Closing and commissioning the inverter

WLAN:

1Open the access point by touching the sensor   

✓Communications LED flashes blue.

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

3Enter the password from the rating plate and confirm.
IMPORTANT!
To enter the password in Windows 10, first select the Connect using a security key instead link to be able to establish the connection with the password.

4Enter the IP address 192.168.250.181 in the address bar of the browser and confirm. The installation wizard opens.

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

6Add the system components in Fronius Solar.web and commission the PV system.

The network wizard and product setup can be performed independently. A network connection is required for the Fronius Solar.web installation wizard.

Ethernet:

1Establish a connection to the inverter (LAN1) using a network cable (min. CAT5 STP).

2Open the access point by touching the sensor once   

✓Communications LED flashes blue.

3Enter the IP address 169.254.0.180 in the address bar of the browser and confirm. The installation wizard opens.

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

5Add the system components in Fronius Solar.web and commission the PV system.

The network wizard and product setup can be performed independently. A network connection is required for the Fronius Solar.web installation wizard.

1. Installation

1

1. Turn off the automatic circuit breaker.
2. Turn the DC disconnector to the "Off" switch setting.

To start up the inverter again, follow the steps listed above in reverse order.

IMPORTANT!
Wait for the capacitors of the inverter to discharge!

1. Installation
2. De-energizing the inverter and switching it back on

1

1. Turn off the automatic circuit breaker.
2. Turn the DC disconnector to the "Off" switch setting.

To start up the inverter again, follow the steps listed above in reverse order.

IMPORTANT!
Wait for the capacitors of the inverter to discharge!

IMPORTANT!
Depending on the authorization of the user, settings can be made in the individual menu areas.

1. Settings – User interface of the inverter

IMPORTANT!
Depending on the authorization of the user, settings can be made in the individual menu areas.

1. Settings – User interface of the inverter
2. User settings

IMPORTANT!
Depending on the authorization of the user, settings can be made in the individual menu areas.

1. Settings – User interface of the inverter
2. User settings

1. Settings – User interface of the inverter

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 requiring backup power, the set values are not taken into account.

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

Charging of the battery from the public grid is enabled/disabled using the "Allow battery charging from public grid" setting.
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 Essential 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 behavior 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.

1. Settings – User interface of the inverter
2. Device configuration

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 requiring backup power, the set values are not taken into account.

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

Charging of the battery from the public grid is enabled/disabled using the "Allow battery charging from public grid" setting.
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 Essential 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 behavior 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.

1. Settings – User interface of the inverter
2. Device configuration

Backup power
Off, PV Point, or Essential Backup can be selected for backup power mode.
Essential Backup backup power mode 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 Essential Backup backup power mode.

IMPORTANT!
When configuring PV Point 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 4 pins can be selected for load management here. Additional load management settings are available in the Load management menu item.
Default: Pin 1

1. Settings – User interface of the inverter
2. Device configuration

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 signal
Ripple control signals are signals that are sent by the energy company in order to switch controllable loads on and off. Depending on the installation situation, ripple control signals can be dampened or amplified by the inverter. This can be counteracted if necessary by applying the following settings.

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

Insulation warning

Backup power

1. Settings – User interface of the inverter

"Self-Consumption Optimization"
Set the operating mode to "Manual" or "Automatic". The inverter always regulates to the set "Target Value at Feed-In Point". 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 and configured at the feed-in point.
• The "Allow battery charging from additional producers in home network" function must be activated in the "Components" → "Battery" menu area.

"Target Value at Feed-In Point"
If "Manual" has been selected under Self-Consumption Optimization, the "Operating Mode" ("Consumption"/"Feed-In") and the "Target Value at Feed-In Point" can be set.

IMPORTANT!
"Self-Consumption Optimization" has lower priority than "Battery Management".

External producers (only possible with active battery)
If further decentralized producers are installed in the house, and these are incorporated into the self-consumption control of the Fronius Hybrid inverter, the setting "Allow battery charging from additional producers in home network" must be activated in the menu area "Device Configuration" → "Components" (see Components on page (→)
.This means that energy can be drawn from the home network and fed into the battery via the Fronius inverter (battery support required). You can restrict how much power is consumed by the Fronius inverter by specifying the maximum AC power (AC max.). A maximum power consumption of the AC rated power of the Fronius inverter is possible.

"Battery Management"
Using the time-dependent battery control, it is possible to prevent or restrict charging/discharging of the battery and to specify a defined charging power.

• Permitted battery charging from the public grid
• Power limitation of the inverter, energy storage device, or overall system
• Control specifications via Modbus
• Self-Consumption Optimization

IMPORTANT!
The defined rules for battery control have the second lowest priority after Self-Consumption Optimization. Depending on the configuration, the rules may not be satisfied due to other settings.

• "Max. charging power"
  The battery is charged to the maximum level with the value set in the "Power" input field.
  If no feed-in to the public grid and/or direct consumption in the house is possible, the set "Max. charging power" value is ignored and the energy generated is charged into the battery.
• "Min. charging power"
  The battery is charged as a minimum by the value set in the input field "Power".
• "Max. discharge power"
  The battery is discharged at most by the value set in the input field "Power".
• "Min. discharge power"
  The battery is discharged as a minimum by the value set in the input field "Power".

The timing for when the rule applies is set in the "Time" input fields and by selecting the relevant "Weekdays".

It is not possible to define a time window over midnight (0:00 am).
Example: To set a control from 10 pm to 6 am, two inputs are required: "10 pm-11:59 pm" and "0:00 am-06 am".

1. Settings – User interface of the inverter
2. Energy management

"Self-Consumption Optimization"
Set the operating mode to "Manual" or "Automatic". The inverter always regulates to the set "Target Value at Feed-In Point". 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 and configured at the feed-in point.
• The "Allow battery charging from additional producers in home network" function must be activated in the "Components" → "Battery" menu area.

"Target Value at Feed-In Point"
If "Manual" has been selected under Self-Consumption Optimization, the "Operating Mode" ("Consumption"/"Feed-In") and the "Target Value at Feed-In Point" can be set.

IMPORTANT!
"Self-Consumption Optimization" has lower priority than "Battery Management".

External producers (only possible with active battery)
If further decentralized producers are installed in the house, and these are incorporated into the self-consumption control of the Fronius Hybrid inverter, the setting "Allow battery charging from additional producers in home network" must be activated in the menu area "Device Configuration" → "Components" (see Components on page (→)
.This means that energy can be drawn from the home network and fed into the battery via the Fronius inverter (battery support required). You can restrict how much power is consumed by the Fronius inverter by specifying the maximum AC power (AC max.). A maximum power consumption of the AC rated power of the Fronius inverter is possible.

"Battery Management"
Using the time-dependent battery control, it is possible to prevent or restrict charging/discharging of the battery and to specify a defined charging power.

• Permitted battery charging from the public grid
• Power limitation of the inverter, energy storage device, or overall system
• Control specifications via Modbus
• Self-Consumption Optimization

IMPORTANT!
The defined rules for battery control have the second lowest priority after Self-Consumption Optimization. Depending on the configuration, the rules may not be satisfied due to other settings.

• "Max. charging power"
  The battery is charged to the maximum level with the value set in the "Power" input field.
  If no feed-in to the public grid and/or direct consumption in the house is possible, the set "Max. charging power" value is ignored and the energy generated is charged into the battery.
• "Min. charging power"
  The battery is charged as a minimum by the value set in the input field "Power".
• "Max. discharge power"
  The battery is discharged at most by the value set in the input field "Power".
• "Min. discharge power"
  The battery is discharged as a minimum by the value set in the input field "Power".

The timing for when the rule applies is set in the "Time" input fields and by selecting the relevant "Weekdays".

It is not possible to define a time window over midnight (0:00 am).
Example: To set a control from 10 pm to 6 am, two inputs are required: "10 pm-11:59 pm" and "0:00 am-06 am".

1. Settings – User interface of the inverter
2. Energy management

The following examples serve to explain the energy flows. Efficiency levels are not taken into account.

Battery system

Battery system without photovoltaics, including second generator in the house

Battery system including second generator in the house

Battery system including second generator in the house
(with AC max. limitation)

1. Settings – User interface of the inverter
2. Energy management

A regulation always consists of a restriction or specification, and the time and days of the week when the regulation is active. The time of regulations with the same restriction (e.g., max. charging power) must not overlap.

Max. charging and discharging limits
One max. charging and one max. discharging power can be configured at the same time.

Specify charging range
It is possible to define a charging range using a min. and max. charging limit. In this case, it is not possible to discharge the battery.

Specify discharging range
It is possible to define a discharging range using a min. and max. discharging limit. In this case, it is not possible to charge the battery.

Specify a defined charge
It is possible to specify a defined charging power by setting the min. and max. charging power to the same value.

Specify a defined discharge
It is possible to specify a defined discharging power by setting the min. and max. discharging power to the same value.

Possible applications

• Time-dependent energy tariffs
• Battery reservation in the event of market-specific power limitation
• Time-dependent storage reservation for a backup power situation

1. Settings – User interface of the inverter
2. Energy management

The regulations in the Battery Management menu area enable optimal use of the energy generated. Situations may arise, however, in which PV power cannot be used in full due to the time-dependent battery control.

In this case, the inverter would have to reduce the PV power to 0 W, since the output power of the inverter is max. 6000 W and the device is already being fully utilized through discharging.

Since it does not make sense to waste PV power, the power limit is automatically adjusted in battery management such that no PV power is wasted. In the example above, this means that the battery is discharged only at 5000 W, so that the 1000 W PV power can be used.

1. Settings – User interface of the inverter
2. Energy management

"Rules"
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.

IMPORTANT!
An I/O is activated/deactivated after 60 seconds.

• Control is "Off" (deactivated).
• Control is effected by the "Power generated".
• Control is effected by "Excess power" (with feed-in limits). This option can only be selected if a meter has been connected. Control 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 activating the "Minimum runtime per switch-on process" for which the output is to be activated for each switch-on process.
• Field for activating the "Maximum runtime per day".
• Field for activating the "Target runtime" for which the output is to be activated in total per day (several switch-on processes are allowed for).

1. Settings – User interface of the inverter

1. Settings – User interface of the inverter
2. System

1. Settings – User interface of the inverter
2. System

All available updates for inverters and other Fronius devices are provided on the product pages and in the "Fronius Download Search" area at www.fronius.com .

1. Settings – User interface of the inverter
2. System

The guided setup wizard can be accessed here.

1. Settings – User interface of the inverter
2. System

All settings
Resets all configuration data, apart from the country setup. Changes to the country setup may only be made by authorized personnel.

All settings without network
Resets all configuration data, apart from the country setup and the network settings. Changes to the country setup may only be made by authorized personnel.

1. Settings – User interface of the inverter
2. System

After the guided setup wizard is finished, a configuration report according to the standards of the Electric Power Research Institute (EPRI) can be created.This function can also be retrieved in the System menu. The report serves as essential documentation to verify that the appropriate settings in compliance with utility requirements have been applied.

The filename contains the serial number of the inverter and can be changed individually. Click the button to download the report either as a csv or a pdf file.

1. Settings – User interface of the inverter
2. System

Current messagesAll current events of the linked system components are displayed here.

IMPORTANT!
Depending on the type of event, this must be confirmed via the "tick" button so that it can be further processed.

History
All events of the linked system components that are no longer present are displayed here.

1. Settings – User interface of the inverter
2. System

All the information regarding the system and the current settings is displayed and provided for download in this menu area.

1. Settings – User interface of the inverter
2. System

The power data and functional scope of the inverter are stored in the license file. If the inverter, power stage set, or data communication area is replaced, the license file must also be replaced.

1. Settings – User interface of the inverter
2. System

IMPORTANT!
The support user exclusively enables Fronius Technical Support to configure settings on the inverter via a secure connection. Access is deactivated by clicking the Terminate Support User Session button.

IMPORTANT!
The remote access exclusively enables Fronius Technical Support to access the inverter via a secure connection. In this case, diagnostics data are transmitted, which are used for troubleshooting. The remote access can be activated only upon request by Fronius Support.

1. Settings – User interface of the inverter

Server addresses for data transfer
If a firewall is used for outgoing connections, the below protocols, server addresses, and ports must be allowed for successful data transfer, see:
https://www.fronius.com/~/downloads/Solar%20Energy/firmware/SE_FW_Changelog_Firewall_Rules_EN.pdf

When using FRITZ!Box products, Internet access must be configured without any restrictions or limitations. The DHCP Lease Time (validity) must not be set to 0 (=infinite).

LAN:

After connecting, the status of the connection should be checked (refer to the chapter headed Internet services on page (→)).

WLAN:

Establishing a connection via WPS:

☐

The access point of the inverter must be active. This is opened by touching the sensor    > Communications LED flashes blue

1.

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

2.

Enter the password from the rating plate and confirm.
IMPORTANT!
To enter the password in Windows 10, first select the Connect using a security key instead link to be able to establish the connection with the password.

3.

Enter the IP address 192.168.250.181 in the address bar of the browser and confirm.

4.

In the Communication > Network > WLAN > WPS menu area, click the Activate button.

5.

Activate WPS on the WLAN router (see WLAN router documentation).

6.

Click on the Start button. The connection is established automatically.

7.

Log in to the user interface of the inverter.

8.

Check the network details and connection to Fronius Solar.web.

1Establish the connection to the inverter in the network settings (the inverter is displayed with the name "FRONIUS_" and the serial number of the device).

2Enter the password from the rating plate and confirm.
IMPORTANT!
To enter the password in Windows 10, first select the Connect using a security key instead link to be able to establish the connection with the password.

3Enter the IP address 192.168.250.181 in the address bar of the browser and confirm.

4In the Communication > Network > WLAN > WPS menu area, click the Activate button.

5Activate WPS on the WLAN router (see WLAN router documentation).

6Click on the Start button. The connection is established automatically.

7Log in to the user interface of the inverter.

8Check the network details and connection to Fronius Solar.web.

After connecting, the status of the connection should be checked (refer to the chapter headed Internet services on page (→)).

Selecting and connecting to a WLAN network:
The networks found are displayed in the list. Clicking on the Refresh button will    perform a new search for available WLAN networks. The selection list can be limited further via the Search network input field.

1Select network from the list.

2Select the connection type: Automatic or Static.

3For the Automatic connection type, enter the WLAN password and host name.

4For the Static connection type, enter the IP address, subnet mask, DNS, and gateway.

5Click the Connect button.

✓The connection is established.

After connecting, the status of the connection should be checked (refer to the chapter headed Internet services on page (→)).

Access point:

The inverter serves as the access point. A PC or smart device connects directly to the inverter. Connecting to the Internet is not possible. In this menu area, Network Name (SSID) and Network Key (PSK) can be assigned.
It is possible to operate a connection via WLAN and via the access point at the same time.

1. Settings – User interface of the inverter
2. Communication

Server addresses for data transfer
If a firewall is used for outgoing connections, the below protocols, server addresses, and ports must be allowed for successful data transfer, see:
https://www.fronius.com/~/downloads/Solar%20Energy/firmware/SE_FW_Changelog_Firewall_Rules_EN.pdf

When using FRITZ!Box products, Internet access must be configured without any restrictions or limitations. The DHCP Lease Time (validity) must not be set to 0 (=infinite).

LAN:

After connecting, the status of the connection should be checked (refer to the chapter headed Internet services on page (→)).

WLAN:

Establishing a connection via WPS:

☐

The access point of the inverter must be active. This is opened by touching the sensor    > Communications LED flashes blue

1.

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

2.

Enter the password from the rating plate and confirm.
IMPORTANT!
To enter the password in Windows 10, first select the Connect using a security key instead link to be able to establish the connection with the password.

3.

Enter the IP address 192.168.250.181 in the address bar of the browser and confirm.

4.

In the Communication > Network > WLAN > WPS menu area, click the Activate button.

5.

Activate WPS on the WLAN router (see WLAN router documentation).

6.

Click on the Start button. The connection is established automatically.

7.

Log in to the user interface of the inverter.

8.

Check the network details and connection to Fronius Solar.web.

1Establish the connection to the inverter in the network settings (the inverter is displayed with the name "FRONIUS_" and the serial number of the device).

2Enter the password from the rating plate and confirm.
IMPORTANT!
To enter the password in Windows 10, first select the Connect using a security key instead link to be able to establish the connection with the password.

3Enter the IP address 192.168.250.181 in the address bar of the browser and confirm.

4In the Communication > Network > WLAN > WPS menu area, click the Activate button.

5Activate WPS on the WLAN router (see WLAN router documentation).

6Click on the Start button. The connection is established automatically.

7Log in to the user interface of the inverter.

8Check the network details and connection to Fronius Solar.web.

After connecting, the status of the connection should be checked (refer to the chapter headed Internet services on page (→)).

Selecting and connecting to a WLAN network:
The networks found are displayed in the list. Clicking on the Refresh button will    perform a new search for available WLAN networks. The selection list can be limited further via the Search network input field.

1Select network from the list.

2Select the connection type: Automatic or Static.

3For the Automatic connection type, enter the WLAN password and host name.

4For the Static connection type, enter the IP address, subnet mask, DNS, and gateway.

5Click the Connect button.

✓The connection is established.

After connecting, the status of the connection should be checked (refer to the chapter headed Internet services on page (→)).

Access point:

The inverter serves as the access point. A PC or smart device connects directly to the inverter. Connecting to the Internet is not possible. In this menu area, Network Name (SSID) and Network Key (PSK) can be assigned.
It is possible to operate a connection via WLAN and via the access point at the same time.

1. Settings – User interface of the inverter
2. Communication

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 or 701, 702, 703, 704, 705, 706, 707, 708, 709, 710, 711, 712, 713
int + SF: SunSpec Inverter Model 101, 102, 103 or 201, 202, 203 or 701, 702, 703, 704, 705, 706, 707, 708, 709, 710, 711, 712, 713

"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

"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: 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 or 701, 702, 703, 704, 705, 706, 707, 708, 709, 710, 711, 712, 713
int + SF: SunSpec Inverter Model 101, 102, 103 or 201, 202, 203 or 701, 702, 703, 704, 705, 706, 707, 708, 709, 710, 711, 712, 713

"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

"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: 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

1. Settings – User interface of the inverter
2. Communication

The utility/energy supplier can influence the output power of the inverter with Cloud control. This requires the inverter to have an active Internet connection.

* Cloud control
A virtual power plant is an interconnection of multiple generators. This virtual power plant can be controlled by means of the cloud control via the Internet. An active inverter Internet connection is a prerequisite for this. System data are transferred.

1. Settings – User interface of the inverter
2. Communication

The Fronius Solar API is an IP-based, open JSON interface. If it is activated, IOT devices in the local network can access inverter information without authentication. For security reasons, the interface is deactivated ex works and must be activated if it is required for a third-party application (e.g., EV charger, Smart Home solutions, etc.).

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

In the event of a firmware update to version 1.14.x, the setting is taken from the Fronius Solar API. In systems with a version below 1.14.x, the Solar API is activated; with higher versions, it is deactivated but can be switched on and off via the menu

Activating the Fronius Solar API

Activate the “Activate communication via Solar API” function in the menu area “Communication” → “Solar API” on the user interface of the inverter.

1. Settings – User interface of the inverter
2. Communication

Information regarding connections and the current connection status is displayed in this menu. If there are problems with the connection, a short description of the error is displayed.

1. Settings – User interface of the inverter

The Country Setup menu area is intended exclusively for installers/service technicians from authorized specialist companies. To apply for the access code required for this menu area, see chapter Requesting inverter codes in Solar.SOS.

The selected country setup for the country in question contains preset parameters in accordance with nationally applicable standards and requirements. Changes may need to be made to the selected country setup depending on local grid conditions and the specifications of the utility.

1. Settings – User interface of the inverter
2. Safety and grid requirements