Fronius Reserva 6.3 - 15.8 kWh 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

The conventions regarding how information is presented in the document, which are set out below, have been defined in order to increase the readability and comprehensibility of the document.

Application notes

IMPORTANT! Indicates application notes and other useful information. It does not indicate a harmful or dangerous situation.

Software

Software functions and elements of a graphical user interface (e.g., buttons, menu items) are highlighted in the text with this mark up.

Example: Click Save.

Instructions for action

1. Safety rules

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

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

In addition to the operating instructions, all applicable local 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, have anything stuck on them, or painted over

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

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

Never bypass or disable safety devices.

For the location of the safety and danger notices on the device, refer to the chapter headed "Information 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

• Do not expose the battery to strong shocks/vibrations.
• Do not deform or pierce the battery.
• Do not open or damage the battery.
• Creation of an explosive atmosphere.

• Short circuits at voltage-carrying parts of the battery, e.g., connection terminals.
• Do not expose the battery to direct sunlight.
• Keep the battery away from fire sources as well as flammable, explosive, and chemical materials.
• Do not place the battery into a fire.

• Contact with live parts such as connection terminals.
• Do not touch the battery with wet hands.
• Keep the battery out of reach of children and animals.
• A battery may pose a risk of electric shock and burns due to a high short circuit current.
• Risk of electric shock from batteries that are submerged in water.

• Do not immerse the battery in water.
• Risk of mechanical deformation due to load from foreign bodies.
• Do not step on or apply a load to the battery.

1. Safety rules

• Initiate rescue measures, alert and instruct emergency services.
• Contact with skin: Wash thoroughly with soap and water.
• Contact with eyes: Rinse eyes under clear running water for 15 minutes.
• Contact with respiratory tract: Leave the contaminated area immediately and ensure a supply of fresh air.
• If swallowed, do not induce vomiting. Vomiting can cause severe burns in the mouth, esophagus, and gastrointestinal tract.
• Immediately seek medical assistance after first aid measures have been taken.
• Only remove/dispose of leaked electrolyte with suitable protective equipment in accordance with the applicable specifications and guidelines.
• Supply the danger area with sufficient fresh air.

• Initiate rescue measures, alert and instruct emergency services.
• If the battery catches fire during operation, switch off the DC disconnector of the battery, unless there is a direct danger.
• Use a fire extinguisher in accordance with the applicable national regulations.

• Initiate rescue measures, alert and instruct emergency services.
• Disconnect the PV system and battery from the power supply, provided there is no immediate danger.
• Do not touch the battery if it is wet or submerged in water. Leave the danger zone immediately, alert the emergency services if there is water damage to the battery and contact customer service or the distributor for technical assistance.
• Battery installation and cable connections must be carried out by qualified specialists.

• Damaged batteries are dangerous and must be handled with extreme caution. They must not be used and may pose a danger to people and/or property. If the battery is damaged, immediately switch off the battery’s DC disconnector, contact the distributor to arrange repair or return.

1. Safety rules

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

All cables must be secured, undamaged, insulated, and adequately dimensioned. Loose connections, damaged or under-dimensioned cables must be repaired immediately by an authorized specialist company.

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

It is impossible to guarantee that third-party parts are designed and manufactured to meet the demands made on them, or that they satisfy safety requirements. Only use original spare parts.

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

Replace any damaged components or have them replaced immediately.

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

During operation, due to the high electrical voltages and currents, local electromagnetic fields (EMF) occur in the environment around the inverter and the Fronius system components as well as in the area of the PV modules including the supply lines.

In the case of exposure to humans, the required limit values are observed when the products are used in line with the intended use and the recommended distance of at least 20 cm is observed.

If these limit values are complied with, according to current scientific knowledge, no health-endangering effects from EMF exposure are to be expected. If wearers of prostheses (implants, metal parts in and on the body) as well as active physical aids (pacemakers, insulin pumps, hearing aids, etc.) are in the vicinity of components of the PV system, they must consult with the responsible doctor regarding possible health risks.

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

Connection of a point in the device, system, or installation to ground to protect 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 Electrical connection on page (→) must be observed. When using cable glands, ensure that the ground conductor is last to be subjected to a load in the event of a failure of the cable gland. The respective national standards and regulations and requirements for minimum cross-section must be observed when connecting the ground conductor.

(1)	Battery Management Module (BMS)
(2)	Battery module
(3)	Cover
(4)	Base plate

The Fronius Reserva battery is a stackable battery system. Up to a maximum of 4 battery systems can be operated in parallel operation. Lithium iron phosphate (LFP) batteries are known for their high thermal and chemical stability. The multi-level safety design as well as intelligent safety monitoring systems ensure safe operation throughout the total life cycle.

The Fronius Reserva can be used for emergency power supply in combination with an emergency power-capable Fronius inverter and emergency power switching with the appropriate configuration.

1. General information

(1)	Battery Management Module (BMS)
(2)	Battery module
(3)	Cover
(4)	Base plate

The Fronius Reserva battery is a stackable battery system. Up to a maximum of 4 battery systems can be operated in parallel operation. Lithium iron phosphate (LFP) batteries are known for their high thermal and chemical stability. The multi-level safety design as well as intelligent safety monitoring systems ensure safe operation throughout the total life cycle.

The Fronius Reserva can be used for emergency power supply in combination with an emergency power-capable Fronius inverter and emergency power switching with the appropriate configuration.

1. General information
2. Fronius Reserva

(1)	Battery Management Module (BMS)
(2)	Battery module
(3)	Cover
(4)	Base plate

The Fronius Reserva battery is a stackable battery system. Up to a maximum of 4 battery systems can be operated in parallel operation. Lithium iron phosphate (LFP) batteries are known for their high thermal and chemical stability. The multi-level safety design as well as intelligent safety monitoring systems ensure safe operation throughout the total life cycle.

The Fronius Reserva can be used for emergency power supply in combination with an emergency power-capable Fronius inverter and emergency power switching with the appropriate configuration.

1. General information
2. Fronius Reserva

1. General information
2. Fronius Reserva

Reserva module

Reserva BMS

1. General information
2. Fronius Reserva

• Store according to the instructions on the packaging and do not turn upside down.
• Store in a place that is protected from direct sunlight and rain.
• Keep at least 2 meters away from heat sources (e.g., radiators).
• Avoid contact with corrosive and organic substances (including gas).
• Defective batteries must be stored separately from intact batteries (e.g., through physical separation or different fire protection zones).
• The storage area should be dry, clean, and well ventilated.

• Batteries must be recharged by the manufacturer. For this purpose, the batteries must be sent to the manufacturer.

1. General information
2. Fronius Reserva

IMPORTANT!
Technical data, labels, warning notices, and safety symbols are affixed to the battery. This information must be kept in a legible condition and must not be removed, covered, pasted over, or painted over. The notices and symbols warn against incorrect operation, which may result in serious injury and property damage.

Rating plate

Explanation of symbols – Rating plate
	Warning: Electric voltage
	CE label – confirms compliance with applicable EU directives and regulations.
	Recyclable – the product is recyclable or made from recycled materials.
	WEEE marking – waste electrical and electronic equipment must be collected separately and recycled in an environmentally sound manner in accordance with the European Directive and national law.
	Separate collection – Battery Regulation 2023/1542/EU – Batteries must be collected separately in accordance with the EU regulation and handed over to waste management for environmentally sound disposal or recycling.

Warning notice

Explanation of symbols – Warning notice
	General Warning Sign
	Warning: Electric voltage
	Warning: Heavy load
	Do not reverse polarities
	Warning: Hazards due to the charging of batteries
	No open flame; fire, open source of ignition, and smoking prohibited
	Warning: Explosive substances
	Keep out of reach of children and animals
	Follow the operating instructions

1. General information
2. Fronius Reserva

The Fronius Reserva battery is intended for storing electrical energy from photovoltaic systems. It is used to store surplus energy and release it again if necessary in order to optimize the energy supply and maximize the self-consumption of solar energy. The battery is designed for use in private households and for small to medium-sized commercial applications.

The Fronius Reserva can be used for emergency power supply in combination with an emergency power-capable Fronius inverter and emergency power switching devices.

1. General information
2. Fronius Reserva

• Use other than or in excess of the intended use.
• The use of incompatible chargers.
• Improper handling, such as dropping or exposing to strong vibrations.
• Backup power mode without suitable switching devices.
• Any modification or manipulation of the battery system that is not expressly recommended by Fronius.
• The supply of loads that require an uninterrupted supply (e.g., IT networks, life-sustaining medical devices).

1. General information

		PV module generates direct current
		Fronius hybrid inverter converts direct current into alternating current and charges the battery (battery charging requires battery support).
		Battery is coupled to the inverter on the direct current side and stores electrical energy.
		Primary meter records the load curve of the system and makes the measured data available for energy profiling in Fronius Solar.web. The primary meter also controls the dynamic power of feeding in.
		Loads in the system are the loads connected in the system.
		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 hybrid inverter converts direct current into alternating current and charges the battery (battery charging requires battery support).
		Battery is coupled to the inverter on the direct current side and stores electrical energy.
		Primary meter records the load curve of the system and makes the measured data available for energy profiling in Fronius Solar.web. The primary meter also controls the dynamic power of feeding in.
		Loads in the system are the loads connected in the system.
		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)	The solar energy generated supplies the loads in the house, the battery is charged with solar energy and the surplus energy production is fed into the public grid.

1. General information
2. Different operating modes

(1)	There is no solar energy available from the PV modules.
(2)	The loads in the house are supplied with energy from the battery.
(3)	The loads in the house are supplied with energy from the public grid if the energy from the battery is insufficient.

1. General information
2. Different operating modes

IMPORTANT!
Appropriate installation and configuration is a prerequisite for the backup power operating mode.

(1)	The loads in the house are supplied with solar energy from the PV modules.
(2)	The loads in the house are supplied with energy from the battery if the solar energy from the PV modules is insufficient.
(3)	There is no energy available from the public grid.

1. General information
2. Different operating modes

• Flexible electricity tariff
• The “Energy Cost Assistant” function in Fronius Solar.web must be activated.
• The restrictions of the grid operator must be taken into account.

(1)	There is no solar energy available from the PV modules.
(2)	The battery is charged using energy from the public grid at a low electricity price.
(3)	The loads in the house are supplied with energy from the battery.

1. General information
2. Different operating modes

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

* Charging the battery from the public grid depends 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

1. General information
2. Operating controls and connections

1. General information
2. Operating controls and connections

1. General information
2. Operating controls and connections

Status	Description	LED status
		LED 1	LED 2	LED 3	LED 4	LED 5
Starting procedure	The number of the battery system is checked and started
Start	Primary battery
	Secondary battery 1		-	-	-
	Secondary battery 2		-	-		-
	Secondary battery 3		-	-
Checking the application mode	Successful parallel or single application mode verification	5 x	State of Charge (SoC) is displayed
	Establishing a connection for parallel operation		State of Charge (SoC) is displayed
Charging (SoC)	0% - 25.0%			-	-	-
	25.1% - 50.0%				-	-
	50.1% - 75.0%					-
	75.1% - 99.9%
	100%
Discharging / no load	100% - 75.1%
	75.0% - 50.1%					-
	50.0% - 25.1%				-	-
	25.0% - 0%			-	-	-
Error	There is an error; please contact the technical specialist.		*	*	*	*

	Flashes green 1/s
	Flashes green 2/s
	Lights up green
	Lights up red
*	The LED status varies depending on the error.

All installed components in the PV system must be compatible with each other and have the necessary configuration options. The installed components must not restrict or negatively affect the functioning of the PV system.

1. Installation

All installed components in the PV system must be compatible with each other and have the necessary configuration options. The installed components must not restrict or negatively affect the functioning of the PV system.

1. Installation
2. General

All installed components in the PV system must be compatible with each other and have the necessary configuration options. The installed components must not restrict or negatively affect the functioning of the PV system.

1. Installation

IMPORTANT!
The installation location must be selected so that all operating elements are easily accessible and easy to operate. The battery must not be covered or installed in housings.

		The battery must not be installed or operated at more than 2,000 m above sea level.
		Max. ambient temperature range: -20 °C to +55 °C
		Relative humidity: 5 to 95%
		The battery is suitable for indoor installation.
		The battery is suitable for protected outdoor areas (e.g., under a roof overhang).
		In order to keep battery heating as low as possible, do not expose the battery to direct sunlight.
		The battery is not suitable for unprotected outdoor installation. Due to the IP 65 protection rating, the battery is dust-tight and protected against water jets from all directions. The battery is not fully waterproof and must not be submerged in water.
		Do not mount the battery near fire sources, or flammable, explosive, and chemical materials.

1. Installation
2. Choosing the Location

IMPORTANT!
The installation location must be selected so that all operating elements are easily accessible and easy to operate. The battery must not be covered or installed in housings.

		The battery must not be installed or operated at more than 2,000 m above sea level.
		Max. ambient temperature range: -20 °C to +55 °C
		Relative humidity: 5 to 95%
		The battery is suitable for indoor installation.
		The battery is suitable for protected outdoor areas (e.g., under a roof overhang).
		In order to keep battery heating as low as possible, do not expose the battery to direct sunlight.
		The battery is not suitable for unprotected outdoor installation. Due to the IP 65 protection rating, the battery is dust-tight and protected against water jets from all directions. The battery is not fully waterproof and must not be submerged in water.
		Do not mount the battery near fire sources, or flammable, explosive, and chemical materials.

1. Installation

Use appropriate mounting materials depending on the surface and pay attention to the recommendation for the screw dimensions for the L-shaped mounting bracket. The technical specialist is responsible for selecting the proper mounting materials.

1. Installation
2. Installation

Use appropriate mounting materials depending on the surface and pay attention to the recommendation for the screw dimensions for the L-shaped mounting bracket. The technical specialist is responsible for selecting the proper mounting materials.

1. Installation
2. Installation

A minimum distance of 300 mm is recommended on the left and right side of the battery.

For detailed information on the dimensions of the battery, see chapter Dimensions on page(→).

IMPORTANT!
The battery system must be mounted on a sufficiently load-bearing and non-flammable surface ( e.g., brick or concrete wall). Make sure there are sufficient fastening points, as described below. These depend on the number of Reserva modules used.

1

Align the drilling template horizontally on the wall and stick it on.

2

Drill holes at the required fastening points.

3

Carefully loosen the drilling template from the wall.

1. Installation
2. Installation

WARNING!

Danger of electric shock due to live HVB connectors.

This can result in serious injury and damage to property.

Use the integrated handles for lifting and lowering.

Wear personal protective equipment.

Take off conductive objects, such as watches, bracelets, and rings.

WARNING!

Danger due to contaminated battery connections.

This can result in serious injury and damage to property.

Protect battery connections from soiling.

Check the battery connections for contamination.

Wear personal protective equipment (insulated gloves, safety goggles, protective clothing) and a lint-free cloth to clean contaminated battery connections; do not use cleaning agents.

CAUTION!

Danger due to improper handling during transport or installation of the battery.

This can result in injuries.

Use the integrated handles for lifting and lowering.

When lowering the battery, ensure that no limbs are located between the attachment and the battery.

Wear personal protective equipment.

Make sure that there are sufficient fastening points to prevent the battery from tipping over.

1

Position the base plate parallel to the wall at a distance of 50 ‑ 70 mm and align it horizontally by turning the adjusting feet with a socket wrench (width across flats 13).

2

Place the Reserva module parallel to the base plate.

3

Fasten the 2 connecting tabs using the screws supplied (TX30) and to a torque of 5 Nm.

4

Fasten the L‑shaped mounting brackets using the supplied screws (TX30), washers and to a torque of 5 Nm. Insert the bolt anchors into the wall and fasten with a socket wrench (width across flats 13).

5

Place the Reserva BMS parallel to the previous Reserva module.

6

Fasten the 2 connecting tabs using the screws supplied (TX30) and to a torque of 5 Nm.

7

Fasten the L‑shaped mounting brackets using the supplied screws (TX30), washers and to a torque of 5 Nm. Insert the bolt anchors into the wall and fasten with a socket wrench (width across flats 13).

1. Installation

Solid	Multi-stranded	Fine-stranded

1. Installation
2. Requirements for connection

Solid	Multi-stranded	Fine-stranded

1. Installation
2. Requirements for connection

IMPORTANT!
The cables used must comply with the applicable national standards and guidelines.

Round copper conductors can be connected to the terminals as described below.

DC connections
Manufacturer	Max. Ø Insulation layer	Stripping length
Amphenol	7.8 mm	7 mm	6 mm2	6 mm2

PE ground conductor connection (ring cable lug)
Material	Hole Ø	Torque
Copper with tin coating	6 mm	5 Nm	10 mm2	10 mm2	10 mm2

1. Installation
2. Requirements for connection

RJ45 connection
Cable recommendation	Max. cable length
Min. CAT 5 STP (shielded twisted pair)	30 m	0.14 - 1.5 mm2	0.14 - 1.5 mm2

1. Installation

1. Installation
2. Electrical connection

1. Installation
2. Electrical connection

1

Turn off the automatic circuit breaker. Set the DC disconnector of the inverter to the “Off” switch position.

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

1. Installation
2. Electrical connection

IMPORTANT!
The battery ground conductor must be connected externally (e.g., switch cabinet). The technical specialist is responsible for selecting the ring cable lug and the screw lock.

1

Fasten the ground conductor (PE) to the ground conductor connection using the screws supplied (TX30) and to a torque of 5 Nm.

1. Installation
2. Electrical connection

IMPORTANT!
The maximum cable length between the inverter and the battery is 30 m.

1

Remove the caps.

2

Select the cable cross-section in accordance with the instructions in Permitted cables for the electrical connection on page (→). Strip the insulation of the single conductors by 7 mm (0.27 inch).

3

Disassemble the Amphenol plugs.

4

Guide the DC cable through the cable gland and the sealing ring. Crimp the crimp contact onto the stripped DC cable using a suitable Amphenol crimping tool. Push the crimp contact into the Amphenol plug until there is an audible click.

5

Tighten the cable gland using the supplied Amphenol plug tool to a torque of 2.5 Nm ‑ 3 Nm.

6

Insert the Amphenol plugs (+/-) into the respective slot until they engage.

1. Installation
2. Electrical connection

IMPORTANT!
The max. cable length between the inverter and battery is 30 m; between the battery systems the max. cable length is 10 m. The cable lengths between the battery systems should be as short as possible to avoid a voltage drop.

1

Remove the caps.

2

Select the cable cross-section in accordance with the instructions in Permitted cables for the electrical connection on page (→). Strip the insulation of the single conductors by 7 mm (0.27 inch).

3

Disassemble the Amphenol plugs.

4

Guide the DC cable through the cable gland and the sealing ring. Crimp the crimp contact onto the stripped DC cable using a suitable Amphenol crimping tool. Push the crimp contact into the Amphenol plug until there is an audible click.

5

Tighten the cable gland using the supplied Amphenol plug tool to a torque of 2.5 Nm ‑ 3 Nm.

6

Insert the Amphenol plugs (+/-) into the respective slot until they engage.

1. Installation

• Use network cables of type CAT5 STP or higher.
• Use a twisted cable pair for corresponding data cables.
• Use double insulated or sheathed data cables when they are near to bare conductors.
• Use shielded twisted pair cables to avoid interference.

1. Installation
2. Connecting the data communication cables

• Use network cables of type CAT5 STP or higher.
• Use a twisted cable pair for corresponding data cables.
• Use double insulated or sheathed data cables when they are near to bare conductors.
• Use shielded twisted pair cables to avoid interference.

1. Installation
2. Connecting the data communication cables

IMPORTANT!
The maximum cable length between the inverter and the battery is 30 m.

IMPORTANT!
In case of improper connection, it is not possible to guarantee the strain relief and protection class IP65 for the data communication connection. The maximum possible width of the RJ45 plug is 12 mm. Only RJ45 plugs without locking and anti-kink protection are compatible with the LP-16-C/RJ45 plug.

1

First, guide the data cables through the union nut and then through the cable gland. Insert the plug insert until there is an audible click. Fasten the union nut to the cable gland.

2

Connect the data cable to the “INVERTER” data communication connection until there is an audible click.

1. Installation
2. Connecting the data communication cables

IMPORTANT!
The max. cable length between the inverter and battery is 30 m; between the battery systems the max. cable length is 10 m.

IMPORTANT!
In case of improper connection, it is not possible to guarantee the strain relief and safety class IP65 for the data communication connection. The maximum possible width of the RJ45 plug is 12 mm. Only RJ45 plugs without locking and anti-kink protection are compatible with the cable gland.

Overview
The terminating resistors are installed at the factory. For parallel battery operation, the terminating resistors must be installed as shown below.

1

First, guide the data cable through the union nut, then through the seal and then through the cable gland. Fasten the union nut to the cable gland.

2

Remove the closure caps of the data communication connections “IN” (data input) or “OUT” (data output) by rotating them 90° to the left.

3

Connect the data cable to the “IN” (data input) or “OUT” (data output) data communication connection and rotate 90° to the right.

1. Installation
2. Connecting the data communication cables

Installation without terminating resistors can lead to interference in the operation of the PV system. To ensure smooth operation, install the terminating resistors according to the following overview.

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

1. Installation

1

Place the cover (top) on the Reserva BMS and slide it to the right until the cover clicks into place.

2

Push in the side covers from above, starting with the base plate, until the covers engage.

3

Push in the side covers of the Reserva BMS from above until the covers engage. Feed the cables through the side cutout in the cover.

1. Installation
2. Finally...

1

Place the cover (top) on the Reserva BMS and slide it to the right until the cover clicks into place.

2

Push in the side covers from above, starting with the base plate, until the covers engage.

3

Push in the side covers of the Reserva BMS from above until the covers engage. Feed the cables through the side cutout in the cover.

1. Installation

1. Installation
2. Adding/replacing the Reserva module of the battery system

1. Installation
2. Adding/replacing the Reserva module of the battery system

• The state of charge (SoC) must be 30% (activate Service Mode, see chapter Setting the State of Charge (SoC) with Service Mode on page(→)).
• Carry out expansion within the first 2 years from starting for the first time.
• Charging/discharging cycle count <300

1. Installation
2. Adding/replacing the Reserva module of the battery system

1. Installation
2. Adding/replacing the Reserva module of the battery system

1

Turn off the automatic circuit breaker. Set the DC disconnector of the inverter to the “Off” switch position.

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

2

Set the DC disconnector of the Reserva to the “Off” switch position.

1. Installation
2. Adding/replacing the Reserva module of the battery system

1

Push the left and right covers on the Reserva BMS up and lift them off.

2

Starting at the top Reserva module, push the left and right covers up and lift them off.

3

Slide the top cover on the Reserva BMS to the left and lift off.

1. Installation
2. Adding/replacing the Reserva module of the battery system

1

Loosen the Amphenol plugs (+/-) using the Amphenol plug tool.

2

Press the locking mechanism on the plug of the “INVERTER” data cable and remove the plug.

For batteries in parallel operation, also disconnect the “IN” and “OUT” data cables.

3

Loosen the ground conductor using a screwdriver (TX30).

4

Loosen the L‑shaped mounting brackets.

5

Undo the 2 connecting tabs.

6

Lift the Reserva BMS installed in parallel off the last Reserva module.

1. Installation
2. Adding/replacing the Reserva module of the battery system

1

Position the new Reserva module in parallel.

2

Fasten the 2 connecting tabs using the screws supplied (TX30) and to a torque of 5 Nm.

3

IMPORTANT!
Ensure there are sufficient fastening points, see chapter Wall installation on page(→).

Fasten the L-shaped mounting brackets using the supplied screws (TX30), washers and to a torque of 5 Nm. Insert the bolt anchors into the wall and fasten with a socket wrench (width across flats 13).

1. Installation
2. Adding/replacing the Reserva module of the battery system

1

Place the Reserva BMS parallel to the previous Reserva module.

2

Fasten the 2 connecting tabs using the screws supplied (TX30) and to a torque of 5 Nm.

3

Fasten the L‑shaped mounting brackets using the supplied screws (TX30), washers and to a torque of 5 Nm. Insert the bolt anchors into the wall and fasten with a socket wrench (width across flats 13).

1. Installation
2. Adding/replacing the Reserva module of the battery system

1

Fasten the ground conductor (PE) to the ground conductor connection using the screws supplied (TX30) and to a torque of 5 Nm.

2

Insert the Amphenol plugs (+/-) into the respective slot until they engage.

3

Connect the data cable to the “INVERTER” data communication connection until there is an audible click.

1. Installation
2. Adding/replacing the Reserva module of the battery system

1

Place the cover (top) on the Reserva BMS and slide it to the right until the cover clicks into place.

2

Push in the side covers from above, starting with the base plate, until the covers engage.

3

Push in the side covers of the Reserva BMS from above until the covers engage. Feed the cables through the side cutout in the cover.

1. Installation
2. Adding/replacing the Reserva module of the battery system

1

Turn the DC disconnector of the inverter to the “On” switch setting. Turn on the automatic circuit breaker.

2

Turn the DC disconnector of the battery to the “On” switch setting.

3

Close the cover of the DC disconnector until there is an audible click and secure it against unauthorized opening with the screws. Press the start button once to start the battery.

1. Commissioning

1

Turn the DC disconnector of the inverter to the “On” switch setting. Turn on the automatic circuit breaker.

2

Turn the DC disconnector of the battery to the “On” switch setting.

3

Close the cover of the DC disconnector until there is an audible click and secure it against unauthorized opening with the screws. Press the start button once to start the battery.

1. Commissioning
2. Switching on the photovoltaic system

1

Turn the DC disconnector of the inverter to the “On” switch setting. Turn on the automatic circuit breaker.

2

Turn the DC disconnector of the battery to the “On” switch setting.

3

Close the cover of the DC disconnector until there is an audible click and secure it against unauthorized opening with the screws. Press the start button once to start the battery.

1. Commissioning
2. Switching on the photovoltaic system

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. Commissioning
2. Switching on the photovoltaic system
3. 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. Commissioning
2. Switching on the photovoltaic system
3. 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. Commissioning
2. Switching on the photovoltaic system
3. Manual system start

As soon as energy is available again, the inverter and the battery start operating automatically. If the battery has switched off to protect against deep discharge, for example, the battery must be started manually (dark start), see chapter Switching on the photovoltaic system on page(→).

1. Commissioning
2. Switching on the photovoltaic system
3. Manual system start

To start backup power mode, the inverter requires energy from the battery. This is done manually on the battery as described below.

1

Turn the DC disconnector of the battery to the “On” switch setting.

2

Close the cover of the DC disconnector until there is an audible click and secure it against unauthorized opening with the screws. Press and hold the start button for 5 seconds to start the battery.

1. Commissioning

IMPORTANT! Settings in the Device Configuration menu item may only be entered by staff trained to do so!

To access the Device Configuration menu item, you must log in with user “Technician” and the technician password.

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

IMPORTANT! Settings in the Device Configuration menu item may only be entered by staff trained to do so!

To access the Device Configuration menu item, you must log in with user “Technician” and the technician password.

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

The Fronius Solar.start app is required for commissioning. 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 on the inverter by touching the sensor    .

✓Communications LED flashes blue.

3Open the Fronius Solar.start app and scan the QR code on the rating plate of the inverter using a smartphone or tablet to connect to the inverter.

4Add the battery as in chapter Adding a battery in the user interface of the inverter on page (→).

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

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

WiFi:

1Open the access point on the inverter 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 inverter’s 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 to connect to the inverter.

5Add the battery as in chapter Adding a battery in the user interface of the inverter on page (→).

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 on the inverter by touching the sensor    .

✓Communications LED flashes blue.

3Enter the IP address 169.254.0.180 in the address bar of the browser and confirm to connect to the inverter.

4Add the battery as in chapter Adding a battery in the user interface of the inverter on page (→).

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

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

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

Obsolete firmware/software versions may lead to incompatibilities between the inverter and the battery. In this case, the following steps are to be performed:

All available updates are provided on the product page and in the “Fronius Download Search” area at www.fronius.com.

Wipe the surfaces of the battery system, if necessary, with a damp cloth.
Do not use cleaning agents, scouring agents, solvents, or similar products to clean the inverter.

1. Appendix

Wipe the surfaces of the battery system, if necessary, with a damp cloth.
Do not use cleaning agents, scouring agents, solvents, or similar products to clean the inverter.

1. Appendix
2. Service, maintenance and disposal

Wipe the surfaces of the battery system, if necessary, with a damp cloth.
Do not use cleaning agents, scouring agents, solvents, or similar products to clean the inverter.

1. Appendix
2. Service, maintenance and disposal

Maintenance and service work may only be carried out by qualified technical personnel.

1. Appendix
2. Service, maintenance and disposal

Forced re-charging to protect against deep discharge is carried out automatically using solar energy or energy from the public grid if the minimum state of charge (SoC) of the battery is undershot and the prerequisites are met.

• The DC disconnector of the battery must be in the “ON” switch position.
• Grid-connected operation of the inverter.

Start forced recharging if the battery has automatically switched off to protect against deep discharge; see chapter Switching on the photovoltaic system on page(→).

1. Appendix
2. Service, maintenance and disposal

Waste electrical and electronic equipment must be collected separately and recycled in an environmentally sound manner in accordance with the European Directive and national law. Used equipment must be returned to the distributor or through a local authorized collection and disposal system. Proper disposal of the used device promotes sustainable recycling of resources and prevents negative effects on health and the environment.

• Collect separately
• Observe local regulations
• Crush cardboard boxes

1. Appendix

Detailed warranty conditions specific to your country can be found at www.fronius.com/solar/garantie .

1. Appendix
2. Warranty provisions

Detailed warranty conditions specific to your country can be found at www.fronius.com/solar/garantie .

1. Appendix

1. Appendix
2. Technical data

1. Appendix
2. Technical data

1. Dimensions