Fronius Symo 3-8,2 kW (Online) Installation Instructions

1. Installation location and position

1. Installation location and position

Fire prevention

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

1. Installation location and position

• Any use above and beyond this purpose
• Making any modifications to the inverter that have not been expressly approved by Fronius
• the installation of components that are not distributed or expressly approved by Fronius.

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

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

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

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

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

1. Installation location and position

		The inverter is suitable for indoor installation.
		The inverter is suitable for outdoor installation. Because of its IP 65 protection class, the inverter is resistant to water jets from any direction and can also be used in damp environments.
		In order to minimise the heating up of the inverter, do not expose it to direct insolation. Install the inverter in a protected location, e.g. in the vicinity of the solar modules or beneath the eaves.
		UDCmax at an altitude of: 0 to 2000 m = 1000 V 2000 to 2500 m = 900 V 2500 to 3000 m = 815 V 3000 to 3400 m = 750 V IMPORTANT! The inverter must not be installed or used at altitudes above 3400 m.
		Do not install the inverter in: Areas where ammonia, corrosive vapours, acids or salts are present (e.g. fertiliser stores, ventilation openings from cattle sheds, chemical plants, tanneries, etc.)
		During certain operating phases the inverter may produce a slight noise. For this reason it should not be installed in an occupied living area.
		Do not install the inverter in: Places where there is an increased risk of damage from farm animals (horses, cattle, sheep, pigs, etc.) Stables or adjoining areas Storage areas for hay, straw, chaff, animal feed, fertilisers, etc.
		All inverters are designed to be dust-tight. However, in areas with a heavy build-up of dust, the thermal efficiency may still be impaired by dust forming on the cooling surfaces. Regular cleaning is necessary in such situations. We therefore recommend not installing the inverter in areas and environments with high dust accumulation.
		Do not install the inverter in: Greenhouses Storage or processing areas for fruit, vegetables or viticulture products Areas used in the preparation of grain, green fodder or animal feeds

1. Installation location and position

	The inverter is suitable for vertical installation on a vertical wall or column.
	The inverter is suitable for a horizontal installation position.
	The inverter is suitable for installation on a sloping surface.
	Do not install the inverter on a sloping surface with its connection sockets at the top.
	Do not install the inverter at an angle on a vertical wall or column.
	Do not install the inverter horizontally on a vertical wall or pillar.
	Do not install the inverter on a vertical wall or pillar with its connection sockets facing upwards.
	Do not install the inverter overhanging with the connection sockets at the top.
	Do not install the inverter overhanging with the connection sockets at the bottom.
	Do not install the inverter on the ceiling.

1. Installation location and position

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

Install only on a solid, non-flammable surface
		Max. ambient temperatures: -25 °C / +60 °C
		Relative humidity: 0-100%
		The airflow within the inverter is from the left to the top (cold air taken in from the left, hot air dissipated out of the top). The exhaust air can reach a temperature of 70 °C.
If the inverter is installed in a switch cabinet or a similar sealed area, then forced-air ventilation must be provided to ensure adequate heat dissipation.
If the inverter is to be installed on the outer wall of a cattle shed, maintain a minimum all-round clearance of 2 m between the inverter and all ventilation and other openings in the building. The installation location must not be exposed to ammonia, corrosive vapours, salts or acids.

• the inverter is placed in the mounting bracket and permanently attached using screws，
• the cover for the data communication area is permanently attached to the inverter with screws.

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

1. Attaching the Mounting Bracket

• the inverter is placed in the mounting bracket and permanently attached using screws，
• the cover for the data communication area is permanently attached to the inverter with screws.

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

1. Attaching the Mounting Bracket

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

1. Attaching the Mounting Bracket

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

1. Attaching the Mounting Bracket

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1. Attaching the Mounting Bracket

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Tip: Install the inverter so that its display is at eye level

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Note! When mounting the mounting bracket on the wall, ensure that the mounting bracket does not become warped or deformed.

1. Attaching the Mounting Bracket

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

1. Attaching the Mounting Bracket

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

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1. Attaching the Mounting Bracket

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

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

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

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

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

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

Copper or aluminium: solid round conductor Copper: fine-stranded round conductor

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

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

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

Always follow the cable manufacturer instructions when using aluminium cables.

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

Connection conditions:

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

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

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

PE	Ground conductor / earthing
L1-L3	Phase conductor
N	Neutral conductor

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

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

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

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

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

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

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

With cable diameters greater than 21 mm, the M32 screw joint must be replaced by an M32 screw joint with a larger clamping area – item number: 42,0407,0780 – strain-relief device M32 x 1.5 KB 18–25.

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

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

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

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

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

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

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

• 6 x 15 A string fuses on the DC+ input and 6 x metal pins on the DC- input. The string fuses installed have a nominal voltage of 1000 V and measure 10x38 mm in size.
• 12 x metal pins

Replacing fuses:

1. String fuses

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

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

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

• 6 x 15 A string fuses on the DC+ input and 6 x metal pins on the DC- input. The string fuses installed have a nominal voltage of 1000 V and measure 10x38 mm in size.
• 12 x metal pins

Replacing fuses:

Fronius Symo 3.0-3-S / 3.7-3-S / 4.5-3-S

Connecting one solar module field to an inverter with a single MPP tracker

In the case of these inverters, there are 3 terminals available for each DC+ and DC-. The terminals are internally connected and are not fused. This means that a maximum of three strings can be connected directly to the inverter in parallel.
In this case, the solar modules must be able to carry at least the single reverse current (for 2 strings) or twice the reverse current (for 3 strings) (see data safety sheet for solar module).

Where there are more than three strings, an external combiner box with string fuses must be used. In this case, the strings must contain the same number of solar modules.

1. Notes regarding inverters with single and multiple MPP trackers

Fronius Symo 3.0-3-S / 3.7-3-S / 4.5-3-S

Connecting one solar module field to an inverter with a single MPP tracker

In the case of these inverters, there are 3 terminals available for each DC+ and DC-. The terminals are internally connected and are not fused. This means that a maximum of three strings can be connected directly to the inverter in parallel.
In this case, the solar modules must be able to carry at least the single reverse current (for 2 strings) or twice the reverse current (for 3 strings) (see data safety sheet for solar module).

Where there are more than three strings, an external combiner box with string fuses must be used. In this case, the strings must contain the same number of solar modules.

1. Notes regarding inverters with single and multiple MPP trackers

Fronius Symo 3.0-3-M - 8.2-3-M

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

In the case of inverters with multiple MPP trackers, there are 2 independent DC inputs (MPP trackers) available. These can be connected to an unequal number of solar modules.
There are two terminals for DC+ available per MPP tracker. In total there are four terminals for DC-.

Connecting two to four strings in multiple MPP tracker mode:
divide the strings between the two MPP tracker inputs (DC+1/DC+2). The DC- terminals can be used however you wish, as they are internally connected.
When starting for the first time, set MPP TRACKER 2 to "ON" (this can also be done later in the Basic menu)

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

Single MPP tracker mode on an inverter with multiple MPP trackers:

If the strings are connected using a string combiner box and only one bus is used for connection to the inverter, the connection DC+1 (pin 2) and DC+2 (pin 1) must be jumpered.
The wire diameter of the DC connection lead and the jumpering must be the same. Jumpering of the DC terminal is not necessary, as these terminals are jumpered internally.

When starting for the first time, set MPP TRACKER 2 to "OFF" (this can also be done later in the Basic menu)

If the inverter with multiple MPP trackers is operated in single MPP tracker mode, the currents from the connected DC leads are divided evenly across both inputs.

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

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

1. Connecting solar module strings to the inverter

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

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

1. 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 maximum permissible system voltage. If the open-circuit voltage exceeds the specified values, the inverter will be destroyed and all warranty claims will be forfeited.
• The temperature coefficients on the data sheet of the PV modules must be observed.
• Exact values for sizing the solar modules can be obtained using suitable calculation tools, such as the Fronius Solar.creator (creator.fronius.com).

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

1. Connecting solar module strings to the inverter

Cable cross section per DC cable:
minimum 2.5 mm² - maximum 16 mm²

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

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

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

1. Connecting solar module strings to the inverter

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

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

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

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

Connection conditions:

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

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

1. Connecting solar module strings to the inverter

CAUTION!

Danger due to incorrect polarity and voltage.

This may result in damage to the inverter.

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

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

When installed between 2001 and 2500 m above sea level: 900 V

When installed between 2501 and 3000 m above sea level: 815 V

When installed between 3001 and 3400 m above sea level: 750 V

1. Connecting solar module strings to the inverter

Note! Only break out as many target break points as there are cables.

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

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

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

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

IMPORTANT! Operating the inverter with one option card and two broken-out option card slots is not permitted.
To cater for this eventuality, a suitable blanking cover (42,0405,2020) is available from Fronius as an option.

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

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

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1. Data communication

IMPORTANT! Operating the inverter with one option card and two broken-out option card slots is not permitted.
To cater for this eventuality, a suitable blanking cover (42,0405,2020) is available from Fronius as an option.

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

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

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1. Data communication

IMPORTANT! Observe the ESD guidelines when handling option cards.

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

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

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The side sections of the housing lid are designed to function as holding and carrying handles.

• Never attach the inverter to the mounting bracket or swing it in unless the DC main switch is switched off.
• Never use force to attach the inverter or swing it in.

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

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1. Attaching the inverter to the mounting bracket

The side sections of the housing lid are designed to function as holding and carrying handles.

• Never attach the inverter to the mounting bracket or swing it in unless the DC main switch is switched off.
• Never use force to attach the inverter or swing it in.

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

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1. Attaching the inverter to the mounting bracket

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

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

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

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

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1. Starting for the first time

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

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

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

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1. Notes regarding software updates

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

1Plug the USB flash drive into the data communication area of the inverter

2Open the Setup menu

3Select the "USB" menu item

4Select "Software Update"

5Update the software

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

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

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

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

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

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

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

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

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

• FRONIUS.sys system file:
  This file stores information from the inverter that is irrelevant to the customer. The file must not be deleted separately. Only delete all of the files (sys, fld, csv) at one time.
  
• DALO.fld log file:
  A log file for reading the data in the Fronius Solar.access software.
  
  Further details on the Fronius Solar.access software can be found in the "DATCOM Details" operating instructions at http://www.fronius.com
  
• DATA.csv log file:
  A log file for reading the data in a spreadsheet program (e.g.: Microsoft® Excel)

Data structure on the USB flash drive

(1)	USB root directory
(2)	Fronius inverters (Fronius Galvo, Fronius Symo, Fronius Primo or Fronius Eco)
(3)	Inverter number - can be set in the Setup menu under DATCOM

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

Structure of the CSV file:

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

• FAT12
• FAT16
• FAT32

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

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

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

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

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

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

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

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

Safety instruction concerning the removal of a USB flash drive:
		IMPORTANT! To avoid any loss of data, a USB flash drive may only be removed if the following conditions are met: Only remove a USB flash drive via the 'Safely remove USB / HW' item on the SETUP menu The 'Data transmission' LED has stopped flashing or comes on steady.

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

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

1. Notes regarding maintenance

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

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

1. Notes regarding maintenance

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

1. Serial Number Sticker for Customer Use

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

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

*	57 x 20 mm
**	67 x 20 mm

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

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

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