Fronius Primo 208-240 Installation Installation instructions

1. Safety

1. Safety

This manual contains important instructions for the inverter that must be followed during installation and maintenance of the inverter.

The inverter is designed and tested according to international safety requirements. Due to its electrical and electronic components, certain precautions must be taken when installing and operating the inverter.
In order to reduce the risk of injury to persons and to ensure safe installation and operation of the inverter, be sure to read these Operating Instructions carefully and follow all instructions and safety instructions.

Failure to observe the Operating Instructions and safety instructions can void the warranty and/or cause damage to the inverters or other property damage!

1. Safety

All electrical installations must be carried out in accordance with the National Electrical Code, ANSI/NFPA 70, and any other codes and regulations applicable to the installation site.

For installations in Canada, the installations must be done in accordance with applicable Canadian standards.

1. Safety

Fire prevention

1. Safety

The inverter is designed exclusively to be connected and used with nongrounded solar modules. The solar modules cannot be grounded at either the positive or negative pole.

• utilization for any other purpose, or in any other manner
• alterations to the inverter that are not expressly recommended by Fronius
• installation of components that are not expressly recommended or sold by Fronius.

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

• carefully reading and obeying all the instructions and safety and danger notices in the operating instructions
• carrying out all the specified inspection and servicing work
• installation as per operating instructions.

When configuring the photovoltaic system, make sure that all photovoltaic system components are operating completely within their permitted operating range.

All measures recommended by the solar module manufacturer for maintaining solar module properties must be followed.

Utility company regulations regarding grid power feed must be followed.

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

	The inverter is suitable for indoor installation.
	The inverter is suitable for outdoor installation. Because of its NEMA4X protection class, the inverter is not susceptible to hose 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 solar modules or under an overhanging roof.
	Fronius Primo 3.8–8.2
	Altitude above sea level: up to 13,123 ft. (4000 m) IMPORTANT! The inverter must not be installed or operated above an altitude of 13,123 ft (4000 m).
	Fronius Primo 10.0–15.0
	Altitude above sea level: up to 11,811 ft. (3600 m) IMPORTANT! The inverter must not be installed or operated above an altitude of 11,811 ft (3600 m).
	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)
	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 designed to be dust-proof in principle. However, in areas of high dust accumulation, the cooling surfaces can become dusty, which can impair the thermal performance. In this case, the dust must be removed regularly. 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

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

	The inverter is suitable for indoor installation.
	The inverter is suitable for outdoor installation. Because of its NEMA4X protection class, the inverter is not susceptible to hose 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 solar modules or under an overhanging roof.
	Fronius Primo 3.8–8.2
	Altitude above sea level: up to 13,123 ft. (4000 m) IMPORTANT! The inverter must not be installed or operated above an altitude of 13,123 ft (4000 m).
	Fronius Primo 10.0–15.0
	Altitude above sea level: up to 11,811 ft. (3600 m) IMPORTANT! The inverter must not be installed or operated above an altitude of 11,811 ft (3600 m).
	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)
	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 designed to be dust-proof in principle. However, in areas of high dust accumulation, the cooling surfaces can become dusty, which can impair the thermal performance. In this case, the dust must be removed regularly. 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 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 location and position

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

Only install on a solid, non-flammable surface
	Max. ambient temperatures: -40°F to +131°F (-40°C to +55°C)
	Relative humidity: 0 - 100%
	The air flow direction within the inverter is from left and right to top (cold air intake on the left and right, hot air outflow at the top). The waste air can reach a temperature of 70°C.
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
If you wish to install the inverter on the outer walls of a cattle shed, it is important to maintain a minimum clearance of 6 ft. 7 in. (2 m) between all sides of the inverter and air vents and other openings. The place of installation should not be exposed to ammonia, corrosive gases, salts, or acids.

1. Installation location and position

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

Only install on a solid, non-flammable surface
	Max. ambient temperatures: -40°F to +140°F (-40°C to +60°C)
	Relative humidity: 0 - 100%
	The air flow direction within the inverter is from right to top (cold air intake on the right, hot air outflow at the top).
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
If you wish to install the inverter on the outer walls of a cattle shed, it is important to maintain a minimum clearance of 6 ft. 7 in. (2 m) between all sides of the inverter and air vents and other openings. The place of installation should not be exposed to ammonia, corrosive gases, salts, or acids.

1. Installation location and position

1. Preparation

1. Preparation
2. Attaching the Mounting Bracket

1. Preparation
2. Attaching the Mounting Bracket

Important! Depending on the surface, different mounting materials may be required for installing the mounting bracket. These mounting materials are not part of the scope of delivery for the inverter. The installer is responsible for selecting the proper mounting materials.

1. Preparation
2. Attaching the Mounting Bracket

For the installation of the inverter we recommend steel or aluminum screws with a diameter of 0.2–0.3 in. (6–8 mm).

1. Preparation
2. Attaching the Mounting Bracket

1

2

1. Preparation
2. Attaching the Mounting Bracket

1

2

3

1. Preparation
2. Attaching the Mounting Bracket

1

1. Preparation
2. Attaching the Mounting Bracket

When attaching the wall bracket to the wall or to a column, make sure that the wall bracket is not warped or deformed.

1. Preparation
2. Attaching the Mounting Bracket

The mounting bracket must be secured in at least four places.

1

1. Preparation
2. Attaching the Mounting Bracket

Example of a mast mounting kit

For installation of the inverter on a mast or beam, Fronius recommends using the "Pole clamp" (order no. SZ 2584.000) mast mounting kit from Rittal GmbH.
With the kit, the inverter can be mounted on a round or rectangular mast with the following diameter: Æ from 40 to 190 mm (round mast)
ÿ from 50 to 150 mm (rectangular mast)

1. Preparation

1. Preparation
2. Notes on the Knockouts

1. Preparation
2. Notes on the Knockouts

The wall bracket contains several knockouts of different sizes. When knocked out, the openings are used for feeding in the various cables:

IMPORTANT! The knockouts on the rear of the wall bracket are made of metal.

1. Preparation
2. Notes on the Knockouts

IMPORTANT! The side knockouts and the knockouts on the underside of the wall bracket may be knocked out using a hammer or screwdriver, or drilled out using a step drill.
The knockouts at the back may only be drilled out using a step drill.

	Use suitable eye protection when knocking/drilling out the knockouts.
	Only knock out knockouts using a hammer or screwdriver from the inside outwards.
	Only use suitable step drills to drill out the knockouts. Do not use spiral drills for drilling out!
	Only drill out knockouts using a step drill from the outside inwards.
	When drilling out using a step drill, ensure that the DC disconnector and the AC/DC connection block are not damaged.
	When drilling out the knockouts at the back, place the mounting bracket on an even surface with the back upwards so that shavings and pieces of metal can fall out of the mounting bracket.
	Attach appropriate conduits to all knocked/drilled out knockouts. In the event of installation outside, only use watertight conduits and conduit fittings. Conduits and conduit fittings are not included with the inverter.

Inverters can be operated on the following grids:

• 208 V Delta - Corner Grounded, without neutral conductor
• 208 V Delta: 120 V WYE, with neutral conductor
• 220 V Delta - Corner Grounded, without neutral conductor
• 220 V Delta: 127 V WYE, with neutral conductor
• 240 V Delta - Corner Grounded, without neutral conductor
• 240 V: 120 V WYE, with neutral conductor
• 240 V: 120 V split phase, with neutral conductor
  
• 50 Hz (220 V Delta - Corner Grounded, 50 Hz, without neutral conductor)
• 50 HN (220 V Delta: 127 V WYE, 50 Hz, with neutral conductor)

1. AC~

Inverters can be operated on the following grids:

• 208 V Delta - Corner Grounded, without neutral conductor
• 208 V Delta: 120 V WYE, with neutral conductor
• 220 V Delta - Corner Grounded, without neutral conductor
• 220 V Delta: 127 V WYE, with neutral conductor
• 240 V Delta - Corner Grounded, without neutral conductor
• 240 V: 120 V WYE, with neutral conductor
• 240 V: 120 V split phase, with neutral conductor
  
• 50 Hz (220 V Delta - Corner Grounded, 50 Hz, without neutral conductor)
• 50 HN (220 V Delta: 127 V WYE, 50 Hz, with neutral conductor)

1. AC~
2. Suitable Grids

Inverters can be operated on the following grids:

• 208 V Delta - Corner Grounded, without neutral conductor
• 208 V Delta: 120 V WYE, with neutral conductor
• 220 V Delta - Corner Grounded, without neutral conductor
• 220 V Delta: 127 V WYE, with neutral conductor
• 240 V Delta - Corner Grounded, without neutral conductor
• 240 V: 120 V WYE, with neutral conductor
• 240 V: 120 V split phase, with neutral conductor
  
• 50 Hz (220 V Delta - Corner Grounded, 50 Hz, without neutral conductor)
• 50 HN (220 V Delta: 127 V WYE, 50 Hz, with neutral conductor)

1. AC~

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

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

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

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

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

The AC-side terminals are designed for connecting single-wire, round aluminum cables. Due to the reaction of aluminum with air that creates a tough, non-conductive oxide layer the following points must be considered when connecting aluminum cables:

• Reduced rated currents for aluminum cables
• The connection requirements listed below

Always follow the instructions of the cable manufacturer when using aluminum cables.

Take into account local specifications when configuring cable cross sections.

Connection Requirements:

IMPORTANT! Do not use brushes, files, or sandpaper; aluminum particles may get stuck and can transfer to other cables.

IMPORTANT!Repeat the steps above whenever the cable is disconnected and then reconnected.

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

The resistance in the leads to the AC-side connection terminals must be as low as possible for optimal functioning of grid monitoring.

1. AC~

IMPORTANT! The ground conductor GND of the AC cable must be laid so that it is disconnected last.
Measure the ground conductor GND longer, for example, and loop.

Example: Fronius Primo 3.8–8.2

If AC cables are laid over the shaft of the DC main switch or across the DC main switch connection block, the cables may be damaged when the inverter is pivoted or the inverter may not be able to be pivoted.

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

Example: AC cables (Fronius Primo 3.8–8.2)

If excessively long AC or DC cables are laid in loops in the connection area, fix the cables to the designated eyelets at the top and bottom of the connection block using cable ties.

1. AC~
2. Notes on grid connection

IMPORTANT! The ground conductor GND of the AC cable must be laid so that it is disconnected last.
Measure the ground conductor GND longer, for example, and loop.

Example: Fronius Primo 3.8–8.2

If AC cables are laid over the shaft of the DC main switch or across the DC main switch connection block, the cables may be damaged when the inverter is pivoted or the inverter may not be able to be pivoted.

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

Example: AC cables (Fronius Primo 3.8–8.2)

If excessively long AC or DC cables are laid in loops in the connection area, fix the cables to the designated eyelets at the top and bottom of the connection block using cable ties.

1. AC~
2. Notes on grid connection

Fronius 3.8–8.2

Fronius 10.0–15.0

1. AC~
2. Notes on grid connection

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 fire personnel. Contact your local authorities for additional information.

1. DC=

1. DC=
2. Notes on DC Connection

1. DC=
2. Notes on DC Connection

In order to select suitable solar modules and get the most efficient use out of the inverter, please note the following points:

• The open circuit voltage of the solar modules increases as the temperature decreases (assuming constant irradiance).
• Note the temperature coefficients in the solar module data sheet.
• More exact data for sizing the solar modules can be obtained using calculation tools such as the Fronius Configuration Tool (available at http://www.solarweb.com).
• See NEC table 690.7 for the appropriate code-related voltage adjustment factor for crystalline silicon modules, or use the manufacturer’s specified voltage coefficient.

1. DC=
2. Notes on DC Connection

Only valid for the device types with the "Ecofuse" option:

The use of string fuses provides additional fuse protection for solar modules.
The maximum short circuit current I_SC, the maximum module backfeed current I_R, and the specification of the maximum string fuse value in the module data sheet of the respective solar module are decisive factors in the protection of the solar module.

The maximum short circuit current I_SC per terminal is 15 A.

The string fuse release current can be set to greater than 15 A if required. However, a release current of 20 A must not be exceeded.

If the inverter is being operated with an external string collection box, the DC connector kit 25 (item numbers 42,0201,4479 for DC+ and 42,0201,4480 for DC-) must be used. In this case the solar modules are externally protected in the string collection box and the metal bolts should be used in the inverter.

National regulations regarding fuse protection must be observed. The electrical engineer carrying out the installation is responsible for the correct choice of string fuses.

The inverter is delivered with metal bolts as standard.

1. DC=
2. Notes on DC Connection

The inverter is designed exclusively to be connected and used with nongrounded solar modules.
The solar modules cannot be grounded at either the positive or negative pole.

IMPORTANT! Check the polarity and voltage of the solar module strings.

If DC cables are laid over the shaft of the DC main switch, or across the DC main switch connection block, they could be damaged when the inverter swivels in, or the inverter could be prevented from swiveling in.

IMPORTANT! Do not lay the DC cable over the DC main switch or across the DC main switch connection block.

1. DC=
2. Notes on DC Connection

Multi MPP Tracker inverters have two independent DC inputs (MPP Tracker). These inputs can be connected to a number of different modules.
Each MPP Tracker has 2 DC+ terminals. There are a total of four DC- terminals.

Connecting 2–4 strings in Multi MPP Tracker mode:

Connecting two solar module fields to a Multi MPP Tracker inverter

Connect the strings separately to the two MPP Tracker inputs (DC+1/DC+2). The DC- terminals can be used as desired, since they are connected internally.
Set MPP TRACKER 2 to "ON" when starting for the first time (also possible in the basic menu subsequently).

Single MPP Tracker mode on a Multi MPP Tracker inverter:

Connecting multiple combined solar module fields to a line on a Multi MPP Tracker inverter

If the strings are connected with a string collection box and only one collective line is used for connection to the inverter, connection DC+1 (pin 2) and DC+2 (pin 1) must be bridged.
The cable cross section of the DC connecting line and bridging must be the same. Bridging the DC terminal is not necessary because it is bridged internally.

Set MPP TRACKER 2 to "OFF" when starting for the first time (also possible in the basic menu subsequently).

If the Multi MPP Tracker inverter is operated in Single MPP Tracker mode, the currents of the connected DC lines are distributed evenly across both inputs.

Single MPP Tracker mode with just one string on a Multi MPP Tracker inverter:

Connecting just one string to a Multi MPP Tracker inverter

If only one string is used for connection to the inverter, connection DC+1 (pin 2) and DC+2 (pin 1) must be bridged.
The cable cross section of the DC connecting line and bridging must be the same. Bridging the DC terminal is not necessary because it is bridged internally.

Set MPP TRACKER 2 to "OFF" when starting for the first time (also possible in the basic menu subsequently).

If the Multi MPP Tracker inverter is operated in Single MPP Tracker mode, the currents of the connected DC lines are distributed evenly across both inputs.

1. DC=
2. Notes on DC Connection

Multi MPP Tracker inverters have 2 independent DC inputs (MPP Tracker). These inputs can be connected to a number of different modules.
MPP Tracker 1 has 4 DC+ terminals.
MPP Tracker 2 has 2 DC+ terminals.
There are a total of 6 DC- terminals.

Connecting 2-6 strings in Multi MPP Tracker mode:

Connecting two solar module fields to a Multi MPP Tracker inverter

Connect the strings separately to the two MPP Tracker inputs (DC+1/DC+2). The DC- terminals can be used as desired, since they are connected internally.
Set MPP TRACKER 2 to "ON" when starting for the first time (also possible in the basic menu subsequently).

IMPORTANT! The inverter must not be operated with one option card and 2 knocked-out option card slots.
In this case Fronius provides an appropriate dummy cover as an accessory:
42,0405,2020 ... for Fronius Primo 3.8–8.2
42,0405,2094 ... for Fronius Primo 10.0–15.0

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

• Provide separate conduits for data communication cables
• Lay data communication cables in the supplied protective hose
• Knock out the appropriate opening
• Cleanly deburr the knocked-out opening
  
• Fronius Primo 3.9–8.2 only:
  Insert the supplied cable gland into the opening (if both openings are knocked out, an additional cable gland 42,0405,2019 is required)
  
• Clip the inverter onto the wall bracket
• Guide the data communication cables through the cable glands from behind
• When pivoting the inverter, ensure that the cables are not trapped, kinked, or damaged in any other way. Do not loop the data communication cables.
• Lay the data communication cables in the data communication area of the inverter and connect to the Solar Net "IN" and "OUT" connections.
  Plug the termination plugs into the remaining Solar Net connections.

1. Notes on Laying Data Communication Cables

IMPORTANT! The inverter must not be operated with one option card and 2 knocked-out option card slots.
In this case Fronius provides an appropriate dummy cover as an accessory:
42,0405,2020 ... for Fronius Primo 3.8–8.2
42,0405,2094 ... for Fronius Primo 10.0–15.0

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

• Provide separate conduits for data communication cables
• Lay data communication cables in the supplied protective hose
• Knock out the appropriate opening
• Cleanly deburr the knocked-out opening
  
• Fronius Primo 3.9–8.2 only:
  Insert the supplied cable gland into the opening (if both openings are knocked out, an additional cable gland 42,0405,2019 is required)
  
• Clip the inverter onto the wall bracket
• Guide the data communication cables through the cable glands from behind
• When pivoting the inverter, ensure that the cables are not trapped, kinked, or damaged in any other way. Do not loop the data communication cables.
• Lay the data communication cables in the data communication area of the inverter and connect to the Solar Net "IN" and "OUT" connections.
  Plug the termination plugs into the remaining Solar Net connections.

The side areas of the housing cover are designed to function as carrying grips and/or handles.

NOTE!

The inverter is fitted with a lock for safety reasons, which allows the inverter to be pivoted in the wall bracket only when the DC main switch is off.

 

Only clip on and pivot the inverter in the wall bracket when the DC main switch is off.

Do not use excessive force to clip on the inverter and pivot it.

The fixing screws in the data communication area of the inverter are used to fix the inverter to the wall bracket. Fixing screws must be properly tightened to ensure correct contact between the inverter and the wall bracket.

1. Notes on Clipping the Inverter into the Wall Bracket

The side areas of the housing cover are designed to function as carrying grips and/or handles.

NOTE!

The inverter is fitted with a lock for safety reasons, which allows the inverter to be pivoted in the wall bracket only when the DC main switch is off.

 

Only clip on and pivot the inverter in the wall bracket when the DC main switch is off.

Do not use excessive force to clip on the inverter and pivot it.

The fixing screws in the data communication area of the inverter are used to fix the inverter to the wall bracket. Fixing screws must be properly tightened to ensure correct contact between the inverter and the wall bracket.

Fronius Primo 3.8–8.2 only

An optional anti-theft device is included in the scope of delivery.
If required, the anti-theft device is installed before the inverter is screwed to the wall bracket.

To ensure that the fixing screws cannot fall out in the inverter's data communications area, these are fitted with a screw release.
To remove the fixing screw from the inverter

• Push the fixing screw upwards from the other side e.g. using needle-nose pliers
• Undo the fixing screw

Mounting the Anti-Theft Device

IMPORTANT! Please refer to the instructions for attaching the inverter to the wall bracket.

1Swing the inverter out

2Push the fixing screw upwards from the other side e.g. using needle-nose pliers

3Undo the fixing screw

4Insert the fixing screw into the anti-theft device

5Insert the anti-theft device plus fixing screw into the inverter

6Swing the inverter in

7Tighten both fixing screws to the specified torque

8Fit the padlock to the anti-theft device

1. Notes on Anti-theft device

Fronius Primo 3.8–8.2 only

An optional anti-theft device is included in the scope of delivery.
If required, the anti-theft device is installed before the inverter is screwed to the wall bracket.

To ensure that the fixing screws cannot fall out in the inverter's data communications area, these are fitted with a screw release.
To remove the fixing screw from the inverter

• Push the fixing screw upwards from the other side e.g. using needle-nose pliers
• Undo the fixing screw

Mounting the Anti-Theft Device

IMPORTANT! Please refer to the instructions for attaching the inverter to the wall bracket.

1Swing the inverter out

2Push the fixing screw upwards from the other side e.g. using needle-nose pliers

3Undo the fixing screw

4Insert the fixing screw into the anti-theft device

5Insert the anti-theft device plus fixing screw into the inverter

6Swing the inverter in

7Tighten both fixing screws to the specified torque

8Fit the padlock to the anti-theft device

1. Notes on Software Updates

1Insert the USB stick in the inverter data communication area

2Access the Setup menu

3Select the "USB" menu item

4Select "Update Software"

5Install the update

A USB flash drive connected to the USB A socket can act as a data logger for an inverter.

The logging data that is saved on the USB flash drive can be viewed directly in third-party applications (e.g., Microsoft® Excel) at any time via the included CSV file.

Older Excel versions (up to Excel 2007) have a row limit of 65536.

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

A USB flash drive connected to the USB A socket can act as a data logger for an inverter.

The logging data that is saved on the USB flash drive can be viewed directly in third-party applications (e.g., Microsoft® Excel) at any time via the included CSV file.

Older Excel versions (up to Excel 2007) have a row limit of 65536.

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

If the USB stick is used as a datalogger, three files are automatically created:

• FRONIUS.sys system file:
  This file saves information from the inverter that is irrelevant to the customer. The file must not be deleted individually. Only delete all files together (sys, fld, csv).
  
• DALO.fld log file:
  Log file for reading out data in Fronius Solar.access.
  
  You can find additional information on the Fronius Solar.access Software in the "DATCOM Detail" operating instructions at http://www.fronius.com
  
• DATA.csv log file:
  A log file for reading out data in a spreadsheet program (e.g., Microsoft® Excel)

Data structure on the USB stick

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

If multiple inverters exist with the same inverter number, the three files are saved in the same folder. A number is appended to the file name (e.g., DALO_02.fld)

Structure of the CSV file:

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

One USB thumb drive with a memory capacity of 1 GB, for example, can record logging data at a logging interval of 5 minutes for approx. 7 years.

CSV file
CSV files can store only 65,535 rows (data records) (up to Microsoft® Excel version 2007, afterwards there is no limit).
At a logging interval of 5 minutes, the 65,535 rows are written within approx. 7 months (CSV data size of approx. 8 MB).
To avoid a loss of data, the CSV file should be backed up to a PC within these 7 months and deleted from the USB thumb drive. If the logging interval is set longer, this time frame is extended accordingly.

FLD file
The FLD file should not be larger than 16 MB. At a logging interval of 5 minutes, this corresponds to a storage duration of approx. 6 years.
If the file exceeds this 16 MB limit, it should be backed up to a PC, and all data should be deleted from the USB thumb drive.

After you have backed up the data and removed it from the USB thumb drive, the thumb drive should be immediately reinserted so that it can record logging data; no further steps are required.

Notice! A full USB thumb drive can lead to loss of data or overwriting of data. When inserting the USB thumb drive, make sure that it has a sufficient memory capacity.

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

If the USB flash drive is removed (e.g., to back up data), the logging data is written to a buffer memory in the inverter.
As soon as the USB flash drive is reinserted, the data is automatically transferred from the buffer memory to the USB flash drive.

The buffer memory can store a maximum of 6 logging points. Data is logged only during inverter operation (power greater than 0 W). The logging interval is set to 30 minutes. This results in a time span of 3 hours for recording data in the buffer memory.

When the buffer memory is full, the oldest data in the buffer memory is written over with the new data.

IMPORTANT! The buffer memory requires a constant power supply.
If there is an AC power outage during operation, all data in the buffer memory is lost. The automatic night switch-off must be deactivated so that data is not lost at night (set “Night Mode” setup parameter to ON – see the Operating Instructions for Datamanager 2.0 and the sections “Setting and Displaying Menu Items,” “Displaying and Setting Parameters in the ‘DATcom’ Menu Item”).
For Fronius Eco or Fronius Symo 15.0-3 208, the buffer memory also works with pure DC voltage.

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

Due to the number of USB thumb drives on the market, we cannot guarantee that every USB thumb drive will be recognized by the inverter.

Fronius recommends using only certified, industrial USB thumb drives (look for the USB-IF logo).

The inverter supports USB thumb drives using the following file systems:

• FAT12
• FAT16
• FAT32

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

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

When the inverter recognizes a USB thumb drive, the USB symbol will appear at the top right of the display.

When inserting the USB thumb drive, make sure that the USB symbol is displayed (it may also be flashing).

Notice! Please be aware that in outdoor applications the USB thumb drive may only function in a limited temperature range.
Make sure, for example, that the USB thumb drive will also function at low temperatures for outdoor applications.

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

The USB stick can be used to help end customers update inverter software via the USB menu item in the SETUP menu item: the update file is first saved on the USB stick and then transferred to the inverter. The update file must be saved in the USB stick root directory.

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

Safety information for removing a USB stick
		IMPORTANT! To prevent a loss of data, the connected USB stick should only be removed under the following conditions: via the SETUP and "Safely remove USB / hardware" menu items when the "Data Transfer" LED is no longer flashing or illuminated.

Notice! For a horizontal installation position and installation outside: perform an annual check to ensure that all screw connections are tightly fastened.

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

1. Notes on Maintenance

Notice! For a horizontal installation position and installation outside: perform an annual check to ensure that all screw connections are tightly fastened.

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

1. Notes on Maintenance

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

1. Serial Number Sticker for Customer Use

The inverter's serial number can be found on the rating plate on the bottom of the inverter.
The installation position may make it difficult to access or read the serial number, e.g. if the inverter has been installed in a dark or shaded area.

Two serial number stickers are enclosed with the Installation Instructions for the inverter:

*	57 x 20 mm
**	67 x 20 mm

The customer can attach these stickers themselves in a clearly visible place, e.g. on the front of the inverter or on the Operating Instructions.

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

Australia only:
Affix DRM Australia sticker in Datamanager area.