Fronius Symo 3, Fronius Eco Installation Instructions Manual

/ Perfect Charging / Perfect Welding / Solar Energy

42,0426,0172,EN 009-21032016

Fronius Symo 3 - 8,2 kW
Fronius Eco

Installations instructions

Grid-connected inverter

EN

2

3

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Contents

Installation location and position ................................................................................................................ 5

Explanation of safety symbols .............................................................................................................. 5

Reliability............................................................................................................................................... 5

Proper use ............................................................................................................................................ 6

Inverter installation location .................................................................................................................. 7

Explanation of symbols - installation position ....................................................................................... 8

General comments regarding inverter installation location................................................................... 9

Attaching the Wall Bracket......................................................................................................................... 10

Safety.................................................................................................................................................... 10

Selecting wall plugs and screws ........................................................................................................... 10

Recommended screws ......................................................................................................................... 10

Opening the inverter ............................................................................................................................. 10

Fixing the wall bracket to a wall ............................................................................................................ 11

Fitting the wall bracket to a mast or support ......................................................................................... 12

Fitting the wall bracket to metal supports.............................................................................................. 12

Do not warp or deform the wall bracket ................................................................................................ 12

Connecting the inverter to the public grid (AC) .......................................................................................... 13

Safety.................................................................................................................................................... 13

Monitoring the Grid ............................................................................................................................... 13

Type of AC cable .................................................................................................................................. 13

Connecting aluminum cables................................................................................................................ 13

AC terminals ......................................................................................................................................... 14

Cross-section of the AC cable .............................................................................................................. 14

Connecting the inverter to the public grid (AC)..................................................................................... 14

Maximum fuse rating on alternating current side.................................................................................. 16

Notes regarding inverters with single and multiple MPP trackers.............................................................. 17

Inverter with single MPP tracker ........................................................................................................... 17

Inverter with multiple MPP trackers ...................................................................................................... 17

Connecting solar module strings to the inverter (DC) ................................................................................ 19

Safety.................................................................................................................................................... 19

General comments regarding solar modules........................................................................................19

DC terminals ......................................................................................................................................... 20

Connecting aluminum cables................................................................................................................ 20

Connecting solar module strings to the inverter (DC)........................................................................... 21

Data communication .................................................................................................................................. 24

Routing data communication cables..................................................................................................... 24

Clipping the Inverter onto the Wall Bracket................................................................................................ 26

Attaching the inverter to the wall bracket.............................................................................................. 26

Starting for the first time............................................................................................................................. 28

Starting the inverter for the first time..................................................................................................... 28

Notes regarding software updates ............................................................................................................. 30

Notes regarding software updates........................................................................................................ 30

USB Stick as a Data Logger and for Updating Inverter Software .............................................................. 31

USB stick as a data logger.................................................................................................................... 31

Data on the USB stick........................................................................................................................... 31

Data volume and storage capacity........................................................................................................ 32

Buffer memory ...................................................................................................................................... 32

Suitable USB flash drives ..................................................................................................................... 33

USB stick for updating the inverter software......................................................................................... 33

Remove USB stick................................................................................................................................ 34

Notes regarding maintenance.................................................................................................................... 35

Maintenance ......................................................................................................................................... 35

Cleaning................................................................................................................................................ 35

Serial Number Sticker for Customer Use................................................................................................... 36

Serial number sticker for customer use ................................................................................................ 36

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Installation location and position

Explanation of
safety symbols

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

Reliability

DANGER! Indicates immediate and real danger. If it is not avoided, death or se-

rious injury will result.

WARNING! Indicates a potentially dangerous situation. Death or serious injury
may result if appropriate precautions are not taken.

CAUTION! Indicates a situation where damage or injury could occur. If it is not
avoided, minor injury and/or damage to property may result.

NOTE! Indicates a risk of flawed results and possible damage to the equipment.

IMPORTANT! Indicates tips for correct operation and other particularly useful information.

It does not indicate a potentially damaging or dangerous situation.

WARNING! Incorrect operation or poorly executed work can cause serious injury
or damage. Commissioning of the hybrid system may only be carried out by
trained personnel in accordance with the technical regulations. Read the installa­tion and operating instructions before installing and commissioning the equip­ment.

WARNING! Shoddy workmanship can cause serious injury and material dam­age. Overvoltage protection must only ever be installed and connected by a qual­ified electrical engineer.
Follow the safety rules!
Make sure that both the AC side and the DC side of the inverter are de-energised
before carrying out any installation or connection work.

Fire prevention

CAUTION! Risk of damage to inverters and other live photovoltaic system com-

ponents due to poor or unprofessional installation.
Poor or unprofessional installation can cause overheating of cables and terminal
connections and result in arcs. These can cause heat damage, which in turn may
lead to fires.

Observe the following when connecting AC and DC cables:

- Tighten all terminals to the torque specified in the operating instructions

6

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 operating instructions / installation instructions for the tightening tor­ques to be used at the relevant terminal connections.

Proper use The solar inverter is intended exclusively to convert direct current from solar modules into

alternating current and to feed this into the public grid.
Utilisation not in accordance with the intended purpose comprises:

- utilisation for any other purpose or in any other manner

- making any modifications to the inverter that have not been expressly approved by
Fronius

- the installation of parts 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.

Proper use includes:

- carefully reading and obeying all the instructions and all the safety and danger notices
in the operating instructions

- performing all stipulated inspection and maintenance work

- installation as specified in the operating instructions

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

Observe all the measures recommended by the solar module manufacturer to ensure the
lasting maintenance of the properties of the solar module.

Obey the regulations of the energy supply company regarding feeding energy into the grid.

- Tighten all grounding terminals (PE /
GND), including free ones, to the torque
specified in the operating instructions

- Do not overload cables

- Check cables for damage and verify that
they are laid correctly

- Take note of the safety instructions, op­erating instructions and any local con­nection regulations

Using fastening screws, always screw the in­verter firmly to the wall bracket to the torque
specified in the operating instructions.
Ensure that the fastening screws are tight be­fore starting the inverter!

NOTE! Fronius will not accept any costs associated with production downtimes,
installer costs, etc., that may arise as the result of a detected arc and its conse­quences.
Fronius accepts no liability for fires that can occur despite the presence of the in­tegrated arc detection/extinguishing system (e.g. fires caused by a parallel arc).

NOTE! After an arc has been detected, the entire photovoltaic system must be
checked for possible damage before resetting the inverter.

3

2

2.5 Nm

1

7

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Inverter installa­tion location

The inverter is suitable for installation indoors.

The inverter is suitable for installation outdoors.

Its IP 65 degree of protection means that 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.

U

DCmax

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.)

As the inverter generates low levels of noise under certain operating con­ditions, it should not be installed close to living areas.

Do not install the inverter in:

- places where there is an increased risk of damage from farm ani-

mals (horses, cattle, sheep, pigs, etc.)

- stables or adjoining areas

- storage areas for hay, straw, chaff, animal feed, fertilisers, etc.
All inverters are design 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. It is therefore not recommended to mount the device in rooms or
areas in which a strong formation of dust is expected.

Do not install the inverter in:

- greenhouses

- storage or processing areas for fruit, vegetables or winegrowing

products

- places used to prepare grain, green fodder or animal feeds

IP 65

2000 m

2000 m

2500 m

UDCmax =
1000 V

U

DCmax =

900 V

3000 m

2500 m

3000 m

3400 m

UDCmax =
815 V

U

DCmax =

750 V

> 3400 m

NH

3

8

Explanation of
symbols - instal­lation position

The inverter is designed to be installed vertically on a vertical wall or pil­lar.

The inverter is suitable for horizontal installation.

The inverter is suitable for installation on a sloping surface.

Do not install the inverter on a sloping surface with its connection sockets
facing upwards.

Do not install the inverter at an angle on a vertical wall or pillar.

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 such that it overhangs with its connection sock­ets facing upwards.

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General com­ments regarding
inverter installa­tion location

The following criteria should be taken into account when choosing a location for the invert­er:

Do not install the inverter such that it overhangs with its connection sock­ets facing downwards.

Do not install the inverter on the ceiling.

Install only on a solid 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).

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 all­round 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.

200 mm

100 mm

150 mm

-25 °C - +60 °C

0 - 100 %

10

Attaching the Wall Bracket

Safety

Selecting wall
plugs and screws

Recommended
screws

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

Opening the in­verter

1 2

WARNING! An electric shock can be fatal. Danger due to residual voltage in ca­pacitors. Wait for the capacitors to discharge. The discharge time is five minutes.

CAUTION! Risk of damage to the inverter from dirt or water on the terminals and
contacts of the connection area.

- When drilling, ensure that terminals and contacts in the connection area do
not become dirty or wet.

- Without a power stage set, the wall bracket does not conform to the protec­tion class of the inverter as a whole and so must not be installed without the
power stage set.
The wall bracket should be protected from dirt and moisture during installa­tion.

NOTE! Degree of protection IP 65 is only applicable if

- the inverter is permanently attached to the wall bracket with screws

- the cover for the data communication area is permanently attached to the in­verter with screws.

Degree of protection IP 20 applies to the wall bracket with no inverter.

IMPORTANT! Different fixings may be required to fit the wall 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.

WARNING! An inadequate ground conductor connection can cause serious inju­ry or damage. The housing screws provide a suitable ground conductor connec­tion for grounding the housing and must NOT be replaced by any other screws
that do not provide a reliable ground conductor connection.

1

2

11

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3 4

Fixing the wall
bracket to a wall

1

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

2

3

4

3 4

1

2

3

NOTE! When mounting the wall
bracket on the wall, ensure that
the wall bracket is not warped or
deformed.

12

Fitting the wall
bracket to a mast
or support

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: from 40 to 190 mm
(round mast),  from 50 to 150 mm (rectan­gular mast)

Fitting the wall
bracket to metal
supports

The wall bracket must be fastened at a minimum of four points.

1

Do not warp or
deform the wall
bracket

1

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

13

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Connecting the inverter to the public grid (AC)

Safety

Monitoring the
Grid

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

Connecting alu­minum cables

The AC-side terminals are designed for connecting single-wire, round, aluminum cables.
The following points must be taken into account when connecting aluminum cables due to
the non-conducting oxide layer of aluminum:

- Reduced rated currents for aluminum cables

- The connection requirements listed below

Connection Requirements:

Carefully clean off the oxide layer of the stripped end of the cable, e.g., using a knife.

IMPORTANTDo not use brushes, files or sandpaper. Aluminum particles may get stuck
and can transfer to other cables.

After removing the oxide layer of the cable end, rub in a neutral grease, e.g., acid- and
alkali-free Vaseline.

Then immediately connect it to the terminal.

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

WARNING! Incorrect operation or poorly executed work can cause serious injury
or damage. Commissioning of the inverter may only be carried out by trained per­sonnel in accordance with the technical regulations. Read the installation and op­erating instructions before installing and commissioning the equipment.

WARNING! An electric shock can be fatal. Danger due to grid voltage and DC
voltage from solar modules that are exposed to light.

- Ensure that both the AC side and the DC side of the inverter are de-ener­gised before carrying out any connection work.

- Only an authorised electrical engineer is permitted to connect this equipment
to the public grid.

CAUTION! Risk of damage to the inverter as a result of incorrectly tightened ter­minals. Incorrectly tightened terminals can cause heat damage to the inverter
and, in turn, lead to a fire. When connecting AC and DC cables, ensure that all
the terminals are tightened to the specified torque.

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

- copper or aluminium: round, single wire

- Copper: round, finely stranded up to conductor category 4

Cu / Al Cu

NOTE! Take into account local specifications when configuring cable cross sec­tions.

1

2

3

14

AC terminals

PE Ground conductor / grounding
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.

Cross-section of
the AC cable

When using a standard M32 metric screw joint with reducer:
cable diameter 7 - 15 mm

When using an M32 metric screw joint (reducer removed):
cable diameter 11 - 21 mm
(with a cable diameter of 11 mm the strain-relief force is reduced from 100 N to a maximum
of 80 N)

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 M32x15
KB 18-25.

Connecting the
inverter to the
public grid (AC)

IMPORTANT! The PE ground conductor of the AC cable must be laid in such a way that it

is the last to be disconnected in the event that the strain-relief device should fail.
This can be ensured, for example, by making it somewhat longer and by laying it in a loop.

AC

PEPEPE

PE

N

M32

L1

L1

L3L3L2

L2

NOTE! Form loops with the AC cables when connecting them to the AC termi­nals!
When securing the AC cables using a metric screw joint, ensure that the loops do
not protrude beyond the connection area. Under certain circumstances it may oth­erwise no longer be possible to close the inverter.

NOTE!

- Ensure that the grid neutral conductor is grounded. In the case of IT networks
(insulated networks with no grounding) this may not be the case; it will then
not be possible to use the inverter.

- In order to use the inverter, the neutral conductor must be connected.
A neutral conductor that is too small may adversely affect the grid power feed
operation of the inverter. The neutral conductor must therefore be the same
size as the other live conductors.

15

EN

1 2

3

If AC 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 AC cables over the shaft of the DC main switch or across the con­nection block of the DC main switch!

> 200 mm

15 mm

AC
~

PE

> 250 mm

PE

PE

Cu / Al Cu

max. Class 4

1

OFF

1

2

3

16

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.

Maximum fuse
rating on alternat­ing current side

Inverters Phases AC power Maximum

fuse rating

Recommend-

ed fuse rating

Fronius Symo 3.0-3-S / -M 3 3000 W C 25 A C 10 A
Fronius Symo 3.7-3-S / -M 3 3700 W C 25 A C 13 A
Fronius Symo 4.5-3-S / -M 3 4500 W C 25 A C 16 A
Fronius Symo 5.0-3-M 3 5000 W C 25 A C 16 A
Fronius Symo 6.0-3-M 3 6000 W C 25 A C 16 A
Fronius Symo 7.0-3-M 3 7000 W C 25 A C 20 A
Fronius Symo 8.2-3-M 3 8200 W C 25 A C 25 A

NOTE! Local regulations, the energy supply company or other factors may re­quire an earth-leakage circuit breaker in the grid line. For this situation, a type A
earth-leakage circuit breaker with a tripping current of at least 100 mA is generally
adequate. In particular cases, and depending on local factors, however, the type
A earth-leakage circuit breaker may trip at the wrong time. For this reason, Froni­us recommends that an earth-leakage circuit breaker that is suitable for frequency
converters should be used.

max. C 25 A

AC ~

RCD

National Standards

?

Type A

YES

IΔN ≥ 100 mA

§

17

EN

Notes regarding inverters with single and multiple
MPP trackers

Inverter with sin­gle MPP tracker

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
three 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 two strings) or twice the reverse current
(for three 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.

Inverter with 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 two 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)

1

DC+

DC-1

DC+1

DC-

2

123

3

PV 1

Fronius Symo

3.0-3-S / 3.7-3-S / 4.5-3-S

1

DC+1

DC-1

PV 1PV 1

PV 2

DC+1

DC-2

DC+2

DC+2

DC-

1

1234

22

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

18

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 DC leads connected are
divided evenly across both inputs.

1

DC+1

DC-1

DC+1

DC+2

DC-

1

1234

22

PV 1

PV 2

D1

D1

=

*

*

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

19

EN

Connecting solar module strings to the inverter (DC)

Safety

General com­ments regarding
solar modules

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

- If insolation is constant and the temperature is falling, the open circuit voltage of the
solar modules will increase. The open circuit voltage must not exceed 1000 V. If the
open circuit voltage exceeds the specified values, the inverter will be destroyed and
no warranty claims will be entertained.

- The temperature coefficients on the solar modules data sheet must be observed

- More exact values for dimensioning the solar modules can be provided by suitable cal­culation programs, like the Fronius Solar.configurator (which can be downloaded from
www.fronius.com).

WARNING! Incorrect operation or poorly executed work can cause serious injury
or damage. Commissioning of the inverter may only be carried out by trained per­sonnel in accordance with the technical regulations. Read the installation and op­erating instructions before installing and commissioning the equipment.

WARNING! An electric shock can be fatal. Danger due to grid voltage and DC
voltage from solar modules that are exposed to light.

- Ensure that both the AC side and the DC side of the inverter are de-ener­gised before carrying out any connection work.

- Only an authorised electrical engineer is permitted to connect this equipment
to the public grid.

WARNING! An electric shock can be fatal. Danger due to grid voltage and DC
voltage from solar modules.

- The DC main switch is only to be used to de-energise the power stage set.
The connection area is still live when the DC main switch is switched off.

- Ensure that the power stage set and connection area are disconnected from
one another before carrying out any maintenance or service tasks.

- The power stage set, which is enclosed in a separate housing, must only be
disconnected from the connection area when in a de-energized state.

- Maintenance and servicing in the power stage set of the inverter must only
be carried out by Fronius-trained service technicians.

CAUTION! Risk of damage to the inverter as a result of incorrectly tightened ter­minals. Incorrectly tightened terminals can cause heat damage to the inverter
and, in turn, lead to a fire. When connecting AC and DC cables, ensure that all
the terminals are tightened to the specified torque.

CAUTION! Risk of damage to inverter from overload.

- The maximum amperage when connecting to a single DC terminal is 33 A.

- Connect the DC+ and DC- cables to the DC+ and DC- terminals on the in­verter, taking care to ensure that the polarity is correct.

- Observe the maximum DC input voltage.

NOTE! The solar modules connected to the inverter must conform to the Class A
requirements of the IEC 61730 standard.

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

NOTE! Before you connect up the solar modules you should check that the volt­age specified by the manufacturer corresponds to the actual measured voltage.

20

DC terminals

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

Min. cross-section of each DC cable:

2.5 mm²

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

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.

Connecting alu­minum cables

The DC-side terminals are designed for connecting single-wire, round aluminum cables.
The following points must be taken into account when connecting aluminum cables due to
the non-conducting oxide layer of aluminum:

- Reduced rated currents for aluminum cables

- The connection requirements listed below

Connection Requirements:

Carefully clean off the oxide layer of the stripped end of the cable, e.g., using a knife.

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

After removing the oxide layer of the cable end, rub in a neutral grease, e.g., acid- and
alkali-free Vaseline.

Then immediately connect it to the terminal.

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

min. 2,5 mm² - max. 26 mm²
min. 1,5 Nm - max. 1,8 Nm

DC= (-)

DC= (+)

+

+

+

-

-

-

D1

D2

D1

D1

D1

D3

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

NOTE! Take into account local specifications when configuring cable cross sec­tions.

1

2

3

21

EN

Connecting solar
module strings to
the inverter (DC)

The difference between the individual solar module strings must not exceed 10 V.

1 2

3 4

900V
815V
750V

CAUTION! Risk of possible 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

NOTE! Only break out as many break points as there are cables.

1

2

1

2

1

DC+DC-

2

3

15 mm

D1

D2

D3

D1

D1

D1

4

22

5 6

7 8

9 10

5 6

PV1 PV1 PV2 PV2

PV PV PV

3.0-3-M

3.7-3-M

4.5-3-M

5.0-3-M

6.0-3-M

7.0-3-M

8.2-3-M

3.0-3-S

3.7-3-S

4.5-3-S

7 8

9

2

DC+DC-

2

1

1

DC=

10

23

EN

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.

24

Data communication

Routing data
communication
cables

IMPORTANT! Operating the inverter with an option card and two broken-out option card

divisions is not permitted.
To cater for this eventuality, a relevant blanking cover (42,0405,2020) is available from
Fronius as an option.

IMPORTANT! Note the following if data communication cables are being introduced into
the inverter:

- 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 cable.

- insert without fail the relevant blanking plugs into the free openings on the sealing in­sert.

1 2

3 4

1

3

1

6

7

2

4

5

2

5 - 12 Nm

3 4

25

EN

5 6

1

6

2

4

3

5

5 6

26

Clipping the Inverter onto the Wall Bracket

Attaching the in­verter to the wall
bracket

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

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

1 2

WARNING! An inadequate ground conductor connection can cause serious inju­ry or damage. The housing screws provide a suitable ground conductor connec­tion for grounding the housing and must NOT be replaced by any other screws
that do not provide a reliable ground conductor connection.

NOTE! For safety reasons, the inverter is fitted with a latch that prevents the in­verter from being swung into the wall bracket unless the DC main switch is
switched off.

- Never attach the inverter to the wall bracket or swing it in unless the DC main
switch is switched off,

- Never use force to attach the inverter or swing it in.

CAUTION! If the fastening screws are not tightened correctly, then the inverter is
at risk of being damaged.
Fastening screws that are not correctly tightened can result in arcs occurring
when the inverter is in operation, which in turn can cause fires. Always use the
specified torque when tightening the fastening screws.

1

2

27

EN

3 4

3 4

28

Starting for the first time

Starting the in­verter 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 is performed by switching the automatic circuit breaker off and then on again.

The country setup can only be set when starting the inverter for the first time. If it becomes
necessary to modify the country setup at a later date, please contact your Technical Sup­port team.

1

2 3

WARNING! Incorrect operation or poorly executed work can cause serious injury
or damage. Commissioning of the inverter may only be carried out by trained per­sonnel in accordance with the technical regulations. Read the installation and op­erating instructions before installing and commissioning the equipment.

AC

ON

2

I

0

3

1

1

2

1

2

2

inst.
EX
V0.0.03
0x0001

new
DE1
V0.0.08
0x0001

1

CONFIG

Country

*

3

* Country setups
50 Hz International 50 Hz GB Great Britain
60 Hz International 60 Hz GR Ελλάδα
AT1 Österreich: Anlagengröße < 3,68 kVA HU Magyarország
AT2 Österreich: Anlagengröße < 13,8 kVA IE Éire / Ireland; Malta
AT3 Österreich: Anlagengröße > 13,8 kVA IL ﺇﺱﺭﺍﺉﻱﻝ / ישראל / Israel
AU Australia IT2 Italia: Dimensioni impianto < 6 kVA (Multist-

ring)

BE Belgique / België IT3 Italia: Dimensioni impianto > 6 kVA (Multist-

ring)
BR2 Brasil: > 3,6 kVA MG50 Microgrid 50 Hz
BR3 Brasil: > 6 kVA (Multistring) MG60 Microgrid 60 Hz
CH Schweiz / Suisse / Svizzera / Svizra NL Nederland

29

EN

4 5

6 7

8 9

CY Cyprus PF1 Polynésie française
CZ Česko PT Portugal
DE1 Deutschland: Anlagengröße < 3,68 kVA RO România
DE2 Deutschland: Anlagengröße < 13,8 kVA SE Sverige
DE3 Deutschland: Anlagengröße > 13,8 kVA SI Slovenija
DK Danmark SK Slovensko
ES España TR Türkiye
ESOS Territorios españoles en el extranjero

(Spanish Overseas Islands)

ZA South Africa

FR France
FROS Territoire d’Outre-Mer (French Overseas Islands)

CONFIG

4

2

1

5

2

1

6

2

1

BASIC

MPP TRACKER 2

7

8 9

30

Notes regarding software updates

Notes regarding
software updates

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

Plug the USB stick into the data com­munication area of the inverter

Open the Setup menu
Select the "USB" menu item
Select "Software Update"
Update the software

USB

+

3

5

4

4

1

2

2

1

2

3

4

5

31

EN

USB Stick as a Data Logger and for Updating Invert­er Software

USB stick as a
data logger

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

Logging data saved to the USB stick can at any time

- be imported into the Fronius Solar.access software via the included FLD file,

- be viewed directly in third-party applications (e.g., Microsoft® Excel) via the included
CSV file.

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

Data on the USB
stick

If the USB stick 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 stick

(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:

USB_Drive (1)

(2)

01 (3)

02

FRONIUS.sys
DALO.fld
DATA.csv

FRONIUS.sys
DALO.fld
DATA.csv

GALVO / SYMO / PRIMO / ECO

(1) (2) (3) (4) (5) (6) (7)

32

(1) ID
(2) Inverter no.
(3) Inverter type (DATCOM code)
(4) Logging interval in seconds
(5) Energy in watts per second, relative to the logging interval
(6) Inductive reactive power
(7) Capacitive reactive power
(8) Average values during the logging interval (AC voltage, AC current, DC voltage,

DC current)

(9) Additional information

Data volume and
storage capacity

A USB stick 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 stick 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 stick should be deleted.

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

Buffer memory 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.

(8) (9)

NOTE! Using a full USB stick can lead to data loss or data being overwritten.
When using USB sticks, always ensure that there is sufficient storage capacity on
the stick.

33

EN

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 section "Setting
and displaying the menu items", "Viewing and adjusting parameters in the DATCOM menu
item").
On the Fronius Eco, the buffer memory also functions with just a DC supply

Suitable USB
flash drives

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 USB flash drives suitable for building sites 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 drives 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 stick for up­dating the 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.

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).

NOTE! 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.

AC Output Power

NOW

34

Remove USB
stick

Security note concerning the removal of a USB stick:

IMPORTANT! To avoid any loss of data, a
USB stick may only be removed if the fol­lowing conditions are met:

- only remove a USB stick via the
'Safely remove USB / HW' item on the
SETUP menu

- the 'Data transmission' LED has
stopped flashing or comes on steady.

Do not disconnect

USB-Stick

while LED is flashing!

X

35

EN

Notes regarding maintenance

Maintenance

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

Cleaning Clean the inverter and the display as required with a damp cloth.

Do not use cleaning agents, abrasives or solvents to clean the inverter.

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

36

Serial Number Sticker for Customer Use

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 his choosing, e.g. on the
front of the inverter or on the operating ins­tructions.

Application example:
Serial number sticker on the operating inst­ructions and on the front of the inverter

Serial No. on rating plate

?

+

Fronius Inverter
Installation

*

**

1

2

Fronius Inverter
Operating
Instructions

***

37

EN

38

Fronius Worldwide - www.fronius.com/addresses

Under http://www.fronius.com/addresses you will find all addresses of our sales branches and partner firms!

Fronius International GmbH

4600 Wels, Froniusplatz 1, Austria
E-Mail: [e-mail]
http://www.fronius.com

Fronius USA LLC Solar Electronics Division
6797 Fronius Drive, Portage, IN 46368
E-Mail: [e-mail]
http://www.fronius-usa.com