Fronius Primo GEN24 Single Phase Hybrid Instruction Manual
- June 10, 2024
- Fronius
Table of Contents
Primo GEN24 Single Phase Hybrid
Fronius Primo GEN24 Operating Instructions
Product Information
The Fronius Primo GEN24 is a solar inverter that can be used for
both grid-tied and off-grid systems. It is available in different
variations, including 3.0 / 3.0 Plus / 3.6 / 3.6 Plus 4.0 / 4.0
Plus / 4.6 / 4.6 Plus 5.0 / 5.0 Plus / 6.0 / 6.0 Plus.
The device has a thermal concept that ensures high efficiency,
even at high temperatures. It also comes with Fronius Solar.web, a
user-friendly online portal that provides real-time monitoring of
the system performance.
The Fronius Primo GEN24 has several protective features,
including surge protection devices, and complies with the relevant
safety standards.
Product Usage Instructions
Before using the Fronius Primo GEN24, please ensure that you
have read and understood the safety rules and instructions provided
in the user manual.
The device can be used in different operating modes, depending
on the type of system you have. For example, if you have a battery,
you can use the inverter in AC-coupled mode to connect it to
another inverter.
The device also has an energy-saving mode, which allows you to
reduce your energy consumption during times of low demand.
If you plan to use the Fronius Primo GEN24 for backup power,
please ensure that you have the appropriate batteries and that the
device is correctly configured for this mode. The user manual
provides detailed instructions on how to transition from feeding
energy into the grid to backup power mode and vice versa.
When installing the device, please ensure that you follow the
instructions provided in the manual. Some of the key considerations
include choosing the right location for the inverter, selecting the
appropriate fixing material, and ensuring that the device is
properly connected to the electrical system.
If you have any questions or concerns about using the Fronius
Primo GEN24, please consult the user manual or contact Fronius
customer support for assistance.
Operating Instructions
Fronius Primo GEN24 3.0 / 3.0 Plus / 3.6 / 3.6 Plus 4.0 / 4.0 Plus / 4.6 / 4.6
Plus 5.0 / 5.0 Plus / 6.0 / 6.0 Plus
EN Operating Instructions
42,0426,0302,EN
014-02082022
EN
Contents
Safety rules
8
Explanation of safety notices
8
Safety
8
General
8
Environmental conditions
9
Qualified personnel
9
Noise emission values
9
EMC measures
10
Backup power
10
Data protection
11
Copyright
11
Protective earthing (PE)
11
General information
13
Fronius Primo GEN24
15
Device concept
15
Function overview
15
Fronius UP
16
Scope of supply
16
Intended use
16
Thermal concept
17
Fronius Solar.web
17
The various operating modes
19
Operating modes Explanation of symbols
19
Operating mode Inverter with battery
20
Operating mode Inverter with battery and several Smart Meters
20
Operating mode – inverter with battery, AC-coupled to another inverter
21
Operating mode Inverter with battery and backup power function
21
Operating mode Inverter with battery, Ohmpilot and backup power function
21
Operating mode Inverter with battery, further inverter and backup power function
22
Energy flow direction of the inverter
22
Operating states (only for systems with a battery)
23
Energy saving mode
24
General
24
Switch-off conditions
24
Switch-on conditions
24
Special case
24
Indication of energy saving mode
25
Suitable batteries
26
General
26
Limitations in operation
26
BYD Battery-Box Premium
26
Protection of people and equipment
28
Central grid and system protection
28
WSD (wired shutdown)
28
RCMU
28
Surge protective device
28
Control elements and connections
29
Connection area
29
Connection area divider
30
Ground electrode terminal
30
DC disconnector
31
Data communication area
31
Internal schematic connection diagram of the IOs
32
Backup power variant – PV Point (OP)
35
General
37
PV Point (OP)
37
3
Explanation – PV Point (OP)
37
Backup power variant – Full Backup
39
General
41
Prerequisites for backup power mode
41
Transitioning from feeding energy into the grid to backup power mode
41
Transitioning from backup power mode to feeding energy into the grid
41
Backup power and energy saving mode
42
Cabling variants including backup power circuits with 1-pin separation e.g. Austria or Aus- 43
tralia
Functions
43
Transitioning from feeding energy into the grid to backup power mode
43
Transitioning from backup power mode to feeding energy into the grid
43
All-pin separation cabling variant, e.g. Germany, France, Spain, UK
44
Functions
44
Transitioning from feeding energy into the grid to backup power mode
44
Transitioning from backup power mode to feeding energy into the grid
45
All-pin split separation cabling variant (Italy)
46
Functions
46
Transitioning from feeding energy into the grid to backup power mode
46
Transitioning from backup power mode to feeding energy into the grid
47
Installation
49
General
51
Quick-lock system
51
Warning notices on the device
51
System component compatibility
53
Installation location and position
54
Choosing the location of the inverter
54
Choosing the location of third-party batteries
55
Explanation of symbols for the installation position
56
Install the mounting bracket and hang up the inverter
58
Selecting the fixing material
58
Properties of the mounting bracket
58
Do not deform the mounting bracket
58
Fitting the mounting bracket to a wall
58
Installing the mounting bracket on a mast or beam
59
Attaching the mounting bracket to mounting rails
60
Attaching the inverter to the mounting bracket
60
Prerequisites for connecting the inverter
61
Permitted cables
61
Permitted cables for the data communication area
62
Cross section of the AC cable
62
Cross section of the DC cable
63
Maximum alternating current fuse protection
63
Connecting the inverter to the public grid (AC side)
65
Safety
65
Connecting the inverter to the public grid (AC side)
65
Connecting solar module strings to the inverter
68
General comments regarding solar modules
68
Safety
68
PV generator – general information
69
PV generator configuration 3 6 kW
69
Connecting the solar module strings to the inverter
70
Connecting the battery to the inverter
74
Safety
74
Connecting the battery on the DC side
74
Connecting backup power – PV Point (OP)
79
Safety
79
Installation
79
Connecting backup power – Full Backup
84
4
EN
Safety
84
Cabling variants including backup power circuits with 1-pin separation e.g. Austria or Aus- 84
tralia
All-pin separation cabling variant e.g. Germany, France, Spain
85
All-pin separation cabling variant, e.g. UK
86
All-pin separation cabling variant, e.g. Italy
87
Testing backup power mode
88
Connecting the data communication cable
89
Modbus participants
89
Routing data communication cables
90
Connecting the battery communication cables
92
Terminating resistors
92
Installing the WSD (wired shutdown)
94
Closing and commissioning the inverter
95
Closing the inverter’s connection area/housing cover, and commissioning
95
Starting the inverter for the first time
95
Button functions and LED status indicator
96
Installation with the app
97
Installation using the web browser
98
Switching off current supply and restarting the inverter
100
De-energising the inverter and switching it on again
100
Settings – user interface of the inverter
101
User settings
103
User login
103
Selecting the language
103
Device configuration
104
Components
104
Functions andI/Os
105
Demand Response Modes (DRM)
106
Inverter
106
Energy management
110
Energy management
110
Examples – Time-dependent battery control
111
Allowed battery control rules
113
PV power reduction
115
Load management
115
System
117
General
117
Update
117
Setup wizard
117
Restoring the factory settings
117
Event Log
117
Information
117
Licence manager
118
Support
119
Communication
120
Network
120
Modbus
121
Fronius Solar API
122
Safety and grid requirements
123
Country setup
123
Feed-in limitation
123
Dynamic power regulation with several inverters
125
I/O power management
127
Connection diagram – 4 relay
128
I/O power management settings – 4 relays
129
Connection diagram – 3 relay
130
I/O power management settings – 3 relays
131
Connection diagram – 2 relay
132
I/O power management settings – 2 relays
133
5
Connection diagram – 1 relay
134
I/O power management settings – 1 relay
135
Autotest(CEI 0-21)
135
Options
137
Surge protective device (SPD)
139
General
139
Scope of supply
139
De-energising the inverter
139
Installation
140
Commissioning the inverter
146
Appendix
149
Care, maintenance and disposal
151
General
151
Cleaning
151
Maintenance
151
Safety
151
Operation in dusty environments
151
Disposal
152
Guarantee provisions
154
Fronius manufacturer’s warranty
154
Components for automatic Full Backup backup power changeover
155
Components for automatic Full Backup backup power changeover
155
Status codes and remedy
157
Display
157
Status Codes
157
Technical data
158
Fronius Primo GEN24 3.0 / 3.0 Plus
158
Fronius Primo GEN24 3.6 / 3.6 Plus
161
Fronius Primo GEN24 4.0 / 4.0 Plus
164
Fronius Primo GEN24 4.6 / 4.6 Plus
167
Fronius Primo GEN24 5.0 / 5.0 Plus
170
Fronius Primo GEN24 6.0 / 6.0 Plus
173
Technical data of surge protective device DC SPD type 1+2 GEN24
176
Explanation of footnotes
176
Integrated DC disconnector
176
Circuit diagrams
179
Circuit Diagram – PV Point (OP)
181
Circuit Diagram
181
Fronius Primo GEN24 and BYD Battery-Box Premium HV
182
Circuit Diagram
182
Fronius Primo GEN24 with two BYD Battery-Box Premium HV connected in parallel
183
Circuit Diagram
183
Fronius Primo GEN24 with three BYD Battery-Box Premium HV connected in parallel
184
Circuit Diagram
184
Automatic switch to backup power 1-pin double separation – e.g. Austria
185
Circuit Diagram
185
Automatic switch to backup power 1-pin single separation – e.g. Australia
186
Circuit Diagram
186
Automatic switch to backup power 2-pin double separation – e.g. Germany
187
Circuit Diagram
187
Automatic switch to backup power 2-pin single separation – e.g. France, Spain
188
Circuit Diagram
188
Automatic switch to backup power 2-pin double separation – e.g. UK
189
Circuit Diagram
189
Automatic switch to backup power 2-pin double separation with ext. grid and system protec- 190
tion – e.g. Italy
Circuit Diagram
190
Fronius Primo GEN24 with Enwitec Box
191
6
EN
Circuit Diagram
191
Wiring diagram – surge protective device SPD
192
Circuit Diagram
192
Dimensions of the inverter
193
Fronius Primo GEN24 3 – 6 kW
195
Fronius Primo GEN24 3 – 6 kW
195
7
Safety rules
Explanation of safety notices
WARNING!
Indicates a potentially hazardous situation.
If not avoided, death or serious injury may result.
CAUTION!
Indicates a situation where damage could occur.
If not avoided, minor injury and/or damage to property may result.
NOTE! Indicates a risk of flawed results and possible damage to the equipment.
If you see any of the symbols depicted in the “Safety rules” chapter, special
care is required.
Safety
CAUTION!
Danger from crushing due to the incorrect handling of attachments and
connection parts. Injuries to limbs may result.
When lifting up, putting down and attaching the inverter, use the integrated
grips.
When fitting attachments, ensure that no limbs are located between the
attachment and the inverter.
Do not hold onto the individual poles on the terminals when locking and
unlocking.
General
The device has been manufactured in line with the state of the art and
according to recognised safety standards. In the event of incorrect operation
or misuse, there is a risk of – Injury or death to the operator or a third
party – Damage to the device and other material assets belonging to the
operating
company
All personnel involved in commissioning, maintenance, and servicing of the
device must: – Be suitably qualified – Have knowledge of and experience in
dealing with electrical installations – Have fully read and precisely followed
these Operating Instructions
In addition to the Operating Instructions, all applicable local rules and
regulations regarding accident prevention and environmental protection must
also be followed.
8
EN
All safety and danger notices on the device: – Must be kept in a legible state
– Must not be damaged – Must not be removed – Must not be covered, pasted, or
painted over
Only operate the device when all protection devices are fully functional. If
the protection devices are not fully functional, there is a danger of – Injury
or death to the operator or a third party – Damage to the device and other
material assets belonging to the operating
company
Any safety devices that are not fully functional must be repaired by an
authorized specialist before the device is switched on.
Never bypass or disable protection devices.
For the location of the safety and danger notices on the device, refer to the
chapter headed “Warning notices on the device” in the Operating Instructions
for your device.
Faults that could compromise safety must be remedied before switching on the
device.
Environmental conditions
Operation or storage of the device outside the stipulated area will be deemed as not in accordance with the intended purpose. The manufacturer accepts no liability for any damage resulting from improper use.
Qualified personnel
The servicing information contained in these operating instructions is
intended only for the use of qualified service engineers. An electric shock
can be fatal. Do not carry out any actions other than those described in the
documentation. This also applies to qualified personnel.
All cables and leads must be secured, undamaged, insulated and adequately
dimensioned. Loose connections, scorched, damaged or inadequately dimensioned
cables and leads must be immediately repaired by authorised personnel.
Maintenance and repair work must only be carried out by an authorised
specialist.
It is impossible to guarantee that bought-in parts are designed and
manufactured to meet the demands made on them, or that they satisfy safety
requirements. Use only original spare parts (also applies to standard parts).
Do not carry out any alterations, installations, or modifications to the
device without first obtaining the manufacturer’s permission.
Components that are not in perfect condition must be changed immediately.
Noise emission values
The sound power level of the inverter is specified in the Technical data.
The device is cooled as quietly as possible with the aid of an electronic
temperature control system; this depends on the amount of converted power, the
ambient temperature, the level of soiling of the device, etc.
It is not possible to provide a workplace-related emission value for this
device because the actual sound pressure level is heavily influenced by the
installation
9
situation, the grid quality, the surrounding walls and the properties of the room in general.
EMC measures
In certain cases, even though a device complies with the standard limit values for emissions, it may affect the application area for which it was designed (e.g. when there is sensitive equipment at the same location, or if the site where the device is installed is close to either radio or television receivers). If this is the case, then the operator is obliged to take appropriate action to rectify the situation.
Backup power
This system has backup power functions. This enables a replacement power
supply to be established in the event of a failure in the public grid.
Where an automatic backup power supply is installed, a backup power warning
notice (https://www.fronius.com/en/search-page, item number: 42,0409,0275)
must be fitted on the electrical distributor.
Maintenance and installation work in the home network requires both
disconnection on the utility side and deactivation of the replacement power
mode by opening the integrated DC disconnector on the inverter.
Depending on the insolation conditions and the battery state of charge, the
backup power supply is automatically deactivated and activated. This can cause
the backup power supply to unexpectedly return from standby mode. Therefore,
installation work can only be performed on the home network when the backup
power supply is deactivated.
Influencing factors on the total power in backup power mode:
Reactive power Electrical loads with a power factor not equal to 1 also
require reactive power in addition to effective power. The reactive power also
loads the inverter. Therefore, to correctly calculate the actual total power,
it is not the rated power of the load that is relevant, but the current caused
by effective and reactive power.
Devices with a high reactive power are mainly electric motors such as: – Water
pumps – Circular saws – Blowers and fans
High starting current Electrical loads that need to accelerate a large mass
usually require a high starting current. This can be up to 10 times higher
than the nominal current. The maximum current of the inverter is available for
the starting current. Loads with too high starting currents therefore cannot
be started/operated, even though the nominal power of the inverter suggests
that they can. When dimensioning the backup power circuit, the connected load
power and any starting current must also be taken into account.
Devices with high starting currents are, for example: – Devices with electric
motors (e.g. lifting platform, circular saws, planing
bench) – Devices with large transmission ratio and flywheel mass – Devices
with compressors (e.g. compressed air compressors, air conditioning
systems)
IMPORTANT! Very high starting currents can cause short-term distortion or a
drop in output
10
EN
voltage. The simultaneous operation of electronic devices in the same backup
power supply system should be avoided.
IMPORTANT! The inverter may only be operated within the limits of its
technical capabilities. Operation outside of its technical capabilities can
cause the inverter to shut down.
Data protection
The user is responsible for the safekeeping of any changes made to the factory settings. The manufacturer accepts no liability for any deleted personal settings.
Copyright
Copyright of these operating instructions remains with the manufacturer.
The text and illustrations are all technically correct at the time of
printing. We reserve the right to make changes. The contents of the operating
instructions shall not provide the basis for any claims whatsoever on the part
of the purchaser. If you have any suggestions for improvement, or can point
out any mistakes that you have found in the instructions, we will be most
grateful for your comments.
Protective earthing (PE)
Connection of a point in the device, system or installation to earth to
protect against electric shock in the event of a fault. When installing a
safety class 1 inverter (see Technical data), the ground conductor connection
is required.
When connecting the ground conductor, ensure that it is secured against
accidental disconnection. All the points listed in the chapter Connecting the
inverter to the public grid (AC side) on page 65 must be observed. It must be
ensured that when using the strain relief devices, the ground conductor is the
last to be disconnected in the event of a possible failure. When connecting
the ground conductor, the minimum cross-section requirements specified by the
respective national standards and guidelines must be observed.
11
12
General information
13
14
EN
Fronius Primo GEN24
Device concept
The inverter transforms the direct current generated by the PV modules into alternating current. This alternating current is fed into the public grid and synchronized with the mains voltage in use. Moreover, the solar energy can also be stored in a connected battery for later use.
The inverter is intended for use in grid-connected photovoltaic systems. The inverter has backup power functions and switches to backup power mode if it has been wired accordingly*.
The inverter automatically monitors the public grid. Whenever conditions in the electric grid are inconsistent with standard conditions (for example, grid switchoff, interruption), the inverter will immediately stop producing power and interrupt the supply of power into the grid. The grid is monitored by monitoring the voltage, frequency and islanding conditions.
After installation and commissioning, the inverter’s operation is fully automatic; the inverter draws the maximum possible power from the PV modules. Depending on the operating point, this power is used in the home, stored in a battery* or fed into the grid.
As soon as the energy provided by the PV modules is no longer sufficient, the power from the battery is fed into the home. Depending on the setting, power may also be obtained from the public grid in order to charge the battery*.
When its temperature gets too high, the inverter automatically reduces the output or charging power, or switches off completely, in order to protect itself. Reasons for the temperature being too high include a high ambient temperature or insufficient heat dissipation (for example, inadequate heat dissipation when installed in switch cabinets).
Depending on the device variant, suitable battery, appropriate wiring, set-
tings and local standards and guidelines.
Function overview
Function Backup power variant – PV Point (OP)
Battery connection*
Backup power variant – Full Backup
Primo GEN24
Available as an option
Available as an option
Primo GEN24 Plus
For suitable batteries, see chapter Suitable batteries.
** The functions are optionally available via Fronius UP (see chapter Fronius
UP).
15
Fronius UP
With Fronius UP*, the inverter can be expanded by the authorised specialist to include optionally available functions (see chapter Function overview).
The availability of Fronius UP varies from country to country. For more in-
formation on Fronius UP and availability, see Installation guide: Fronius
GEN24 & GEN24 Plus.
Scope of supply
(1) Housing cover (2) Inverter (3) Mounting bracket (illustration) (4) Quick Start guide
Intended use
The inverter is designed to convert direct current from PV modules into
alternating current and feed this power into the public grid. A backup power
mode* is possible provided that appropriate cabling has been installed.
The following are considered improper use: – Utilisation for any other
purpose, or in any other manner – Alterations to the inverter are not
permitted unless expressly recommended
by Fronius – Installation of components is not permitted unless 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.
Intended use also means: – Carefully reading and obeying all the instructions,
as well as safety
and danger notices in the Operating Instructions – Installation in accordance
with chapter “Installation” from page 49
When configuring the photovoltaic system, make sure that all components of the
photovoltaic system are operating exclusively within their permissible
operating range.
Observe all measures recommended by the PV module manufacturer to permanently
maintain the PV module properties.
Observe the grid operator’s regulations for energy fed into the grid and
connection methods.
16
EN
The Fronius GEN24 inverter is a grid-connected inverter with a backup power
function it is not a stand-alone inverter. The following restrictions must
there-
fore be observed in backup power mode:
– Backup power mode may be in operation for at least 2000 hours – Backup power
mode may be in operation for more than 2000 operating hours
if 20% of the duration of the inverter’s grid power feed operation is not ex-
ceeded at the relevant time.
Depending on the device variant, suitable battery, appropriate wiring, set-
tings and local standards and guidelines.
Thermal concept
Ambient air is drawn in by the fan on the front side and blown out at the device sides. The even heat dissipation allows several inverters to be installed next to each other.
NOTE!
Risk due to insufficient cooling of the inverter. This may result in a loss of
power in the inverter.
Do not block the fan (for example, with objects that protrude through the
touch guard).
Do not cover the ventilation slots, even partially. Make sure that the ambient
air can always flow through the inverter’s ventila-
tion slots unimpeded.
Fronius Solar.web
With Fronius Solar.web or Fronius Solar.web Premium, the PV system can be easily monitored and analysed by the system owner and installer. If configured accordingly, the inverter transmits data such as power, yields, load, and energy balance to Fronius Solar.web. For more information see Solar.web – monitoring & analysis.
Configuration is carried out via the setup wizard, see chapter Installation with the app on page 97 or Installation using the web browser on page 98.
Prerequisites for configuration:
– Internet connection (download: min. 512 kBit/s, upload: min. 256 kBit/s)*. –
User account on solarweb.com. – Completed configuration via the setup wizard.
The information given does not constitute an absolute guarantee of fault-
less function. High error rates in the transmission, reception fluctuations
or transmission drop-outs can have a negative effect on the data transfer.
17
Fronius recommends testing the Internet connection on site according to the
minimum requirements.
18
EN
The various operating modes
Operating modes Explanation of symbols
PV module generates direct current
Fronius GEN24 inverter converts direct current into alternating current and
charges the battery (battery charging is only possible with Fronius GEN24 Plus
inverters). The integrated system monitoring enables the inverter to be
integrated into a network by means of WLAN. Additional inverter in the system
converts the direct current into alternating current. However, it cannot
charge a battery, and is not available in backup power mode. Battery is
coupled to the inverter on the direct current side, and stores electrical
energy.
Fronius Ohmpilot for using excess energy to heat water.
Primary meter records the system’s load curve and provides measurement data
for energy profiling in Fronius Solar.web. The primary meter also controls the
dynamic feed-in control.
Secondary meter records the load curve of individual loads (e.g. washing
machine, lamps, TV, heat pump, etc.) in the consumption branch and provides
measurement data for energy profiling in Fronius Solar.web. Loads in the PV
system are the loads connected in the system.
Additional loads and generators in the system are connected to the system by
means of a utility meter.
PV Point is a non-uninterruptible single-phase backup power circuit which
supplies electrical devices with up to 3 kW if sufficient power is available
from the PV modules or the battery.
Full Backup the inverter is prepared for backup power mode. The backup power
mode must be implemented in the switch cabinet by the electrician performing
the installation. The PV system operates in a stand-alone manner in backup
power mode.
19
Grid supplies the loads in the system if insufficient power is being generated by the PV modules or supplied by the battery.
Operating mode Inverter with battery
In order to be able to obtain the highest rate of self-consumption with your PV system, a battery can be used to store excess energy. The battery is coupled to the inverter on the direct current side. Multiple current conversion is therefore not required, and the efficiency is increased.
0 0 1 67
1
Operating mode Inverter with battery and several Smart Meters
0 0 1 67
2
0 0 1 67
1
20
EN
Operating mode – inverter with battery, ACcoupled to another inverter
0
01
6 7
1
-+
Operating mode Inverter with battery and backup power function
IMPORTANT! In backup power mode, an increased nominal frequency is used in
order to prevent undesired parallel operation with other power generators.
In the fully equipped hybrid PV system, the inverter can: – Supply loads in
the house – Store excess energy in the battery and/or feed it into the grid –
Supply connected loads in the event of a power failure
0 0 1 67
1
-+
Operating mode Inverter with battery, Ohmpilot and backup power function
IMPORTANT! In the fully equipped hybrid PV system with a Fronius Ohmpilot, the Ohmpilot cannot be operated in the event of a power failure for regulatory reasons. It is therefore sensible to install the Ohmpilot outside of the backup power branch.
21
0 0 1 67
1
-+
Operating mode Inverter with battery, further inverter and backup power function
In the hybrid photovoltaic system, batteries must only be connected to one
inverter with battery support. Batteries cannot be split between multiple
inverters with battery support. However, depending on the battery
manufacturer, several batteries can be combined on one inverter.
0 0 1 67
1
-+
Energy flow direction of the inverter
In the case of hybrid inverters, there are four different energy flow directions:
22
EN
(1)
(2)
DC=
(3) -+
(4)
AC~
DC=
(1) PV module inverter load/grid (2) PV module inverter battery (3)
Battery inverter load/grid (4) Grid inverter battery*
- depending on the settings and local standards and regulations.
Operating states (only for systems with a battery)
Battery systems distinguish different operating states. In this case, the relevant current operating state is displayed on the user interface of the inverter or in Solar.web.
Operating state
Description
Normal operation
Energy is stored or drawn, as required.
Min. state of charge (SOC) Battery has reached the minimum SOC set or
achieved
specified by the manufacturer. The battery cannot
be discharged any further.
Energy saving mode (standby)
The system has been put into energy saving mode. Energy saving mode is automatically ended as soon as sufficient excess energy is available again.
Start
The storage system starts from energy saving mode (standby).
Forced re-charging
The inverter re-charges the battery, in order to maintain the set minimum SOC (state of charge) or the SOC specified by the manufacturer (protection against deep discharge).
Deactivated
The battery is not active. It has either been deactivated/switched off, or an error means that no communication with the battery is possible.
23
Energy saving mode
General
Energy saving mode (standby mode) is used to reduce the self-consumption of
the system. Both the inverter and the battery automatically switch to energy
saving mode under certain conditions.
The inverter switches to energy saving mode if the battery is flat and no PV
power is available. Only the inverter’s communication with the Fronius Smart
Meter and Fronius Solar.web is maintained.
Switch-off conditions
If all the switch-off conditions are met, the battery switches into energy
saving mode within ten minutes. This time delay ensures that the inverter can
at least be restarted.
The battery state of charge is less than or equal to the input minimum state
of charge.
The current charging or discharging power of the battery is less than 100 W.
Less than 50 W is available for charging the battery. The power of feeding
into the public grid is at least 50 W less than the power currently required
in the home network.
The inverter automatically switches into energy saving mode, following the
battery.
Switch-on conditions
If one of the following conditions is met for at least 30 seconds, energy
saving mode is ended: – Energy saving mode is no longer permissible owing to a
changed setting on
the user interface of the inverter. – If dynamic power reduction of 0 is set,
or if the system is operating in backup
power mode, the power of feeding into the public grid is always less than the
required power in the home network. There is a separate condition for this
case (dynamic power reduction < 300 W or active backup power mode): If the PV
power is above a specified threshold, energy saving mode is ended. – Battery
charging from the public grid is requested via the user interface of the
inverter. – The battery is being recharged in order to restore the minimum
state of charge or perform calibration.
Special case
If the inverter does not operate for 12 minutes (e.g. fault), or there is an interruption in the electrical connection between the inverter and the battery and there is no backup power mode, the battery switches to energy-saving mode in any case. This reduces self discharge of the battery.
24
5
EN
Indication of energy saving mode
During energy saving mode:
– Operating LED for the inverter lights up orange (see Button functions and
LED status indicator on page 96).
– The user interface of the inverter can be reached. – All the available data
is saved and transmitted to Solar.web. – The real-time data can be seen on
Solar.web.
Energy saving mode is shown on the user interface of the inverter and in
Solar.web by an “i” beside the battery symbol in the system overview.
%
Energy-saving mode
25
Suitable batteries
General
Fronius explicitly points out that the third-party batteries are not Fronius
products. Fronius is not the manufacturer, distributor or retailer of these
batteries. Fronius accepts no liability and offers no service or guarantees
for these batteries.
Obsolete firmware/software states may lead to incompatibilities between the
inverter and the battery. In this case, the following steps are to be
performed: 1 Update battery software see the battery documentation. 2 Update
inverter firmware see Update on page 117.
Read this document and the Installation Instructions before installing and
commissioning the external battery. The documentation is either enclosed with
the external battery or can be obtained from the battery manufacturer or their
service partners
All documents associated with the inverter can be found at the following
address:
https://www.fronius.com/en/solar-energy/installers-partners/service-support/
tech-support
Limitations in operation
If the DC voltage exceeds 520 V, the battery can no longer be charged or
discharged. The voltage of 520 V is rarely exceeded during normal operation of
the inverter.
When the output power of the inverter is reduced, the operating point shifts
towards higher DC voltages. The following conditions during normal operation
can lead to the DC voltage of 520 V being exceeded: – Overdimensioning of the
PV generator. – Feed-in limitation (e.g. zero feed-in). – Specifications of
the grid operator (e.g. mains voltage-dependent power re-
duction). – Backup power mode. If the 520 V voltage is exceeded during backup
power,
backup power operation may be restricted. Therefore, an open circuit voltage
of max. 520 V is recommended.
BYD BatteryBox Premium
BYD Battery-Box Premium HVS Fronius Primo GEN24 3.0 – 6.0*
Fronius Primo GEN24 3.0 – 6.0 Plus
Number of battery modules Battery parallel operation**
5.1 7.7 10.2 12.8
2
3
4
5
BYD Battery-Box Premium HVM Fronius Primo GEN24 3.0 – 6.0*
8.3 11.0 13.8 16.6 19.3 22.1
26
EN
BYD Battery-Box Premium HVM Fronius Primo GEN24 3.0 – 6.0 Plus Number of battery modules Battery parallel operation**
8.3 11.0 13.8 16.6 19.3 22.1
3
4
5
6
7
8
Battery support optionally available.
** Max. 3 batteries with the same capacity can be combined.
IMPORTANT! According to the manufacturer’s specifications, the max. DC cable length is 20 m. More detailed information can be found in the manufacturer’s documents.
IMPORTANT! To ensure reliable operation with a BYD Battery-Box Premium, the following switch-on sequence for the system must always be observed.
1
Switch on the battery.
2
Set the DC disconnector to the “On”
switch position. Switch on the auto-
matic circuit breaker.
27
Protection of people and equipment
Central grid and system protection
The inverter offers the option to use the integrated AC relays as coupling switches in conjunction with a central grid and system protection unit (in accordance with VDE-AR-N 4105:2018:11 §6.4.1). For this purpose, the central trigger device (switch) must be integrated into the WSD chain as described in the chapter “WSD (Wired Shut Down)”.
WSD (wired shutdown)
The wired shutdown (WSD) interrupts the inverter feeding energy into the grid
if the trigger device (switch) has been activated.
If an inverter (secondary device) fails, it is bypassed and the other
inverters continue operating. If a second inverter (secondary device) or the
inverter (primary device) fails, the operation of the entire WSD chain is
interrupted.
For installation, see Installing the WSD (wired shutdown) on page 94.
RCMU
The inverter is equipped with a universal current-sensitive residual current monitoring unit (RCMU = Residual Current Monitoring Unit) in accordance with IEC 62109-2. This device monitors residual currents from the PV module to the AC output of the inverter and disconnects the inverter from the grid in the event of unauthorised residual current.
Surge protective device
The inverter is equipped with an integrated surge protective device on the DC and AC side in accordance with IEC 62109-2. The surge protective device protects the system against damage in the event of an overvoltage.
28
EN
Control elements and connections
Connection area
(1) 2 x 5-pin DC push-in terminal (2) Push-in WSD (wired shutdown) terminal
(3) Push-in terminals in the data communication area (Modbus, digital inputs
and outputs) (4) 3-pin push-in terminal for PV Point (OP) (5) 3-pin AC push-in
terminal (6) Cable gland/strain-relief device AC (7) 6-pin ground electrode
terminal (8) Cable gland/strain-relief device in the data communication area
29
(9) Connection area divider (10) 10 x DC cable glands (11) Optional cable gland (M16) (12) Optional cable gland (M16 – M20) (13) Optional cable gland (M16 – M32) (14) Optional cable gland (M16 – M25)
Connection area divider
The connection area divider separates the high-voltage conductors (DC and AC) from the signal lines. To make it easier to reach the connection area, the divider can be removed for the connection work, and must be re-inserted.
(1) Integrated cable duct (2) Recesses for removing the con-
nection area divider (3) Snap tabs for locking/unlocking (4) Defined breaking
point for the
Datcom connection
The integrated cable duct (1) allows for the lines to be laid from one area of the inverter to the other. As a result, multiple inverters can be easily installed next to each other.
Ground electrode terminal
The ground electrode terminal Allows additional components to be earthed, such
as:
– AC cable – Module mounting system – Ground rod
30
EN
DC disconnector
Data communication area
The DC disconnector has three switch settings:
(1) Locked/off (turned to the left) (2) Off (3) On
IMPORTANT! In switch settings (1) and (3), a conventional padlock can be used
to secure the inverter against being switched on/ off.
– The national guidelines must be complied with in this respect.
Modbus terminal WSD (wired shutdown) switch
Push-in terminal for the installation of modbus 0, modbus 1, 12 V and GND
(ground).
The data connection to the connected components is established via the Modbus
terminal. The inputs M0 and M1 can be selected for this purpose. Max. 4 Modbus
participants per input, see chapter Modbus participants on page 89.
Defines the inverter as a WSD primary device or WSD secondary device.
Position 1: WSD primary device Position 0: WSD secondary device
31
Modbus 0 (MB0) switch
Modbus 1 (MB1) switch
Optical sensor Communication LED Operating status LED LAN 1
LAN 2 WSD terminal IOs terminal
Switches the terminating resistor for modbus 0 (MB0) on/off.
Position 1: Terminating resistor on (factory setting) Position 0: Terminating
resistor off
Switches the terminating resistor for modbus 1 (MB1) on/off.
Position 1: Terminating resistor on (factory setting) Position 0: Terminating
resistor off
To operate the inverter. See chapter Button functions and LED status indicator
on page 96.
Indicates the inverter connection status.
Indicates the inverter operating status.
Ethernet connection for data communication (e.g. WLAN router, home network or
for commissioning with a laptop see chapter Installation using the web browser
on page 98).
Reserved for future functions. Only use LAN 1 to avoid malfunctions.
Push-in terminal for the WSD installation. See chapter “WSD (wired shutdown)”
on page 28.
Push-in terminal for digital inputs/ outputs. See chapter Permitted cables for
the data communication area on page 62. The designations (RG0, CL0, 1/5, 2/6,
3/7, 4/8) on the terminal refer to the Demand Response Mode function, see
chapter Functions andI/Os on page 105.
Internal schematic connection diagram of the IOs
On the V+/GND pin, it is possible to feed in a voltage of around 12.5 – 24 V (+ max. 20%) with an external power supply. The outputs IO 0 – 5 can then be operated with the external voltage. A maximum of 1 A can be drawn per output, with a maximum of 3 A allowed in total. The fuse protection must be located externally.
CAUTION!
Risk of polarity reversal at the terminals due to improper connection of
external power supplies. This may result in severe damage to the inverter.
Check the polarity of the external power supply with a suitable measuring
device before connecting it.
Connect the cables to the V+/GND outputs with the correct polarity.
32
EN
IMPORTANT! If the total output (6 W) is exceeded, the inverter switches off the entire external power supply.
V+
V+
12 V DC
V+ M0+ SHIELD M1+ V+
500 mA (1)
GND
GND
M0+ M0-
SHIELD SHIELD
M1+ M1-
GND M0SHIELD M1GND
V+ V+ IO0 IO2 IO4 IN6 IN8 IN10
IO1 IO0
IO3 IO2
IO5 IO4
IN7 IN6
IN9 IN8
IN11 IN10
GND GND
IO1 IO3 IO5 IN7 IN9 IN11
12 V 5 V
USB TYP A
V+
V+
GND GND
(1) Power limitation
33
34
Backup power variant – PV Point (OP)
35
36
EN
General
PV Point (OP)
IMPORTANT! If several backup power variants are available, please note that
only one backup power variant may be installed and configured.
With the PV Point, in the event of a failure of the public grid, electrical
devices can be connected to the Opportunity Power (OP) terminal and supplied
with a maximum power of 3 kW, if enough power is available from the PV modules
or an optional battery. In grid-connected operation, the OP terminal is not
supplied with voltage, therefore the connected loads will not be supplied with
power in this operating mode.
IMPORTANT! A relay-based network switching setup is not possible.
Explanation – PV The inverter can provide 120 to 240 V at the PV Point. A corresponding configur-
Point (OP)
ation must be set up during commissioning.
At 120 to 240 V output voltage, a maximum of 13 A AC continuous current is available.
For example: 120 V = max. 1.5 kW 230 V = max. 3 kW
In backup power mode, some electrical appliances cannot function properly as starting currents are too high (for example, fridges and freezers). It is recommended to switch off non-essential loads during backup power mode. Overload capacity of 35% is possible for a duration of 5 seconds, depending on the capacity of the solar modules and/or the battery at that moment in time.
There is a brief interruption when switching from grid-connected mode to backup power mode. For this reason, the backup power function cannot be used as an uninterruptible power supply, for example for computers.
If no energy from the battery or the solar modules is available in backup power mode, backup power mode ends automatically. If sufficient energy becomes available from the solar modules once again, backup power mode starts again automatically.
In the event of excessive consumption, backup power mode is stopped and the “backup power overload” status code is displayed on the inverter’s LED status indicator. The maximum power in backup power mode according to the technical data must be observed.
37
38
Backup power variant – Full Backup
39
40
EN
General
Prerequisites for backup power mode
IMPORTANT! If several backup power variants are available, please note that only one backup power variant may be installed and configured.
In order to use the inverter’s backup power function, the following
prerequisites
must be fulfilled:
– The inverter must support the backup power variant Full Backup (see
chapter Function overview on page 15).
– A battery suitable for backup power use must be installed and configured. –
Correct cabling of the backup power system in the electrical installation or
usage of a switch box from Enwitec (see chapter Components for automatic
Full Backup backup power changeover on page 155 or Circuit diagrams on
page 179).
– Mount and configure the Fronius Smart Meter at the feed-in point. – Attach a
warning notice for the backup power supply (https://www.froni-
us.com/en/search-page, item number: 42,0409,0275) on the electrical dis-
tributor.
– Apply the necessary settings in the “Devices and system components”
“Functions and pins” “Backup power” menu area and activate backup
power.
– Follow the backup power checklist (https://www.fronius.com/en/searchpage,
item number: 42,0426,0365) step by step and confirm.
Transitioning from feeding energy into the grid to backup power mode
1. The public grid is monitored by the inverter’s internal grid and system
protection unit and by the Fronius Smart Meter connected to it.
2. The public grid fails or specific grid parameters are dropped below or
exceeded.
3. The inverter carries out the measures necessary according to the country
standard and then switches off.
4. The inverter starts backup power mode after a checking period. 5. All
loads in the household that are in the backup power circuit are supplied
by the battery and the PV modules. The remaining loads are not supplied
with power and are safely isolated.
Transitioning from backup power mode to feeding energy into the grid
1. The inverter is operating in backup power mode. 2. The public grid is
functioning correctly again. 3. The Fronius Smart Meter monitors the grid
parameters on the public grid
and passes this information to the inverter.
4. The stability of the returned public grid is determined by checking the
measured values of the Fronius Smart Meter.
5. The inverter ends backup power mode. 6. All circuits are reconnected to
the public grid and are supplied by the grid. 7. The inverter can start
feeding energy into the grid again after performing the
grid checks required by the relevant standard.
41
Backup power and energy saving mode
Under the following conditions, the battery and the inverter are switched to
energy saving mode after a waiting time of 8 – 12 minutes and backup power
mode is ended: – The battery is discharged to the minimum state of charge and
no energy is
coming from the PV modules. – The inverter is set to energy saving mode
(standby mode).
If the battery and inverter are in energy saving mode, the system is
reactivated by the following: – Enough energy is available from the solar
modules. – The public grid is functioning again. – The battery is switched off
and on.
42
EN
Cabling variants including backup power circuits with 1-pin separation e.g. Austria or Australia
Functions
– Measuring and transferring the required parameters for energy management and
Solar.web by the Fronius Smart Meter.
– Disconnecting from the public grid to enable operation in backup power mode
if the grid parameters are outside the country-specific standards.
– Reconnecting to the public grid when the grid parameters are within the
limits specified by the country-specific standards.
– Option of having a separate backup power circuit or several backup power
circuits that are supplied even during failure of the public grid. The total
load
of the backup power circuits must not exceed the nominal output of the in-
verter. Furthermore, the performance of the connected battery must also be
considered.
Transitioning from feeding energy into the grid to backup power mode
1. The public grid is monitored by the inverter’s internal grid and system
protection unit and by the Fronius Smart Meter connected to it.
2. Failure of the public grid. 3. The inverter carries out the necessary
measures according to the country
standard and then switches off. Contactors K1 and K2 (K2 – optional in
Australia) drop out. This disconnects the backup power circuits and the
inverter from the rest of the home network and from the public grid, as the
main contacts of the contactors K1 and K2 1-pin open. The inverter activates
relay K3, which interrupts the supply to contactors K1 and K2. This prevents
unintentional activation of contactors K1 and K2 and thus a grid connection
when voltage is restored in the grid. The NC auxiliary contacts of contactors
K1 and K2 send feedback to the inverter that the contactors are open (a
condition for starting backup power mode). 4. The NO contact of relay K3 gives
additional feedback to the inverter on whether the locking was successfully
performed by relay K3. 5. The inverter decides based on the contactors’
feedback as well as the measurements on the inverter terminals and the Smart
Meter that backup power mode can be started. 6. After all the required
activation tests have been carried out, the inverter starts backup power mode.
7. All loads in the backup power circuits are supplied with power. The
remaining loads are not supplied with power and are safely isolated.
Transitioning from backup power mode to feeding energy into the grid
1. The inverter is operating in backup power mode. The contactors K1 and K2
to the public grid are open.
2. Public grid available again. 3. The Fronius Smart Meter monitors the grid
parameters on the public grid
and passes this information to the inverter.
4. The stability of the returned public grid is determined by checking the
measured values of the Fronius Smart Meter.
5. The inverter ends backup power mode and disconnects the outputs. 6. The
inverter deactivates K3. The contactors K1 and K2 are reactivated. 7. All
circuits are reconnected to the public grid and are supplied by the grid.
The inverter does not feed anything into the grid at this time.
8. The inverter can start feeding energy into the grid again after performing
the grid checks required by the relevant standard.
43
All-pin separation cabling variant, e.g. Germany, France, Spain, UK
Functions
– Measuring and transferring the required parameters for energy management and
Solar.web by the Fronius Smart Meter.
– Disconnecting from the public grid to enable operation in backup power mode
if the grid parameters are outside the country-specific standards.
– Reconnecting to the public grid when the grid parameters are within the
limits specified by the country-specific standards.
– Establishing a proper ground connection for backup power mode to ensure the
protection devices function correctly.
– Option of having a separate backup power circuit or several backup power
circuits that are supplied even during failure of the public grid. The total
load
of the backup power circuits must not exceed the nominal output of the in-
verter. Furthermore, the performance of the connected battery must also be
considered.
Transitioning from feeding energy into the grid to backup power mode
1. The public grid is monitored by the inverter’s internal grid and system
protection unit and by the Fronius Smart Meter connected to it.
2. Failure of the public grid. 3. The inverter carries out the necessary
measures according to the country
standard and then switches off. Contactors K1, K2 (K2 – optional in France and
Spain), K4 and K5 drop out. This disconnects the backup power circuits and the
inverter from the rest of the home network and from the public grid, as the
main contacts of the contactors K1 and K2 open at all pins. The NC auxiliary
contacts of contactors K1 and K2 send feedback to the inverter that the
contactors are open (a condition for starting backup power mode). 4. The NC
main contacts of contactors K4 and K5 are closed, establishing a connection
between the neutral conductor and the ground conductor. The two other NC main
contacts of contactors K4 and K5 give feedback to the inverter that the ground
connection has been established correctly (a condition for starting backup
power mode). 5. The inverter activates relay K3, which interrupts the supply
to contactors K1, K2, K4 and K5. This prevents unintentional activation of
contactors K1, K2, K4 and K5 and thus a grid connection when voltage is
restored in the grid. 6. The NO contact of relay K3 gives additional feedback
to the inverter on whether the locking was successfully performed by relay K3.
7. The inverter decides based on the contactor’s feedback as well as the
measurements on the inverter terminals and the Smart Meter that the emergency
power mode can be activated. 8. After all the required activation tests have
been carried out, the inverter starts backup power mode. 9. All loads in the
backup power circuits are supplied with power. The remaining loads are not
supplied with power and are safely isolated.
44
EN
Transitioning from backup power mode to feeding energy into the grid
1. The inverter is operating in backup power mode. The contactors K1 and K2
to the public grid are open.
2. Public grid available again. 3. The Fronius Smart Meter monitors the grid
parameters on the public grid
and passes this information to the inverter.
4. The stability of the returned public grid is determined by checking the
measured values of the Fronius Smart Meter.
5. The inverter ends backup power mode and disconnects the outputs. 6. The
inverter deactivates K3. Power is restored to contactors K1, K2, K4 and
K5.
7. All circuits are reconnected to the public grid and are supplied by the
grid. The inverter does not feed anything into the grid at this time.
8. The inverter can start feeding energy into the grid again after performing
the grid checks required by the relevant standard.
45
All-pin split separation cabling variant (Italy)
Functions
– Measuring and transferring the required parameters for energy management and
Solar.web by the Fronius Smart Meter.
– Monitoring of the voltage and frequency grid parameters by the inverter. –
Disconnecting from the public grid to enable operation in backup power
mode if the grid parameters are outside the country-specific standards.
– Reconnecting to the public grid when the grid parameters are within the
limits specified by the country-specific standards.
– Establishing a correct ground connection for backup power mode. – Option of
having a separate backup power circuit or several backup power
circuits that are supplied even during failure of the public grid. The total
load
of the backup power circuits must not exceed the nominal output of the in-
verter. Furthermore, the performance of the connected battery must also be
considered.
Transitioning from feeding energy into the grid to backup power mode
1. The public grid is monitored by the inverter’s internal grid and system
protection unit and by an external grid and system protection unit.
2. Failure of the public grid 3. The inverter carries out the measures
necessary according to the country
standard and then switches off.
4. The external grid and system protection unit opens contactors K1 and K2
for grid monitoring. This disconnects the backup power circuits and the
inverter
from the rest of the home network and from the public grid, as the main con-
tacts of the contactors K1 and K2 open at all pins. To ensure that the public
grid has definitely been disconnected, the NC auxiliary contacts of contactor
K1 give feedback to the external grid and system protection unit.
5. The NC main contact of contactors K4 and K5 is closed, establishing a
connection between the neutral conductor and the ground conductor. The two
other NC main contacts of contactors K4 and K5 give feedback to the invert-
er that the ground connection has been established correctly.
6. The inverter activates relay K3, which activates the remote input of the
external grid and system protection unit via an NC contact. This prevents a
connection to the public grid when voltage is restored in the grid.
7. The NO contact of relay K3 gives additional feedback to the inverter on
whether the locking was successfully performed by relay K3.
8. The inverter decides based on the contactors’ feedback as well as the
measurement on the inverter terminals and the Smart Meter that backup power
mode can be started.
9. The inverter starts backup power mode after a defined checking period. 10.
All loads in the backup power circuits are supplied with power. The remaining
loads are not supplied with power and are safely isolated.
46
EN
Transitioning from backup power mode to feeding energy into the grid
1. The inverter is operating in backup power mode. The contactors K1 and K2
to the public grid are open.
2. Public grid available again. 3. The Fronius Smart Meter monitors the grid
parameters on the public grid
and passes this information to the inverter.
4. The stability of the returned public grid is determined by checking the
measured values of the Fronius Smart Meter.
5. On the basis of adjustments that have been carried out, the inverter ends
backup power mode and disconnects the outputs.
6. The inverter deactivates K3. Power is restored to contactors K1, K2, K4
and K5.
7. All circuits are reconnected to the public grid and are supplied by the
grid. The inverter does not feed anything into the grid at this time.
8. The inverter can start feeding energy into the grid again after performing
the grid checks required by the relevant standard.
47
48
Installation
49
50
EN
General
Quick-lock system
A quick-lock system (3) is used to mount the connection area cover and front
cover. The system is opened and closed with a half-rotation (180°) of the
captive screw (1) into the quicklock spring (2).
The system is independent of torque.
NOTE!
Danger when using a drill driver. This may result in the destruction of the
quick-lock system due to overtorque.
Use a screwdriver (TX20). Do not turn the screws more than 180°.
Warning notices on the device
Technical data, warning notices and safety symbols are affixed to the inverter. These warning notices and safety symbols must not be removed or painted over. They warn against incorrect operation which can lead to serious injury and damage.
51
A 4-digit number (coded production date) is printed on the rating plate at the
very bottom, from which the production date can be calculated. If you subtract
the value 11 from the first two digits, you get the production year. The last
two digits stand for the calendar week in which the device was produced.
Example: Value on rating plate = 3205 32 – 11 = 21 Production year 2021 05 =
Calendar week 05
Symbols on the rating plate: CE mark confirms compliance with applicable EU
directives and regulations. UKCA mark confirms compliance with applicable UK
directives and regulations. WEEE mark waste electrical and electronic
equipment must be collected separately and recycled in an environmentally
sound manner in accordance with the European Directive and national law. RCM
mark tested in accordance with the requirements of Australia and New
Zealand. ICASA mark tested in accordance with the requirements of the
Independent Communications Authority of South Africa. CMIM mark tested in
accordance with IMANOR requirements for import regulations and compliance with
Moroccan standards.
Safety symbols: Risk of serious injury and property damage due to incorrect
operation.
Do not use the functions described here until you have fully read and
understood the following documents: – These Operating Instructions. – All
Operating Instructions for the system components of the
photovoltaic system, especially the safety rules.
Dangerous electrical voltage.
52
EN
Allow the capacitors of the inverter to discharge (2 minutes).
Warning notice text:
WARNING! An electric shock can be fatal. Before opening the device, it must be
disconnected and de-energized at the input and output.
System component compatibility
All installed components in the photovoltaic system must be compatible and have the necessary configuration options. The installed components must not restrict or negatively influence the functioning of the photovoltaic system.
CAUTION!
Risk due to components in the photovoltaic system that are not compatible
and/or have limited compatibility. Incompatible components may limit and/or
negatively affect the operation and/or functioning of the photovoltaic system.
Only install components recommended by the manufacturer in the photovoltaic
system.
Before installation, check the compatibility of components not expressly
recommended with the manufacturer.
53
Installation location and position
Choosing the location of the inverter
Please note the following criteria when choosing a location for the inverter:
200 mm ( 7.87 inch)
225 mm ( 8.86 inch)
200 mm ( 7.87 inch)
250 mm ( 9.84 inch)
270 mm
150 mm
( 10.63 inch) ( 5.91 inch)
440 mm ( 17.32 inch)
100 mm ( 3.94 inch)
-40°C – +60°C -40°F – +140°F
0 – 100%
Only install on a solid, non-flammable surface.
Max. ambient temperatures: -40 °C – +60 °C -40 °F – +140 °F
Relative humidity: 0 – 100%
If the inverter is installed in a switch cabinet or similar enclosed space,
ensure sufficient heat dissipation with forced-air ventilation.
For detailed information on the dimensions of the inverter, see chapter
Fronius Primo GEN24 3 – 6 kW on page 195.
When installing the inverter on the outer walls of cattle sheds, it is important to maintain a minimum clearance of 2 m between the inverter and the ventilation and building openings on all sides.
The following substrates are permissible for installation:
– Walls (corrugated metal walls [mounting rails], brick walls, concrete walls,
or other non-flammable surfaces sufficiently capable of bearing loads)
– Poles (installed using mounting rails, behind the solar modules directly on
the PV mounting system)
– Flat roofs (if this is for a film roof, make sure that the films comply with
the fire protection requirements and are not highly flammable. Ensure
compliance with the national provisions.)
– Covered car park roofs (no overhead installation)
The inverter is suitable for indoor installation.
The inverter is suitable for outdoor installation. Because of its IP 66
protection class, the inverter is resistant to water jets from any direction
and can also be used in damp environments.
54
EN
In order to minimise the heating up of the inverter, do not expose it to direct insolation. The inverter should be installed in a protected location, for example, below the PV modules or under an overhanging roof.
IMPORTANT! The inverter must not be installed or used at altitudes above 4000
m.
Do not install the inverter in: – Areas where it may be exposed to ammonia,
corrosive gases,
acids or salts (e.g. fertiliser storage areas, vent openings for livestock
stables, chemical plants, tanneries, etc.)
During certain operating phases the inverter may produce a slight noise. For
this reason it should not be installed in an occupied living area.
Do not install the inverter in: – Areas where there is an increased risk of
accidents from
farm animals (horses, cattle, sheep, pigs, etc.) – Stables or adjoining areas
– Storage areas for hay, straw, chaff, animal feed, fertilizers,
etc.
The inverter is essentially designed to be dustproof (IP 66). In areas of high
dust accumulation, dust deposits may collect on the cooling surfaces, and thus
impair the thermal performance. Regular cleaning is required in this case, see
chapter Operation in dusty environments on page 151. 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 viticul-
ture products – Areas used in the preparation of grain, green fodder or an-
imal feeds
Choosing the location of thirdparty batteries
IMPORTANT! Refer to the manufacturer’s documents for the suitable location for third-party batteries.
55
Explanation of symbols for the installation position
The inverter is suitable for vertical installation on a vertical wall or
column.
The inverter is suitable for installation on a sloping surface (min. slope to
underside 10°).
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.
56
EN
Do not install the inverter on the ceiling. 57
Install the mounting bracket and hang up the inverter
Selecting the fixing material
Use the corresponding fixing materials depending on the subsurface and observe the screw dimension recommendations for the mounting bracket. The installer is responsible for selecting the right type of fixing.
Properties of the mounting bracket
The mounting bracket (illustration) can also be used as a guide.
The pre-drilled holes on the mounting bracket are intended for screws with a
thread diameter of 6-8 mm (0.24-0.32 inches). The distance from the left to
the right pre-drilled hole is 406 mm (16 inches).
Unevenness on the mounting surface (such as coarse-textured plaster) is
largely compensated by the mounting bracket.
Do not deform the mounting bracket
NOTE!
When fitting the mounting bracket to the wall or column, ensure that the
mounting bracket does not become deformed. A deformed mounting bracket may
make it difficult to clip/swivel the inverter into position.
Fitting the mounting bracket to a wall
IMPORTANT! When installing the mounting bracket, make sure that it is installed with the arrow pointing upwards.
58
EN
1
2
3
Installing the mounting bracket on a mast or beam
When installing the inverter on a mast or beam, Fronius recommends using the
“Pole clamp” (order no. SZ 2584.000) mounting kit from Rittal GmbH. The “Pole
clamp” kit covers the following dimensions: – Rectangular mast or beam with a
side length of 50-150 mm (1.97-5.91 inches) – Round mast or beam with a
diameter of 40-190 mm (1.57-7.48 inches)
59
Attaching the mounting bracket to mounting rails
Attaching the inverter to the mounting bracket
1
60
IMPORTANT! The mounting bracket must be affixed at a minimum of four points.
There are integrated grips on the side of the inverter which facilitate
lifting/ attaching.
Clip the inverter into the mounting bracket from above. The connections must
point downwards. The lower area of the inverter is pushed into the snap-in
tabs until the inverter audibly clicks into place on both sides. Check that
the inverter is correctly positioned on both sides.
Prerequisites for connecting the inverter
EN
Permitted cables Cables with the following design can be connected to the
terminals of the inverter:
– Copper: round, solid – Copper: round, fine-stranded, up to conductor class 4
Grid connections with push-in terminal*
Select a sufficiently large cable cross section based on the actual device output!
Power categories
Solid
Multi-stranded
Fine-stranded
Fine-stranded with ferrules- with/without collar
36 kW (3-pin)
2.510 mm2 AWG 148
2.510 mm2 AWG 148
2.510 mm2 AWG 148
2.56 mm2 AWG 1410
Grid connections backup power with push-in terminal*
Select a sufficiently large cable cross section based on the actual device output.
Power categories
Solid
Multi-stranded
Fine-stranded
Fine-stranded with ferrules- with/without collar
36 kW (3-pin)
1.510 mm2 AWG 168
1.510 mm2 AWG 168
1.510 mm2 AWG 168
1.56 mm2 AWG 1610
PV/BAT connections with push-in terminal**
Select a sufficiently large cable cross section based on the actual device output.
Power categories
Solid
Multi-stranded
Fine-stranded
Fine-stranded with ferrules- with/without collar
3-6 kW (2 x 5-pin)
410 mm2 AWG 128
410 mm2 AWG 128
410 mm2 AWG 128
46 mm2 AWG 1210
Ground electrode terminal (6-pin)
Select a sufficiently large cable cross section based on the actual device output.
Number of pins
Solid
Multi-stranded
Fine-stranded
Fine-stranded with ferrules- with/without collar
2
2.516 mm2 AWG 146
2.516 mm2 AWG 146
2.516 mm2 AWG 146
2.516 mm2 AWG 146
4
2.510 mm2
2.510 mm2
2.510 mm2
AWG 148
AWG 148
AWG 148
2.510 mm2 AWG 148
According to product standard IEC 62109, the ground conductor must
correspond to the phase cross-section for phase cross-sections 16 mm²;
for phase cross-sections >16 mm², it must correspond to at least 16 mm².
** The cable cross section must be dimensioned in accordance with the in-
stallation situation and the specifications of the battery manufacturer.
61
Permitted cables for the data communication area
Cables with the following design can be connected to the terminals of the
inverter:
– Copper: round, solid
– Copper: round, fine-stranded
IMPORTANT! Connect the individual conductors to an appropriate ferrule if several individual conductors are connected to one input of the push-in terminals.
WSD connections with push-in terminal
Distance max.
Stripping length
Solid
Fine-stranded
100 m 10 mm 109 yd 0.39 inch
0.14 1.5 mm2 AWG 26-16
0.14 1.5 mm2 AWG 26-16
Fine-stranded with fer-
rules with collar
0.14-1 mm2 AWG 26-18
Fine-stranded with ferrules without
collar
0.14 1.5 mm2 AWG 26-16
Cable recommenda-
tion
min. CAT 5 UTP (unshielded twisted
pair)
Modbus connections with push-in terminal
Distance max.
Stripping length
Solid
Fine-stranded
300 m 10 mm 328 yd 0.39 inch
0.14 1.5 mm2 AWG 26-16
0.14 1.5 mm2 AWG 26-16
Fine-stranded with fer-
rules with collar
Fine-stranded with ferrules without
collar
0.14-1 mm2 AWG 26-18
0.14 1.5 mm2 AWG 26-16
Cable recommenda-
tion
min. CAT 5 STP (shielded twisted
pair)
IO connections with push-in terminal
Distance max.
Stripping length
Solid
Fine-stranded
30 m 32 yd
10 mm 0.39 inch
0.14 1.5 mm2 AWG 26-16
0.14 1.5 mm2 AWG 26-16
Fine-stranded with fer-
rules with collar
0.14-1 mm2 AWG 26-18
Fine-stranded with ferrules without
collar
0.14 1.5 mm2 AWG 26-16
Cable recommenda-
tion
Single conductor pos-
sible
LAN connections
Fronius recommends using at least CAT 5 STP (shielded twisted pair) cables and
a maximum distance of 100 m (109 yd).
Cross section of the AC cable
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): cable diameter from
11-21 mm
62
EN
(with a cable diameter of less than 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 device M32 x 1.5 KB 1825.
Cross section of the DC cable
Cable diameter for the strain-relief device: max. 9 mm. Cable diameter for the
connection to the push-in terminal: max. 7 mm
IMPORTANT! For double-insulated cables with a cable diameter over 7 mm, the
outer layer of insulation must be removed to connect to the push-in terminal.
Maximum alternating current fuse protection
NOTE!
National regulations, the grid operator’s specifications or other factors may
require a residual current circuit breaker in the AC connection lead. For this
situation, a type A residual current circuit breaker is generally adequate.
Nevertheless, false alarms can be triggered for the type A residual current
circuit breaker in individual cases and depending on local conditions. For
this reason, in accordance with national legislation, Fronius recommends that
a residual current circuit breaker with a tripping current of at least 100 mA
suitable for frequency converters be used.
IMPORTANT! The inverter can be fused with max. an automatic circuit breaker C
63 A.
63
Inverter
Fronius Primo GEN24 3.0 kW Fronius Primo GEN24 3.6 kW Fronius Primo GEN24 4.0
kW Fronius Primo GEN24 4.6 kW Fronius Primo GEN24 5.0 kW Fronius Primo GEN24
6.0 kW
Phase AC out-
s
put
1
3000 W
1
3680 W
1
4000 W
1
4600 W
1
5000 W
1
6000 W
Maximum fuse rating
C 63 A
Recommended fuse rating
C 32 A
C 63 A
C 32 A
C 63 A
C 40 A
C 63 A
C 40 A
C 63 A
C 40 A
C 63 A
C 40 A
64
EN
Connecting the inverter to the public grid (AC side)
Safety
WARNING!
Danger due to incorrect operation and incorrectly performed work. This can
result in serious injury and damage to property.
Read the Installation and Operating Instructions before installing and
commissioning the equipment.
Only qualified personnel are authorised to commission your inverter and only
within the scope of the respective technical regulations.
WARNING!
Danger due to grid voltage and DC voltage from solar modules that are exposed
to light. An electric shock can be fatal.
Prior to any connection work, disconnect the inverter on the AC side and the
DC side.
Only an authorised electrical engineer is permitted to connect this equipment
to the public grid.
WARNING!
Danger due to damaged and/or contaminated terminals. This can result in
serious injury and damage to property.
Before making any connections, check the terminals for damage and
contamination.
Remove contamination in the de-energized state. Have defective terminals
repaired by an authorised specialist.
IMPORTANT! National standards and guidelines regarding load unbalance must be
taken into account. The inverter does not have a communication link and does
not automatically disconnect from the grid when the load unbalance is
exceeded.
If the inverter is installed in Australia or New Zealand (required standard:
AS/ NZS4777.2:2020), the inverter must not be used as part of a three-phase
combination, as there is no communication link between the inverters.
Connecting the inverter to the public grid (AC side)
NOTE!
The neutral conductor must be connected in order to operate the inverter. It
is not possible to operate the inverter in unearthed grids, such as IT grids
(insulated grids without ground conductor).
Make sure that the grid’s neutral conductor is grounded.
IMPORTANT! The 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 by making it somewhat longer and by laying it in a loop.
65
1 2 3 4
66
Turn off the automatic circuit breaker.
Make sure that the DC disconnector is in the “Off” switch setting. Loosen the
five screws of the connection area cover by rotating them 180° to the left
using a screwdriver (TX20). Remove the connection area cover from the device.
Guide the mains cable from below through the strain-relief device on the right
side. Remove the AC terminal.
IMPORTANT! The ground conductor must be connected with a loop so that if the
strainrelief device fails, the ground conductor is disconnected last. For more
information on the strain-relief device, see chapter Cross section of the AC
cable on page 62.
Strip the insulation of the single conductors by 12 mm. Select the cable cross
section in accordance with the instructions in Permitted cables from page 61.
Lift to open the terminal’s operating lever and insert the stripped single
conductor into the slot provided as far as it will go. Then close the
terminal’s operating lever until it engages.
NOTE! Only one conductor may be connected to each pin. The AC cables can be
connected to the AC terminals without ferrules.
EN
5
L1 Phase conductor
N
Neutral conductor
PE Ground conductor
6
Insert the AC terminal into the AC slot
until it engages. Fasten the cap nut of
the strain-relief device with a torque of
6-7 Nm.
67
Connecting solar module strings to the inverter
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 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 solar modules must be observed. – Exact values for sizing the solar
modules can be obtained using suitable calculation tools, such as the Fronius
Solar.creator.
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.
IMPORTANT! The solar modules connected to the inverter must comply with the
IEC 61730 Class A standard.
IMPORTANT! Solar module strings must not be earthed.
Safety
WARNING!
Incorrect operation or poorly executed work can cause serious injury or
damage. Commissioning as well as maintenance and service work in the power
module of the inverter must only be carried out by service personnel trained
by Fronius and only within the scope of the respective technical regulations.
Read the Installation and Operating Instructions before installing and
commissioning the equipment.
68
EN
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 the AC and DC side of the inverter are de-energised before
carrying out any connection/maintenance or service tasks.
Only an authorised electrical engineer is permitted to connect this equipment
to the public grid.
WARNING!
Danger due to damaged and/or contaminated terminals. This can result in
serious injury and damage to property.
Before making any connections, check the terminals for damage and
contamination.
Remove contamination in the de-energized state. Have defective terminals
repaired by an authorised specialist.
PV generator general information
2 independent PV inputs (PV 1 and PV 2) are available. These can be connected
to a different number of modules.
When using for the first time, set up the PV generator according to the
respective configuration (also possible later in the “System configuration”
menu under the “Components” menu item).
PV generator configuration 3 6 kW
IMPORTANT! The installation must be carried out in accordance with the
nationally applicable standards and directives. If the arc detection
integrated in the inverter is used for the requirement according to IEC 63027
for arc detection, the solar module strings must not be combined upstream of
the inverter.
MPPT settings: PV 1: ON PV 2: OFF
Total current (Idcmax) less than 22 A
69
MPPT settings: PV 1: ON PV 2: OFF PV 1 + PV 2 (connected in parallel): ON
IMPORTANT! Splitting the total current (Idcmax) by bridging from PV 1 to PV 2
at the terminal is permitted up to 34 A.
Combined solar module strings with total current (Idcmax) greater than or equal to 22 A
Connecting the
1
solar module
strings to the in-
verter
2
1
2
–
Push the DC cables through the DC bushings by hand.
IMPORTANT! Before stripping the insulation, push the cables through the DC
bushings to prevent individual wires being bent or broken.
70
EN
3
2 1
–
4
5
Select the cable cross section in ac-
cordance with the instructions in Per-
mitted cables from page 61.
Strip the insulation of the single con-
ductors by 12 mm. Lift to open the ter-
minal’s operating lever and insert the
stripped single conductor into the slot
provided, in each case as far as it will
go. Then close the operating lever until
it engages.
NOTE!
No multi-wire connections are possible with this terminal type. Only one
conductor may be connected to each pin. The DC cables can be connected to the
DC terminals without ferrules.
71
6
–
PV1 PV1 PV2 PV2 BAT + ++++
7
BAT PV2 PV2 PV1 PV1 —–
8
1
+-
+ / –
Use a suitable measuring instrument to check the voltage and polarity of the
DC cabling. Remove both DC terminals from the slots.
CAUTION!
Danger due to polarity reversal at the terminals. This may result in severe
damage to the inverter.
Use a suitable measuring instrument to check the polarity of the DC cabling.
Use a suitable measuring instrument to check the voltage (max. 600 VDC)
72
EN
9
Insert the DC terminals into the re-
spective slot until they engage. Fasten
the screws of the cable guide to the
housing using a screwdriver (TX20) and
a torque of 1.3-1.5 Nm.
NOTE!
Do not use a drill driver as this could cause overturning. A possible
consequence of overturning is, for example, damaging the strain-relief device.
73
Connecting the battery to the inverter
Safety
WARNING!
Incorrect operation or poorly executed work can cause serious injury or
damage. Commissioning as well as maintenance and service work on the inverter
and battery must only be carried out by service personnel trained by the
respective inverter or battery manufacturer and only within the scope of the
respective technical regulations. Read the Installation and Operating
Instructions provided by the respective manufacturer 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 and from batteries.
Ensure that the AC and DC side of the inverter and the battery are de-
energised before carrying out any connection/maintenance or service tasks.
Only an authorised electrical engineer is permitted to connect this equipment
to the public grid.
WARNING!
Danger due to damaged and/or contaminated terminals. This can result in
serious injury and damage to property.
Before making any connections, check the terminals for damage and
contamination.
Remove contamination in the de-energized state. Have defective terminals
repaired by an authorised specialist.
Connecting the battery on the DC side
CAUTION!
Risk due to operation of the battery above the permissible altitude as
specified by the manufacturer. Operating the battery above the permissible
altitude can result in restricted operation, failure of the operation, and
unsafe states of the battery.
Adhere to the manufacturer’s instructions regarding the permissible altitude.
Operate the battery only at the altitude specified by the manufacturer.
IMPORTANT! Prior to installing a battery, ensure that the battery is switched off. The max. DC cable length for the installation of external batteries must be taken into account according to the manufacturer’s specifications, see chapter Suitable batteries on page 26 .
74
EN
1
Manually push the battery cables
through the DC bushings.
- When connecting a battery from the manufacturer BYD, the ground conductor of the battery must be connected externally (e.g. switch cabinet). Observe the minimum cross section of the ground conductor to the battery.
IMPORTANT! Before stripping the insulation, push the cables through the DC bushings to prevent individual wires being bent or broken.
2
3
Route the battery ground conductor in
the integrated cable duct of the con-
nection area divider into the AC con-
nection area.
75
4
Select the cable cross section in ac-
cordance with the instructions in Per-
mitted cables from page 61.
Strip the insulation of the single con-
ductors by 12 mm. Lift to open the ter-
minal’s operating lever and insert the
stripped single conductor into the slot
provided, in each case as far as it will
go. Then close the operating lever until
it engages.
NOTE!
No multi-wire connections are possible with this terminal type. Only one
conductor may be connected to each pin. The DC cables can be connected to the
DC terminals without ferrules.
5
Fasten the battery ground conductor
to the second input of the ground
electrode terminal from above using a
screwdriver (TX20) and a torque of
1.8-2 Nm.
6
76
EN
7
CAUTION!
Risk due to overvoltage when using other slots on the terminal. This may
result in damage to the battery and/or the solar module due to discharge.
Only use the slots marked BAT for battery connection.
8
CAUTION!
Danger due to polarity reversal at the
terminals.
Serious substantive damage to the PV
system may result.
Use a suitable measuring instrument to check the polarity of the
DC cabling when the battery is
switched on.
The maximum voltage for the battery input must not be exceeded
(see Technical data on page 158).
9
Insert the DC terminals into the re-
spective slot until they engage.
77
10
Fasten the screws of the cable guide to
the housing using a screwdriver (TX20)
and a torque of 1.3-1.5 Nm.
NOTE!
Do not use a drill driver as this could cause overturning. A possible
consequence of overturning is, for example, damaging the strain-relief device.
IMPORTANT! Information for connection on the battery side can be found in the Installation Instructions from the relevant manufacturer.
78
EN
Connecting backup power – PV Point (OP)
Safety
IMPORTANT! The valid national laws, standards and provisions, as well as the
specifications of the relevant grid operator are to be taken into account and
applied. It is highly recommended that the specific installation be agreed
with the grid operator and explicitly approved by this operator. This
obligation applies to system constructors in particular (e.g. installers).
NOTE!
The continuous supply via the PV Point depends on the available PV power. If
the solar modules are not supplying enough power, interruptions may occur.
Do not connect any loads that require an interruption-free supply.
WARNING!
Danger from incorrect installation, commissioning, operation or incorrect use.
This can result in severe personal injury/damage to property.
Only trained and qualified personnel are authorised to install and commission
the system, and only within the scope of the technical regulations.
The Installation and Operating Instructions must be read carefully prior to
use.
If anything is unclear, contact your vendor immediately.
WARNING!
Danger due to damaged and/or contaminated terminals. This can result in
serious injury and damage to property.
Before making any connections, check the terminals for damage and
contamination.
Remove contamination in the de-energized state. Have defective terminals
repaired by an authorised specialist.
Installation
NOTE!
All loads that have to be supplied via the OP terminal must be protected by
means of a residual current circuit breaker. In order to ensure the residual
current circuit breaker operates properly, a connection must be established
between the neutral conductor N´ (OP) and the earth.
For the Circuit Diagram recommended by Fronius, see Circuit Diagram – PV Point
(OP) on page 181.
79
1
Switch off the automatic circuit break-
er and DC disconnector.
2
Make sure that the DC disconnector is
in the “Off” switch setting.
Loosen the five screws of the connec-
tion area cover by rotating them 180°
to the left using a screwdriver (TX20).
Remove the connection area cover
from the device.
CAUTION!
Danger from faulty or incorrect holes. This may lead to injuries to the eyes
and hands as a result of flying debris and sharp edges, as well as damage to
the inverter.
When drilling, wear suitable protective goggles. Only use a step drill when
drilling. Ensure that nothing is damaged inside the device (for example
connection
block).
Adapt the diameter of the hole to match the corresponding connection. Deburr
the holes using a suitable tool. Remove the drilling residues from the
inverter.
80
EN
3
Drill out the optional cable guide with
a step drill.
4
Insert the strain-relief device into the
hole and secure to the torque specified
by the manufacturer.
5
Guide the mains cable through the
strain-relief device from below.
Remove the OP terminal.
81
6
Strip the insulation of the single con-
ductors by 12 mm.
The cable cross section must be
between 1.5 mm2 and 10 mm2. Lift to
open the terminal’s operating lever and
insert the stripped single conductor in-
to the slot provided, all the way up to
the stop. Then close the operating
lever until it engages.
NOTE!
Only one conductor may be connected to each pin. The conductors can be
connected without ferrules.
7
L1´ Phase conductor
N´ Neutral conductor
N´ PEN conductor
NOTE!
The PEN conductor must be produced with ends that are permanently marked blue,
according to the national provisions, and have a cross section of 10 mm².
8
Fasten the ground conductor and PEN
conductor to the ground electrode ter-
minal using a screwdriver (TX20) and a
torque of 1.8-2 Nm.
82
EN
9
Insert the OP terminal into the OP slot
until it engages. Tighten the cap nut of
the strain-relief device to the torque
specified by the manufacturer.
83
Connecting backup power – Full Backup
Safety
The examples given in this document (in particular cabling variants and
Circuit Diagrams) are suggestions only. These examples have been carefully
developed and tested. They can therefore be used as a basis for real-life
installation. Anyone following or using these examples does so at their own
risk.
IMPORTANT! The valid national laws, standards and provisions, as well as the
specifications of the relevant grid operator are to be taken into account and
applied. It is highly recommended to coordinate the concrete examples
implemented and in particular the specific installation with the grid operator
to obtain their explicit approval. This obligation applies to system
constructors in particular (e.g. installers). The examples suggested here show
a backup power supply with or without an external protection relay (external
grid and system protection unit). Whether an external protection relay must be
used or not is the decision of the respective grid operator.
IMPORTANT! No uninterruptible power supply (UPS) must be operated in the
backup power circuit. The Installation and Operating Instructions must be read
carefully prior to use. If anything is unclear, contact your vendor
immediately.
WARNING!
Danger from incorrect installation, commissioning, operation or incorrect use.
This can result in severe personal injury/damage to property.
Only trained and qualified personnel are authorised to install and commission
the system, and only within the scope of the technical regulations.
The Installation and Operating Instructions must be read carefully prior to
use.
If anything is unclear, contact your vendor immediately.
Cabling variants including backup power circuits with 1-pin separation e.g. Austria or Australia
Circuit Diagram The Circuit Diagram for the 1-pin double separation – e.g.
Austria, can be found in the appendix to this document on page 185. The
Circuit Diagram for the 1-pin single separation – e.g. Australia, can be found
in the appendix to this document on page 186.
Cabling of backup power circuit and non-backup power circuits
If not all the loads in the home need to be supplied in a backup power situation, the circuits need to be divided into backup power circuits and non- backup power circuits. The total load of the backup power circuits must not exceed the nominal output of the inverter.
The backup power circuits and non-backup power circuits must be fused separately according to the required safety measures (residual current circuit breaker, automatic circuit breaker, etc.). In backup power mode, only the backup power circuits are disconnected from the grid by contactors K1 and K2, 1-pin. The rest of the home network is not supplied with power in this case.
84
EN
The following points regarding cabling must be considered: – The main contacts
of contactors K1 and K2 must be installed between the
Fronius Smart Meter and the inverter and the residual current circuit breaker
of the backup power circuits. – The supply voltage for contactors K1 and K2 is
provided by the public grid and must be connected to phase 1 (L1) after the
Fronius Smart Meter and fused accordingly. – An NC contact for the relay K3
interrupts the supply voltage to contactors K1 and K2. This prevents the
backup power network of the inverter from being switched to the public grid. –
The NO contact of relay K3 gives feedback to the inverter on whether the
locking was successfully performed by relay K3. – Additional inverters or
other AC sources can be installed in the backup power circuit after the main
contacts of K1 and K2. The sources are not synchronised to the network of the
inverter because this backup power network has a frequency of 53 Hz. – The use
of contactor K2 is optional in Australia.
All-pin separation cabling variant e.g. Germany, France, Spain
Circuit Diagram The Circuit Diagram for the 2-pin double separation – e.g.
Germany, can be found in the appendix to this document on page 187. The
Circuit Diagram for the 2-pin single separation – e.g. France and Spain, can
be found in the appendix to this document on page 188.
Cabling of backup power circuit and non-backup power circuits
If not all the loads in the home need to be supplied in a backup power situation, the circuits need to be divided into backup power circuits and non- backup power circuits. The total load of the backup power circuits must not exceed the nominal output of the inverter.
The backup power circuits and non-backup power circuits must be fused separately according to the required safety measures (residual current circuit breaker, automatic circuit breaker, etc.). In backup power mode, only the backup power circuits are disconnected at all pins from the grid by contactors K1 and K2; an earth connection is only established for these circuits. The rest of the home network is not supplied with power in this case.
85
The following points regarding cabling must be considered: – The main contacts
of contactors K1 and K2 must be installed between the
Fronius Smart Meter and the residual current circuit breaker of the inverter
and the residual current circuit breaker of the backup power circuits. – The
supply voltage for contactors K1 and K2 is provided by the public grid and
must be connected to phase 1 (L1) after the Fronius Smart Meter and fused
accordingly. – To ensure residual current circuit breakers function in backup
power mode, the connection between the neutral conductor and the ground
conductor must be established as close as possible to the inverter, but in any
case before the first residual current circuit breaker. An NC contact is used
for this purpose for each of the main contacts of contactors K4 and K5. This
ensures that the ground connection is established as soon as the public grid
connection is no longer available. – As with contactor K1, the supply voltage
for contactors K4 and K5 is provided via phase 1 (L1) of the public grid. – An
NC contact for the relay K3 interrupts the supply voltage to contactors K1,
K2, K4 and K5. This prevents the ground connection from being immediately
disconnected again when power returns to the public grid and the backup power
network of the inverter from being switched to the public grid. – The NO
contact of relay K3 gives feedback to the inverter on whether the locking was
successfully performed by relay K3. – The use of contactor K2 is optional in
France and Spain. – Additional inverters or other AC sources can be installed
in the backup power circuit after the main contacts of K1 and K2. The sources
are not synchronised to the network of the inverter because this backup power
network has a frequency of 53 Hz.
All-pin separation cabling variant, e.g. UK
Circuit Diagram The Circuit Diagram for the 2-pin double separation – e.g.UK,
can be found in the appendix to this document on page 189.
Cabling of backup power circuit and non-backup power circuits
If not all the loads in the home need to be supplied in a backup power situation, the circuits need to be divided into backup power circuits and non- backup power circuits. The total load of the backup power circuits must not exceed the nominal output of the inverter.
The backup power circuits and non-backup power circuits must be fused separately according to the required safety measures (residual current circuit breaker, automatic circuit breaker, etc.). In backup power mode, only the backup power circuits are disconnected at all pins from the grid by contactors K1 and K2; an earth connection is only established for these circuits. The rest of the home network is not supplied with power in this case.
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The following points regarding cabling must be considered: – The main contacts
of contactors K1 and K2 must be installed between the
Fronius Smart Meter and the residual current circuit breaker of the inverter
and the residual current circuit breaker of the backup power circuits. – The
supply voltage for contactors K1 and K2 is provided by the public grid and
must be connected to phase 1 (L1) after the Fronius Smart Meter and fused
accordingly. – To ensure residual current circuit breakers function in backup
power mode, the connection between the neutral conductor and the ground
conductor must be established as close as possible to the inverter, but in any
case before the first residual current circuit breaker. An NC contact is used
for this purpose for each of the main contacts of contactors K4 and K5. This
ensures that the ground connection is established as soon as the public grid
connection is no longer available. – As with contactor K1, the supply voltage
for contactors K4 and K5 is provided via phase 1 (L1) of the public grid. – An
NC contact for the relay K3 interrupts the supply voltage to contactors K1,
K2, K4 and K5. This prevents the ground connection from being immediately
disconnected again when power returns to the public grid and the backup power
network of the inverter from being switched to the public grid. – The NO
contact of relay K3 gives feedback to the inverter on whether the locking was
successfully performed by relay K3. – Additional inverters or other AC sources
can be installed in the backup power circuit after the main contacts of K1 and
K2. The sources are not synchronised to the network of the inverter because
this backup power network has a frequency of 53 Hz. – A Fronius Smart Meter
with current transformer is required (e.g. Fronius Smart Meter 50kA-3 or
Fronius Smart Meter TS 5kA-3).
All-pin separation cabling variant, e.g. Italy
Circuit Diagram The Circuit Diagram for the 2-pin double separation with ext.
grid and system protection – e.g. Italy, can be found in the appendix to this
document on page 190.
Backup power circuit and non-backup power circuits
IMPORTANT! Fronius Smart Meter US-240 must be used for these circuit variants.
The backup power circuits and non-backup power circuits must be fused separately according to the required safety measures (residual current circuit breaker, automatic circuit breaker, etc.). In backup power mode, only the backup power circuits are disconnected from the grid by contactors K1 and K2; an earth connection is only established for these circuits. The rest of the home network is not supplied with power in this case.
87
The following points regarding cabling must be considered: – The main contacts
of contactors K1 and K2 must be installed between the
Fronius Smart Meter and the residual current circuit breaker of the inverter
and the residual current circuit breaker of the backup power circuits. – The
supply voltage for contactors K1 and K2 is provided by the public grid and
must be connected to phase 1 (L1) after the Fronius Smart Meter and fused
accordingly. – Actuation of contactors K1 and K2 is carried out by the
external grid and system protection unit. – The external grid and system
protection unit must be installed after the Fronius Smart Meter. Precise
installation and wiring instructions for the external grid and system
protection unit can be found in its separate Operating Instructions. – The
remote trip input of the external grid and system protection unit must be set
to NC according to the manufacturer’s Operating Instructions. – To ensure
residual current circuit breakers function in backup power mode, the
connection between the neutral conductor and the ground conductor must be
established as close as possible to the inverter, but in any case before the
first residual current circuit breaker. An NC contact is used for this purpose
for the main contacts of contactors K4 and K5. This ensures that the ground
connection is established as soon as the public grid connection is no longer
available. – The supply voltage for contactors K1, K2, K4 and K5 is provided
via phase 1 (L1) of the public grid and is switched via the external grid and
system protection unit. – An NC contact for relay K3, which activates the
remote input of the external grid and system protection unit, interrupts the
supply voltage to contactors K1, K2, K4 and K5. This prevents the ground
connection from being immediately disconnected again when power returns to the
public grid and the backup power network of the inverter from being switched
to the public grid. – The NO contact of relay K3 gives additional feedback to
the inverter on whether the locking was successfully performed by relay K3. –
Additional inverters or other AC sources can be installed in the backup power
circuit after the main contacts of K1 and K2. The sources are not synchronised
to the network of the inverter because this backup power network has a
frequency of 53 Hz.
Testing backup power mode
Backup power mode should be tested once it has been installed and set up for
the first time. A battery state of charge of over 30% is recommended when in
test mode.
A description on how to run test mode can be found in the backup power
checklist (https://www.fronius.com/en/search-page, item number: 42,0426,0365).
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Connecting the data communication cable
Modbus participants
The inputs M0 and M1 can be selected for this purpose. A maximum of 4 Modbus
participants can be connected to the Modbus terminal on inputs M0 and M1.
IMPORTANT! Only one primary meter, one battery and one Ohmpilot can be
connected per inverter. Due to the high data transfer of the battery, the
battery occupies 2 participants. If the “Inverter control via Modbus” function
is activated in the “Communication””Modbus” menu, no Modbus participants are
possible. It is not possible to send and receive data at the same time.
Example 1:
Input
Battery
Fronius Ohmpilot
Quantity Primary
meter
0
Quantity Secondary
meter
4
0
2
0
1
1
3
Modbus 1 (M1) Modbus 0 (M0)
Example 2:
Input
Battery
Fronius Ohmpilot
Quantity Primary
meter
Quantity Secondary
meter
1
3
0
4
0
2
0
1
Modbus 1 (M1) Modbus 0 (M0)
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Routing data communication cables
IMPORTANT! If data communication cables are wired into the inverter, observe
the following points: – Depending on the number and cross section of the wired
data communica-
tion cables, remove the corresponding blanking plugs from the sealing insert
and insert the data communication cables. – Make sure that you insert the
corresponding blanking plugs into any free openings on the sealing insert.
IMPORTANT! Should the blanking plugs be missing or improperly fitted, then
safety class IP66 cannot be guaranteed.
1
Undo the strain-relief device cap nut
and push out the sealing ring and the
blanking plug from the inside of the
device.
2
Open up the sealing ring at the loca-
tion where the blanking plug is to be
removed.
- Liberate the blanking plug by moving it sideways.
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EN
3
Guide the data cables first through the
strain-relief device cap nut and then
through the housing opening.
4
Insert the sealing ring between the cap
nut and the housing opening. Press the
data cables into the seal’s cable guide.
Then press in the seal until it reaches
the underside of the strain-relief
device.
5
Fasten the cap nut of the strain-relief
device with a torque of min. 2.5 – max.
4 Nm.
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Connecting the
1
battery commu-
nication cables
Strip 10 mm from the single conductors and mount the ferrules if necessary.
IMPORTANT! Connect the individual conductors to an appropriate ferrule if
several individual conductors are connected to one input of the push-in
terminals.
2
Insert the cable into the respective
slot and check the cable is securely re-
tained.
IMPORTANT! Use only twisted pairs for connecting “Data +/-” and “Enable +/-“, see section Permitted cables for the data communication area on page 62.
Twist the cable shield and insert into the “SHIELD” slot.
IMPORTANT! Improperly fitted shielding can cause data communication problems.
For the wiring proposal recommended by Fronius, see page 182.
Terminating resistors
It may be possible for the system to function without terminating resistors.
However, owing to interference, the use of terminating resistors according to
the following overview is recommended for trouble-free functioning.
For permissible cable and max. distances for the data communication range see
chapter Permitted cables for the data communication area on page 62.
IMPORTANT! Terminating resistors that are not positioned as illustrated can
result in interference in the data communication.
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EN
OPTION 1
Manufacturer manual
Modbus 1 0
1
Modbus 0 0
1
Manufacturer manual
0
0
1
6 7
Modbus 0 / 1 (min. CAT 5)
-+
Modbus 0 / 1 (min. CAT 5)
OPTION 2
M0 / M1
0
1
Manufacturer manual
Manufacturer manual
0
0
1
6 7
-+
Modbus 0 / 1
Modbus 0 / 1
(min. CAT 5)
(min. CAT 5)
OPTION 3
M0 / M1
0
1
Manufacturer manual
Manufacturer manual
–
Modbus 0 / 1 (min. CAT 5)
0 0 1 67
Modbus 0 / 1
(min. CAT 5)
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Installing the WSD (wired shutdown)
IMPORTANT! The push-in WSD terminal in the inverter’s connection area is delivered with a bypass ex works as standard. The bypass must be removed when installing a trigger device or a WSD chain.
The WSD switch of the first inverter with connected trigger device in the WSD
chain must be in position 1 (primary device). The WSD switch of all other
inverters should be in the 0 (secondary device) position.
Max. distance between two devices: 100 m Max. number of devices: 28
IN (+) IN (-)
OUT (+) OUT (-)
IN (+) IN (-)
OUT (+) OUT (-)
IN (+) IN (-)
OUT (+) OUT (-)
CAT 5/6/7
- Floating contact of the trigger device (e.g. central grid and system protection). If several floating contacts are used in a WSD chain, they must be connected in series.
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EN
Closing and commissioning the inverter
Closing the inverter’s connection area/housing cover, and commissioning
NOTE!
The housing cover is fitted with a lock for safety reasons, which allows the
housing cover on the inverter to be pivoted only when the DC disconnector is
switched off.
Only clip and pivot the housing cover onto the inverter when the DC
disconnector is switched off.
Do not use excessive force to clip in and pivot the housing cover.
1
Place the cover on the connection
area. Tighten the five screws by rotat-
ing them 180° to the right in the indic-
ated order using a screwdriver (TX20).
2
Clip the housing cover onto the invert-
er from above.
Press on the lower part of the housing
cover and tighten the two screws 180°
to the right using a Torx screwdriver
(TX20).
Turn the DC disconnector to the “On”
switch position. Switch on the auto-
matic circuit breaker. For systems with
a battery, observe the switch-on se-
quence according to chapter Suitable
batteries on page 26.
IMPORTANT! Open WLAN access point with the optical sensor, see chapter Button functions and LED status indicator on page 96
Starting the inverter for the first time
When using the inverter for the first time, various setup settings must be
configured.
If the setup process is cancelled before the process is complete, any data
that has been input up to this point is lost and the start screen with the
installation wizard is shown again. If the process is interrupted, such as in
the event of a power outage, the data is saved. Commissioning may be continued
from the point at which the process was interrupted once the power supply has
been restored. If the setup was interrupted, the inverter feeds energy into
the grid at maximum 500 W and the operating status LED flashes yellow.
95
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 installer / Technical Support team.
Button functions and LED status indicator
1x WLAN access point 2x WPS 3-6 sec. Quit Service Message
Ok Standby Uncritical Error (flashing)
Critical Error
Connected Connecting (flashing)
Network Error
The status of the inverter is shown via the operating status LED. In the event
of faults, carry out the individual steps in the Fronius Solar.start app.
The optical sensor is actuated by touching with a finger.
The status of the connection is shown via the communication LED. To establish
the connection, carry out the individual steps in the Fronius Solar.start app.
Sensor functions
1x = WLAN access point (AP) is opened.
Flashing blue 2x = WLAN Protected Setup (WPS) is activated.
Flashing green 3 seconds (max. 6 seconds) = the service message is terminated.
Lights up yellow
LED status indicator The inverter is operating correctly.
Lights up green The inverter starts.
Flashing green The inverter is in standby, is not operational (e.g. no feed-in
at night) or is not configured.
Lights up yellow The inverter indicates a non-critical status.
Flashing yellow
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EN
LED status indicator The inverter indicates a critical status and there is no
grid power feed process.
Lights up red The inverter indicates a back-up power overload.
Flashing red The network connection is being established via WPS. 2x = WPS
search mode.
Flashing green The network connection is being established via WLAN AP. 1x =
WLAN AP search mode (active for 30 minutes).
Flashing blue The network connection is not configured.
Lights up yellow The inverter is operating correctly, a network fault is
indicated.
Lights up red The inverter is performing an update.
/ Flashing blue
Installation with the app
The “Fronius Solar.start” app is needed for this installation method. Depending on the end device with which the installation will be carried out, download the app for the respective platform.
Fronius Solar.start
1
Setup your PV system in a few minutes.
START INSTALLATION
LOGIN
Log in with your Fronius credentials (email adress & password) in order to get the most out of the PV System. Installing a new product does not require a Login.
Imprint & Contact
Data Privacy
Terms & Conditions
2
open access point
1 Start the installation in the app. 2 Select the product to which the connection should be established.
97
3 Open the access point by touching the sensor once Communication LED: flashes
blue.
4 Follow and complete the installation wizard in the individual sections. 5
Add system components in Solar.web and start up the PV system.
The network wizard and the product setup can be carried out independently of
each other. A network connection is required for the Solar.web installation
wizard.
Installation using the web browser
WLAN:
1
open access point
FRONIUS_PILOTxxx
Secured
2
Password:
12345678
192.168.250.181
1 Open the access point by touching the sensor once Communication LED: flashes
blue.
2 Establish the connection to the inverter in the network settings (the
inverter is displayed with the name “FRONIUS_PILOT” and the serial number of
the device).
3 Password: enter 12345678 and confirm. IMPORTANT! To enter the password on a
Windows 10 operating system, the link “Connect using a security key instead”
must first be activated to establish a connection with the password: 12345678.
4 In the browser address bar, enter and confirm the IP address
192.168.250.181. The installation wizard is opened.
5 Follow the installation wizard in the individual sections and complete the
installation.
6 Add system components in Solar.web and start up the PV system.
The network wizard and the product setup can be carried out independently of
each other. A network connection is required for the Solar.web installation
wizard.
Ethernet:
1
2
open access point
169.254.0.180
1 Establish a connection to the inverter (LAN1) with a network cable (CAT5 STP
or higher).
2 Open the access point by touching the sensor once Communication LED: flashes
blue.
3 In the browser address bar, enter and confirm IP address 169.254.0.180. The
installation wizard is opened.
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EN
4 Follow the installation wizard in the individual sections and complete the
installation.
5 Add system components in Solar.web and start up the PV system. The network
wizard and the product setup can be carried out independently of each other. A
network connection is required for the Solar.web installation wizard.
99
Switching off current supply and restarting the inverter
De-energising
1
the inverter and
switching it on
again
1. Turn off the automatic circuit breaker.
2. Turn the DC disconnector to the “Off” switch position.
To start up the inverter again, follow the steps listed above in reverse
order.
100
Settings – user interface of the inverter
101
102
EN
User settings
User login
1 Open the user interface of the inverter in your browser. 2 In the “Login”
menu, log in using your user name and password, or go to the
“User” menu and click on the “User login” button and then log in with your
user name and password.
IMPORTANT! Depending on the user’s authorization, settings can be executed in
the individual menus.
Selecting the language
1 In the “User” menu, click on the “Language” button and select the desired language.
103
Device configuration
Components
Select “Add component+” to add all available components to the system.
PV generator Activate the MPP tracker and enter the connected PV power in the
associated field. For combined solar module strings, “PV 1 + PV 2 connected in
parallel” must be activated.
Battery If the SoC mode is set to “Automatic”, the values “Minimum SoC” and
“Maximum SoC” are preset according to the technical specifications of the
battery manufacturer.
If the SoC mode is set to “Manual”, the values “Minimum SoC” and “Maximum SoC”
may be changed after consultation with the battery manufacturer within the
scope of their technical specifications. In the event of a power outage, the
set values are not taken into account.
Using the “Allow battery charging from additional producers in home network”
setting, charging of the battery from other external producers is enabled/
disabled.
Using the “Allow battery charging from public grid” setting, charging of the
battery from the public grid is enabled/disabled. The normative or feed-in
tariff rules must be taken into account with this setting. The setting does
not affect the charging of the battery by other producers within the home. It
merely relates to the process of drawing charging energy from the public grid.
Regardless of this setting, any charging from the public grid that is required
for service reasons (e.g. necessary re-charging to protect against deep
discharge) is still performed.
IMPORTANT! Fronius accepts no liability for damage to third-party batteries.
Primary meter To ensure smooth operation in conjunction with other energy
producers and in Full Backup backup power mode, it is important to install the
Fronius Smart Meter at the feed-in point. The inverter and other producers
must be connected to the public grid via the Fronius Smart Meter. This setting
also affects the behaviour of the inverter at night. If the function is
deactivated, the inverter switches to Standby mode as soon as there is no more
PV power available, provided that no energy management command is sent to the
battery (e.g. minimum state of charge reached). The message “Power low” is
displayed. The inverter restarts as soon as an energy management command is
sent or sufficient PV power is available. If the function is activated, the
inverter remains permanently connected to the grid so that energy can be drawn
from other producers at any time. After connecting the meter, the position
must be configured. A different Modbus address needs to be set for each Smart
Meter. The Watt value on the generator meter is the sum of all generator
meters. The Watt value on the consumption meter is the value of all secondary
meters.
Ohmpilot All Ohmpilots available in the system are displayed. Select the
desired Ohmpilot and add it to the system via “Add”.
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Functions and I/Os
Backup power “Off”, “PV Point” or “Full Backup” can be selected for backup
power mode. Full Backup can only be activated once the required I/O
assignments have been configured for backup power. In addition, a meter must
be mounted and configured at the feed-in point for Full Backup backup power
mode.
IMPORTANT! When configuring “PV Point” backup power mode, the information in
chapter Safety on page 79 must be observed. When configuring “Full Backup”
backup power mode, the information in chapter Safety on page 84 must be
observed.
Backup power nominal voltage When backup power mode is activated, the nominal
voltage of the public grid must be selected.
State of charge warning limit A warning is output when the residual capacity
of the battery specified here is reached in backup power mode.
Reserve capacity The set value results in a residual capacity (depending on
the capacity of the battery) that is reserved for backup power. The battery is
not discharged below the residual capacity in grid-connected operation. In
backup power mode, the manually set value “Minimum SoC” is not taken into
account. If there is a power outage, the battery is always discharged down to
the automatically preset minimum SoC in accordance with the technical
specifications of the battery manufacturer.
Load management Up to four pins can be selected for load management here.
Additional load management settings are available in the “Load management”
menu item. Default: Pin 1
Australia – Demand Response Mode (DRM) The pins for control via DRM can be set
here:
Mode Description
Information
DRM pin I/O pin
DRM0 Inverter disconnects DRM0 occurs if there is REF GEN IO4
itself from the grid an interruption or short
COM
IO5
circuit on the REF GEN
LOAD
or COM LOAD leads, or if
the combinations DRM1
– DRM8 are invalid.
The mains relays open.
DRM1 Import Pnom 0%
currently not supported DRM 1/5 IN6
without disconnec-
tion from the grid
DRM2 Import Pnom 50% currently not supported DRM 2/6 IN7
DRM3 Import Pnom 75% currently not supported DRM 3/7 IN8 & +Qrel* 0%
DRM4 Import Pnom 100% currently not supported DRM 4/8 IN9
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Mode Description
Information
DRM pin I/O pin
DRM5 Export Pnom 0%
currently not supported DRM 1/5 IN6
without disconnec-
tion from the grid
DRM6 Export Pnom 50% currently not supported DRM 2/6 IN7
DRM7 Export Pnom 75% & currently not supported DRM 3/7 IN8 -Qrel* 0%
DRM8 Export Pnom 100% currently not supported DRM 4/8 IN9
The percentages always refer to the nominal device output.
IMPORTANT! If the Demand Response Mode (DRM) function is enabled and no DRM control is connected, the inverter switches to Standby mode.
Demand Response Modes (DRM)
Here you can enter a value for the apparent power input and the apparent power output for the Australia country setup.
Inverter
“Enforce Standby” When the function is activated, the feed-in mode of the
inverter is interrupted. This enables a powerless shutdown of the inverter and
protects its components. When the inverter is restarted, the standby function
is automatically deactivated.
“PV 1” and “PV 2”
Parameter “Mode”
Range of values
Off
Auto
Fix
“UDC fix”
80 530 V
“Dynamic Peak Off
Manager”
On
Description
The MPP tracker is deactivated.
The inverter uses the voltage at which the max. possible power of the MPP
tracker is possible.
The MPP tracker uses the voltage defined in the “UDC fix”.
The inverter uses the fixed preset voltage used at the MPP tracker.
The function is deactivated.
The entire solar module string is checked for optimisation potential and
determines the best possible voltage for feed-in mode.
“Ripple Control” Ripple control signals are signals sent out by the energy company to switch controllable loads on and off. Depending on the installation situation, ripple control
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EN
signals may be attenuated or amplified by the inverter. The settings below can be used to counteract this if necessary.
Parameter
“Reduction of Influence”
“Frequency of Ripple Control Signal” “Grid Inductance”
Range of values Off On 100 3000 Hz
Description
The function is deactivated. The function is activated. The frequency
specified by the energy company must be entered here.
0.00001 0.00 The value measured at the feed-in point
5 H
must be entered here.
“Measure against RCD false triggers” (when using a 30 mA residual current circuit breaker)
NOTE!
National regulations, the grid operator’s specifications or other factors may
require a residual current circuit breaker in the AC connection lead. For this
situation, a type A residual-current circuit breaker is generally adequate.
Nevertheless, false alarms can be triggered for the type A residual current
circuit breaker in individual cases and depending on local conditions. For
this reason, in accordance with national legislation, Fronius recommends that
a residual current circuit breaker with a tripping current of at least 100 mA
suitable for frequency converters be used.
Parameter
“Switch-Off before 30mA RCD Trip” (only for Primo GEN24)
“Leakage Current Factor” (only for Symo GEN24)
Range of values 0 1
0 0.25 (default: 0.16)
Description
No measures to prevent false tripping. The inverter switches off at 15 mA
before the residual current circuit breaker trips.
Reducing the setting value reduces the leakage current and raises the
intermediate circuit voltage, which slightly reduces the efficiency. Setting
value 0.16 enables optimum efficiency.
“Iso Warning”
Parameter “Iso Warning”
Range of values
Off
On
Description
The isolation warning is deactivated. The isolation warning is activated. A
warning is issued in the event of an isolation fault.
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Parameter
“Iso Alternative Mode”
Range of values
Accurate
Fast
“Isolation Warn- 100,000 ing Threshold” 10,000,000
Description
Isolation monitoring is performed with the highest accuracy and the measured
insulation resistance is displayed on the user interface of the inverter.
Isolation monitoring is performed with lower accuracy, which shortens the
duration of the isolation measurement, and the isolation value is not
displayed on the user interface of the inverter.
If this threshold is undershot, status code 1083 is displayed on the user
interface of the inverter.
“Backup Power”
Parameter
Range of values
“Backup Nomin- 220 240 V al Voltage”
“Backup Undervoltage Protection Limit U< [pu]”
0 2%V
“Backup Undervoltage Protection Time U<”
“Backup Overvoltage Protection Limit U> [pu]”
0.04 20 s 0 2%V
“Backup Overvoltage Protection Time U>”
0.04 20 s
“Backup Restart 0 600 s Delay”
“Backup Restart 1 10 Attempts”
“Backup Extern- Off
al Frequency Check”
On
(Italy only)
Description
Is the nominal phase voltage output in backup power mode.
The setting value is used to set the limit value for switching off backup
power mode, e. g. setting value 0.9 = 90% of the nominal voltage.
Triggering time for falling below the backup power undervoltage protection
limit value.
The setting value is used to set the limit value for switching off backup
power mode, e. g. setting value 1.1 = 110% of the nominal voltage.
Triggering time for exceeding the backup power overvoltage protection limit
value.
Is the waiting time for resumption of backup power mode after a shutdown.
Is the max. number of automatic restart attempts. When the max. number of
automatic restart attempts is reached, the service message 1177 must be
acknowledged manually.
The function is deactivated
For backup power mode (Full Backup) in Italy, the external frequency check
must be activated. Before ending backup power mode, the grid frequency is
checked. When the grid frequency is in the allowed limit range, the loads are
connected to the public grid.
108
EN
Parameter
“Backup Short Circuit Trip Time”
Range of values
0.001 60 s
Description
If a short circuit occurs in backup power mode, this mode is interrupted
within the set time.
109
Energy management
Energy management
“Self-Consumption Optimization” Set the operating mode to “Manual” or
“Automatic”. The inverter always regulates to the set “Target Value at Feed-In
Point”. In the “Automatic” operating mode (factory setting), an adjustment is
made to 0 W at the feed-in point (maximum self-consumption).
The “Target Value at Feed-In Point” also applies if a further source feeds
into this Smart Meter. However, in this case: – The Fronius Smart Meter must
be installed and configured at the feed-in
point. – The “Allow battery charging from additional producers in home
network”
function must be activated in the “Components” “Battery” menu area.
“Target Value at Feed-In Point” If “Manual” has been selected under Self-
Consumption Optimization, the “Operating Mode” (“Consumption” / “Feed-In”) and
the “Target Value at Feed-In Point” can be set.
IMPORTANT! “Self-Consumption Optimization” has lower priority than “Battery
Management”.
External producers (only possible with active battery) If further
decentralised producers are installed in the house, and these are incorporated
into the self-consumption regulation of the Fronius Hybrid inverter, the
setting “Allow battery charging from additional producers in home network”
must be activated in the menu area “Device Configuration” “Components” (see
chapter Components on page 104. This means that energy can be drawn from the
household network and fed into the battery via the Fronius GEN24 Plus
inverter. You can restrict how much power is consumed by the Fronius GEN24
Plus inverter by specifying the maximum AC power (AC max.). A maximum power
consumption of the AC nominal capacity of the Fronius GEN24 Plus inverter is
possible.
“Battery Management” Using the time-dependent battery control, it is possible
to prevent or restrict charging/discharging of the battery and to specify a
defined charging power.
Battery management is influenced by the following settings, for example: –
Permitted battery charging from the public grid – Power limitation of the
inverter, energy storage device or overall system – Control specifications via
Modbus – Self-consumption optimization
IMPORTANT! The defined rules for battery control have the second lowest
priority after SelfConsumption Optimization. Depending on the configuration,
the rules may not be satisfied due to other settings.
110
EN
The following values can be selected for the rules of the time-dependent
battery control: – “Max charging power”
The battery is charged with the value set in the input field “Power” at most.
– “Min charging power”
The battery is charged with the value set in the input field “Power” at
minimum. – “Max discharge power” The battery is discharged with the value set
in the input field “Power” at most. – “Min discharge power” The battery is
discharged with the value set in the input field “Power” at minimum.
The timing, when the rule applies, is set in the “Time” input fields and by
selecting from the “Weekdays”.
It is not possible to define a time window over midnight (00:00). Example: Two
entries are needed to set a regulation from 22:00 to 06:00: “22:00 – 23:59”
and “00:00 – 06:00”.
Examples Time-dependent battery control
The examples below serve to explain the energy flows. Efficiency levels are not taken into account.
Example: Battery system PV system available power Power into the battery Power
output (AC) of the inverter Target value set at feed-in point Infeed into the
public grid Consumption in home
1000 W
1000 W 500 W 500 W 0 W 0 W 500 W
500 W
0 W
TARGET: 0W
0 0 1 67
-+ 500 W
500 W
Example: Battery system without photovoltaics, including second producer in the house
Power into the battery
1500 W
Power consumption (AC) of the inverter
1500 W
111
Example: Battery system without photovoltaics, including second producer in the house
Second producer in home network
2000 W
Target value set at feed-in point
0 W
Infeed into the public grid
0 W
Consumption in home
500 W
2000 W
1500 W
0 W
TARGET: 0W
0 0 1 67
-+ 1500 W
Example: Battery system including second producer in the house
PV system available power
Power into the battery
Power consumption (AC) of the inverter
Second producer in home network
Target value set at feed-in point
Infeed into the public grid
Consumption in home
1000 W
2000 W
1500 W
TARGET: 0W
0 0 1 67
500 W
1000 W 2500 W 1500 W 2000 W
0 W 0 W 500 W
0 W
-+ 2500 W
500 W
112
EN
Example: Battery system including second producer in the house (with AC max. limitation)
PV system available power
1000 W
Power into the battery
2000 W
Power consumption AC max. limited to
1000 W
Power consumption (AC) of the inverter
1000 W
Second producer in home network
2000 W
Target value set at feed-in point
0 W
Infeed into the public grid
500 W
Consumption in home
500 W
1000 W
2000 W
AC MAX: 1000 W 1000 W
TARGET: 0W
0 0 1 67
500 W
-+ 2000 W
500 W
Allowed battery control rules
A rule always consists of a restriction or parameter and the time control
“Time” and “Weekdays” while the rule is active. Rules with the same
restriction (e.g. max. charging power) must not overlap in time.
Max. charging and discharging limits The max. charging and max. discharging
power can be configured at the same time.
Limit discharge power
Max. discharge power 2000 W
0 W
Max. charging power 2000 W
1. Max. charging power 2000 W 00:00 23:59 Mo Tu We Th Fr Sa Su 2. Max. discharging power 2000 W 00:00 23:59 Mo Tu We Th Fr Sa Su
Limit charging power
113
Specifying the charging range It is possible to define a charging range with a min. and max. charging limit. In this case, it is not possible for the battery to discharge.
Limit discharge power
0 W
Min. charging power 500 W
Max. charging power 3800 W
Limit charging power
1. Min. charging power 500 W 03:00 04:00 Mo Tu We Th Fr Sa Su
2. Max. charging power 3800 W 03:00 04:00 Mo Tu We Th Fr Sa Su
Specifying the discharging range It is possible to define a discharging range
with a min. and max. discharging limit. In this case, it is not possible for
the battery to charge.
Limit discharge power
Max. discharge power 3000 W
0 W
Min. discharge power 1000 W
Limit charging power
1. Max. discharging power 3000 W 13:00 14:00 Mo Tu We Th Fr Sa Su
2. Min. discharging power 1000 W 00:00 23:59 Mo Tu We Th Fr Sa Su
Specifying a defined charging power A defined charging power can be specified
by setting the min. and max. charging power to the same value.
Limit discharge power
0 W
Min./Max. charging power 3000 W
Limit charging power
1. Min. charging power 3000 W 03:00 04:00 Mo Tu We Th Fr Sa Su 2. Max. charging power 3000 W 03:00 04:00 Mo Tu We Th Fr Sa Su
114
Specifying a defined discharging power A defined discharging power can be specified by setting the min. and max. discharging power to the same value.
EN
Limit discharge power
Min./Max. discharging power 3000 W
0 W
Limit charging power
1. Min. discharging power 3000 W 13:00 14:00 Mo Tu We Th Fr Sa Su
2. Max. discharging power 3000 W 13:00 14:00 Mo Tu We Th Fr Sa Su
Possible applications – Time-dependent electricity tariffs – Battery
reservation for market-specific power limitation – Time-dependent storage
reservation for a backup power situation
PV power reduction
The rules in the “Battery Management” menu area enable optimum use of the energy generated. Situations may arise, however, in which PV power cannot be used in full due to the time-dependent battery control.
Example Fronius inverter (max. output power) Defined battery discharging PV power
6000 W 6000 W 1000 W
In this case, the inverter would have to reduce the PV power to 0 W, since the output power of the inverter is max
References
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- Installation guide: Fronius GEN24 Plus - Solar Energy - Fronius International
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- fronius.com/~/downloads/Solar%20Energy/Software/SE_SW_GEN24_Power_Management_1_Relays_Mode.fpc
- fronius.com/~/downloads/Solar%20Energy/Software/SE_SW_GEN24_Power_Management_2_Relays_Mode.fpc
- fronius.com/~/downloads/Solar%20Energy/Software/SE_SW_GEN24_Power_Management_3_Relays_Mode.fpc
- fronius.com/~/downloads/Solar%20Energy/Software/SE_SW_GEN24_Power_Management_4_Relays_Mode.fpc
- Fronius Solar.web - PV-Anlagen-Monitoring für Installateure
- Suchen & Finden - Fronius
- Fronius International
- Search & Find - Fronius
- Search & Find - Fronius
- Service & Support - Fronius Solar Energy
- Tech support area for installers - Solar Energy - Fronius International
- Fronius Solar.web
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