FRO­NIUS Symo Series User manual

Operating
instructions
Fronius Symo
10.0-3 208-240
12.0-3 208-240
10.0-3 480
12.5-3 480
15.0-3 480
15.0-3 208
17.5-3 480
20.0-3 480
22.7-3 480
24.0-3 480
42,0410,2124 022-05052022
EN-US Operating instructions
FR Instructions de service
ES Manual de instrucciones

Table of contents
Safety rules 5
Explanation of safety instructions 5
General 5
Environmental conditions 6
Qualified personnel 6
Data Regarding Noise Emission Values 6
EMC measures 6
Safety symbols 7
Disposal 7
Data backup 7
Copyright 7
General 8
Device concept 8
Software version 8
Intended Use 9
Information on ‘Field-adjustable trip points’ and ‘Advanced Grid Features’ 9
FCC / RSS Compliance 9
Insulation Monitor/Interruption, Insulation Monitoring 10
Arc detection/interruption 10
Warning notices on the device 10
String fuses 11
Criteria for the Proper Selection of String Fuses 12
Data Communication and Fronius Solar Net 13
Fronius Solar Net and data interface 13
Data Communication Area 13
Explanation of Multifunctional Power Interface 14
'Fronius Solar Net' LED description 15
Example 16
Fronius Datamanager 2.0 17
Controls, Connections, and Indicators on the Fronius Datamanager 2.0 17
Fronius Datamanager at night or when insufficient DC voltage is available 20
Safety 20
Installing Inverters with Fronius Datamanager 2.0 in Fronius Solar Net 20
Starting for the first time 21
More Detailed Information on Fronius Datamanager 2.0 23
Keys and symbols 24
Keys and Symbols 24
Display 25
Navigation in the Menu Level 26
Activate the display illumination 26
Automatic Deactivation of Display Illumination / Switching to the "NOW" Display Mode 26
Access the menu level 26
Values Displayed in the NOW Menu 27
Values Displayed in the LOG Menu 27
The SETUP menu item 29
Presetting 29
Software Updates 29
Navigation in the SETUP Menu 29
General Menu Item Settings 30
Application Example: Setting the Feed-In Tariff 30
Menu Items in the Setup Menu 32
Standby 32
WLAN Access Point 32
DATCOM 33
USB 33
Relay (Floating Switch Contact) 35
Energy Manager(in the Relay Menu) 36
Time/Date 37
Display Settings 38
Energy yield 39
3
EN-US

Fan 40
Arc Detection 40
The INFO menu item 41
Measured values 41
LT Status 41
Grid Status 41
Device information 41
Version 43
Switching the key lock on and off 44
General 44
Switching the Key Lock On and Off 44
USB Stick as a Data Logger and for Updating Inverter Software 45
USB Thumb Drive as a Data Logger 45
Suitable USB Thumb Drives 45
USB thumb drive for updating inverter software 46
Removing the USB Stick 46
The Basic menu 47
Accessing the Basic Menu 47
Basic Menu Entries 47
Status Diagnosis and Troubleshooting 49
Displaying status codes 49
Total Failure of the Display 49
Status codes in the e-Manual 49
Customer service 49
Operation in dusty environments 49
Technical data 50
Explanation of footnotes 58
Relevant standards and directives 59
RCMU 59
Terms and conditions of warranty and disposal 60
Fronius manufacturer's warranty 60
Disposal 60
4

Safety rules
Explanation of
safety instruc-
tions
WARNING!
Indicates a potentially dangerous situation.
▶Death or serious injury may result if appropriate precautions are not taken.
CAUTION!
Indicates a potentially harmful situation.
▶Minor injury or damage to property may result if appropriate precautions are
not taken.
NOTE!
Indicates a possibility of flawed work results and possible damage to the equip-
ment.
Please pay special attention when one of the symbols from the "Safety rules"
chapter appears in these instructions.
General The device has been manufactured using state-of-the-art technology and ac-
cording to recognized safety standards. If used incorrectly or misused, however,
it can cause
-serious or fatal injury to the operator or a third party,
-and damage to the device and other material assets belonging to the operat-
ing company.
All persons involved in start-up operation, maintenance and servicing of the
device must
-be suitably qualified,
-have knowledge of and experience in dealing with electrical installations and
-have fully read and precisely followed these Operating Instructions.
The Operating Instructions must always be kept on hand wherever the device is
being used. In addition to the Operating Instructions, all applicable local rules
and regulations regarding accident prevention and environmental protection
must also be followed.
All safety and danger notices on the device
-must be kept in a legible state
-must not be damaged/marked
-must not be removed
-must not be covered, pasted, or painted over.
The terminals can reach high temperatures.
Only operate the device when all protection devices are fully functional. If the
protection devices are not fully functional, there is a risk of
-serious or fatal injury to the operator or a third party,
-and damage to the device and other material assets belonging to the operat-
ing company.
Any safety devices that are not functioning properly must be repaired by an au-
thorized specialist before the device is switched on.
5
EN-US

Never bypass or disable protection devices.
For the location of the safety and danger notices on the device, refer to the sec-
tion headed “General” in the Operating Instructions for the device.
Any equipment malfunctions which might impair safety must be remedied imme-
diately before the device is turned on.
Your personal safety is at stake!
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 liab-
ility for any damage resulting from improper use.
Qualified per-
sonnel
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 di-
mensioned. Loose connections, scorched, damaged, or under-dimensioned
cables and leads must be repaired immediately by an authorized specialist.
Maintenance and repair work must only be carried out by an authorized special-
ist.
It is impossible to guarantee that externally (aka, third-party) procured 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 stand-
ard 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.
Data Regarding
Noise Emission
Values
The cooling of the device takes place via an electronic temperature
control system at the lowest possible noise level and depends on the
power used, ambient temperature and the soiling level 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 influ-
enced by the installation situation, the power quality, the surround-
ing 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.
6

Safety symbols Devices marked with the CSA test mark satisfy the requirements of the relevant
standards for Canada and the USA.
Disposal Dispose of in accordance with the applicable national and local regulations.
Data backup The user is responsible for backing up 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.
Text and illustrations were accurate at the time of printing. Fronius reserves 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 Operating Instructions, we will be most grateful for your com-
ments.
7
EN-US

General
Device concept Unit design:
(1) Housing cover
(2) Inverter
(3) Mounting bracket
(4) Connection area including DC
main switch
(5) Data Communication Area
(6) Data communication cover
The inverter transforms the direct cur-
rent generated by the solar modules
into alternating current. This alternat-
ing current is fed into the public grid
and synchronized with the mains
voltage in use.
The inverter has been designed exclusively for use in grid-connected photovoltaic
systems. It cannot generate electric power independently of the grid.
The inverter automatically monitors the public grid. Whenever conditions in the
electric grid are inconsistent with standard conditions (e.g., grid switch-off, inter-
ruption), your inverter will immediately stop operating and interrupt the supply of
power into the grid.
The grid is monitored by monitoring the voltage, monitoring the frequency and
monitoring islanding conditions.
The inverter is fully automatic. The inverter starts monitoring the grid as soon as
the solar modules are generating enough energy after sunrise. The inverter re-
sumes the grid power feed operation when there is sufficient direct sunlight.
The control system of the inverter ensures that the maximum possible power
output is drawn from the solar modules at all times.
As soon as there is no longer sufficient energy available for the grid power feed
operation, the inverter shuts down the power electronics connection to the grid
completely and stops operating. All settings and recorded data are saved.
When its temperature gets too high, the inverter automatically reduces the cur-
rent output power in order to protect itself.
Reasons for the temperature being too high include a high ambient temperature
or insufficient heat dissipation (e.g., inadequate heat dissipation when installed in
switch cabinets).
Software version The features described in these instructions are valid from the following software
version: fro28500.upd
Minor deviations from the described features are possible in newer or older soft-
ware versions.
8

Intended Use The inverter is designed exclusively to convert direct current from solar modules
into alternating current and feed this power into the public grid.
The following are deemed to be not in conformity with its intended purpose:
-Utilization for any other purpose, or in any other manner
-Alternations to the inverter are not expressly recommended by Fronius
-Installation of components that are not expressly recommended or sold by
Fronius.
The manufacturer is not responsible for any damage resulting from improper use.
All warranty claims are considered void in such cases.
Proper use also means
-carefully reading and obeying the instructions and all the safety and danger
notices in the Operating and Installation Instructions
-compliance with the maintenance operations
-installation as specified in the Installation Instructions
When configuring the photovoltaic system, make sure that all components are
operating completely within their permitted operating range.
All measures recommended by the solar module manufacturer for maintaining
solar module properties must be followed.
Follow all grid operator regulations regarding grid power feed and connection
methods.
Information on
‘Field-adjustable
trip points’ and
‘Advanced Grid
Features’
The inverter is equipped with ‘Field adjustable trip points’ and ‘Advanced Grid
Features’. For further information, please contact ‘Fronius Technical Support’ at
the following email address: [e-mail].
FCC / RSS Com-
pliance
FCC
This device corresponds to the limit values for a digital device of class B in ac-
cordance with Part 15 of the FCC regulations. The limit values should provide
adequate protection against harmful interference in homes. This device creates
and uses high frequency energy and can interfere with radio communications
when not used in accordance with the instructions. However, there is no guaran-
tee against interference occurring in a particular installation.
If this device interferes with radio or television reception when turning the device
on and off, it is recommended that the user solve this with one or more of the
following measures:
-adjust or reposition the receiving antenna
-increase the distance between the device and the receiver
-connect the device to another circuit, which does not include the receiver
-for further support, please contact the retailer or an experienced radio/TV
technician.
Industry Canada RSS
The device corresponds to the license-free Industry Canada RSS standards. Op-
eration is subject to the following conditions:
(1) The device may not cause harmful interference
(2) The device must accept any interference received, including interference that
may cause undesired operation.
9
EN-US

Insulation Mon-
itor/Interrup-
tion, Insulation
Monitoring
The inverter is equipped with the following safety features as required by UL
1741 and the National Electrical Code:
Insulation monitor (IMI/RCMU)
The IMI (isolation monitor interruptor) feature is performed by the RCMU (resid-
ual current monitoring unit) feature in the inverter. This feature automatically
monitors whether a leakage current exists in the grid power feed operation. The
inverter is disconnected from the grid if a defined leakage current is exceeded.
NOTE!
Automatic reconnection no longer occurs after the device is disconnected from
the grid five times as a result of exceeding the defined leakage current value.
The State Code 607 shown on the display must be acknowledged to reconnect.
Insulation monitoring of ungrounded solar modules
In the case of grid connected photovoltaic systems with ungrounded solar mod-
ules, the inverter checks the insulation resistance between the positive and neg-
ative pole in relation to the earth potential before energy is fed into the grid. The
inverter issues a state code if the insulation resistance is too low. The inverter is
therefore not permitted to start feeding energy into the grid.
Arc detection/
interruption
The inverter is equipped with integrated arc detection/interruption, which de-
tects and extinguishes serial arcs.
For example, a serial arc can occur after the following errors or situations:
-Poorly-connected plug connections on the solar module
-Poor or defective cable connections on the solar module side, which enable a
connection against the earth potential
-Defective solar modules due to problems in the junction box or production
errors, such as high resistance solder connections in individual solar cells
-Cables incorrectly connected to an inverter’s input terminals
If a serial arc is detected, the power is switched off and the grid power feed oper-
ation is interrupted. A state code is shown on the display. The state code on the
display must be manually reset before the grid power feed operation can be re-
sumed.
The power shutdown also extinguishes the serial arc.
NOTE!
This product is equipped with a communication interface in line with the "Com-
munication Signal for Rapid Shutdown - SunSpec Interoperability Specifica-
tion”.
Power optimizers and other MLPE features in the photovoltaic system can impair
the correct functioning of the arc detection/interruption. When using these kinds
of components, the system installer is responsible for ensuring the correct func-
tioning of the arc detection/interruption. Contact your Fronius Technical Sup-
port for more information.
Warning notices
on the device
There are warning notices and safety symbols on the inside and outside of the in-
verter. These warning notices and safety symbols must not be removed or
10