FRO­NIUS Tauro 50-3 User manual

Operating
instructions
Fronius Tauro 50-3
Fronius Tauro ECO 50-3
Fronius Tauro ECO 99-3
Fronius Tauro ECO 100-3
42,0426,0307,EN 020-15042022
EN Operating instructions

Contents
Safety rules 6
Explanation of safety notices 6
General 6
Environmental conditions 7
Qualified personnel 7
Safety measures at the installation location 7
Noise emission values 7
EMC measures 7
Data protection 7
Copyright 8
Protective earthing (PE) 8
General information 9
Description of the device 11
Description of the device 11
AC Daisy Chain 11
String fuses 11
Fronius Solar.web 12
Protection of people and equipment 13
Safety 13
Warning notices and rating plate on the device 13
WSD (wired shutdown) 14
Central grid and system protection 14
RCMU 14
Surge protective device 15
Surge protective device (SPD) 15
Proper use 16
Intended use 16
Regulations governing the photovoltaic system 16
Functional principle 17
Functional principle 17
Cooling of the inverter through forced-air ventilation 17
Power derating 17
Control elements and connections 18
Controls and displays 18
PV connections - Tauro 50-3-D (direct) 18
PV connections - Tauro Eco 50-3-D (direct) 19
PV connections - Tauro Eco 99-3-D / 100-3-D (direct) 19
PV connections - pre-combined 19
Optional DC disconnector lock 20
Mounting option for third-party components 20
Data communication area in the inverter 20
Data communication area 21
Internal schematic connection diagram of the IOs 22
Button functions and LED status indicator 23
Installation and commissioning 25
Installation location and position 27
Choosing the location of the inverter 27
Installation position 28
Transport 30
Crane transport 30
Transporting by counterbalanced lift truck or lift truck 30
Mounting the inverter 31
Selecting the fixing material 31
Mounting bracket dimensions 31
Mounting the inverter on the wall 32
Mounting the inverter on floor racks 33
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EN

Connecting the inverter to the public grid (AC side) 34
Monitoring the grid 34
AC connection area 34
Connecting aluminium cables 35
Permitted cables 35
Maximum alternating current fuse protection 36
Changing the clamping area for V-type terminal 36
Additional PE introduction for earthing 37
Safety 38
Opening the inverter 38
Switching off the AC disconnector option 39
Connecting the inverter to the public grid - Singlecore 39
Connecting the inverter to the public grid - Multicore 40
Connecting the inverter to the public grid - Daisy Chain 42
Connecting cables with a cable lug 43
Connecting the PV cable to the inverter 45
Safety 45
General comments regarding solar modules 46
Permitted cables 46
DC fuse protection - pre-combined 47
Example of Fronius Tauro Eco 50-3-P / 99-3-P / 100-3-P combiner box 48
Example Fronius Tauro 50-3-P combiner box 49
Distribution of the solar module strings for the direct version 49
Connecting PV cables - MC4 connector 50
MC4 connector cover 50
Connecting PV cables - Pre-combined 51
Connecting cables with a cable lug 52
Replacing the string fuses 53
Closing and switching on the inverter 55
Connecting the data communication cable 57
Modbus participants 57
Permitted cables for the data communication area 57
Multiple inverters in one network 58
Routing data communication cables 58
WSD (wired shutdown) 60
Using for the first time 61
Starting the inverter for the first time 61
Fronius system monitoring (Pilot) display 61
Installation with the app 61
Installation using the web browser 62
Switching off current supply and restarting the inverter 63
De-energising the inverter and switching it on again 63
Settings - website of the inverter 65
User settings 67
User login 67
Selecting the language 67
Device configuration 68
Components 68
Functions and IOs 68
"PSC editor - AUS - Demand Response Modes (DRM)" 69
Demand Response Modes (DRM) 69
Inverter 69
System 72
General 72
Update 72
Setup wizard 72
Restoring the factory settings 72
Event Log 72
Information 72
Licence manager 73
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Support 74
Communication 75
Network 75
Modbus 76
Fronius Solar API 77
Safety and grid requirements 78
Feed-in limitation 78
I/O power management 78
Connection diagram - 4 relays 79
I/O power management settings - 4 relays 80
Connection diagram - 3 relays 81
I/O power management settings - 3 relays 82
Connection diagram - 2 relays 83
I/O power management settings - 2 relays 84
Connection diagram - 1 relay 85
I/O power management settings - 1 relay 86
Appendix 87
Status codes and remedy 89
Status Codes 89
Technical data 90
Tauro 50-3-D / 50-3-P 90
Tauro Eco 50-3-D / 50-3-P 92
Tauro Eco 99-3-D / 99-3-P 94
Tauro Eco 100-3-D / 100-3-P 96
Explanation of footnotes 98
Integrated DC disconnector 98
Applicable standards and guidelines 100
CE mark 100
WLAN 100
Power failure 100
Service, warranty terms and conditions and disposal 101
Fronius SOS 101
Fronius manufacturer's warranty 101
Disposal 101
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EN

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.
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 operator
All personnel involved in commissioning and maintenance of the device must:
-Be suitably qualified,
-Have knowledge of and experience in dealing with electrical installations and
-Read and follow these Operating Instructions carefully.
In addition to the Operating Instructions, all applicable local rules and regula-
tions 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
-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 risk of:
-Injury or death to the operator or a third party
-Damage to the device and other material assets belonging to the operator
Any safety devices that are not fully functional must be repaired by an author-
ized 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.
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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 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 inadequately dimensioned
cables and leads must be immediately repaired by authorised personnel.
Repair work must only be carried out by authorised personnel.
It is impossible to guarantee that bought-in parts are designed and manufac-
tured to meet the demands made on them, or that they satisfy safety require-
ments. 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.
Safety measures
at the installa-
tion location
When installing devices with openings for cooling air, ensure that the cooling air
can enter and exit unhindered through the air ducts. Only operate the charger in
accordance with the degree of protection shown on the rating plate.
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 temperat-
ure 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
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.
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.
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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 pur-
chaser. If you have any suggestions for improvement, or can point out any mis-
takes 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 the Tauro inverter,
the PE connection is mandatory as it is a protection class 1 device. When con-
necting the PE conductor, ensure that it is secured against accidental disconnec-
tion. All points listed under "Connecting the inverter to the public grid (AC side)"
must be observed, including the use of washers, screw locks, and nuts with the
defined torque.
It must be ensured that when using the strain-relief devices, the ground con-
ductor is the last to be disconnected in the event of a possible failure. When con-
necting the ground conductor, the minimum cross-section requirements spe-
cified by the respective national regulations must be observed. In addition, the
minimum cross-section of the PE conductor must be at least half of the phase
cross-sections according to the product standard IEC 62109-1, as a cross-sec-
tion of at least 35 mm² (50 kW) or 70 mm² (99.99 / 100 kW) must be used for the
phases (L1 / L2 / L3).
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General information
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