SMA SUNNY ISLAND 4.4M User manual

Operating Manual
SUNNY ISLAND 4.4M / 6.0H / 8.0H
SI44M-80H-12-BE-en-10 | Version 1.0ENGLISH

Legal Provisions
The information contained in these documents is property of SMA Solar Technology AG. Any publication, whether in
whole or in part, requires prior written approval by SMA Solar Technology AG. Internal reproduction used solely for
the purpose of product evaluation or other proper use is allowed and does not require prior approval.
SMA Warranty
You can download the current warranty conditions from the Internet at www.SMA-Solar.com.
Software licenses
The licenses for the used software modules can be called up on the user interface of the product.
Trademarks
All trademarks are recognized, even if not explicitly identified as such. Missing designations do not mean that a
product or brand is not a registered trademark.
Modbus® is a registered trademark of SchneiderElectric and is licensed by the ModbusOrganization,Inc.
QRCode is a registered trademark of DENSOWAVEINCORPORATED.
Phillips® and Pozidriv® are registered trademarks of PhillipsScrewCompany.
Torx® is a registered trademark of AcumentGlobalTechnologies,Inc.
SMA Solar Technology AG
Sonnenallee 1
34266 Niestetal
Germany
Tel. [phone]
Fax [phone]
www.SMA.de
Email: [email protected]
Status: 9/19/2017
Copyright © 2017 SMA Solar Technology AG. All rights reserved.
Legal Provisions SMA Solar Technology AG
Operating ManualSI44M-80H-12-BE-en-102

Table of Contents
1 Information on this Document..................................................................................................... 8
1.1 Validity ............................................................................................................................................................. 8
1.2 Target Group ................................................................................................................................................... 8
1.3 Additional Information..................................................................................................................................... 8
1.4 Symbols............................................................................................................................................................ 8
1.5 Typographies................................................................................................................................................... 9
1.6 Nomenclature.................................................................................................................................................. 9
2 Safety ............................................................................................................................................ 11
2.1 Intended Use.................................................................................................................................................... 11
2.2 Safety Information ........................................................................................................................................... 12
2.3 Battery Safety Information............................................................................................................................... 14
2.4 Battery-Backup System Safety Information .................................................................................................... 16
3 Scope of Delivery ......................................................................................................................... 18
4 Product Description ...................................................................................................................... 20
4.1 Sunny Island..................................................................................................................................................... 20
4.2 Interfaces and Functions.................................................................................................................................. 21
4.3 Control Panel ................................................................................................................................................... 23
4.4 Multifunction Relay.......................................................................................................................................... 24
5 Mounting....................................................................................................................................... 25
5.1 Requirements for Mounting............................................................................................................................. 25
5.2 Mounting the Sunny Island ............................................................................................................................. 27
6 Electrical Connection .................................................................................................................... 30
6.1 Content and Structure of the Section.............................................................................................................. 30
6.2 Overview of the Connection Area.................................................................................................................. 31
6.3 Inserting the Micro SD Card........................................................................................................................... 32
6.4 Connecting the Grounding Conductor with a Grounded Battery................................................................ 32
6.5 Connecting the Components .......................................................................................................................... 33
6.5.1 Connecting the Battery Fuse to the Sunny Island........................................................................................... 33
6.5.2 Connecting the Utility Grid in the System for Increased Self-Consumption.................................................. 34
6.5.3 Connecting an Automatic Transfer Switch in the Battery Backup System .................................................... 36
6.5.3.1 Connecting the AC Power Cables of the Automatic Transfer Switch .......................................................... 36
6.5.3.2 Connecting the Control Cables of the Automatic Transfer Switch............................................................... 37
6.5.3.3 Connecting the Measuring Cables of the Automatic Transfer Switch ......................................................... 38
6.5.4 Connecting the Stand-Alone Grid or Multicluster-Box 6 / 36 ...................................................................... 38
6.5.5 Connection of Multicluster-Box 12 (MC-Box-12.3-20) ................................................................................. 40
6.5.5.1 Connecting the AC Power Cable of the Multicluster-Box 12....................................................................... 40
6.5.5.2 Connecting the Control Cable of the Multicluster-Box 12 ........................................................................... 40
6.5.5.3 Connecting the Measuring Cable of the Multicluster-Box 12...................................................................... 41
6.5.6 Connecting the Generator in an Off-Grid System ......................................................................................... 42
6.5.7 Communication Connection ............................................................................................................................ 43
6.5.7.1 Connecting the Communication Product via Speedwire .............................................................................. 43
6.5.7.2 Connecting the Data Cable of the Lithium-Ion Batteries ............................................................................... 43
6.5.7.3 Connecting the Data Cable for the Internal Communication of the Cluster................................................ 44
6.5.7.4 Connecting the Data Cable of the Multicluster-Box ..................................................................................... 45
6.5.7.5 Connecting Control and Measuring Cables of the Multicluster-Box ........................................................... 45
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6.5.7.6 Connecting the Data Cables for Multicluster Communication..................................................................... 46
6.5.8 Connecting the Battery Temperature Sensor.................................................................................................. 47
6.5.9 Connecting the Battery Current Sensor in the Off-Grid System .................................................................... 48
6.5.10 Connecting the Control Cable for Autostart Generators............................................................................... 50
6.5.11 Connecting a Signaler for Generators Without an Autostart Function......................................................... 51
6.5.12 Connecting Load-Shedding Contactors.......................................................................................................... 52
6.5.13 Connecting the Time Control for External Processes ..................................................................................... 54
6.5.14 Connecting Message Devices for Operating States and Warning Messages............................................ 55
6.5.15 Connecting the Battery Room Fan .................................................................................................................. 56
6.5.16 Connecting the Electrolyte Pump for the Battery............................................................................................ 57
6.5.17 Connecting the Signal Cable of the External Generator Request ................................................................ 58
6.6 Connecting the Cables.................................................................................................................................... 59
6.6.1 Connecting the DC Power Cable.................................................................................................................... 59
6.6.2 Connecting the AC Power Cable.................................................................................................................... 62
6.6.3 Connecting the Grounding Conductor........................................................................................................... 63
6.6.4 Connecting the Data Cable............................................................................................................................. 64
6.6.5 Connecting Relay 1 and Relay 2.................................................................................................................... 65
6.6.6 Connecting BatVtgOut, DigIn, BatTMP and BatCur ...................................................................................... 66
6.6.7 Connecting ExtVtg............................................................................................................................................ 67
6.7 Checking the Wiring ....................................................................................................................................... 68
6.8 Sealing and Closing the Sunny Island ........................................................................................................... 72
6.9 Inserting the Fuse Links in the Fuse Switch-Disconnector............................................................................... 73
7 Commissioning ............................................................................................................................. 74
7.1 Commissioning Procedure............................................................................................................................... 74
7.2 Performing Basic Configuration of the Installation Assistant......................................................................... 75
7.3 Commissioning the Inverter............................................................................................................................. 75
7.4 Configuring the Country Data Set.................................................................................................................. 76
7.5 Changing Thresholds for Systems for Increased Self-Consumption ............................................................. 77
7.6 "Battery Management".................................................................................................................................... 77
7.6.1 Safety When Setting the Battery Management Parameters.......................................................................... 77
7.6.2 Adjusting the Battery Management to the Battery......................................................................................... 77
7.6.3 Changing the Battery Usage Through Battery-Backup Systems without Increased Self-Consumption ...... 78
7.6.4 Battery Usage through Systems for Increased Self-Consumption ................................................................. 80
7.6.4.1 Seasonal Adjustment of the Battery Usage................................................................................................... 80
7.6.4.2 Changing the Battery Usage Through Systems for Increased Self-Consumption Without a Battery
Backup Grid.................................................................................................................................................... 81
7.6.4.3 Changing the Battery Usage through Battery-Backup Systems with Increased Self-Consumption............ 84
7.6.5 Changing the Battery Protection Mode in Off-Grid Systems......................................................................... 88
7.6.6 Configuring the Resistance of the Battery Cable ........................................................................................... 89
7.6.7 Setting the Control of the Battery Room Fan .................................................................................................. 90
7.7 Energy management ....................................................................................................................................... 90
7.7.1 Setting Load Shedding in a Multicluster System ............................................................................................ 90
7.7.2 Setting One-Level Load Shedding................................................................................................................... 91
7.7.3 Setting Two-Level Load Shedding ................................................................................................................... 91
7.7.4 Setting Time-Dependent One-Level Load Shedding....................................................................................... 92
7.7.5 Setting Time-Dependent Two-Level Load Shedding ....................................................................................... 94
7.8 Generator Management................................................................................................................................. 96
7.8.1 Configuration of the Thresholds for Generator Connection.......................................................................... 96
7.8.1.1 Changing the Current Thresholds for the Generator .................................................................................... 96
7.8.1.2 Changing the Voltage Thresholds for the Generator ................................................................................... 97
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7.8.1.3 Changing the Frequency Thresholds of the Generator Voltage .................................................................. 97
7.8.1.4 Changing the Permitted Reverse Power in the Generator............................................................................ 97
7.8.1.5 Configuring the Current Limit for the Generator Depending on the Frequency.......................................... 98
7.8.2 Changing the Type of the Generator Interface.............................................................................................. 99
7.8.3 Configuring Generator Run Times................................................................................................................... 99
7.8.3.1 Changing the Warm-Up Time for the Generator.......................................................................................... 99
7.8.3.2 Changing the Minimum Run Time for the Generator.................................................................................... 99
7.8.3.3 Changing the Power-Down Time for the Generator ..................................................................................... 100
7.8.3.4 Changing the Minimum Stop Time for the Generator .................................................................................. 100
7.8.4 Configuring the Generator Request................................................................................................................100
7.8.4.1 Changing the Automatic Generator Operation............................................................................................ 100
7.8.4.2 Changing a State-Of-Charge-Dependent Generator Request ..................................................................... 100
7.8.4.3 Setting a Time-Dependent Generator Request.............................................................................................. 101
7.8.4.4 Configuring the Load-Dependent Generator Request .................................................................................. 103
7.8.4.5 Time-Controlled Generator Requesting ......................................................................................................... 103
7.8.4.6 Changing the Generator Request via the Charging Process of the Battery................................................ 104
7.8.4.7 Setting an External Generator Request ......................................................................................................... 104
7.8.5 Configuring the Procedure in the Event of a Generator False Start..............................................................105
7.9 Off-Grid System...............................................................................................................................................105
7.9.1 Commissioning the Battery Current Sensor in Off-Grid Systems...................................................................105
7.9.2 Changing the Automatic Frequency Synchronization in Off-Grid Systems..................................................107
7.10 Multifunction Relay..........................................................................................................................................107
7.10.1 Setting the Time Control...................................................................................................................................107
7.10.2 Setting the Functions of the Multifunction Relays ...........................................................................................108
7.11 Complete Commissioning. ..............................................................................................................................109
8 Using the Inverter User Interface................................................................................................110
8.1 Establishing a connection to the user interface..............................................................................................110
8.1.1 Establishing a direct connection via WLAN...................................................................................................110
8.1.2 Establishing a Direct Connection via Ethernet................................................................................................111
8.1.3 Establishing a Connection via Ethernet in the local network.........................................................................112
8.2 Logging In and Out of the User Interface ......................................................................................................112
8.3 Start Page Design of the User Interface.........................................................................................................114
8.4 Changing the Password ..................................................................................................................................116
8.5 Forgotten Password.........................................................................................................................................117
9 Configuration of the Inverter.......................................................................................................118
9.1 Starting the Installation Assistant ....................................................................................................................118
9.2 Changing Operating Parameters ...................................................................................................................119
9.3 Setting Time-Controlled Inverter Operation in Off-Grid Systems..................................................................119
9.4 Activate WPS Function....................................................................................................................................120
9.5 Switching WLAN On and Off ........................................................................................................................120
9.6 Configuring the Energy Meter ........................................................................................................................121
9.7 Configuring the Modbus Function..................................................................................................................121
9.8 Supplementary Information.............................................................................................................................122
9.8.1 Determining the Battery Capacity...................................................................................................................122
9.8.2 Setting Time-Dependent Functions...................................................................................................................123
9.8.3 Setting Time-Controlled Functions ...................................................................................................................123
10 Starting and Stopping the System ..............................................................................................124
10.1 Switching on the Sunny Island........................................................................................................................124
10.2 Starting the System ..........................................................................................................................................124
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10.3 Stopping the System........................................................................................................................................125
10.4 Switching Off the Sunny Island.......................................................................................................................125
10.5 Tripping the Emergency Disconnection of the System...................................................................................126
11 Data Storage and Firmware Update..........................................................................................127
11.1 Viewing Event Messages or Instantaneous Values .......................................................................................127
11.2 Exporting Event Messages..............................................................................................................................127
11.3 Exporting Parameters ......................................................................................................................................127
11.4 Updating the Firmware ...................................................................................................................................127
11.5 Saving the Configuration in a File ..................................................................................................................128
11.6 Adopting a Configuration from a File ............................................................................................................128
12 Manually Controlling the Generator..........................................................................................130
12.1 Starting the Generator via the User Interface................................................................................................130
12.2 Stopping the Generator via the User Interface..............................................................................................130
12.3 Starting the Generator without Autostart Function ........................................................................................130
12.4 Stopping the Generator without Autostart Function ......................................................................................131
13 Disconnecting the Sunny Island from Voltage Sources ............................................................132
14 Cleaning and Maintenance .........................................................................................................133
14.1 Cleaning and Checking the Sunny Island Inverter Enclosure.......................................................................133
14.2 Checking the Function.....................................................................................................................................133
14.3 Checking the Connections ..............................................................................................................................133
14.4 Cleaning the Fans............................................................................................................................................134
14.5 Performing a Manual Equalization Charge in the Off-Grid System.............................................................136
14.6 Checking and Maintaining the Battery ..........................................................................................................136
14.7 Charging the Battery After Automatic Shutdown in Off-Grid Systems (Emergency Charge Mode)..........137
14.8 Changing Slave Addresses in a Cluster.........................................................................................................139
14.9 Replacing the Battery ......................................................................................................................................140
14.10 Replacing the Micro SD Card ........................................................................................................................141
14.11 Opening the Inverter .......................................................................................................................................142
14.12 Recommissioning the Inverter..........................................................................................................................143
15 Troubleshooting............................................................................................................................145
15.1 Sunny Island Inverter Behavior Under Fault Conditions................................................................................145
15.2 Event Messages...............................................................................................................................................145
15.3 Acknowledge Errors ........................................................................................................................................174
15.4 Frequently Asked Questions (FAQs) ..............................................................................................................175
15.4.1 Questions Regarding the Sunny Island...........................................................................................................175
15.4.2 Questions Regarding the Battery ....................................................................................................................175
15.4.3 Questions Regarding the Generator...............................................................................................................176
15.4.4 Questions Regarding Multicluster Systems.....................................................................................................177
16 Decommissioning the Sunny Island ............................................................................................178
17 Technical Data ..............................................................................................................................180
17.1 AC1 Connection for Stand-Alone Grid..........................................................................................................180
17.2 AC2 Connection for Utility Grid and Generator (External Energy Source) ................................................181
17.3 DC Connection for Battery..............................................................................................................................181
17.4 Efficiency ..........................................................................................................................................................182
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17.5 Sunny Island 4.4M Efficiency Profile..............................................................................................................183
17.6 Sunny Island 6.0H Efficiency Profile ..............................................................................................................184
17.7 Sunny Island 8.0H Efficiency Profile ..............................................................................................................185
17.8 Energy Consumption in No-Load Operation and Standby ..........................................................................185
17.9 Noise Emission.................................................................................................................................................185
17.10 Grid Configuration ..........................................................................................................................................185
17.11 Protective Devices............................................................................................................................................185
17.12 Equipment ........................................................................................................................................................186
17.13 Data Storage Capacity...................................................................................................................................186
17.14 DC Load Limitation Curve of the Multifunction Relays ..................................................................................187
17.15 General Data...................................................................................................................................................187
18 Spare Parts and Accessories .......................................................................................................188
19 Contact ..........................................................................................................................................189
20 EU Declaration of Conformity .....................................................................................................191
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SMA Solar Technology AG
Operating Manual 7SI44M-80H-12-BE-en-10

1 Information on this Document
1.1 Validity
This document is valid for the following device types:
• SI4.4M-12 (SunnyIsland 4.4M)
• SI6.0H-12 (SunnyIsland 6.0H)
• SI8.0H-12 (SunnyIsland 8.0H)
1.2 Target Group
This document is intended for qualified persons and operators. Only qualified persons are allowed to perform the
activities marked in this document with a warning symbol and the caption "Qualifiedperson". Tasks that do not require
any particular qualification are not marked and can also be performed by operators. Qualified persons must have the
following skills:
• Knowledge of how an inverter works and is operated
• Knowledge of how batteries work and are operated
• Training in the installation and commissioning of electrical devices and installations
• Knowledge of the applicable standards and directives
• Knowledge of and compliance with this document and all safety information
• Knowledge of and compliance with the documents of the battery manufacturer with all safety information
1.3 Additional Information
Links to additional information can be found at www.SMA-Solar.com:
Document title Document type
"Battery Management in Off-Grid Systems" Technology Brochure 6
"Battery Management" Technical information
"Grounding in Off-Grid Systems" Technical information
"Design of Off-Grid Systems with SunnyIsland Devices" Planning guidelines
"SMAFlexibleStorageSystem with Battery Backup Function" Planning guidelines
"SMASmartHome" Planning guidelines
"Multicluster Systems with Stand-Alone Grid or Increased Self-Con-
sumption and Battery-Backup Function"
Installation – Quick Reference Guide
1.4 Symbols
Symbol Explanation
Indicates a hazardous situation which, if not avoided, will result in death or serious injury
Indicates a hazardous situation which, if not avoided, can result in death or serious injury
Indicates a hazardous situation which, if not avoided, can result in minor or moderate injury
Indicates a situation which, if not avoided, can result in property damage
1Information on this Document SMA Solar Technology AG
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Symbol Explanation
Information advising that the following section contains activities that may be performed only
by qualified persons.
This information is relevant for systems which are to be operated in parallel with utility grid.
(e.g. SMAFlexibleStorageSystem).
Content is relevant for off-grid systems.
Information that is important for a specific topic or goal, but is not safety-relevant
Indicates a requirement for meeting a specific goal
Desired result
A problem that might occur
1.5 Typographies
Typography Use Example
bold • Terminals
• Slots
• Parameters
• Elements on the user interface
• Elements to be selected
• Elements to be entered
• The value can be found in the field
Energy.
• Select Settings.
• Enter 10 in the field Minutes.
>• Connects several elements to be
selected
• Select Settings > Date.
[Button]• Button to be selected or pressed • Select [Next].
1.6 Nomenclature
Complete designation Designation in this document
Off-grid system, battery-backup system, system for in-
creased self-consumption
System
SunnyPlaces, SunnyBoy, SunnyMiniCentral,
SunnyTripower
PV inverter
SunnyPortal, SunnyHomeManager, SMAClusterCon-
troller
Communication product
Grid failure or deviation from the country-specific thresh-
olds for voltage and frequency
Grid failure
1 Information on this Document
SMA Solar Technology AG
Operating Manual 9SI44M-80H-12-BE-en-10

Complete designation Designation in this document
Automatic transfer switch with battery-backup function Automatic transfer switch
Grid-forming generators such as electric generators or
utility grids
External energy sources
1Information on this Document SMA Solar Technology AG
Operating ManualSI44M-80H-12-BE-en-1010

2 Safety
2.1 Intended Use
The SunnyIsland is a battery inverter that controls the electrical energy balance in an off-grid system, in a system for
increased self-consumption or in a battery-backup system.
The product is for use in weather-protected outdoor areas and in indoor areas.
The product must only be used as stationary equipment.
The grid configuration of the utility grid must be a TN or TT system. Cables with copper conductors must be used for
the installation.
Device type SI4.4M-12 must not be used for single-phase single cluster systems and not for three-phase multi cluster
systems (see system description "Off-Grid Systems").
The product is not suitable for supplying life-sustaining medical devices. A power outage must not lead to personal
injury.
Loads connected to the SunnyIsland must have an CE, RCM or UL identification label.
The loads may temporarily overload the SunnyIsland. Therefore, only circuit breakers that can trigger the Sunny Island
at maximum may be used in off-grid systems and battery-backup systems.
The maximum output power of the AC sources must be observed in off-grid systems and battery-backup systems (see
Section17 "Technical Data", page180). The powers of the individual SunnyIsland inverters are added to yield the
maximum total power.
The entire battery voltage range must be completely within the permissible DC input voltage range of the SunnyIsland.
The maximum permissible DC input voltage of the SunnyIsland must not be exceeded. A battery fuse must be installed
between the battery and the SunnyIsland.
With lead-acid batteries, the battery room must be ventilated in accordance with the requirements of the battery
manufacturer and with the locally applicable standards and directives (see documentation of the battery
manufacturer).
The following conditions must be satisfied for lithium-ion batteries:
• The lithium-ion battery must comply with the locally applicable standards and directives and must be intrinsically
safe.
• The battery management of the lithium-ion battery used must be compatible with the SunnyIsland (see the
technical information at “List of Approved Batteries”).
• Applicable for off-grid systems and battery-backup systems: the lithium-ion battery must be able to supply sufficient
current at the maximum output power of the SunnyIsland (see Section17 "Technical Data", page180).
An DC supply grid may not be established with the SunnyIsland.
The multifunction relays of the Sunny Island are not suitable for controlling safety-relevant functions which can
endanger persons in the event of a malfunction in the multifunction relays.
Use this product only in accordance with the information provided in the enclosed documentation and with the locally
applicable standards and directives. Any other application may cause personal injury or property damage.
Alterations to the product, e.g. changes or modifications, are only permitted with the express written permission of
SMA Solar Technology AG. Unauthorized alterations will void guarantee and warranty claims and in most cases
terminate the operating license. SMA Solar Technology AG shall not be held liable for any damage caused by such
changes.
Any use of the product other than that described in the Intended Use section does not qualify as the intended use.
The enclosed documentation is an integral part of this product. Keep the documentation in a convenient place for
future reference and observe all instructions contained therein.
The type label must remain permanently attached to the product.
2 Safety
SMA Solar Technology AG
Operating Manual 11SI44M-80H-12-BE-en-10

2.2 Safety Information
This section contains safety information that must be observed at all times when working on or with the product.
To prevent personal injury and property damage and to ensure long-term operation of the product, read this section
carefully and observe all safety information at all times.
Danger to life from electric shock due to live voltage
High voltages are present in the live components of the inverter when in operation. Touching live components results
in death or serious injury due to electric shock.
• Wear suitable personal protective equipment for all work on the product.
• Do not touch any live components.
• Observe all warning messages on the inverter and in the documentation.
• Observe all safety information of the battery manufacturer.
• Switch off or disconnect the following components from voltage sources in the following order before carrying
out any work:
– SunnyIsland
– The circuit breakers of the SunnyIsland, the control and measurement voltages
– All circuit breakers and load-break switches of the connected AC sources
– Load-break switch of the battery fuse
• Ensure that no disconnected devices can be reconnected.
• After disconnecting the SunnyIsland from voltage sources, wait at least 15 minutes for the capacitors to
discharge completely before opening the doors.
• Before carrying out any work make sure that all devices are completely voltage-free.
• Cover or isolate any adjacent live components.
Danger to life due to electric shock
Overvoltages (e.g. in the case of a flash of lightning) can be further conducted into the building and to other
connected devices in the same network via network cables or other data cables if there is no overvoltage protection.
• Ensure that all devices in the same network and the battery are integrated in the existing overvoltage protection.
• When laying the network cables or other data cables outdoors, attention must be given to suitable overvoltage
protection at the cable transition from the inverter or the battery outdoors to the inside of a building.
2Safety SMA Solar Technology AG
Operating ManualSI44M-80H-12-BE-en-1012

Danger to life due to electric shock caused by incorrect connection to the grounding conductor terminals
Only the grounding conductors of the AC power cable may be connected to the grounding conductor terminals of
the inverter. When connecting the battery grounding to the grounding conductor terminals, life-threatening voltages
might be present on the enclosure of the inverter
• Have the inverter and the battery mounted, installed and commissioned only by qualified persons with the
appropriate skills.
• Observe all safety information of the battery manufacturer.
• Ground the battery according to the battery manufacturer's requirements.
• If the locally applicable standards and directives require battery grounding, connect the battery grounding to
the grounding busbar in the distributor.
Danger to life from electric shock due to circuit breakers that cannot be tripped
In an off-grid system and battery-backup system, only the circuit breakers that can be tripped by the SunnyIsland
can be tripped in the event of a grid failure. Circuit breakers with a higher operating current cannot be tripped.
Under fault conditions, a voltage that poses a danger to life may be present on accessible parts for several seconds.
• Check if a circuit breaker has a higher trip characteristic than the following circuit breakers which can be
tripped:
– SI4.4M-12: circuit breaker with trip characteristic B6 (B6A)
– SI6.0H-12 and SI8.0H-12: circuit breaker with trip characteristic B16 (B16A) or circuit breaker with trip
characteristic C6 (C6A)
• If a circuit breaker has a higher trip characteristic than the specified circuit breakers that can be tripped, you
should also install a residual-current device of type A.
Danger to life from electric shock due to overvoltages
Overvoltages of up to 1500V can occur in the stand-alone grid and in the battery-backup grid. If the connected
loads have not been designed for these overvoltages, a voltage that poses a danger to life may be present on
accessible parts for several seconds.
• Only connect loads that have a CE, RCM or UL designation. Loads with a CE, RCM or UL designation are
designed for overvoltages of up to 1500V.
• Operate the loads only when they are technically faultless and in an operationally safe state.
• Check the loads regularly for visible damage.
Danger to life from electric shock due to damaged inverter
Operating a damaged inverter can lead to hazardous situations that can result in death or serious injuries due to
electric shock.
• Only use the inverter when it is technically faultless and in an operationally safe state.
• Check the inverter regularly for visible damage.
• Make sure that all external safety equipment is freely accessible at all times.
• Make sure that all safety equipment is in good working order at any time.
2 Safety
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Operating Manual 13SI44M-80H-12-BE-en-10

Risk of crushing injuries due to moving PV array parts
A generator can be started automatically by the SunnyIsland. Moving parts in the PV array can crush or sever body
parts.
• Operate the generator only with the specified safety equipment.
• Carry out all work on the generator in accordance with the manufacturer's specifications.
Risk of burns due to short-circuit currents on the disconnected inverter
The capacitors in the DC input area of the inverter store energy. After the battery is isolated from the inverter, battery
voltage is still temporarily present at the DC terminal. A short circuit at the DC terminal of the inverter can lead to
burns and may damage the inverter.
• Wait 15minutes before performing any work at the DC terminal or on the DC cables. This allows the capacitors
to discharge.
Risk of burns due to hot enclosure parts
Some parts of the enclosure can get hot during operation.
• Mount the inverter in such a way that it cannot be touched inadvertently during operation.
Damage to the product due to sand, dust or moisture penetration
Sand, dust or moisture penetration can damage the inverter or impair its functionality.
• Do not open the inverter during a sandstorm, precipitation or when humidity exceeds 95%.
• Only perform maintenance work on the inverter when the environment is dry and free of dust.
Damage to the inverter due to electrostatic discharge
Touching electronic components can cause damage to or destroy the inverter through electrostatic discharge.
• Ground yourself before touching any component.
Damage to seals on the enclosure lids in subfreezing conditions
If you open the enclosure lid when temperatures are below freezing, the enclosure lid seal could be damaged. This
can lead to moisture entering the inverter.
• Only open the enclosure lid if the ambient temperature is not below -5°C
• If a layer of ice has formed on the seal of the lid when temperatures are below freezing, remove it prior to
opening the enclosure lid (e.g. by melting the ice with warm air). Observe the applicable safety regulations.
2.3 Battery Safety Information
This section contains safety information that must be observed at all times when working on or with batteries.
2Safety SMA Solar Technology AG
Operating ManualSI44M-80H-12-BE-en-1014

To prevent personal injury or property damage and to ensure long-term operation of the batteries, read this section
carefully and observe all safety information at all times.
Danger to life due to incompatible lithium-ion battery
An incompatible lithium-ion battery can lead to a fire or an explosion. With incompatible lithium-ion batteries, it is not
ensured that battery management is intrinsically safe and will protect the battery.
• Ensure that the lithium-ion batteries are approved for use with the SunnyIsland (see technical information “List of
Approved Batteries” at www.SMA-Solar.com).
• If no lithium-ion batteries approved for the inverter can be used, lead-acid batteries can be used.
• Verify that the battery complies with locally applicable standards and directives and is intrinsically safe.
Danger to life due to explosive gases
Explosive gases may escape from the battery and cause an explosion.
• Protect the battery environment from open flames, embers and sparks.
• Install, operate and maintain the battery in accordance with the manufacturer’s specifications.
• Do not burn the battery and do not heat it beyond the permitted temperature.
• Additional measures for lead-acid batteries: Ensure that the battery room is sufficiently ventilated.
Chemical burns due to battery electrolyte
If handled inappropriately, battery electrolyte can leak from the battery and cause irritation to the eyes, respiratory
system and skin.
• Install, operate, maintain and dispose of the battery according to the manufacturer’s specifications.
• Whenever working on the battery, wear suitable personal protective equipment such as rubber gloves, an
apron, rubber boots and goggles.
• Rinse acid splashes thoroughly for a long time with clear water, and consult a doctor immediately.
• If acid fumes have been inhaled, consult a doctor immediately.
Risk of burns due to flashes
Short-circuit currents in the battery can cause heat build-up and flashes.
• Remove watches, rings and other metal objects prior to carrying out any work on the battery.
• Use insulated tools for all work on the battery.
• Do not place tools or metal parts on the battery.
2 Safety
SMA Solar Technology AG
Operating Manual 15SI44M-80H-12-BE-en-10

Risk of burns due to hot battery components
Improper battery connection may result in excessively high transition resistances. Excessive transition resistances give
rise to localized heat build-up.
• Ensure that all pole connectors are connected with the connecting torque specified by the battery manufacturer.
• Ensure that all DC cables are connected with the connecting torque specified by the battery manufacturer.
Damage to the battery due to incorrect settings
The set battery parameters influence the charging behavior of the inverter. The battery can be damaged by incorrect
settings of the battery type, nominal voltage and capacity parameters.
• Set the correct battery type as well as the correct values for nominal voltage and battery capacity when
configuring.
• Ensure that the values recommended by the manufacturer are set for the battery (refer to the technical data of
the battery in the manufacturer documentation).
Permanent damage to the battery due to improper handling
Improper set-up and maintenance of the battery can cause it to become permanently damaged. Logs can help to
determine the cause.
• Comply with all requirements of the battery manufacturer with regard to mounting location.
• Check and log the status of the battery before performing maintenance work.
Useful hint: Many battery manufacturers provide suitable logs.
– Check the battery for visible damage and log.
– Measure and log the fill level and acid density of FLA batteries.
– In the case of lead-acid batteries, measure and log the voltages of the individual cells.
– Perform and log the test routines required by the battery manufacturer.
2.4 Battery-Backup System Safety Information
Wiring and connection of automatic transfer switches for single-phase or three-phase battery-backup
systems
• Do not bridge the neutral conductors of connections X1 to X5 in the automatic transfer switch. If the neutral
conductor connections are bridged, residual-current devices could trip accidentally.
• Label the equipment and devices of the automatic transfer switch in accordance with the schematic diagrams.
This will facilitate installation, commissioning and assistance in case servicing is required.
2Safety SMA Solar Technology AG
Operating ManualSI44M-80H-12-BE-en-1016

Connection of automatic transfer switches for single-phase battery-backup systems
In single-phase battery-backup systems, only the line conductor of the SunnyIsland that is connected to the circuit
breaker F1 of the automatic transfer switch is monitored for grid failure. If terminal AC2 Gen/Grid L is connected
to another line conductor, the battery-backup system is not able to synchronize with the utility grid following a grid
failure.
• With single-phase battery-backup systems, connect circuit breaker F1 and terminal AC2Gen/GridL of the
SunnyIsland to the same line conductor, e.g. to L1 (for a single-phase battery-backup system with an all-pole
disconnection function).
• Connect the PV inverter and the SunnyIsland to the same line conductor if possible. This way, in the event of
grid failure, the PV inverters are supplied with voltage directly and then can feed in even if phase coupling is
deactivated.
2 Safety
SMA Solar Technology AG
Operating Manual 17SI44M-80H-12-BE-en-10

3 Scope of Delivery
Check the scope of delivery for completeness and any externally visible damage. Contact your distributor if the scope
of delivery is incomplete or damaged.
SunnyIsland
C
N
D E
V
B I
M
L
Ya b
A
c
ACHTUNG
X
W
FGH
P
OR
QU
T
S
K
f
e
micro SD
Zd
Figure 1: Components included in the scope of delivery
Position Quan-
tity
Designation Position Quan-
tity
Designation
A 1 SunnyIsland S 2 Cable gland M32
B 2 Ventilation grid T 2 Counter nut for cable gland
M32
C 1 Wall mounting bracket
D 2 Hexagon socket screwM6x10 U 1 Filler plug M20
E 2 Hexagon socket screwM6x16 V 1 Filler plug M25
F 2 Pan head screw with hex socket
M8x20
W 1 Putty in a separate accessory
kit
G 2 Fender washer M8 X 1 Black CAT5e data cable, 2m
H 2 Spring washer M8
I 2 Conical spring washer M6 Y 2 Silicon tube 10mmx500mm
K 1 Clamping bracket
L 1 2-pole connecting terminal plate Z 3 Ferrite
M 2 3-pole connecting terminal plate a 1 Cable support sleeve for one
cable
N 2 4-pole connecting terminal plate b 2 Cable support sleeve for two
cables
O 1 Cable gland M20 c 1 Label “VDE0126-1-1”
P 1 Counter nut for cable gland M20 d 1 Quick Reference Guide
3Scope of Delivery SMA Solar Technology AG
Operating ManualSI44M-80H-12-BE-en-1018

Position Quan-
tity
Designation Position Quan-
tity
Designation
Q 2 Cable gland M25 e 1 Micro SD card (optional)
R 2 Counter nut for cable gland M25 f 1 Battery temperature sensor
(optional)
Communication for Multicluster System Order Option
A
SI-XXXXXX-XXX
XXXXX
XX
Sys Can
Out
Sys Can
In
B
E
CD
Position Quantity Designation
A 1 SI-SYSCAN.BGx*, installed in the master at the factory
B 1 Yellow CAT5e data cable, 5m
C 1 Screw, installed in the SunnyIsland at the factory
D 1 Terminator, plugged into SI-SYSCAN.BGx at the factory
E 1 Cable support sleeve for four cables
* CAN communication interface
3 Scope of Delivery
SMA Solar Technology AG
Operating Manual 19SI44M-80H-12-BE-en-10

4 Product Description
4.1 SunnyIsland
The SunnyIsland is a battery inverter that controls the electrical energy balance in an off-grid system, in a system for
increased self-consumption or in a battery-backup system.
A
B
C
D
Figure 2: Design of the SunnyIsland inverter
Position Designation
A Ventilation grid
B Type label
The type label uniquely identifies the inverter. You will require the information on the type la-
bel to use the product safely and when seeking customer support from Service. The type la-
bel must remain permanently attached to the product. You will find the following information
on the type label:
• Address of SMA Solar Technology AG
• Device type (Model)
• Serial number (SerialNo.)
• Device-specific characteristics
• Identification key (PIC) for registration in Sunny Portal
• Registration ID (RID) for registration in Sunny Portal
• WLAN password WPA2-PSK (WiFi Protected Access 2 - Preshared Key) for direct
connection to the inverter via WLAN
C Control panel
D Enclosure lid
Symbols on the Inverter and on the Type Label
Symbol Explanation
Danger to life due to electric shock
The product operates at high voltages. Prior to performing any work on the product,
disconnect the product from voltage sources. All work on the product must be carried
out by qualified persons only.
4Product Description SMA Solar Technology AG
Operating ManualSI44M-80H-12-BE-en-1020