SMA SUNNY BOY 240 User manual

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Installation Manual
SUNNY BOY 240
SUNNY MULTIGATE
SMG-SB240-IA-en-11 | Version 1.1 AMERICAN ENGLISH

Legal Provisions SMA Solar Technology AG
2 SMG-SB240-IA-en-11 Installation Manual
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.
Trademarks
All trademarks are recognized, even if not explicitly identified as such. A lack of identification does not mean that a product or
symbol is not trademarked.
The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of these marks by
SMA Solar Technology AG is under license.
QR Code® is a registered trademark of DENSO WAVE INCORPORATED.
SMA Solar Technology AG
Sonnenallee 1
34266 Niestetal
Germany
Tel. [phone]
Fax [phone]
www.SMA.de
E-mail: [e-mail]
© 2004 to 2013 SMA Solar Technology AG. All rights reserved.

SMA Solar Technology AG Table of Contents
Installation Manual SMG-SB240-IA-en-11 3
Table of Contents
1 Information on this Document .....................................................7
2 Safety.............................................................................................9
2.1 Intended Use............................................................................... 9
2.2 Skills of Qualified Persons ........................................................10
2.3 Safety Precautions.....................................................................11
3 Scope of Delivery .......................................................................13
4 Product Description.....................................................................15
4.1 Sunny Boy .................................................................................15
4.2 Sunny Multigate........................................................................15
4.3 Type Labels and Stickers ..........................................................16
4.4 Communication.........................................................................18
5 Mounting .....................................................................................19
5.1 Requirements for Mounting the Inverter ..................................19
5.2 Mounting the Inverter ...............................................................22
5.2.1 Mounting the Inverter on the Roof .................................................22
5.2.2 Mounting the Inverter on the Wall.................................................24
5.3 Grounding the Inverter Enclosure ............................................25
5.4 Requirements for Mounting of the Sunny Multigate ...............25
5.5 Mounting the Sunny Multigate ................................................27
6 Electrical Connection...................................................................29
6.1 Safety during Electrical Connection.........................................29
6.2 Connection Areas .....................................................................29
6.2.1 Sunny Boy........................................................................................29
6.2.2 Sunny Multigate..............................................................................30
6.3 Connecting the AC Cable to the Inverters...............................30
6.4 Connecting the PV Module to the Inverter ..............................32

Table of Contents SMA Solar Technology AG
4 SMG-SB240-IA-en-11 Installation Manual
6.5 AC Cabling from Inverter to Sunny Multigate.........................33
6.6 Option 1: AC Cabling with AC Field Plug ..............................34
6.6.1 Assembling the AC Field Plug ........................................................34
6.6.2 Removing and Reassembling the AC Field Plug............................37
6.6.3 Connecting the AC Field Plug to the AC Cable of the Inverter....38
6.6.4 Disconnecting the AC Field Plug from the Inverter AC Cable......38
6.7 Option 2: AC Cabling with Junction Box ................................39
6.8 Connecting the Inverter to the Sunny Multigate......................39
6.9 Connecting the Sunny Multigate to the Utility Grid................41
7 Commissioning............................................................................43
8 Configuration ..............................................................................45
8.1 Procedure ..................................................................................45
8.2 Connecting the Sunny Multigate to the Network ...................45
8.3 Registering the Sunny Multigate in Sunny Portal ....................46
8.4 Connecting the Sunny Multigate to Sunny Explorer...............47
8.5 Changing Operating Parameters.............................................47
8.6 Changing the Country Data Set ..............................................48
8.7 Deactivating the Webconnect Function...................................48
9 Disconnecting the Inverter from Voltage Sources....................49
10 Disconnecting the Sunny Multigate from Voltage Sources .....51
11 Troubleshooting ..........................................................................52
11.1 LED Signals on the Sunny Multigate........................................52
11.2 Events: Information, Warnings and Errors ...............................54
11.3 Checking the PV System for Ground Faults.............................64
12 Decommissioning........................................................................65
12.1 Decommissioning the Inverter ..................................................65
12.2 Decommissioning the Sunny Multigate....................................65

Installation Manual SMG-SB240-IA-en-11 5
SMA Solar Technology AG Table of Contents
13 Technical Data.............................................................................66
13.1 Sunny Boy 240.........................................................................66
13.2 Sunny Multigate........................................................................69
13.3 Torques of AC Field Plugs.........................................................71
14 Accessories ..................................................................................72
15 Contact.........................................................................................74

6 SMG-SB240-IA-en-11 Installation Manual
Table of Contents SMA Solar Technology AG

Installation Manual SMG-SB240-IA-en-11 7
SMA Solar Technology AG 1 Information on this Document
1 Information on this Document
Validity
STSatz_Hin w_Gültigke itsbereich
This document is valid for the following device types:
• SB 240-10 (Sunny Boy 240)
• Multigate-10 (Sunny Multigate)
STSatz_H inw_Zielgruppe_Fachk räfte
Target Group
This document is intended for qualified persons. Only qualified persons are allowed to perform the
tasks described in this manual (see Section 2.2 "Skills of Qualified Persons", page 10).
STSatz_Hinw_ Weiterführende Info rmationen
Additional Information
Links to additional information can be found at www.SMA-Solar.com:
STSatz_Hinw_Symbole
Document Title Document Type
Micro Inverters in Sunny Portal User Manual
Sunny Explorer User Manual
Circuit Breaker Technical Information
Measured Values and Parameters Technical Information
Criteria for Selecting a Residual-Current Device Technical Information
Application for SMA Grid Guard Code Certificate

8 SMG-SB240-IA-en-11 Installation Manual
1 Information on this Document SMA Solar Technology AG
Symbols
Nomenclature
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
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 could occur
Complete designation Designation in this document
Sunny Boy Inverter, micro inverter, product
Sunny Multigate Product
SMA Speedwire Speedwire
Torque Torque
Inverter which is located at the beginning of the PV system and
directly connected to the Sunny Multigate via the AC cable
and the AC field plug
First inverter
Inverter which is located at the end of the PV system and not
directly connected to the Sunny Multigate
Last inverter
Industrial enclosure, sub-distribution, switch cabinet or meter
box
Distribution box

Installation Manual SMG-SB240-IA-en-11 9
SMA Solar Technology AG 2 Safety
2Safety
2.1 Intended Use
Sunny Boy 240
The Sunny Boy is a micro inverter for PV systems that converts the direct current from a PV module into
grid-compliant alternating current. The alternating current generated is fed into the utility grid via the
Sunny Multigate.
STSatz_Best Verwend_Outdoor
The product is suitable for indoor and outdoor use.
The Sunny Boy must only be connected to one PV module. The PV module used must comply with
protection class II as per IEC 61730, application class A and must be compatible for use with the
Sunny Boy. The Sunny Boy must be operated with the Sunny Multigate.
Observe the pe rmitted ope rating range of all componen ts
All components must remain within their permitted operating ranges at all times.
Länderzulassung und Freigabe
The product must only be used in countries for which it is approved or released by
SMA Solar Technology AG and the grid operator.
STSatz_Best Verwend_Produkt ändern
Use this product only in accordance with the enclosed documentation and with the local standards
and directives. Any other application may cause injury to persons or lead to property damage.
For safety reasons, it is forbidden to modify the product or install components that are not explicitly
recommended or distributed by SMA Solar Technology AG for this product. Unauthorized
modifications and installations will void all warranty claims.
Any use of the product other than that described in the Intended Use section does not qualify as
appropriate.
The enclosed documentation is an integral part of this product. Keep the documentation in a
convenient place for future reference and observe the instructions.
The type label must be permanently attached to the product.
• Do not connect any loads between the Sunny Boy and the Sunny Multigate.
• Do not connect any loads between the individual Sunny Boy inverters.
• Do not open the lid of the Sunny Boy.
• Only mount the Sunny Boy on the framework mounted on the roof directly under the PV modules
or on the wall.
• Do not mount the Sunny Boy directly on the module frame.
• Do not mount the Sunny Boy on flammable construction materials.
• Do not mount the Sunny Boy in areas containing highly flammable materials.
• Do not mount the Sunny Boy in potentially explosive atmospheres.

10 SMG-SB240-IA-en-11 Installation Manual
2 Safety SMA Solar Technology AG
Sunny Multigate
The Sunny Multigate is a communication unit and forms the electrical connection point of the
PV system with a maximum of twelve micro inverters to the utility grid. The Sunny Multigate is equipped
with an integrated disconnection point for grid monitoring. The Sunny Multigate is connected between
the micro inverters and the utility grid to feed the alternating current of the micro inverters collectively
into the utility grid.
The product is designed for indoor use only.
The Sunny Multigate must be installed and operated in a distribution box.
Observe the pe rmitted ope rating range of all componen ts
All components must remain within their permitted operating ranges at all times.
Länderzulassung und Freigabe
The product must only be used in countries for which it is approved or released by
SMA Solar Technology AG and the grid operator.
STSatz_Best Verwend_Produkt ändern
Use this product only in accordance with the enclosed documentation and with the local standards
and directives. Any other application may cause injury to persons or lead to property damage.
For safety reasons, it is forbidden to modify the product or install components that are not explicitly
recommended or distributed by SMA Solar Technology AG for this product. Unauthorized
modifications and installations will void all warranty claims.
Any use of the product other than that described in the Intended Use section does not qualify as
appropriate.
The enclosed documentation is an integral part of this product. Keep the documentation in a
convenient place for future reference and observe the instructions.
The type label must be permanently attached to the product.
• A maximum of twelve micro inverters can be connected to the Sunny Multigate.
• No loads must be connected between the Sunny Boy and the Sunny Multigate.
• No loads must be connected between the Sunny Multigate and the circuit breaker.
• The grounding conductor of the AC cable from the inverter must be connected to the
Sunny Multigate.
• The grounding conductor of the Sunny Multigate must be connected to the equipotential bonding
of the AC distribution board.
• The Sunny Multigate must not be opened.
2.2 Skills of Qualified Persons
The tasks described in this document may only be performed by qualified persons. Qualified persons
must have the following skills:
• Knowledge of how an inverter works and is operated
• Training in how to deal with the dangers and risks associated with installing and using electrical
devices and systems
• Training in the installation and commissioning of electrical devices and systems
• Knowledge of the applicable standards and directives
• Knowledge of and adherence to this document and all safety precautions

Installation Manual SMG-SB240-IA-en-11 11
SMA Solar Technology AG 2 Safety
2.3 Safety Precautions
STSatz_Sicherh_Einleitungssatz
This section contains safety precautions that must be observed at all times when working on or with
the product.
To prevent personal injury or property damage and to ensure long-term operation of the product,
read this section carefully and follow all safety precautions at all times.
SiHiw_Strom schlag dur ch Erdschlu ss
SiHiw_Stromschlag durch b eschädigte G eräte
SiHiw_Verbrennung durchheiße Oberfläche
SiHiw_Be schädigung d es Modu-WR durch fehlende Stec ker
Risk of electric shock due to ground fault
If a ground fault occurs, parts of the system may still be live. Touching live components can lead to
lethal electric shocks.
• Prior to touching any components, always disconnect the inverter from any voltage sources as
described in this document (see Section 9, page 49).
• Prior to touching any components, always disconnect the Sunny Multigate from any voltage
sources as described in this document (see Section 10, page 51).
Risk of electric shock due to damaged devices
Operating a damaged inverter or Sunny Multigate can lead to hazardous situations that result in
lethal electric shocks.
• Only operate the inverter and the Sunny Multigate provided that they are in safe and full
working order.
• Regularly check for visible damage.
Risk of burns from hot surfaces
The surfaces of the inverter and the Sunny Multigate can get very hot. Touching the surface can
result in burns.
• Mount the inverter in such a way that it cannot be touched inadvertently.
• Do not touch hot surfaces.
• Wait ten minutes for the surface to cool sufficiently before performing any work on the inverter.
• Observe the safety messages on the inverter and the Sunny Multigate.
Damage to the inverter due to moisture and dust intrusion
Dust or moisture intrusion can damage the inverter and impair its functionality.
• Seal all inverter pin connectors with the appropriate plugs or protective caps.

12 SMG-SB240-IA-en-11 Installation Manual
2 Safety SMA Solar Technology AG
Damage to the Sunny Multigate type label due to the use of cleaning agents
• If the Sunny Multigate is dirty or dusty, you can clean the enclosure, the ventilation slots,
the type label, and the LEDs. Prior to cleaning it, disconnect the Sunny Multigate from voltage
sources (see Section 10, page 51). Then you can clean the Sunny Multigate with a dry brush.
Damage to the inverter type label due to the use of cleaning agents
• If the inverter is dirty, you can clean the enclosure, the enclosure lid, and the type label using
only water and a cloth.

Installation Manual SMG-SB240-IA-en-11 13
SMA Solar Technology AG 3 Scope of Delivery
3Scope of Delivery
STSatz_Li eferumfan g_Inhalt prü fen
Check the scope of delivery for completeness and any visible damage. Contact your distributor if the
delivery is incomplete or damaged.
Sunny Boy
Sunny Multigate
Figure 1: Components included in the scope of delivery of the inverter
Item Quantity Designation
A1Inverter
B 1 Supplementary sheet for Sunny Boy
Figure 2: Elements included in the scope of delivery of the Sunny Multigate

14 SMG-SB240-IA-en-11 Installation Manual
3 Scope of Delivery SMA Solar Technology AG
AC Cable and DC Plug
Item Quantity Designation
A1Sunny Multigate
B 1 AC field plug: insulator, plug enclosure, seal,
screw connection
C 1 Protective cap for unused AC pin connector on the last
inverter*
* Last inverter: The inverter that is located at the end of the PV system and not directly connected to the Sunny Multigate but only
to one other inverter, is called the "last inverter" in this document. An AC pin connector remains unused on the last inverter and must
be closed with a protective cap.
D 1 Label with registration ID (RID) and identification key (PIC)
for registration in Sunny Portal**
** Keep this label with your access data for registration in Sunny Portal. The access data can be found on the Sunny Multigate
type label.
E 1 Installation manual for Sunny Boy and Sunny Multigate,
mounting overview, supplementary sheet with default
settings
Figure 3: Components included in the scope of delivery of the AC cable and the DC plug
Item Quantity Designation
A 1 AC cable with two connectors for connecting two inverters
or for connecting the first inverter* with the AC field plug
* First inverter: The inverter that is located at the beginning of the PV system and is directly connected to the Sunny Multigate via
the AC cable is called "first inverter" in this document.
B1DC plug with two DC connectors**
** The DC connectors illustrated may deviate from your order.

Installation Manual SMG-SB240-IA-en-11 15
SMA Solar Technology AG 4 Product Description
4 Product Description
4.1 Sunny Boy
The Sunny Boy is a micro inverter for PV systems that converts the direct current from a PV module into
grid-compliant alternating current. The alternating current generated is fed into the utility grid via the
Sunny Multigate.
The DC plug has the function of a DC load-break switch.
Symbols on the Inverter and the DC Plug
4.2 Sunny Multigate
The Sunny Multigate is a communication unit and forms the electrical connection point of the
PV system with a maximum of twelve micro inverters to the utility grid. The Sunny Multigate is equipped
with an integrated disconnection point for grid monitoring. The Sunny Multigate is connected between
the micro inverters and the utility grid to feed the alternating current of the micro inverters collectively
into the utility grid.
Symbol Explanation
Grounding conductor
This symbol indicates the position for the grounding conductor connection.
DC load-break switch
The DC plug has the function of a DC load-break switch.
Figure 4: Design of the Sunny Multigate

16 SMG-SB240-IA-en-11 Installation Manual
4 Product Description SMA Solar Technology AG
4.3 Type Labels and Stickers
Sunny Boy
The type label uniquely identifies the inverter. The type label is located on the right-hand side of the
enclosure. You will find the following information on the type label:
•Device type (Model)
• Serial number (Serial No.)
• Date of manufacture
• Device-specific characteristics
STSatz_Typen schild_F unktionsbe schreibung
You will require the information on the type label to use the product safely and when seeking customer
support from the SMA Service Line.
Label with Inverter Serial Number
A type label with the serial number of the inverter is located at the rear of the Sunny Boy. This label is
detachable. To enable clear identification of the inverters of a PV system, e.g. under fault conditions,
this label can be applied to the enclosed mounting overview.
Item Designation
A Press-out brackets for mounting with screws
B Screw terminal for AC input (inverter)
Labeling: Inverter
CLEDs
The upper LED indicates the operating state of the inverter. The lower LED
indicates the operating state of the Sunny Multigate. Depending on the
operating state, the LEDs are glowing green, red or orange, or are off
(see Section 11.1 "LED Signals on the Sunny Multigate", page 52).
D Interface for optional communication
E Type label
F Screw terminal for AC output (utility grid)
Labeling: Grid
G Pin connector for connecting the network cable (RJ45)

Installation Manual SMG-SB240-IA-en-11 17
SMA Solar Technology AG 4 Product Description
Sunny Multigate
The type label provides a clear identification of the Sunny Multigate. The type label is located on the
right-hand side of the enclosure. You will find the following information on the type label:
•Device type (Model)
• Serial number (Serial No.)
• Registration ID (RID) for registration in Sunny Portal
• Identification key (PIC) for registration in Sunny Portal
• Device-specific characteristics
STSatz_Typen schild_F unktionsbe schreibung
You will require the information on the type label to use the product safely and when seeking customer
support from the SMA Service Line.
Symbols on the Type Labels
Symbol Explanation
Danger to life due to high voltages
The product operates at high voltages. All work on the product must be
carried out by qualified persons only.
Risk of burns from hot surfaces
The product can get hot during operation. Avoid contact during operation.
Allow the product to cool down sufficiently before carrying out any work.
Wear personal protective equipment such as safety gloves.
Observe the documentation.
Observe all the documentation supplied with the product.
CE marking
The product complies with the requirements of the applicable EU directives.
VDE certification mark
The product was tested by VDE and conforms with the current safety and
health requirements.
Certified safety
The product was tested by VDE and conforms with the current safety and
health requirements.

18 SMG-SB240-IA-en-11 Installation Manual
4 Product Description SMA Solar Technology AG
4.4 Communication
Communication between Inverter and Sunny Multigate
The inverter is connected to the Sunny Multigate via the AC cable. The communication and data
transmission between the Sunny Multigate and the inverters takes place via a Powerline interface.
Communication between Sunny Multigate and Other Communication Products
Communication between the Sunny Multigate and other SMA communication products
(e.g. Sunny Explorer, Sunny Portal) takes place via Speedwire/Webconnect. Speedwire is a type of
communication based on Ethernet. You can connect the Sunny Multigate to your network via
Speedwire. Webconnect enables data exchange between Sunny Multigate and Sunny Portal.
In order to establish a connection to Sunny Portal, the Sunny Multigate must be connected to a router
or modem with Internet connection and be integrated into the local network. To enable data exchange
between Sunny Multigate and Sunny Portal, you must register the PV system in Sunny Portal
(see Section 8.3, page 46). If you do not want to use the Webconnect function, you can deactivate
it in Sunny Explorer (see Section 8.7, page 48).
Figure 5: Example of a PV system with micro inverters and Sunny Multigate with communication via
Speedwire/Webconnect

Installation Manual SMG-SB240-IA-en-11 19
SMA Solar Technology AG 5 Mounting
5Mounting
5.1 Requirements for Mounting the Inverter
Requirements for the mounting location:
WaHiw_Lebensgefahr durc h Feuer oder Explos ion
☐ The mounting location must be inaccessible to children.
☐ A solid support surface must be available for mounting, e.g. concrete or masonry or frame
construction underneath the PV modules. In living areas, make sure that the support surface is
not made of drywall or similar. When in use, the inverter makes noises which can be perceived
as a nuisance.
☐ When mounting on the framework, the mounting position should preferably be in the center of
the PV module. This will ensure a longer electrical endurance of the inverter.
☐ The mounting location must be suitable for the weight and dimensions of the inverter
(see Section 13 "Technical Data", page 66).
☐ The mounting location should not be exposed to direct solar irradiation. Direct solar irradiation
can increase the operating temperature of the inverter. As a result, the inverter reduces its power
output.
☐ The ambient temperature must be between − 40°C and +65°C. This ensures optimal operation
of the inverter.
Danger to life due to fire or explosion
Despite careful construction, electrical devices can cause fire.
• Do not mount the product in areas containing highly flammable materials.
• Do not mount the product in potentially explosive atmospheres.

20 SMG-SB240-IA-en-11 Installation Manual
5 Mounting SMA Solar Technology AG
Dimensions for mounting: