SMA Solar Technology SUNNY BOY STORAGE 3.7 User manual

Operating manual
SUNNY BOY STORAGE 3.7 / 5.0 / 6.0
SBSxx-10-BE-en-16 | Version 1.6ENGLISH

Important information SMA Solar Technology AG
Operating manualSBSxx-10-BE-en-162
Important information
Depending on availability, the product is or is not equipped with Wi-Fi functionality. The reason for
this is the currently problematic semiconductor supply, caused by the COVID-19 pandemic.
If the product is not equipped with Wi-Fi functionality, please use the standard Ethernet
communication interface included for commissioning, configuration and integrating the product into
a network.
If integrating the product into a Wi-Fi network is absolutely necessary, this can be done using a
commercial Wi-Fi repeater, which is connected to the product via Ethernet.
Without the Wi-Fi function, a direct connection to the user interface by scanning the QR code on the
product with the SMA 360° app is not possible. Use a different type of connection.

Legal Provisions
SMA Solar Technology AG
Operating manual SBSxx-10-BE-en-16 3
Legal Provisions
The information contained in these documents is the property of SMA Solar Technology AG. No
part of this document may be reproduced, stored in a retrieval system, or transmitted, in any form or
by any means, be it electronic, mechanical, photographic, magnetic or otherwise, without the prior
written permission of 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 Solar Technology AG makes no representations or warranties, express or implied, with
respect to this documentation or any of the equipment and/or software it may describe, including
(with no limitation) any implied warranties of utility, merchantability, or fitness for any particular
purpose. All such representations or warranties are expressly disclaimed. Neither SMA Solar
Technology AG nor its distributors or dealers shall be liable for any indirect, incidental, or
consequential damages under any circumstances.
The exclusion of implied warranties may not apply in all cases under some statutes, and thus the
above exclusion may not apply.
Specifications are subject to change without notice. Every attempt has been made to make this
document complete, accurate and up-to-date. Readers are cautioned, however, that product
improvements and field usage experience may cause SMA Solar Technology AG to make changes
to these specifications without advance notice or per contract provisions. SMA Solar Technology
AG shall not be responsible for any damages, including indirect, incidental or consequential
damages, caused by reliance on the material presented, including, but not limited to, omissions,
typographical errors, arithmetical errors or listing errors in the content material.
SMA Warranty
You can download the current warranty conditions from the Internet at www.SMA-Solar.com.
Software licenses
The licenses for the installed software modules (open source) can be found in 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.
SMA Solar Technology AG
Sonnenallee 1
34266 Niestetal
Germany
Phone [phone]
Fax [phone]
www.SMA.de
E-mail: [email protected]
Status: 3/24/2022
Copyright © 2022 SMA Solar Technology AG. All rights reserved.

Table of Contents SMA Solar Technology AG
Operating manualSBSxx-10-BE-en-164
Table of Contents
1 Information on this Document................................................. 7
1.1 Validity........................................................................................................................ 7
1.2 Target Group.............................................................................................................. 7
1.3 Content and Structure of this Document ................................................................... 7
1.4 Levels of warning messages ...................................................................................... 7
1.5 Symbols in the Document .......................................................................................... 8
1.6 Typographical Elements in the Document ................................................................ 8
1.7 Designations in the Document................................................................................... 9
1.8 Additional Information ............................................................................................... 9
2 Safety ........................................................................................ 10
2.1 Intended Use .............................................................................................................. 10
2.2 IMPORTANT SAFETY INSTRUCTIONS.................................................................... 11
3 Scope of Delivery ..................................................................... 16
4 Product Overview .................................................................... 18
4.1 Product Description .................................................................................................... 18
4.2 Symbols on the Product ............................................................................................. 20
4.3 Interfaces and Functions ............................................................................................ 21
4.4 LED Signals................................................................................................................. 27
4.5 System Overview ....................................................................................................... 29
4.5.1 Circuitry Overview.................................................................................. 30
4.5.1.1 System with secure power supply...................................... 30
4.5.1.2 System with battery-backup function ................................. 31
4.5.2 Communication Overview ..................................................................... 32
4.6 "Battery Management" .............................................................................................. 33
4.6.1 Battery Use by Systems for Increased Self-Consumption..................... 33
4.6.2 Battery Use by Battery-Backup Systems with Increased Self-
Consumption........................................................................................... 34
5 Mounting................................................................................... 36
5.1 Requirements for Mounting ....................................................................................... 36
5.2 Mounting the product ................................................................................................ 39
6 Electrical Connection ................................................................ 43
6.1 Overview of the Connection Area ............................................................................ 43
6.1.1 View from Below..................................................................................... 43
6.1.2 Interior View............................................................................................ 44
6.2 Grounding ................................................................................................................. 45

Table of Contents
SMA Solar Technology AG
Operating manual SBSxx-10-BE-en-16 5
6.2.1 Overview of Grounding Connection..................................................... 45
6.2.2 Requirements for Battery Inverter Grounding Cable............................ 45
6.3 AC Connection........................................................................................................... 46
6.3.1 Requirements for the AC Connection .................................................... 46
6.3.2 Connecting the Inverter to the Utility Grid ............................................ 47
6.3.3 Connecting Additional Grounding........................................................ 49
6.4 Connecting the Network Cables............................................................................... 51
6.5 Connecting the energy meter.................................................................................... 52
6.6 Connecting CAN communication cable................................................................... 53
6.7 Connecting the switch and outlet for secure power supply operation ................... 55
6.8 Connecting Switch for black start (in battery-backup systems) ............................... 59
6.9 DC Connection........................................................................................................... 60
6.9.1 Possible Connection ............................................................................... 60
6.9.1.1 Connection of batteries with a charging/discharging
current limit of 10 A ............................................................ 61
6.9.1.2 Connection of two batteries with different charging/
discharging currents............................................................ 62
6.9.1.3 Connection of one battery with a charging/discharging
current limit of 20 A ............................................................ 62
6.9.1.4 Connection of a battery with a charging/discharging
current limit of 30 A ............................................................ 63
6.9.2 Requirements for the DC Connection.................................................... 63
6.9.3 Connecting the power cable of the battery.......................................... 64
7 Commissioning ......................................................................... 66
7.1 Commissioning Procedure ......................................................................................... 66
7.2 Commissioning the Inverter........................................................................................ 67
7.3 Selecting a configuration option ............................................................................... 69
8 Operation ................................................................................. 72
8.1 Establishing a connection to the user interface ........................................................ 72
8.1.1 Establishing a Direct Connection via Ethernet ...................................... 72
8.1.2 Establishing a direct connection via WLAN ......................................... 72
8.1.3 Establishing a Connection via Ethernet in the local network ............... 74
8.1.4 Establishing a Connection via WLAN in the Local Network ............... 75
8.2 Logging In and Out of the User Interface................................................................. 76
8.3 Start Page Design of the User Interface.................................................................... 78
8.4 Displaying and Downloading the Stored Data........................................................ 81
8.5 Starting the Installation Assistant............................................................................... 82
8.6 Secure power supply operation................................................................................ 83
8.6.1 Enable secure power supply operation ................................................ 84
8.6.2 Disable secure power supply operation ............................................... 84

Table of Contents SMA Solar Technology AG
Operating manualSBSxx-10-BE-en-166
8.7 Checking or Disabling Battery-Backup Operation................................................... 84
8.8 Activate WPS Function............................................................................................... 85
8.9 Switching WLAN On and Off................................................................................... 85
8.10 Changing the Password............................................................................................. 86
8.11 Changing Operating Parameters.............................................................................. 86
8.12 Configuring the Country Data Set............................................................................. 88
8.13 Configuring the Active Power Mode ........................................................................ 88
8.14 Configuring Battery and Automatic Transfer Switching Device .............................. 89
8.15 Disabling Battery Charging by PV System in Battery-Backup Operation Mode ... 90
8.16 Configuring the Modbus Function............................................................................. 90
8.17 Activating the Receipt of Control Signals (Only for Italy)........................................ 91
8.18 Deactivating Grounding Conductor Monitoring...................................................... 91
8.19 Configuring the Energy Meter................................................................................... 92
8.20 Saving the Configuration in a File............................................................................. 92
8.21 Adopting a Configuration from a File....................................................................... 92
8.22 Firmware Update ....................................................................................................... 93
8.22.1 Activating Automatic Firmware Update ................................................ 93
8.22.2 Updating Firmware with Update File via the User Interface................ 94
8.22.3 Updating Firmware with Update File via the USB Flash Drive ............ 94
8.22.4 Searching for and Installing New Firmware via the User Interface .... 95
9 Disconnecting the Inverter from Voltage Sources ................. 96
10 Clean the product..................................................................... 97
11 Troubleshooting........................................................................ 98
11.1 Forgotten Password.................................................................................................... 98
11.2 Event Messages ......................................................................................................... 99
11.3 Problems with streaming services.............................................................................. 135
12 Decommissioning the Inverter.................................................136
13 Procedure for Receiving a Replacement Device....................139
14 Technical Data ..........................................................................141
15 Contact ......................................................................................146
16 EU Declaration of Conformity .................................................147
17 UK Declaration of Conformity.................................................148

1 Information on this Document
SMA Solar Technology AG
Operating manual SBSxx-10-BE-en-16 7
1 Information on this Document
1.1 Validity
This document is valid for:
• SBS3.7-10 (SunnyBoyStorage 3.7) from firmware version ≥ 3.00.00.R
• SBS5.0-10 (SunnyBoyStorage 5.0) from firmware version ≥ 3.00.00.R
• SBS6.0-10 (SunnyBoyStorage 6.0) from firmware version ≥ 3.00.00.R
1.2 Target Group
This document is intended for qualified persons and end users. 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 end users. Qualified persons must have the following skills:
• Knowledge of how batteries work and are operated
• Training in how to deal with the dangers and risks associated with installing, repairing and
using electrical devices, batteries and installations
• Training in the installation and commissioning of electrical devices and installations
• Knowledge of all applicable laws, 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 Content and Structure of this Document
This document describes the mounting, installation, commissioning, configuration, operation,
troubleshooting and decommissioning of the product as well as the operation of the product user
interface.
You will find the latest version of this document and further information on the product in PDF format
and as eManual at www.SMA-Solar.com. You can also call up the eManual via the user interface
of the product.
Illustrations in this document are reduced to the essential information and may deviate from the real
product.
1.4 Levels of warning messages
The following levels of warning messages may occur when handling the product.
DANGER
Indicates a hazardous situation which, if not avoided, will result in death or serious injury.
WARNING
Indicates a hazardous situation which, if not avoided, could result in death or serious injury.

1 Information on this Document SMA Solar Technology AG
Operating manualSBSxx-10-BE-en-168
CAUTION
Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
NOTICE
Indicates a situation which, if not avoided, can result in property damage.
1.5 Symbols in the Document
Icon Explanation
Information that is important for a specific topic or goal, but is not safety-rele-
vant
☐
Indicates a requirement for meeting a specific goal
☑
Desired result
✖
A problem that might occur.
Example
Sections describing activities to be performed by qualified persons only
1.6 Typographical Elements in the Document
Typographical ele-
ment
Use Example
bold • Messages
• Terminals
• Elements on a user interface
• Elements to be selected
• Elements to be entered
• Connect the insulated
conductors to the terminals
X703:1 to X703:6.
• Enter 10 in the field
Minutes.
>• Connects several elements to be
selected
• Go to Settings > Date.
[Button]
[Key]
• Button or key to be clicked on or
pressed down
• Select [Enter].
# • Placeholder for variable
components (e.g., parameter
names)
• Parameter WCtlHz.Hz#

1 Information on this Document
SMA Solar Technology AG
Operating manual SBSxx-10-BE-en-16 9
1.7 Designations in the Document
Complete designation Designation in this document
SunnyBoyStorage Inverter, product
1.8 Additional Information
For more information, please go to www.SMA-Solar.com.
Title and information content Type of information
"Approved batteries and battery communication connection"
Overview of approved batteries
Technical Information
"SMASmartHome"
The System Solution for Greater Independence
Planning Guidelines
"SMA GRID GUARD 10.0 - Grid Management Services via Inverter
and System Controller"
Technical Information
"Efficiency and Derating"
Efficiency and derating behavior of the SMA inverters
Technical Information
"Parameters and Measured Values"
Overview of all inverter operating parameters and their configura-
tion options
Technical Information
"SMA and SunSpec Modbus® Interface"
Information on the Modbus interface
Technical Information
"Modbus® parameters and measured values"
Device-specific list of the Modbus register
Technical Information
"SMASPEEDWIRE FIELDBUS" Technical information

2 Safety SMA Solar Technology AG
Operating manualSBSxx-10-BE-en-1610
2 Safety
2.1 Intended Use
The SunnyBoyStorage is an AC-coupled battery inverter for parallel grid and stand-alone mode
operation. The SunnyBoyStorage converts the direct current supplied by a battery into grid-
compliant alternating current. The SunnyBoyStorage, together with a battery and a compatible
energy meter, make up a system for increased self-consumption (FlexibleStorageSystem) or,
together with a automatic transfer switching device compatible with SunnyBoyStorage, a battery-
backup system (FlexibleStorageSystem with battery-backup function).
The product must only be used as stationary equipment.
The product is suitable for indoor and outdoor use.
The product must only be operated in connection with an intrinsically safe lithium-ion battery
approved by SMA Solar Technology AG. An updated list of batteries approved by SMA Solar
Technology AG is available at www.SMA-Solar.com.
The battery must comply with the locally applicable standards and directives and must be
intrinsically safe (see technical information "SMA Flexible Storage System - Detailed explanations of
the safety concept" for detailed explanations regarding the safety concept of battery inverters by
SMA Solar Technology AG).
The communication interface of the battery used must be compatible with the product. The entire
battery voltage range must be completely within the permissible input voltage range of the product.
The maximum permissible DC input voltage of the product must not be exceeded.
The product is not suitable for supplying life-sustaining medical devices. A power outage must not
lead to personal injury.
All components must remain within their permitted operating ranges and their installation
requirements at all times.
The product must only be used in countries for which it is approved or released by SMA Solar
Technology AG and the grid operator.
The product may only be operated with one of the energy meters approved by SMA Solar
Technology AG. The following energy meters are allowed to be used when operating this product:
• EMETER-20 (SMAEnergyMeter)
• HM-20 (SunnyHomeManager 2.0)
The product may only be operated in battery-backup systems using an automatic transfer switching
device approved by SMA Solar Technology AG. You are not allowed to build automatic transfer
switching devices for operation with this product by yourself on the basis of a circuit diagram.
The following automatic transfer switching devices are allowed to be used when operating this
product:
• 10012856_V1.4 (3PH automatic transfer switching device for SMA SunnyBoyStorage) from
enwitec electronic GmbH & Co.KG
• For Italy only: 10013490_V1.0 (1PH Battery Backup-Distribution for 1 x SunnyBoyStorage)
from enwitec electronic GmbH & Co.KG
• For Italy only: 10013491_V1.0 (3PH automatic transfer switching device for SMA
SunnyBoyStorage) from enwitec electronic GmbH & Co.KG

2 Safety
SMA Solar Technology AG
Operating manual SBSxx-10-BE-en-16 11
• For Australia only: SBS-ABU-63.1-AU-10 (Automatic Backup Unit) from SMA Solar
Technology AG
Use SMA products only in accordance with the information provided in the enclosed
documentation and with the locally applicable laws, regulations, standards and directives. Any
other application may cause personal injury or property damage.
Alterations to the SMA products, 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
appropriate.
The enclosed documentation is an integral part of this product. Keep the documentation in a
convenient, dry place for future reference and observe all instructions contained therein.
This document does not replace any regional, state, provincial, federal or national laws, regulations
or standards that apply to the installation, electrical safety and use of the product. SMA Solar
Technology AG assumes no responsibility for the compliance or non-compliance with such laws or
codes in connection with the installation of the product.
The type label must remain permanently attached to the product.
2.2 IMPORTANT SAFETY INSTRUCTIONS
Keep the manual for future reference.
This section contains safety information that must be observed at all times when working.
The product has been designed and tested in accordance with international safety requirements. As
with all electrical or electronical devices, there are residual risks despite careful construction. 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
Danger to life due to electric shock when live components or cables of the
inverter are touched
High voltages are present in the conductive components or cables of the inverter. Touching live
parts and cables of the inverter results in death or lethal injuries due to electric shock.
• Disconnect the product and battery from voltage sources and make sure it cannot be
reconnected before working on the device.
• Wear suitable personal protective equipment for all work on the product.
• Do not touch non-insulated parts or cables.

2 Safety SMA Solar Technology AG
Operating manualSBSxx-10-BE-en-1612
DANGER
Danger to life due to electric shock when live components or DC cables are
touched
The DC cables connected to a battery may be live. Touching live DC cables results in death or
serious injury due to electric shock.
• Disconnect the product and battery from voltage sources and make sure it cannot be
reconnected before working on the device.
• Wait five minutes before working on the inverter.
• Observe all safety information of the battery manufacturer.
• Do not touch non-insulated parts or cables.
• Do not remove the terminal block with the connected DC conductors from the slot under
load.
• Wear suitable personal protective equipment for all work on the product.
DANGER
Danger to life due to electric shock in case of overvoltages and if surge
protection is missing
Overvoltages (e.g. in the event of a flash of lightning) can be further conducted into the building
and to other connected devices in the same network via the network cables or other data cables
if there is no surge protection. Touching live parts and cables results in death or lethal injuries due
to electric shock.
• Ensure that all devices in the same network and the battery are integrated into the existing
surge protection.
• When laying the network cables or other data cables outdoors, it must be ensured that a
suitable surge protection device is provided at the transition point of the cable from the
product or the battery outdoors to the inside of a building.
• The Ethernet interface of the product is classified as "TNV-1" and offers protection against
overvoltages of up to 1.5kV.

2 Safety
SMA Solar Technology AG
Operating manual SBSxx-10-BE-en-16 13
WARNING
Danger to life due to fire and explosion
In rare cases, an explosive gas mixture can be generated inside the product under fault
conditions. In this state, switching operations can cause a fire inside the product or explosion.
Death or lethal injuries due to hot or flying debris can result.
• In the event of a fault, do not perform any direct actions on the product.
• Ensure that unauthorized persons have no access to the product.
• Disconnect the battery from the product via an external disconnection device.
• Disconnect the AC circuit breaker, or keep it disconnected in case it has already tripped,
and secure it against reconnection.
• Only perform work on the product (e.g., troubleshooting, repair work) when wearing
personal protective equipment for handling of hazardous substances (e.g., safety gloves,
eye and face protection, respiratory protection).
WARNING
Risk of injury due to toxic substances, gases and dusts.
In rare cases, damages to electronic components can result in the formation of toxic substances,
gases or dusts inside the product. Touching toxic substances and inhaling toxic gases and dusts
can cause skin irritation, burns or poisoning, trouble breathing and nausea.
• Only perform work on the product (e.g., troubleshooting, repair work) when wearing
personal protective equipment for handling of hazardous substances (e.g., safety gloves,
eye and face protection, respiratory protection).
• Ensure that unauthorized persons have no access to the product.
WARNING
Danger to life due to fire or explosion when batteries are fully discharged
A fire may occur due to incorrect charging of fully discharged batteries. This can result in death
or serious injury.
• Before commissioning the system, verify that the battery is not fully discharged.
• Do not commission the system if the battery is fully discharged.
• If the battery is fully discharged, contact the battery manufacturer for further proceedings.
• Only charge fully discharged batteries as instructed by the battery manufacturer.

2 Safety SMA Solar Technology AG
Operating manualSBSxx-10-BE-en-1614
WARNING
Danger to life due to burns caused by electric arcs through short-circuit
currents
Short-circuit currents in the battery can cause heat build-up and electric arcs. Heat build-up and
electric arcs may result in lethal injuries due to burns.
• Disconnect the battery from all voltages sources prior to performing any work on the
battery.
• Observe all safety information of the battery manufacturer.
WARNING
Danger to life due to electric shock from destruction of the measuring device
due to overvoltage
Overvoltage can damage a measuring device and result in voltage being present in the
enclosure of the measuring device. Touching the live enclosure of the measuring device results in
death or lethal injuries due to electric shock.
• Only use measuring devices with a DC input voltage range of 600V or higher.
CAUTION
Risk of burns from hot surfaces
The surface of the inverter 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 30 minutes for the surface to cool sufficiently.
• Observe the safety messages on the inverter.
CAUTION
Risk of injury due to weight of product
Injuries may result if the product is lifted incorrectly or dropped while being transported or
mounted.
• Transport and lift the product carefully. Take the weight of the product into account.
• Wear suitable personal protective equipment for all work on the product.

2 Safety
SMA Solar Technology AG
Operating manual SBSxx-10-BE-en-16 15
NOTICE
Damage to the enclosure seal in subfreezing conditions
If you open the product or disconnect the PowerUnit and ConnectionUnit when temperatures
are below freezing, the enclosure seals can be damaged. Moisture can penetrate the product
and damage it.
• Only open the product if the ambient temperature is not below 0°C.
• If a layer of ice has formed on the enclosure seal when temperatures are below freezing,
remove it prior to opening the product (e.g. by melting the ice with warm air).
• Do not disassemble the PowerUnit and ConnectionUnit unless the ambient temperature is
at least 0°C and conditions are frost-free.
NOTICE
Damage to the product due to sand, dust and moisture ingress
Sand, dust and moisture penetration can damage the product and impair its functionality.
• Only open the product if the humidity is within the thresholds and the environment is free of
sand and dust.
• Do not open the product during a dust storm or precipitation.
NOTICE
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.
NOTICE
Damage to the product due to cleaning agents
The use of cleaning agents may cause damage to the product and its components.
• Clean the product and all its components only with a cloth moistened with clear water.
Change to the names and units of grid parameters to comply with the grid-
connection requirements in accordance with Regulation (EU) 2016/631
(valid from April 27, 2019)
To comply with the EU grid-connection requirements (valid from April 27, 2019) the names
and units of grid parameters were changed. This change is valid from firmware version
≥3.00.00.R if a country data set for fulfilling the EU grid-connection requirements (valid from
2019-04-27) is set. Names and units of grid parameters for inverters with firmware version
≤2.99.99.R are not affected by this change and remain valid. This also applies from firmware
version ≥3.00.00.R if a country data set that is valid for countries outside the EU is set.

3 Scope of Delivery SMA Solar Technology AG
Operating manualSBSxx-10-BE-en-1616
3 Scope of Delivery
(Name des Gerätes):
Bitte füllen Sie die folgenden Felder aus:
:
Typ:
Seriennummer:
Datum der Inbetriebnahme:
Anschrift:
Installationsbetrieb
Typ:
Seriennummer:
Datum der Inbetriebnahme:
Anschrift:
Installationsbetrieb
Gewährleistungs- und Garantiebedingungen
B C DE F GH
IJ K LOPN
Q R S
M
T
A
UV
Figure 1: Components included in the scope of delivery
Position Quantity Designation
A 1 Inverter
B 1 Hexagon socket cap head screw M5x60 (not required)
C 1 Quick reference guide with password label on the rear side
The label contains the following information:
• PIC (Product Identification Code) identification key for
registering the system in SunnyPortal
• RID (Registration Identifier) registration ID for registering the
system in SunnyPortal
• WLAN password WPA2-PSK (WiFi Protected Access 2 -
Preshared Key) for direct connection to the inverter via WLAN
D 1 4-pole terminal block for connecting a RS485 energy meter
E 1 Terminal block for the AC connection
F 1 Terminal block for connecting the outlet for secure power supply op-
eration
G 4 6-pole terminal block for connecting the CAN battery communica-
tion cables and the CAN communication cable of the automatic
transfer switching device
H 1 2-pole terminal block for the switch connection for secure power
supply operation or for black start function.
I 5 Clamping bracket
J 5 Cylindrical screw M5x16
K 1 Washer M5

3 Scope of Delivery
SMA Solar Technology AG
Operating manual SBSxx-10-BE-en-16 17
Position Quantity Designation
L 5 Spring washer M5
M 6 Cable gland and counter nut PG21
N 2 Three-hole cable support sleeve
O 4 Four-hole cable support sleeve
P 1 Two-hole cable support sleeve
Q 6 Sealing plug for two-hole and three-hole cable support sleeve
R 6 Sealing plug for four-hole cable support sleeve
S 2 Blue jumper
T 2 Red jumper
U 1 Ferrite
V 1 Cable tie

4 Product Overview SMA Solar Technology AG
Operating manualSBSxx-10-BE-en-1618
4 Product Overview
4.1 Product Description
The SunnyBoyStorage uses the connected battery for the intermediate storage of excess PV
energy in the SMAFlexibleStorageSystem. For this purpose, the SunnyBoyStorage receives the
feed-in and purchased energy data from the energy meter. This data is used by the
SunnyBoyStorage to control the charging and discharging of the battery.
The use of an automatic transfer switching device is required in the battery-backup system. In the
event of grid failure, the automatic transfer switching device disconnects the PV system, loads and
the SunnyBoyStorage from the utility grid and creates a battery-backup grid. The battery-backup
grid supplies loads that should continue to be supplied with electricity in the event of grid failure. In
the event of grid failure, the SunnyBoyStorage supplies the loads with energy after a short
switching time. The PV system supplies additional energy that can be used to supply the loads and
charge the battery.
The use of an automatic transfer switching device is not required in limited battery-backup systems.
To build a limited battery-backup system, you must attach an outlet and a switch to the inverter. You
can connect a load to the outlet, which should continue to be supplied with power from the battery
in the event of grid failure. The secure power supply operation is not automatically enabled in the
event of a grid failure, neither is it automatically disabled once the utility grid is available again.
During secure power supply operation, the load can only be supplied with energy as long as there
is stored energy available in the battery.
Secure power supply operation in FlexibleStorageSystems with backup
power supply not possible
If the inverter is used in a battery-backup system and connected with an automatic transfer
switch, the secure power supply operation is not available.

4 Product Overview
SMA Solar Technology AG
Operating manual SBSxx-10-BE-en-16 19
B
E
H
F
A
D
C
G
Figure 2: Design of the inverter
Position Designation
A Power Unit
B Enclosure lid of the Power Unit
C Enclosure lid for the Connection Unit
D Connection Unit
E Type label
The type label uniquely identifies the inverter. The type label must remain per-
manently attached to the product. You will find the following information on
the type label:
• Inverter device type (Model)
• Serial number of the PowerUnit (Serial No. Power Unit or S/N Power
Unit)
• Date of manufacture
• Device-specific characteristics
F Additional type label
The additional type label must remain permanently attached to the product.
You will find the following information on the additional type label:
• Device type (Model)
• Inverter serial number (Serial number device or S/N device)
• Identification key (PIC) for registration in Sunny Portal
• Registration ID (RID) for registration in Sunny Portal
• WLAN password (WPA2-PSK) for the direct connection to the user
interface of the inverter via WLAN

4 Product Overview SMA Solar Technology AG
Operating manualSBSxx-10-BE-en-1620
Position Designation
G Label with QR Code for scanning via the SMA 360° App and easy connec-
tion to the inverter's user interface via Wi-Fi (only available if the product is
equipped with a Wi-Fi interface)
H LEDs
The LEDs indicate the operating state of the product.
4.2 Symbols on the Product
Icon Explanation
Beware of a danger zone
This symbol indicates that the product must be additionally grounded if addi-
tional grounding or equipotential bonding is required at the installation site.
Beware of electrical voltage
The product operates at high voltages.
Beware of hot surface
The product can get hot during operation.
5 min
Danger to life due to high voltages in the inverter; observe a waiting time of 5
minutes.
High voltages that can cause lethal electric shocks are present in the live com-
ponents of the inverter.
Prior to performing any work on the inverter, disconnect it from all voltage
sources as described in this document.
Observe the documentations
Observe all documentations supplied with the product.
Inverter
Together with the green LED, this symbol indicates the operating state of the in-
verter.
Observe the documentations
Together with the red LED, this symbol indicates an error.
Data transmission
Together with the blue LED, this symbol indicates the status of the network con-
nection.