SMA SUNNY BOY 3.0 User manual

SUNNY BOY
SBxx-1AV-41-BE-en-12 | Version 1.2ENGLISH
Operating manual
SUNNY BOY 3.0 / 3.6 / 4.0 / 5.0 / 6.0

Legal Provisions SMA Solar Technology AG
Operating manualSBxx-1AV-41-BE-en-122
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 in those cases where a
supply agreement requires advance notice. 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
Tel. [phone]
Fax [phone]
www.SMA.de
Email: [email protected]
Status: 12/12/2019
Copyright © 2019 SMA Solar Technology AG. All rights reserved.

Table of Contents
SMA Solar Technology AG
Operating manual SBxx-1AV-41-BE-en-12 3
Table of Contents
1 Information on this Document................................................. 6
1.1 Validity........................................................................................................................ 6
1.2 Target Group.............................................................................................................. 6
1.3 Content and Structure of this Document ................................................................... 6
1.4 Levels of Warning Messages.................................................................................... 6
1.5 Symbols in the Document .......................................................................................... 7
1.6 Typographies in the Document.................................................................................. 7
1.7 Designation in the document..................................................................................... 8
2 Safety ........................................................................................ 9
2.1 Intended Use .............................................................................................................. 9
2.2 IMPORTANT SAFETY INSTRUCTIONS.................................................................... 9
3 Scope of Delivery ..................................................................... 14
4 Product Overview .................................................................... 15
4.1 Product Description.................................................................................................... 15
4.2 Symbols on the Product ............................................................................................. 16
4.3 Interfaces and Functions ............................................................................................ 17
4.4 LED Signals................................................................................................................. 20
4.5 System Overview ....................................................................................................... 22
4.5.1 Circuitry Overview.................................................................................. 23
4.5.2 Communication Overview ..................................................................... 24
5 Mounting................................................................................... 25
5.1 Requirements for Mounting ....................................................................................... 25
5.2 Mounting the Inverter................................................................................................. 27
6 Electrical Connection ................................................................ 29
6.1 Overview of the Connection Area ............................................................................ 29
6.2 AC Connection........................................................................................................... 29
6.2.1 Requirements for the AC Connection.................................................... 29
6.2.2 Connecting the Inverter to the Utility Grid ............................................ 31
6.2.3 Connecting Additional Grounding........................................................ 32
6.3 Connecting the Network Cables............................................................................... 33
6.4 Connecting RS485 Devices....................................................................................... 35
6.5 Mounting the WLAN Antenna .................................................................................. 36
6.6 DC Connection........................................................................................................... 36
6.6.1 Requirements for the DC Connection.................................................... 36
6.6.2 Assembling the DC Connectors............................................................. 38

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6.6.3 Connecting the PV Array........................................................................ 40
6.6.4 Disassembling the DC Connectors ........................................................ 42
7 Commissioning ......................................................................... 45
7.1 Commissioning Procedure ......................................................................................... 45
7.2 Commissioning the Inverter........................................................................................ 46
7.3 Selecting a configuration option............................................................................... 47
7.4 Starting the Self-Test (for Italy and Dubai)................................................................ 49
8 Operation ................................................................................. 50
8.1 Establishing a connection to the user interface ........................................................ 50
8.1.1 Establishing a Direct Connection via Ethernet ...................................... 50
8.1.2 Establishing a direct connection via WLAN ......................................... 50
8.1.3 Establishing a Connection via Ethernet in the local network ............... 52
8.1.4 Establishing a Connection via WLAN in the Local Network ............... 53
8.2 Logging In and Out of the User Interface................................................................. 54
8.3 Start Page Design of the User Interface.................................................................... 56
8.4 Activating the Smart Inverter Screen......................................................................... 58
8.5 Starting the Installation Assistant............................................................................... 59
8.6 Activate WPS Function............................................................................................... 60
8.7 Switching WLAN On and Off................................................................................... 60
8.8 Switching the Dynamic Power Display Off............................................................... 61
8.9 Changing the Password............................................................................................. 62
8.10 Changing Operating Parameters.............................................................................. 62
8.11 Configuring the Country Data Set............................................................................. 63
8.12 Configuring the Active Power Mode ........................................................................ 64
8.13 Configuring the Modbus Function............................................................................. 65
8.14 Activating the Receipt of Control Signals (Only for Italy)........................................ 66
8.15 Deactivating Grounding Conductor Monitoring...................................................... 67
8.16 Setting SMA ShadeFix............................................................................................... 67
8.17 Setting the Rated Residual Current of the Residual-Current Device ........................ 67
8.18 Saving the Configuration in a File............................................................................. 68
8.19 Adopting a Configuration from a File....................................................................... 68
8.20 Updating the Firmware.............................................................................................. 68
9 Disconnecting the Inverter from Voltage Sources ................. 70
10 Cleaning the Inverter ............................................................... 73
11 Troubleshooting........................................................................ 74
11.1 Forgotten Password.................................................................................................... 74
11.2 Event Messages ......................................................................................................... 75

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Operating manual SBxx-1AV-41-BE-en-12 5
11.3 Checking the PV System for Ground Faults.............................................................. 92
11.4 Problems with streaming services.............................................................................. 96
12 Decommissioning the Inverter................................................. 97
13 Technical Data ..........................................................................100
13.1 DC/AC ....................................................................................................................... 100
13.1.1 Sunny Boy 3.0 / 3.6 / 4.0.................................................................... 100
13.1.2 Sunny Boy 5.0 / 6.0.............................................................................. 102
13.2 General Data ............................................................................................................. 104
13.3 Climatic Conditions.................................................................................................... 105
13.4 Protective Devices ...................................................................................................... 105
13.5 Equipment................................................................................................................... 105
13.6 Torques ....................................................................................................................... 106
13.7 Data Storage Capacity.............................................................................................. 106
14 Contact ......................................................................................107
15 EU Declaration of Conformity .................................................110

1 Information on this Document SMA Solar Technology AG
Operating manualSBxx-1AV-41-BE-en-126
1 Information on this Document
1.1 Validity
This document is valid for:
• SB3.0-1AV-41 (SunnyBoy 3.0) from firmware version ≥ 3.00.00.R
• SB3.6-1AV-41 (SunnyBoy 3.6) from firmware version ≥ 3.00.00.R
• SB4.0-1AV-41 (SunnyBoy 4.0) from firmware version ≥ 3.00.00.R
• SB5.0-1AV-41 (SunnyBoy 5.0) from firmware version ≥ 3.00.00.R
• SB6.0-1AV-41 (SunnyBoy 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 an inverter works and is operated
• Training in how to deal with the dangers and risks associated with installing, repairing and
using electrical devices 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
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 manual SBxx-1AV-41-BE-en-12 7
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
Symbol 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 Typographies in the Document
Typography 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
• Select Settings > Date.
[Button]
[Key]
• Button or key to be selected or
pressed
• Select [Enter].
# • Placeholder for variable
components (e.g., parameter
names)
• Parameter WCtlHz.Hz#

1 Information on this Document SMA Solar Technology AG
Operating manualSBxx-1AV-41-BE-en-128
1.7 Designation in the document
Complete designation Designation in this document
SunnyBoy Inverter, product

2 Safety
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Operating manual SBxx-1AV-41-BE-en-12 9
2 Safety
2.1 Intended Use
The SunnyBoy is a transformerless PV inverter with two MPP trackers which converts the direct
current of the PV array to grid-compliant alternating current and feeds it into the utility grid.
The product is suitable for indoor and outdoor use.
The product must only be operated with PV modules of protection class II in accordance with
IEC61730, application class A. The PV modules must be compatible with this product.
The product is not equipped with an integrated transformer and therefore has no galvanic isolation.
The product must not be operated with PV modules whose outputs are grounded. This can cause
the product to be destroyed. The product may be operated with PV modules whose frame is
grounded.
PV modules with a high capacity to ground must only be used if their coupling capacity does not
exceed 1.4μF (for information on how to determine the coupling capacity, see the Technical
Information "Leading Leakage Currents" at www.SMA-Solar.com).
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.
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 the
intended use.
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 and is not intended to replace any local, state, provincial, federal
or national laws, regulations or codes applicable 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
SAVE THESE INSTRUCTIONS

2 Safety SMA Solar Technology AG
Operating manualSBxx-1AV-41-BE-en-1210
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 DC cables are
touched
When exposed to light, the PV modules generate high DC voltage which is present in the DC
cables. Touching live DC cables results in death or lethal injuries due to electric shock.
• Do not touch non-insulated parts or cables.
• Disconnect the product 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.
DANGER
Danger to life due to electric shock when live components are touched on
opening the product
High voltages are present in the live parts and cables inside the product during operation.
Touching live parts and cables results in death or lethal injuries due to electric shock.
• Do not open the product.
DANGER
Danger to life due to electric shock from touching an ungrounded PV module
or array frame
Touching ungrounded PV modules or array frames results in death or lethal injuries due to electric
shock.
• Connect and ground the frame of the PV modules, the array frame and the electrically
conductive surfaces so that there is continuous conduction. Observe the applicable local
regulations.

2 Safety
SMA Solar Technology AG
Operating manual SBxx-1AV-41-BE-en-12 11
DANGER
Danger to life due to electric shock when touching live system components in
case of a ground fault
If a ground fault occurs, parts of the system may still be live. Touching live parts and cables
results in death or lethal injuries due to electric shock.
• Disconnect the product from voltage sources and make sure it cannot be reconnected
before working on the device.
• Touch the cables of the PV array on the insulation only.
• Do not touch any parts of the substructure or frame of the PV array.
• Do not connect PV strings with ground faults to the inverter.
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 are integrated in the existing overvoltage
protection.
• When laying the network cable outdoors, ensure that there is suitable surge protection at
the network cable transition from the product outdoors to the network inside the building.
• The Ethernet interface of the inverter is classified as "TNV-1" and offers protection against
overvoltages of up to 1.5kV.
WARNING
Danger to life due to fire or 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.
• Do not operate the DC load-break switch on the inverter in the event of ground fault
• Disconnect the PV array from the inverter via an external disconnection device. If there is no
disconnecting device present, wait until no more DC power is applied to the inverter.
• 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).

2 Safety SMA Solar Technology AG
Operating manualSBxx-1AV-41-BE-en-1212
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 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 due to hot enclosure parts
Some parts of the enclosure can get hot during operation. Touching hot enclosure parts can
result in burn injuries.
• During operation, do not touch any parts other than the enclosure lid of 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.
NOTICE
High costs due to inappropriate Internet tariff
Depending on use, the data volume of the product transferred via the Internet may vary in size.
The data volume depends, for example, on the number of inverters in the system, the frequency
of device updates, the frequency of data transfer to SunnyPortal or the use of FTP push. High
costs for the Internet connection can be the result.
• SMA Solar Technology AG recommends using an Internet flat rate.

2 Safety
SMA Solar Technology AG
Operating manual SBxx-1AV-41-BE-en-12 13
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 manualSBxx-1AV-41-BE-en-1214
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.
B C
+
D
_
EF
IH JG
A
Figure 1: Components included in the scope of delivery
Position Quantity Designation
A 1 Inverter
B 1 Wall mounting bracket
C 3 Pan head screw M5x12
D 4 Positive DC connector
E 4 Negative DC connector
F 8 Sealing plug
G 1 AC connector
H 1 RJ45 protective sleeve: swivel nut, cable support sleeve, threaded
sleeve
I 1 WLAN antenna
J 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

4 Product Overview
SMA Solar Technology AG
Operating manual SBxx-1AV-41-BE-en-12 15
4 Product Overview
4.1 Product Description
SUNNY BOY
B
D
A
C
Figure 2: Design of the product
Position Designation
A DC load-break switch
B LEDs
The LEDs indicate the operating state of the product.
C Label with QR Code for scanning via the SMA 360° App and easy connec-
tion to the inverter's user interface via WLAN
D Type label
The type label clearly identifies the product. The type label must remain per-
manently attached to the product. You will find the following information on
the type label:
• Device type (Model)
• Serial number (Serial No. or S/N)
• Date of manufacture
• 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
• Device-specific characteristics

4 Product Overview SMA Solar Technology AG
Operating manualSBxx-1AV-41-BE-en-1216
4.2 Symbols on the Product
Symbol 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 documentation
Observe all documentation supplied with the product.
Observe the documentation
Together with the red LED, this symbol indicates an error.
Inverter
Together with the green LED, this symbol indicates the operating state of the in-
verter.
Data transmission
Together with the blue LED, this symbol indicates the status of the network con-
nection.
Grounding conductor
This symbol indicates the position for connecting a grounding conductor.
Alternating current
Direct current

4 Product Overview
SMA Solar Technology AG
Operating manual SBxx-1AV-41-BE-en-12 17
Symbol Explanation
The product is has no galvanic isolation.
WEEE designation
Do not dispose of the product together with the household waste but in accor-
dance with the disposal regulations for electronic waste applicable at the in-
stallation site.
The product is suitable for outdoor installation.
Degree of protectionIP65
The product is protected against the penetration of dust and water that is di-
rected as a jet against the enclosure from all directions.
CE marking
The product complies with the requirements of the applicable EU directives.
RoHS
RoHS labeling
The product complies with the requirements of the applicable EU directives.
RCM (Regulatory Compliance Mark)
The product complies with the requirements of the applicable Australian stan-
dards.
ICASA
The product complies with the requirements of the South African standards for
telecommunication.
03931-16-03337
ANATEL
The product complies with the requirements of the Brazilian standards for
telecommunication.
Este equipamento opera em caráter secundário, isto é, não tem direito a pro-
teção contra interferência prejudicial, mesmo de estações do mesmo tipo, e
não pode causar interferência a sistemas operando em caráter primário.
The product complies with the Moroccan safety and EMC requirements for
electronic products.
4.3 Interfaces and Functions
The product is equipped with the following interfaces and functions:

4 Product Overview SMA Solar Technology AG
Operating manualSBxx-1AV-41-BE-en-1218
User interface for monitoring and configuration
The product is equipped as standard with an integrated webserver, which provides a user interface
for configuring and monitoring the product. The product user interface can be called up via the web
browser if there is an existing connection to an end device (e.g. computer, tablet PC or
smartphone).
Smart Inverter Screen
The Smart Inverter Screen enables you to view the status display and to display the current power
and consumption on the user interface login page. This gives you an overview of the most important
inverter data without having to log into the user interface.
The Smart Inverter Screen is deactivated by default. The Smart Inverter Screen can be activated via
the user interface once the inverter has been commissioned.
SMASpeedwire
The product is equipped with SMASpeedwire as standard. SMASpeedwire is a type of
communication based on the Ethernet standard. SMASpeedwire is designed for a data transfer
rate of 100Mbps and enables optimum communication between Speedwire devices within
systems.
The products supports the encrypted system communication with SMA Speedwire Encrypted
Communication. In order to be able to use the Speedwire encryption in the system, all Speedwire
devices, except for the SMAEnergyMeter, must support the function SMA Speedwire Encrypted
Communication.
SMA Webconnect
The product is equipped with a Webconnect function as standard. The Webconnect function
enables direct data transmission between the product and Internet portals SunnyPortal and
SunnyPlaces without any additional communication device and for a maximum of 4 products per
visualized system. In PV systems with more than 4 products, there is the option of establishing data
transmission between the products and SunnyPortal via the data logger (e.g.,
SMADataManager) or distributing the inverters over several systems. If there is an existing WLAN
or Ethernet connection, you can directly access your visualized system via the web browser on your
end device.
Webconnect enables - for PV systems operated in Italy - the connection or disconnection of the
inverter to or from the utility grid and the specifying of the frequency limits to be used via
IEC61850-GOOSE messages.
WLAN connection to SMA 360° app
The product has a QR code. By scanning the QR Code attached to the product via the SMA 360°
app, access to the product is established via WLAN and the connection to the user interface is
made automatically.

4 Product Overview
SMA Solar Technology AG
Operating manual SBxx-1AV-41-BE-en-12 19
WLAN
The product is equipped with a WLAN interface as standard. The inverter is delivered with the
WLAN interface activated as standard. If you do not want to use WLAN, you can deactivate the
WLAN interface.
In addition, the product has a WPS function. The WPS function is for automatically connecting the
product to a network (e.g. via router) and establish a direct connection between the product and
an end device.
Modbus
The product is equipped with a Modbus interface. The Modbus interface is deactivated by default
and must be configured as needed.
The Modbus interface of the supported SMA products is designed for industrial use – via SCADA
systems, for example – and has the following tasks:
• Remote query of measured values
• Remote setting of operating parameters
• Setpoint specifications for system control
RS485 Interface
The inverter is equipped with an RS485 interface as standard. The inverter can communicate via
cables with SMA communication products or with up to three gateways for the TS4 module
technology via the RS485 interface (information on supported SMAproducts at www.SMA-
Solar.com).
Integration of TS4-R module technology
The inverter is equipped with an RS485 interface and the Cloud Connect function as standard to
integrate the TS4 module technology. Up to three gateways in line topology can be connected to
the inverter via the RS485 interface. The use of a separate Cloud Connect Advanced
communication unit is not required. The Cloud Connect function has the following functions:
• Easy integration of the TS4 module technology components into the system
• Easy commissioning and configuration via the user interface of the inverter
• Visualization and monitoring via Sunny Portal
Grid management services
The product is equipped with service functions for grid management.
Depending on the requirements of the grid operator, you can activate and configure the functions
(e.g. active power limitation) via operating parameters.
Parallel Operation of the DC Inputs A and B
You have the option of operating the inverter DC inputs A and B in parallel. As a result, and as
opposed to normal operation, several parallel-connected strings can be connected to the inverter.
The inverter automatically detects the parallel operation of the DC inputs A and B.

4 Product Overview SMA Solar Technology AG
Operating manualSBxx-1AV-41-BE-en-1220
SMA ShadeFix
The inverter is equipped with the shade management system SMA ShadeFix. SMA ShadeFix uses
an intelligent MPP tracking system to determine the operating point with the highest output during
shading conditions. With SMA ShadeFix, inverters use the best possible energy supply from the PV
modules at all times to increase yields in shaded systems. SMA ShadeFix is enabled by default. The
time interval of SMA ShadeFix is usually six minutes. This means that the inverter determines the
optimum operating point every six minutes. Depending on the PV system or shading situation, it may
be useful to adjust the time interval.
All-pole sensitive residual-current monitoring unit
The all-pole sensitive residual-current monitoring unit detects alternating and direct differential
currents. In single-phase and three-phase inverters, the integrated differential current sensor detects
the current difference between the neutral conductor and the line conductor(s). If the current
difference increases suddenly, the inverter disconnects from the utility grid.
SMA Smart Connected
SMA Smart Connected is the free monitoring of the product via the SMA SunnyPortal. Thanks to
SMA Smart Connected, the operator and qualified person will be informed automatically and
proactively about product events that occur.
SMA Smart Connected is activated during registration in SunnyPortal. In order to use SMA Smart
Connected, it is necessary that the product is permanently connected to SunnyPortal and the data
of the operator and qualified person is stored in SunnyPortal and up-to-date.
4.4 LED Signals
The LEDs indicate the operating state of the product.
LED signal Explanation
The green LED is flashing
(twoseconds on and
twoseconds off)
Waiting for feed-in conditions
The conditions for feed-in operation are not yet met. As soon as the
conditions are met, the inverter will start feed-in operation.
The green LED flashes
quickly
Update of central processing unit
The central processing unit of the inverter is being updated.
The green LED is glowing Feed-in operation
The inverter feeds in with a power of at least 90%.
The green LED is pulsing Feed-in operation
The inverter is equipped with a dynamic power display via the green
LED. Depending on the power, the green LED pulses fast or slow. If
necessary, you can switch off the dynamic power display via the
green LED.
The green LED is off The inverter is not feeding into the utility grid.