SMA SUNNY BOY STORAGE 2.5 User manual

SBS25-1VL-10-BE-en-13 | Version 1.3ENGLISH
Operating manual
SUNNY BOY STORAGE 2.5

Legal Provisions SMA Solar Technology AG
Operating manualSBS25-1VL-10-BE-en-132
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 SBS25-1VL-10-BE-en-13 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..................................................................................... 7
1.8 Additional Information............................................................................................... 8
2 Safety ........................................................................................ 9
2.1 Intended Use .............................................................................................................. 9
2.2 IMPORTANT SAFETY INSTRUCTIONS.................................................................... 10
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 ............................................................................................ 18
4.4 LED Signals................................................................................................................. 19
4.5 System Overview ....................................................................................................... 21
4.5.1 Circuitry Overview.................................................................................. 22
4.5.2 Communication Overview ..................................................................... 23
4.6 "Battery Management" .............................................................................................. 24
4.6.1 Battery Use by Systems for Increased Self-Consumption..................... 24
5 Mounting................................................................................... 25
5.1 Requirements for Mounting ....................................................................................... 25
5.2 Mounting the Inverter................................................................................................. 27
6 Electrical Connection ................................................................ 30
6.1 Overview of the Connection Area ............................................................................ 30
6.2 AC Connection........................................................................................................... 31
6.2.1 Requirements for the AC Connection.................................................... 31
6.2.2 Connecting the Inverter to the Utility Grid ............................................ 32
6.2.3 Connecting Additional Grounding........................................................ 34
6.3 Connecting the Network Cables............................................................................... 35
6.4 Connecting CAN communication cable................................................................... 37
6.5 DC Connection........................................................................................................... 40

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6.5.1 Assembling the DC Connectors............................................................. 40
6.5.2 Connecting the power cable of the battery.......................................... 42
6.5.3 Disassembling the DC Connectors ........................................................ 43
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 Starting the Installation Assistant............................................................................... 59
8.5 Activate WPS Function............................................................................................... 60
8.6 Switching WLAN On and Off................................................................................... 60
8.7 Changing the Password............................................................................................. 61
8.8 Changing Operating Parameters.............................................................................. 62
8.9 Configuring the Country Data Set............................................................................. 63
8.10 Configuring the Active Power Mode ........................................................................ 64
8.11 Configuring the Modbus Function............................................................................. 65
8.12 Activating the Receipt of Control Signals (Only for Italy)........................................ 66
8.13 Deactivating Grounding Conductor Monitoring...................................................... 66
8.14 Configuring the Energy Meter................................................................................... 66
8.15 Setting the heating mode for the battery.................................................................. 67
8.16 Saving the Configuration in a File............................................................................. 68
8.17 Adopting a Configuration from a File....................................................................... 68
8.18 Updating the Firmware.............................................................................................. 69
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
11.3 Problems with streaming services.............................................................................. 95

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Operating manual SBS25-1VL-10-BE-en-13 5
12 Decommissioning the Inverter................................................. 96
13 Procedure when Replacing a Battery..................................... 99
14 Technical Data ..........................................................................100
15 Spare Parts ...............................................................................104
16 Contact ......................................................................................105
17 EU Declaration of Conformity .................................................108

1 Information on this Document SMA Solar Technology AG
Operating manualSBS25-1VL-10-BE-en-136
1 Information on this Document
1.1 Validity
This document is valid for:
• SBS2.5-1VL-10 (SunnyBoyStorage 2.5) from firmware version 03.00.00.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
• 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
at www.SMA-Solar.com.
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.
CAUTION
Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.

1 Information on this Document
SMA Solar Technology AG
Operating manual SBS25-1VL-10-BE-en-13 7
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#
1.7 Designation in the document
Complete designation Designation in this document
SunnyBoyStorage Inverter, product

1 Information on this Document SMA Solar Technology AG
Operating manualSBS25-1VL-10-BE-en-138
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
"Application for SMAGridGuard Code" Form
"SMA GRID GUARD 10.0 - Grid management services through
SMA Inverter"
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 register HTML file
Technical Information
"SMASPEEDWIRE FIELDBUS" Technical information

2 Safety
SMA Solar Technology AG
Operating manual SBS25-1VL-10-BE-en-13 9
2 Safety
2.1 Intended Use
The SunnyBoyStorage is a single-phase, AC coupled battery inverter for parallel grid operation.
The SunnyBoyStorage converts the direct current supplied by a battery into grid-compliant
alternating current. With a battery and an energy meter, the SunnyBoyStorage becomes a system
for increased self-consumption.
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.
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 Safety SMA Solar Technology AG
Operating manualSBS25-1VL-10-BE-en-1310
2.2 IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
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
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.
• Do not touch non-insulated parts or cables.
• Do not disconnect the DC connectors under load.
• Wear suitable personal protective equipment for all work on the product.
• Observe all safety information of the battery manufacturer.
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 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 inverter is classified as "TNV-1" and offers protection against
overvoltages of up to 1.5kV.

2 Safety
SMA Solar Technology AG
Operating manual SBS25-1VL-10-BE-en-13 11
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.
• 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
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.
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.

2 Safety SMA Solar Technology AG
Operating manualSBS25-1VL-10-BE-en-1312
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.
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.
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.

2 Safety
SMA Solar Technology AG
Operating manual SBS25-1VL-10-BE-en-13 13
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 manualSBS25-1VL-10-BE-en-1314
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 D
+
I
_
K
A
G
LN
M
L
CE F
H
Figure 1: Components included in the scope of delivery
Position Quantity Designation
A 1 Inverter
B 1 Connection cap
C 1 Clamping bracket
D 1 Cylindrical screw M5x16
E 1 Spring lock washer
F 1 Washer
G 1 Connecting terminal plate for the AC connection
H 1 Plug for the battery communication connection
I 1 Positive DC connector
K 1 Negative DC connector
L 2 Sealing plug
M 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 SBS25-1VL-10-BE-en-13 15
4 Product Overview
4.1 Product Description
B
A
D
C
Figure 2: Design of the product
Position Designation
A Connection cap
Connection area with cable glands for connection to the utility grid, the
battery communication cable and a network cable
B LEDs
The LEDs indicate the operating state of the product.

4 Product Overview SMA Solar Technology AG
Operating manualSBS25-1VL-10-BE-en-1316
Position Designation
C Label with QR Code for scanning via the SMA 360° App and easy con-
nection to the inverter's user interface via WLAN
D Type label
The type label clearly identifies the product. The type label must remain
permanently attached to the product. You will find the following informa-
tion 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
4.2 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.

4 Product Overview
SMA Solar Technology AG
Operating manual SBS25-1VL-10-BE-en-13 17
Symbol Explanation
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
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.

4 Product Overview SMA Solar Technology AG
Operating manualSBS25-1VL-10-BE-en-1318
Symbol Explanation
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.
4.3 Interfaces and Functions
The product is equipped with the following interfaces and functions:
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 nominal energy
throughput and state of charge of the battery on the user interface login page. You therefore have
an overview of the most important inverter and battery 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

4 Product Overview
SMA Solar Technology AG
Operating manual SBS25-1VL-10-BE-en-13 19
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.
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.
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.
Limited function in the event of frost
The integrated WLAN interface of the product is only designed for temperatures down to
-20°C.
• Deactivate the WLAN interface at low temperatures (see Section8.6, page60).
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
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.
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.
4.4 LED Signals
The LEDs indicate the operating state of the product.

4 Product Overview SMA Solar Technology AG
Operating manualSBS25-1VL-10-BE-en-1320
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 Parallel grid operation
The green LED is off The inverter is not feeding into the utility grid.
The red LED is glowing Event occurred
If an event occurs, a distinct event message and the corresponding
event number will be displayed in addition on the product user inter-
face or in the communication product (e.g. SMADataManager).
The blue LED flashes slowly
for approx. one minute
Communication connection is being established
The inverter is establishing a connection to a local network or is es-
tablishing a direct connection to an end device via Ethernet (e.g.
computer, tablet PC or smartphone).
The blue LED flashes quickly
for approx. two minutes
(0.25s on and 0.25s off).
WPS active
The WPS function is active.
The blue LED is glowing Communication active
There is an active connection with a local network or there is a di-
rect connection with an end device via Ethernet (e.g. computer,
tablet PC or smartphone).