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SB11_12_17-IEN100132 | IMEN-SB11_17 | Version 3.2
EN
PV Inverters
SUNNY BOY 1100 / 1200 / 1700
Installation Guide
SMA Solar Technology AG Table of Contents
Installation Guide SB11_12_17-IEN100132 3
Table of Contents
1 Notes on this Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 Area of Validity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Target Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3 Additional Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.4 Symbols Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Appropriate Usage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3 Unpacking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1 Packing List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.2 Identifying the Sunny Boy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4 Installing the Device. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.1 Selecting the Mounting Location. . . . . . . . . . . . . . . . . . . . . . . . 11
4.2 Mounting the Sunny Boy with a Wall Mounting Bracket . . . . . 13
5 Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.1 Overview of the Connection Area . . . . . . . . . . . . . . . . . . . . . . 15
5.1.1 Exterior View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.1.2 Interior View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.2 Connecting the Sunny Boy to the public grid (AC). . . . . . . . . . 17
5.3 Setting the Display Language . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.4 Communication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.5 Connecting the PV Generator (DC) . . . . . . . . . . . . . . . . . . . . . 23
5.6 Setting the installation country . . . . . . . . . . . . . . . . . . . . . . . . . 25
6 Commissioning the Sunny Boy . . . . . . . . . . . . . . . . . . . . . 26
6.1 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Table of Contents SMA Solar Technology AG
4 SB11_12_17-IEN100132 Installation Guide
6.2 Blink Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
7 Opening and Closing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
7.1 Opening the Sunny Boy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
7.2 Closing the Sunny Boy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
8 Maintenance and Cleaning. . . . . . . . . . . . . . . . . . . . . . . . 35
8.1 Check the Electronic Solar Switch for wear . . . . . . . . . . . . . . . 35
9 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
9.1 The red LED is continuously on . . . . . . . . . . . . . . . . . . . . . . . . . 36
9.1.1 Checking the PV Generator for Ground Fault. . . . . . . . . . . . . . . . . . . . . . . . 36
9.1.2 Checking the Function of the Varistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
10 Decommissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
10.1 Removing the Sunny Boy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
10.2 Packaging the Sunny Boy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
10.3 Storing the Sunny Boy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
10.4 Disposing of the Sunny Boy . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
11 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
12 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
13 Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
SMA Solar Technology AG Notes on this Manual
Installation Guide SB11_12_17-IEN100132 5
1 Notes on this Manual
This manual describes how to mount, install, commission and service the Sunny Boy 1100 (SB 1100),
Sunny Boy 1200 (SB 1200) and Sunny Boy 1700 (SB 1700).
Store this manual where it can be accessed at all times.
1.1 Area of Validity
This manual applies to the following SMA inverters:
Sunny Boy 1100 (discontinued model),
Sunny Boy 1200 (available on request),
Sunny Boy 1700.
1.2 Target Group
This manual is for qualified personnel. The tasks described in this manual may only be performed by
qualified personnel.
1.3 Additional Information
You will find further information on special topics such as designing a line circuit breaker or the
description of the operating parameters in the download area at www.SMA.de/en.
Refer to the user manual for detailed information on troubleshooting and operating the Sunny Boy.
Notes on this Manual SMA Solar Technology AG
6 SB11_12_17-IEN100132 Installation Guide
1.4 Symbols Used
The following types of safety instructions and general information appear in this document as
described below:
G
DANGER!
DANGER indicates a hazardous situation which, if not avoided, will result in death or
serious injury.
WARNING!
WARNING indicates a hazardous situation which, if not avoided, could result in death or
serious injury.
CAUTION!
CAUTION indicates a hazardous situation which, if not avoided, could result in minor or
moderate injury!
NOTICE!
NOTICE indicates a situation that can result in property damage if not avoided.
Information
Information provides tips that are valuable for the optimal installation and operation of
your product.
SMA Solar Technology AG Security
Installation Guide SB11_12_17-IEN100132 7
2 Security
2.1 Appropriate Usage
The Sunny Boy is a PV inverter, which converts the DC current of the PV generator to AC current and
feeds it into the public grid.
Principle of a PV system with this Sunny Boy
The Sunny Boy may only be operated with PV generators (modules and cabling) of protection
class II. Do not connect any sources of energy other than PV modules to the Sunny Boy.
When designing the PV system, ensure that the values comply with the permitted operating range of
all components at all times. The free design program "Sunny Design"
(www.SMA.de/en/SunnyDesign) will assist you. The manufacturer of the PV modules must have
approved the modules for use with this Sunny Boy. You must also ensure that all measures
recommended by the module manufacturer for long-term maintenance of the module properties are
taken (see also Technical Information "Module Technology", in the download area of
www.SMA.de/en).
Do not use the Sunny Boy for purposes other than those described here. Alternative uses,
modifications to the Sunny Boy or the installation of components not expressly recommended or sold
by the manufacturer void the warranty claims and operation permission.
Security SMA Solar Technology AG
8 SB11_12_17-IEN100132 Installation Guide
Certified Countries
The Sunny Boy 1100 / 1200 / 1700 (with according configuration) fulfill the requirements specified
in the following standards and directives (dated: July/2009):
VDE 0126-1-1 (02.2006)
G83/1 (09.2003)
CER/06/190 (10.2006)
E 2750 (11.2004)
PPC (06.2006)
EN 50438 (12.2007)
C10/C11 (08.2003)
AS4777 (2005)
•MEA
IEC-utility Meeting 216
SMA Solar Technology can preset special grid parameters for other countries / installation locations
according to customer request, after evaluation by SMA Solar Technology.
You can later make modifications yourself by changing software parameters with respective
communication products (e.g. Sunny Data Control). A personal password is required for this, which
you can obtain from the Serviceline upon request.
SMA Solar Technology AG Security
Installation Guide SB11_12_17-IEN100132 9
2.2 Safety Instructions
DANGER!
Danger to life due to high voltages in the Sunny Boy!
All work on the Sunny Boy must only be carried out by qualified personnel.
The appliance is not to be used by children or persons with reduced physical, sensory
or mental capabilities, or lack of experience and knowledge, unless they have been
given supervision or instruction.
Children should be supervised to ensure that they do not play with the appliance.
CAUTION!
Parts of the enclosure can get hot - Risk of burn injuries!
Do not touch the enclosure of the Sunny Boy during operation.
NOTICE!
Foreign objects or water entering the Sunny Boy can damage the device!
Once the Electronic Solar Switch has been pulled out, the Sunny Boy only provides
protection rating IP21. The Sunny Boy is then no longer protected against water and
contamination with dirt!
In order that the protection rating IP65 is also provided during a temporary
decommissioning, proceed as follows:
Unplug all DC plug connectors and seal them with the protecting caps provided.
Attach the Electronic Solar Switch again.
Grounding the PV generator
Comply with the local requirements for grounding the modules and the PV generator. SMA
Solar Technology recommends to electrically bond the module frames, the racks and all
metal surfaces and ground these in order to have optimal protection of the system and
personnel.
Unpacking SMA Solar Technology AG
10 SB11_12_17-IEN100132 Installation Guide
3 Unpacking
3.1 Packing List
Check the delivery for completeness and for visible external damage, such as cracks in the enclosure
or in the display. Please contact your dealer if something is damaged or missing.
3.2 Identifying the Sunny Boy
You can identify the Sunny Boy by the type plate. The type plate is on the right side of the enclosure.
The serial number (serial No.) and the type (Type / Model) of the Sunny Boy are specified on the
type plate.
Object Quantity Description
A 1Sunny Boy
B 1 Wall mounting bracket
C 1 Electronic Solar Switch (ESS)
D 1Set of documents
E 2 1 installation guide, 1 user manual
F 1 Socket element
G 1 Threaded sleeve
H 1 Pressure screw PG13.5
I 1Sealing ring PG13.5
J 1 Fastening case PG13.5
K 1 Cable gland PG16
L 2 Protecting caps for DC connector
M 1 Protective cap for AC screw clamp
N 1 M6x12 cylinder head screw
O 2 Plastic washer M5 (replacement for lid)
P 1Jumper
SMA Solar Technology AG Installing the Device
Installation Guide SB11_12_17-IEN100132 11
4 Installing the Device
4.1 Selecting the Mounting Location
Observe the following conditions during mounting:
The installation method and mounting location must be suitable for the weight and dimensions
of the Sunny Boy (see section 11 "Technical Data" (page42)).
Mount on a solid surface.
The installation location must be accessible at all times.
Vertical installation or tilted backwards by max. 45°.
The connection area must point downwards.
Never install the device with a forward tilt.
Do not install horizontally.
Install at eye level to allow operating modes to be read.
DANGER!
Danger to life due to fire or explosion!
Despite careful construction, a fire can occur with electrical devices.
Do not mount the Sunny Boy on flammable construction materials.
Do not mount the Sunny Boy near highly flammable materials.
Do not mount the Sunny Boy in potentially explosive areas.
CAUTION!
Parts of the enclosure can get hot - Risk of burn injuries!
Mount the Sunny Boy in such a way that it cannot be touched inadvertently during
operation.
CAUTION!
Risk of injury due to the heavy weight of the Sunny Boy!
Take the weight of the Sunny Boy of approx. 25 kg into account for mounting.
Installing the Device SMA Solar Technology AG
12 SB11_12_17-IEN100132 Installation Guide
The ambient temperature should be below 40 °C to ensure optimal operation.
The Sunny Boy must be easy to remove from the mounting location at any time.
Do not expose the Sunny Boy to direct sunlight, so as to avoid power reduction due to excessive
heating.
In a living area, do not mount the unit on
plasterboard walls (or similar) in order to avoid
audible vibrations.
The Sunny Boy can make noises when in use which
can be regarded as a nuisance when installed in a
living area.
Observe the minimum clearances to walls, other
inverters or objects as shown in the diagram in
order to guarantee sufficient heat dissipation and to
have enough space for removing the Electronic
Solar Switch.
SMA Solar Technology AG Installing the Device
Installation Guide SB11_12_17-IEN100132 13
4.2 Mounting the Sunny Boy with a Wall Mounting Bracket
1. Use the wall mounting bracket as a drilling template and mark the position of the drill holes.
2. Attach the wall mounting bracket to the wall using
appropriate screws and washers.
CAUTION!
Risk of injury due to the heavy weight of the Sunny Boy!
Take the weight of the Sunny Boy of approx. 25 kg into account.
When mounting the bracket, use fastening material suitable for the material.
Installing the Device SMA Solar Technology AG
14 SB11_12_17-IEN100132 Installation Guide
3. Use the upper mounting clips to fit the Sunny Boy in
the wall mounting bracket so that it cannot be
pushed out of the wall mounting bracket from the
side.
4. Secure the Sunny Boy in position fastening the
supplied M6x12 screw.
5. Check that the unit is securely in place.
The Sunny Boy is now mounted on the wall.
SMA Solar Technology AG Electrical Connection
Installation Guide SB11_12_17-IEN100132 15
5 Electrical Connection
5.1 Overview of the Connection Area
5.1.1 Exterior View
The following figure shows the assignment of the individual enclosure openings on the bottom of the
Sunny Boy.
NOTICE!
Electrostatic discharges can damage the Sunny Boy!
Internal components of the Sunny Boy can be irreparably damaged by static discharge.
Ground yourself before touching a component.
Object Description
A Plug connectors for connecting the PV strings
B Socket for the connection of the Electronic Solar Switch (ESS) DC load
disconnection unit
C Cable feed-through for communication (with sealing plugs)
D Plug for AC connection
Electrical Connection SMA Solar Technology AG
16 SB11_12_17-IEN100132 Installation Guide
5.1.2 Interior View
The following diagram gives a schematic overview of the various components and connection points
inside the Sunny Boy with the lid removed:
Object Description
A Varistors, section 9.1.2 
B Connection area and sockets for communication (RS485, radio), section 5.4 
C Display
D PE (protective earth) connecting cable for cover
E Operating status LEDs
F Plug socket (AC), section 5.2 
G Tab for grounding the cable shield with RS485 communication
H PV input plugs (DC), section 5.5 
I Electronic Solar Switch (ESS) socket
SMA Solar Technology AG Electrical Connection
Installation Guide SB11_12_17-IEN100132 17
5.2 Connecting the Sunny Boy to the public grid (AC)
Cable Design
The conductor cross-section should be dimensioned in a way that output losses do not exceed 1% at
nominal power. Use "Sunny Design" (www.SMA.de/en/SunnyDesign) for this.
The maximum cable lengths relative to the conductor cross-section are shown in the following table.
The conductor cross-section required in individual cases depends on the following factors:
ambient temperature,
•routing method,
•UV resistance,
line losses,
valid installation guidelines of the respective country (of the installation site).
Cable Requirements
Connection requirements of the grid operator
Comply with the connection requirements of your utility operator.
Conductor cross-section Maximum cable length
SB 1100 SB 1200 SB 1700
1.5 mm² 21 m 18 m 15 m
2.5 mm² 35 m 30 m 22.5 m
Position Designation Value
A External diameter 9 ...17 mm
B Conductor cross-section max. 2.5 mm²
C Strip insulation 4 ... 5 mm
Electrical Connection SMA Solar Technology AG
18 SB11_12_17-IEN100132 Installation Guide
Load Disconnection Unit
You must install a separate line circuit breaker for each inverter in order to ensure that the inverter
can be securely disconnected under load. The maximal permissible rating is located in
section 11 "Technical Data" (page42)
Detailed information and examples for the design of a line circuit breaker can be found in the
Technical Information "Line Circuit Breaker" in the download area of www.SMA.de/en.
DANGER!
Danger to life due to fire!
When more than one inverter is connected to the same line circuit breaker, the protective
function of the line circuit breaker is no longer guaranteed. It can result in a cable fire or
the destruction of the inverter.
Never connect several inverters to a single line circuit breaker.
Comply with the maximum permissible fuse protection of the inverter when selecting
the line circuit breaker.
NOTICE!
Damaging of the Sunny Boy by using screw type fuse elements as load
disconnection unit!
A screw type fuse element, e.g. D system (Diazed) or D0 system (Neozed) is not a circuit
breaker, and may not be used as a load disconnection unit. A screw type fuse element is
only used as cable protection.
When disconnecting under load using a screw type fuse element, the Sunny Boy can be
damaged.
Use only a load disconnecting switch or a line circuit breaker as load disconnecting
unit.
DANGER!
Danger to life due to fire!
When a generator (Sunny Boy) and a
consumer are connected to the same line
circuit breaker, the protective function of the
line circuit breaker is no longer guaranteed.
The current from the Sunny Boy and the grid
can add up to overcurrent which is not
detected by the line circuit breaker.
Never connect loads between the Sunny Boy and the line circuit breaker without
protection.
Always install separate fuses for loads.
SMA Solar Technology AG Electrical Connection
Installation Guide SB11_12_17-IEN100132 19
Overview AC connection socket
Connection Procedure
1. Choose an appropriate screw fitting for the AC cable.
2. Check the grid voltage and compare it with "V
AC
" on the type plate.
The exact working range of the Sunny Boy is specified in the operating parameters. These can
be uploaded via a communication component or can be ordered from SMA Solar Technology.
3. Switch off the line circuit breaker and secure it to prevent it from being reactivated and ensure
that no voltage is present.
4. Strip approx. 30 mm from the AC cable.
5. Shorten L and N by 5 mm.
6. Strip the wires of the cable by 4 to 5 mm.
Object Description
A Socket element
B Threaded sleeve
C Sealing ring PG13.5
D Fastening case PG13.5
E Pressure screw for PG13.5 (for cable diameters between 9 and 13.5 mm)
F Cable gland PG16 (for cable diameters between 13.5 and 17 mm)
Electrical Connection SMA Solar Technology AG
20 SB11_12_17-IEN100132 Installation Guide
7. Lead the pressure screw and/or cable gland and socket tube via the AC cable.
8. Insert the protective earth PE (green-yellow) in the
screw terminal with the earth sign on the socket
element and tighten the screw.
9. Insert the neutral conductor N (blue) in the screw
terminal 1 on the socket and tighten the screw.
10. Place phase L (brown or black) into screw terminal
2 on the socket insert and tighten the screw.
11. Terminal 3 on the socket element remains unused.
12. Make sure the wires are securely connected.
Size used Procedure
PG13.5 •Push the sealing ring into
the fastening case.
Lead the pressure screw
PG13.5 and the
fastening case including
the sealing ring via the
AC cable.
Lead the threaded
sleeve via the AC cable.
PG16 Lead the cable gland
PG16 via the AC cable.
Lead the threaded
sleeve via the AC cable.
SMA Solar Technology AG Electrical Connection
Installation Guide SB11_12_17-IEN100132 21
13. Screw the threaded sleeve onto the socket element.
14. Screw the pressure screw tightly onto the threaded
sleeve.
AC connection socket has been screwed together.
15. Seal the socket element with the provided protecting cap if the Sunny Boy is not immediately
connected.
16. Insert the AC connection socket into the AC socket on the Sunny Boy. If necessary, remove the
protective cap beforehand.
17. Screw the AC connection socket's threaded ring
tightly onto the AC socket on the Sunny Boy. The
threaded ring acts as a seal and a cable grip for the
AC connection socket.
The AC cable is connected to the Sunny Boy.
Size used Procedure
PG13.5
The fastening case along with the sealing ring is pressed into the threaded
sleeve and can no longer be seen.
PG16
DANGER!
Danger to life due to high voltages in the Sunny Boy!
Do not switch on the line circuit breaker until the Sunny Boy is securely closed and
the PV generator has been connected.
Electrical Connection SMA Solar Technology AG
22 SB11_12_17-IEN100132 Installation Guide
5.3 Setting the Display Language
You can set the language of the display using the switches on the underside of the display assemblies
inside the Sunny Boy.
Proceed as follows to do so:
1. Open the Sunny Boy as described in section 7.1 "Opening the Sunny Boy" (page32).
2. Set the switches to the desired language as illustrated below.
3. Close the Sunny Boy as described in section 7.2 "Closing the Sunny Boy" (page33).
5.4 Communication
The Sunny Boy can be equipped with a communication interface (slot see section 5.1.2 "Interior
View" (page16)) in order to communicate with special data acquisition devices (e. g. Sunny
WebBox) or a PC with appropriate software (e.g. Sunny Data Control).
See the communication interface manual for a detailed wiring diagram and a description of the
mounting.
Language Switch S2 Switch S1
German B B
English B A
French A B
Spanish A A
SMA Solar Technology AG Electrical Connection
Installation Guide SB11_12_17-IEN100132 23
5.5 Connecting the PV Generator (DC)
Requirements for the modules of the connected strings:
same type
same number
identical alignment
identical tilt
The connecting wires of the PV modules must be equipped with plug connectors in order that
these DC plug connectors can be connected to the DC input sockets of the Sunny Boy.
A pre-assembled set for connecting the free cable ends of a string is available as optional
accessory from SMA Solar Technology (see section 12 "Accessories" (page46)).
The following limit values at the DC input of the Sunny Boy may not be exceeded:
Use of Adaptors
Adaptors (branch connectors) are not to be visible or freely accessible in the immediate
surrounding of the Sunny Boy.
The DC current flow may not be interrupted via adaptors.
Always disconnect the current flow first via the Electronic Solar Switch.
Sunny Boy Maximum input voltage Maximum input current
SB 1100 400 V (DC) 10 A (DC)
SB 1200 400 V (DC) 12.6 A (DC)
SB 1700 400 V (DC) 12.6 A (DC)
DANGER!
Risk of lethal electric shock or fire!
The maximum possible input current per string is limited by the plug connectors used. If the
plug connector is overloaded, an electric arc may occur and there is a fire risk.
Ensure that the input current for each string does not exceed the maximum flow
current of the plug connectors used.
Electrical Connection SMA Solar Technology AG
24 SB11_12_17-IEN100132 Installation Guide
Connection Procedure
1. Pull the Electronic Solar Switch downwards, slightly
towards the wall.
2. Check the connection cables of the PV modules for
correct polarity and compliance with the Sunny
Boy's maximum input voltage of 400 V (DC).
3. Check the strings for ground faults, as described in section 9.1.1 "Checking the PV Generator
for Ground Fault" (page36).
DANGER!
Danger to life due to high voltages in the Sunny Boy!
Before connecting the PV generator, ensure that the line circuit breaker is switched
off.
NOTICE!
Exceeding the maximum input voltage can destroy the Sunny Boy!
If the voltage of the PV modules exceeds the maximum input voltage of the Sunny Boy, it
can be destroyed by the overvoltage. All warranty claims become void.
Do not connect strings to the Sunny Boy with open circuit voltage greater than the
maximum input voltage of the Sunny Boy.
Check the system design.
DANGER!
Risk of lethal electric shock!
Do not connect strings with ground faults.
Firstly, clear the ground fault in the respective string.
SMA Solar Technology AG Electrical Connection
Installation Guide SB11_12_17-IEN100132 25
4. Connect faultless strings of the PV generator.
5. Close unused DC input sockets with the protective
caps provided.
6. Check the Electronic Solar Switch for wear, as
described in section 8.1 "Check the Electronic
Solar Switch for wear" (page35), and attach until
it audibly locks into place.
The PV generator is now connected.
5.6 Setting the installation country
Using the "Default" parameter you can set the installation country and/or the grid connection
standard valid for the country via a communication device (e.g. Sunny WebBox) or a PC with
appropriate software (e.g. Sunny Data Control). However, this is only required if the Sunny Boy was
originally ordered for another country. The standard to which the Sunny Boy was set upon delivery is
specified on the type plate.
NOTICE!
Manipulating the connector in the handle can damage the Electronic Solar
Switch!
The connector within the handle must remain movable in order to ensure proper contact.
Tightening the screw voids all warranty claims and creates a fire risk.
•Do not tighten the connector screw in the Electronic Solar Switch handle.
NOTICE!
The Electronic Solar Switch can be damaged if it is inserted incorrectly!
The Electric Solar Switch can be damaged by high voltages if it has not been attached
properly.
Press the handle firmly into place on the socket of the Electronic Solar Switch until it
audibly locks into place.
Check that the handle is securely in place.
Commissioning the Sunny Boy SMA Solar Technology AG
26 SB11_12_17-IEN100132 Installation Guide
6 Commissioning the Sunny Boy
1. Check the following requirements before commissioning:
device is securely in place
correct connection of the AC cable (grid)
full connection of the DC cables (PV strings)
unused DC plug connectors on the underside of the enclosure are sealed with protecting
caps
the enclosure lid is securely screwed in place
the Electronic Solar Switch (ESS) is securely plugged
the line circuit breaker is laid out correctly
2. Switch on the line circuit breaker.
The green LED is glowing or blinking if there is
enough radiation: commissioning has been
successful.
or:
The red or yellow LED is glowing or blinking:
there has been an error. Proceed to step 3.
3. Read section 9 "Troubleshooting" (page36) and,
if necessary, the user manual provided. The
meaning of the LED's as well as the error messages
and status messages on the display are described
in this section.
A Green LED In operation
B Red LED Ground fault or varistor
defective
C Yellow LED Disturbance
SMA Solar Technology AG Commissioning the Sunny Boy
Installation Guide SB11_12_17-IEN100132 27
6.1 Display
Feeding Operation
After fault-free grid connection of the Sunny Boy, it takes approximately one minute until the following
display messages are shown alternately. The display messages shown before only have the purpose
of indicating the initialization of the Sunny Boy and the process of controlling whether the power
supply requirements are fulfilled.
Initially, the energy generated on the respective
day and the current operating mode are displayed.
After 5 seconds or by tapping on the enclosure lid,
the current feed-in output and the input voltage
appear.
After a further 5 seconds, or when you tap again,
the total energy produced and the time the Sunny
Boy has been connected to the grid are displayed.
Then the cycle is restarted.
Disturbance
If a disturbance occurs, the message "Disturbance"
will be shown in the status bar.
The exact failure message follows.
For example, if the grid disturbance message
shown here is displayed immediately after
connection, it may be due to the fact that the AC
wire is not correctly connected or the line circuit
breaker has not been switched on yet.
If the disturbance was caused by a measured value
that does not correspond to the standard, the value
measured at the time of the disturbance is
displayed. If another measurement is possible, the
present value is displayed in the second line.
The precise meaning of the error and status messages are described in the Sunny Boy's user manual
provided.
E-today 0Wh
Mode MPP
Pac 903W
Vpv 260V
E-today 0Wh
Mode Disturbance
Disturbance
Vac-Bfr
at: 261W
present: 245V
Commissioning the Sunny Boy SMA Solar Technology AG
28 SB11_12_17-IEN100132 Installation Guide
PV overvoltage
1. Check DC voltage!
2. If the message occurs again, disconnect the Sunny Boy again and contact the Serviceline of
SMA Solar Technology (see section 13 "Contact" (page47)).
NOTICE!
Excessive DC input voltage can destroy the Sunny Boy!
Immediately disconnect the Sunny Boy from the grid!
1. Turn off the line circuit breaker.
2. Remove the Electronic Solar Switch.
3. Disconnect the DC plug connectors.
Result Action
The DC voltage is higher than the
maximum input voltage.
Contact the planner / installer of the PV
generator.
The DC voltage is lower than the
maximum input voltage.
Reconnect the Sunny Boy to the PV
generator as described in section
5.5 "Connecting the PV Generator (DC)"
(page23).
!PV-Overvoltage!
!DISCONNECT DC!
SMA Solar Technology AG Commissioning the Sunny Boy
Installation Guide SB11_12_17-IEN100132 29
6.2 Blink Codes
Overview
Feeding Operation
After a fault-free grid connection of the Sunny Boy, it
takes approximately one minute until the green LED is
continuously on. The blink codes shown before only have
the purpose of indicating the initialization of the Sunny
Boy and the process of controlling whether the power
supply requirements are fulfilled.
Green Red Yellow Status
glows continuously is not glowing is not glowing OK (feeding operation)
glows continuously is not glowing Disturbance
glows continuously OK (initialization)
Flashes quickly
(3 x per second)
is not glowing is not glowing OK (stop)
glows continuously is not glowing Disturbance
Flashes slowly
(1 x per second)
is not glowing is not glowing OK (waiting, grid monitoring)
glows continuously is not glowing Disturbance
Briefly goes out
(Approx. 1x per
second)
is not glowing is not glowing OK (derating)
glows continuously is not glowing Disturbance
is not glowing is not glowing is not glowing OK (night shutdown)
glows/flashes Disturbance
glows continuously is not glowing Disturbance
glows/flashes Disturbance
Commissioning the Sunny Boy SMA Solar Technology AG
30 SB11_12_17-IEN100132 Installation Guide
Disturbance or Fault
If the Sunny Boy detects a disturbance or fault, this event is indicated through a blink code of the
yellow and, where applicable, the red LEDs.
For example, if the yellow LED glows for 5 seconds immediately after connection, then goes out for
3 seconds and then flashes briefly twice, there is a grid fault. This can be due to the fact that either
the AC cable has not been connected correctly or the line circuit breaker has not yet been switched
on.
Explanation of the Blink Codes
For a detailed description of the blink codes, see the provided Sunny Boy user manual.
SMA Solar Technology AG Commissioning the Sunny Boy
Installation Guide SB11_12_17-IEN100132 31
PV overvoltage
(Yellow LED flashes 4 times quickly in succession)
1. Check DC voltage!
2. If the message occurs again, disconnect the Sunny Boy again and contact the Serviceline of
SMA Solar Technology (see section 13 "Contact" (page47)).
NOTICE!
Excessive DC input voltage can destroy the Sunny Boy!
Immediately disconnect the Sunny Boy from the grid!
1. Turn off the line circuit breaker.
2. Remove the Electronic Solar Switch.
3. Disconnect the DC plug connectors.
Result Action
The DC voltage is higher than the
maximum input voltage.
Contact the planner / installer of the PV
generator.
The DC voltage is lower than the
maximum input voltage.
Reconnect the Sunny Boy to the PV
generator as described in section
5.5 "Connecting the PV Generator (DC)"
(page23).
Opening and Closing SMA Solar Technology AG
32 SB11_12_17-IEN100132 Installation Guide
7 Opening and Closing
7.1 Opening the Sunny Boy
1. Pull the Electronic Solar Switch downwards, slightly
towards the wall.
2. Disconnect the PV generator from the Sunny Boy.
3. Check whether all LEDs and the display have gone out.
NOTICE!
Electrostatic discharges can damage the Sunny Boy!
Internal components of the Sunny Boy can be irreparably damaged by electrostatic
discharge.
Ground yourself before touching a component.
DANGER!
Danger to life due to high voltages in the Sunny Boy!
Before you open the Sunny Boy:
Switch off the line circuit breaker and secure it to prevent it from being reactivated.
DANGER!
Danger to life due to unsafe disconnection from the PV generator!
Safe disconnection from the PV generator is only guaranteed after removal of the Electronic
Solar Switch and of all DC plug connectors.
Remove the DC plug connector
immediately to completely disconnect
the PV generator from the Sunny Boy.
SMA Solar Technology AG Opening and Closing
Installation Guide SB11_12_17-IEN100132 33
4. Remove all screws from the enclosure lid and pull
the lid forward smoothly.
5. Remove the PE connection from the lid by loosening
the locking device of the PE connection on the lid.
The Sunny Boy is free of voltage and you can work
on it.
7.2 Closing the Sunny Boy
1. Connect the protective earth (PE) to the enclosure lid.
2. Secure the enclosure lid of the Sunny Boy by evenly
tightening the 4 lid screws.
3. Check the DC plug connector for correct polarity
and connect it.
DANGER!
Danger to life due to high voltages in the Sunny Boy!
The capacitors in the Sunny Boy require 15 minutes to discharge.
Wait 15 minutes before opening the Sunny Boy.
Opening and Closing SMA Solar Technology AG
34 SB11_12_17-IEN100132 Installation Guide
4. Check the Electronic Solar Switch for wear, as
described in section 8.1 "Check the Electronic
Solar Switch for wear" (page35), and attach until
it audibly locks into place.
5. Switch on the line circuit breaker.
6. Check whether the Sunny Boy's display and LED
display indicate normal operating mode (see
section 6 "Commissioning the Sunny Boy"
(page26)).
NOTICE!
Manipulating the connector in the handle can damage the Electronic Solar
Switch!
The connector within the handle must remain movable in order to ensure proper contact.
Tightening the screw voids all warranty claims and creates a fire risk.
•Do not tighten the connector screw in the Electronic Solar Switch handle.
NOTICE!
The Electronic Solar Switch can be damaged if it is inserted incorrectly!
The Electric Solar Switch can be damaged by high voltages if it has not been attached
properly.
Press the handle firmly into place on the socket of the Electronic Solar Switch until it
audibly locks into place.
Check that the handle is securely in place.
SMA Solar Technology AG Maintenance and Cleaning
Installation Guide SB11_12_17-IEN100132 35
8 Maintenance and Cleaning
Check the correct operation of the Sunny Boy at regular intervals. Impurities such as dust or pollen
can cause heat accumulation that can lead to yield losses. Also check the Sunny Boy and the cables
for visible external damage. Undertake repairs if necessary.
8.1 Check the Electronic Solar Switch for wear
Check the Electronic Solar Switch for wear before plugging it in.
Result Action
The metal tongues inside the connector
have no damage and no discoloration.
1. Attach the Electronic Solar Switch handle.
2. Commission the Sunny Boy.
The metal tongues inside the connector
have a brown discoloration or are burned
off.
The Electronic Solar Switch can no longer reliably
disconnect the DC side.
1. Replace the Electronic Solar Switch handle
before attaching it again (order number see
section 12 "Accessories" (page46).
2. Commission the Sunny Boy.
Troubleshooting SMA Solar Technology AG
36 SB11_12_17-IEN100132 Installation Guide
9 Troubleshooting
If the Sunny Boy displays other blink codes or display messages than those described in
section 6"Commissioning the Sunny Boy" (page26), refer to the associated user manual in order to
obtain the precise meaning of the display messages or the blink codes and, if necessary, the error
correction.
Do not undertake any repairs that are not described here, but rather use the 24-hour replacement
service (the Sunny Boy will be sent within 24 hours) and the repair service of SMA Solar Technology.
9.1 The red LED is continuously on
If the red LED of the status display is continuously on during operation, there is either a ground fault
in the PV generator or at least one of the varistors for the overvoltage protection is defective.
9.1.1 Checking the PV Generator for Ground Fault
1. Disconnect the Sunny Boy from both the DC and AC connections, as described in
section 7.1 "Opening the Sunny Boy" (page32).
2. Measure the voltages between the plus and minus
pole of a string against the ground potential.
If voltage is found, there is a ground fault in the
corresponding string.
NOTICE!
Excessive voltages can destroy the measuring device!
Only use measuring devices with a DC input voltage range up to at least 500 V.
DANGER!
Risk of lethal electric shock!
In case of a ground fault, the PV generator may carry high voltages.
Do not touch the frame of the PV generator.
Wait until no voltage can be measured.
Do not connect strings with ground faults to the Sunny Boy.
SMA Solar Technology AG Troubleshooting
Installation Guide SB11_12_17-IEN100132 37
The approximate position of the ground fault can be determined from the ratio of the measured
voltages between plus against ground potential and minus against ground potential.
Example:
The ground fault is between the second and third module in this case.
3. Repeat step 2 for each string.
The table illustrated below shows the various results and corresponding measures.
The ground fault check is finished.
Result Action
☑You have found a ground fault. The installer of the PV generator must
remedy the ground fault in the affected
string before you may reconnect the string
to the Sunny Boy.
•Do not reconnect the faulty string.
Close and commission the Sunny Boy as
described in section 7.2 "Closing the
Sunny Boy" (page33).
☑You have found no ground fault. It is likely that one of the thermally monitored
varistors is defective.
Check the varistors as described in section
9.1.2 "Checking the Function of the
Varistors" (page38).
Troubleshooting SMA Solar Technology AG
38 SB11_12_17-IEN100132 Installation Guide
9.1.2 Checking the Function of the Varistors
Varistors are wearing parts. Their functioning becomes restricted through aging or due to repeated
responses as a result of overvoltages. It is therefore possible that one of the thermally monitored
varistors has lost its protective function, and thus the red LED is lit.
Check the function of the varistors as described below:
1. Open the Sunny Boy as described in section 7.1 "Opening the Sunny Boy" (page32).
2. With the aid of a multimeter, determine for both
varistors in the installed state whether a conductive
connection exists between connectors B and C.
Position of varistors
You can determine the position of the varistors with the help of the illustration below.
Observe the following allocation of the
terminals:
Terminal A: outer terminal (varistor
connection with loop [crimp])
Terminal B: middle terminal
Terminal C: outer terminal (varistor
connection without loop [crimp])
Result Action
☑There is a conducting connection. There is probably another fault in the Sunny Boy.
Close the Sunny Boy as described in section
7.2 "Closing the Sunny Boy" (page33).
Contact the SMA Serviceline (see section
13 "Contact" (page47)).
SMA Solar Technology AG Troubleshooting
Installation Guide SB11_12_17-IEN100132 39
3. Insert an insertion tool into the openings of the
terminal contacts (1).
The terminals will loosen.
If you do not receive an insertion tool for operating
the terminal clamps with your replacement
varistors, contact SMA Solar Technology. The
terminal contacts can also be provisionally serviced
by a screwdriver with a 3.5 mm blade width.
4. Remove the varistor (2).
5. Insert new varistor.
The pole with the small loop (crimp) must be fitted
to terminal A (3) when remounting.
6. Close the Sunny Boy as described in section
7.2 "Closing the Sunny Boy" (page33).
The check of the varistors is completed.
☑There is no conducting
connection.
The respective varistor is not working and must be
replaced.
Varistor failure is generally due to influences which affect
all varistors similarly (temperature, age, induced
overvoltage). SMA Solar Technology recommends that
you replace both varistors.
The varistors are specially manufactured for use in the
Sunny Boy and are not commercially available. They must
be ordered directly from SMA Solar Technology (see
section 12 "Accessories" (page46)).
To replace the varistors, proceed to step 3.
NOTICE!
The Sunny Boy could be irreparably damaged by overvoltage!
If varistors are missing, the Sunny Boy is no longer protected against overvoltages.
Replacement varistors should be obtained as soon as possible.
•Do not operate the Sunny Boy without varistors in systems with a high risk of
overvoltages.
Result Action
Decommissioning SMA Solar Technology AG
40 SB11_12_17-IEN100132 Installation Guide
10 Decommissioning
10.1 Removing the Sunny Boy
1. Open the Sunny Boy as described in section 7.1 "Opening the Sunny Boy" (page32).
2. Remove all cables from the Sunny Boy.
3. Close the Sunny Boy: fasten the enclosure lid to the Sunny Boy with the 4 screws.
4. Loosen the lower screw between the Sunny Boy
und wall mounting bracket.
5. Remove the Sunny Boy from the wall mounting
bracket.
The Sunny Boy has been removed.
CAUTION!
Risk of injury due to the heavy weight of the Sunny Boy!
Take the weight of the Sunny Boy of approx. 25 kg into account.
SMA Solar Technology AG Decommissioning
Installation Guide SB11_12_17-IEN100132 41
10.2 Packaging the Sunny Boy
If possible, always package the Sunny Boy in the original packaging. If this is no longer available,
you can also use an equivalent box. The box must be completely closeable and made to support both
the weight and size of the Sunny Boy.
10.3 Storing the Sunny Boy
Store the Sunny Boy in a dry place where ambient temperatures are always between -25 °C and
+60 °C.
10.4 Disposing of the Sunny Boy
Dispose of the Sunny Boy at the end of its service life in accordance with the disposal regulations for
electronic waste which apply at the installation site at that time. Alternatively, send it back to SMA
Solar Technology with shipping paid by sender, and labeled "ZUR ENTSORGUNG" ("for disposal")
(see section 13 "Contact" (page47).
41

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