SMA Sunny Boy SB 5000US User manual

SB50US-80US-eng-IUS112633 | TBUS-SB50_60_70US | Version 3.3
CA
US
PV Inverter
SUNNY BOY 5000-US / 6000-US / 7000-US / 8000-US
Installation Guide

SMA America, LLC Legal Restrictions
Installation Guide SB50US-80US-eng-IUS112633 3
Copyright © 2011 SMA America,LLC. All rights reserved.
No part of this document may be reproduced, stored in a retrieval system, or transmitted, in any form
or by any means, electronic, mechanical, photographic, magnetic or otherwise, without the prior
written permission of SMA America,LLC.
Neither SMA America,LLC nor SMA Solar Technology Canada Inc. makes representations, 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 warranties are expressly disclaimed. Neither SMA America,LLC nor
its distributors or dealers nor SMA Solar Technology Canada Inc. 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
SMAAmerica,LLC and SMA Solar Technology Canada Inc. reserve the right to make changes
without notice and 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.
All trademarks are recognized even if these are not marked separately. Missing designations do not
mean that a product or brand is not a registered trademark.
The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and
any use of such marks by SMA America,LLC and SMA Solar Technology Canada Inc. is under
license.
SMA America, LLC
3801 N. Havana Street
Denver, CO 80239 U.S.A.
SMA Solar Technology Canada Inc.
2425 Matheson Blvd. E, 8th Floor
Mississauga, ON L4W 5K5, Canada

Important Safety Instructions SMA America, LLC
4 SB50US-80US-eng-IUS112633 Installation Guide
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
This manual contains important instructions for the following products:
•Sunny Boy
This manual must be followed during installation and maintenance.
The product is designed and tested according to international safety requirements, but as with all
electrical and electronic equipment, certain precautions must be observed when installing and/or
operating the product. To reduce the risk of personal injury and to ensure the safe installation and
operation of the product, you must carefully read and follow all instructions, cautions and warnings
in this manual.
Warnings in this document
A warning describes a hazard to equipment or personnel. It calls attention to a procedure or practice,
which, if not correctly performed or adhered to, could result in damage to or destruction of part or all
of the SMA equipment and/or other equipment connected to the SMA equipment or personal injury.
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 is used to address practices not related to personal injury.

SMA America, LLC Important Safety Instructions
Installation Guide SB50US-80US-eng-IUS112633 5
Other symbols in this document
In addition to the safety and hazard symbols described on the previous pages, the following symbol
is also used in this manual:
Markings on this product
The following symbols are used as product markings with the following meanings.
Information
This symbol accompanies notes that call attention to supplementary information that you
must know and use to ensure optimal operation of the system.
Warning regarding dangerous voltage
The product works with high voltages. All work on the product must only be performed
as described in the documentation of the product.
Electric arc hazards
The product has large electrical potential differences between its conductors. Arc flashes
can occur through air when high-voltage current flows. Do not work on the product
during operation.
Beware of hot surface
The product can become hot during operation. Do not touch the product during
operation.
Observe the operating instructions
Read the documentation of the product before working on it. Follow all safety
precautions and instructions as described in the documentation.
This inverter is evaluated to UL 1741, which includes assessment to all of the
requirements of IEEE1547 and IEEE1547.1, which are an outgrowth and further
development of the IEEE recommended practices and guidelines contained in IEEE Std.
929-2000. IEEE 929-2000 provides recommendations regarding the proper equipment
and functionality necessary to ensure compatible operation when power generation is
connected to the utility grid. The inverter is additionally evaluated to the
NationalElectricalCode® and the Canadian Electrical Code® CSA C22.2 No.
107.1‑1.

General Warnings SMA America, LLC
6 SB50US-80US-eng-IUS112633 Installation Guide
General warnings
General warnings
All electrical installations must be done in accordance with the local and
NationalElectrical Code® ANSI/NFPA 70 or the Canadian Electrical Code®
CSAC22.1. This document does not and is not intended to replace any local, state,
provincial, federal or national laws, regulation or codes applicable to the installation and
use of the product, including without limitation applicable electrical safety codes. All
installations must conform with the laws, regulations, codes and standards applicable in
the jurisdiction of installation. SMA assumes no responsibility for the compliance or
noncompliance with such laws or codes in connection with the installation of the product.
The product contains no user-serviceable parts except for the fans on the bottom of the
enclosure and the filters behind the fans as well as the handle covers on the sides of the
unit. For all repair and maintenance, always return the unit to an authorized SMA Service
Center.
Before installing or using the product, read all of the instructions, cautions, and warnings in
this manual.
Before connecting the product to the electrical utility grid, contact the local utility company.
This connection must be made only by qualified personnel.
Wiring of the product must be made by qualified personnel only.

SMA America, LLC Table of Contents
Installation Guide SB50US-80US-eng-IUS112633 7
1 Information on this Guide . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.1 Validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.2 Target Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.3 Storing the Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.4 Additional Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.5 Nomenclature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.1 Appropriate Usage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.2 Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.3 Installation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3 Unpacking and Inspection. . . . . . . . . . . . . . . . . . . . . . . . . 16
3.1 Scope of Delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4 AC Voltage Configuration . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.1 Opening the Sunny Boy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.2 Locating Internal Component Parts . . . . . . . . . . . . . . . . . . . . . . 19
4.3 AC Voltage Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.4 Jumper for System Configuration . . . . . . . . . . . . . . . . . . . . . . . 23
5 Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.2 Requirements for the Mounting Location. . . . . . . . . . . . . . . . . . 26
5.3 Mounting with Wall Mounting Bracket. . . . . . . . . . . . . . . . . . . 28
5.3.1 Possibilities for Mounting the Wall Mounting Bracket. . . . . . . . . . . . . . . . . . 30
5.3.2 Mounting the Wall Mounting Bracket. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.3.3 Mounting the SMA DC Disconnect. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5.3.4 Mounting the Sunny Boy on a Wall Mounting Bracket . . . . . . . . . . . . . . . . 33
6 Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6.1 Connection Area of the Sunny Boy. . . . . . . . . . . . . . . . . . . . . . 36

Table of Contents SMA America, LLC
8 SB50US-80US-eng-IUS112633 Installation Guide
6.1.1 Wiring without SMA DC Disconnect. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
6.1.2 Wiring with SMA DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
6.2 Opening the Sunny Boy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
6.3 Opening the SMA DC Disconnect . . . . . . . . . . . . . . . . . . . . . . 39
6.4 AC Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
6.4.1 AC Connection Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
6.4.2 AC Connection without SMA DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . 41
6.4.3 AC Wiring with SMA DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
6.5 DC Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
6.5.1 DC Connection Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
6.5.2 DC Input Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
6.5.3 DC Wiring without SMA DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
6.5.4 DC Wiring with SMA DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
6.5.5 DC Connection with Additional DC Distribution . . . . . . . . . . . . . . . . . . . . . . 56
6.6 Communication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
6.7 Closing the Sunny Boy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
6.8 Closing the SMA DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . 59
7 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
8 Displays and Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . 62
8.1 LED Operation Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
8.2 LED Fault Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
8.3 Status Messages on the LCD Display . . . . . . . . . . . . . . . . . . . . 70
8.3.1 LCD Display Language Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
8.4 Measuring Channels and Parameters. . . . . . . . . . . . . . . . . . . . 72
8.4.1 Measuring Channels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
8.4.2 Operating Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
8.4.3 Operating Parameters of the Sunny Boy. . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
8.4.4 Operating Parameters of the Sunny Boy. . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
8.4.5 Fixed Operating Parameters of the Sunny Boy . . . . . . . . . . . . . . . . . . . . . . . 77

SMA America, LLC Table of Contents
Installation Guide SB50US-80US-eng-IUS112633 9
9 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
9.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
9.2 Error Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
10 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
10.1 Cleaning the Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
10.2 Cleaning the Handle Covers . . . . . . . . . . . . . . . . . . . . . . . . . . 82
10.3 Checking the DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . 82
10.4 Checking the Fans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
10.5 Exchanging the Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
10.5.1 Exchanging the GFDI Fuse within the Sunny Boy . . . . . . . . . . . . . . . . . . . . . 85
10.5.2 Exchanging PV String Fuses within the SMA DC Disconnect . . . . . . . . . . . . 86
11 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
11.1 FCC Compliance Information . . . . . . . . . . . . . . . . . . . . . . . . . . 88
11.2 Sunny Boy Circuit Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
11.2.1 Without SMA DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
11.2.2 With SMA DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
11.3 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
11.4 Sunny Boy 5000-US (SB 5000US and SB 5000US-11). . . . . 91
11.5 Sunny Boy 6000-US (SB 6000US and SB 6000US-11). . . . . 93
11.6 Sunny Boy SB 7000-US (SB 7000US and SB 7000US-11) . . 95
11.7 Sunny Boy SB 8000-US (SB 8000US and SB 8000US-11) . . 97
11.7.1 SMA DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
11.8 Trip Limits/Trip Times. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
11.9 Torque Values and Cable Sizes . . . . . . . . . . . . . . . . . . . . . . . 100
12 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
13 Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

SMA America, LLC Information on this Guide
Installation Guide SB50US-80US-eng-IUS112633 11
1 Information on this Guide
1.1 Validity
This guide describes the mounting, installation, commissioning and maintenance of the following SMA
inverters:
• Sunny Boy 5000-US (SB 5000US and SB 5000US-11)
• Sunny Boy 6000-US (SB 6000US and SB 6000US-11)
• Sunny Boy 7000-US (SB 7000US and SB 7000US-11)
• Sunny Boy 8000-US (SB 8000US and SB 8000US-11)
This guide does not contain any information on the devices that are connected to the Sunny Boy.
Information concerning the connected devices is available from the manufacturers of the devices.
1.2 Target Group
This guide is for qualified personnel. Qualified personnel have received training and have
demonstrated skills and knowledge in the construction and operation of this device. Qualified
personnel are trained to deal with the dangers and hazards involved in installing electric devices.
1.3 Storing the Documentation
Store all manuals for the Sunny Boy in such a way that they may be accessed at any time.
1.4 Additional Information
Additional information on specific topics can be found in the download area at
www.SMA‑America.com.
1.5 Nomenclature
In this document, SMA America Production, LLC and SMA Solar Technology Canada Inc. will be
referred to as SMA.

Safety SMA America, LLC
12 SB50US-80US-eng-IUS112633 Installation Guide
2Safety
2.1 Appropriate Usage
The Sunny Boy is a PV inverter which converts the DC current of the PV array to AC current and feeds
it into the power distribution grid. The Sunny Boy is suitable for use with fuel cells, small wind power
plants and other DC current sources. The Sunny Boy takes the current from a DC source and converts
it into AC power for the power distribution grid. This power is then supplied to the local consumers
(C). Surplus energy is fed into the power distribution grid (E). Due to the power that is consumed by
the local devices, the amount of power required from the power distribution grid is reduced. An
energy surplus may even result in the energy meter (D) of your plant running backward. This power
may also be recorded as power credits by the electric utility company depending on the
interconnection agreement.
Principle of a PV Plant with a Sunny Boy
Anti-Islanding Protection
A stand-alone grid is a status. It occurs when the power distribution grid is switched off and the Sunny
Boy is in operation. For this to happen, the remaining load must be resonant at 60 Hz and exactly
match the power of the Sunny Boy. Although the appearance of these conditions is extremely unlikely,
the Sunny Boy has an active safety algorithm to protect against islanding. The effect of this is that, in
the event of the power distribution grid being switched off, the PV plant does not supply any power
to a symmetrical load that is resonant at 60 Hz. In addition, the Sunny Boy regularly feeds leading
and lagging reactive currents into the power distribution grid. This procedure is checked by the
certification body, in order to destabilize and switch off stand-alone grid status.
Item Description
A PV array
B Sunny Boy with SMA DC Disconnect
C Local consumers
D Energy meter
E Power distribution grid