SMA SUNNY BOY 3000-US User manual

SB30-40US-IUS103030 | TBUS-SB30_40US | Version 3.0
EN
PV Inverter
SUNNY BOY 3000-US / 3800-US / 4000-US
Installation Guide

SMA America, LLC Legal Restrictions
Installation Guide SB30-40US-IUS103030 3
Copyright © 2010 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.
SMA America,LLC makes no 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 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 reserves 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 is under license.
SMA America, LLC
3801 N. Havana Street
Denver, CO 80239 U.S.A.

Important Safety Instructions SMA America, LLC
4 SB30-40US-IUS103030 Installation Guide
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
This manual contains important instructions for Sunny Boy inverter, that must be followed during
installation and maintenance of the inverter.
The Sunny Boy 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 Sunny Boy. To reduce the risk of personal injury and to ensure the safe installation and
operation of the Sunny Boy, you must carefully read and follow all instructions, cautions and warnings
in this installation guide.
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
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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 installation guide:
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 it‘s documentation.
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 product’s documentation before working on it. Follow all safety precautions
and instructions as described in the documentation.
UL1741 is the standard applied by Underwriters Laboratories to the Sunny Boy to certify
that it meets the requirements of the National Electrical Code® and IEEE-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.

General Warnings SMA America, LLC
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General Warnings
General Warnings
All electrical installations must be done in accordance with the local and National
Electrical Code® ANSI/NFPA 70. For installation in Canada the installations must be done
in accordance with applicable Canadian standards.
The Sunny Boy 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 Sunny Boy, read all of the instructions, cautions, and warnings
on the Sunny Boy in this installation guide.
Before connecting the Sunny Boy to the electrical utility grid, contact the local utility
company. This connection must be made only by qualified personnel.
Wiring of the Sunny Boy must be made by qualified personnel only.

SMA America, LLC Table of Contents
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Table of Contents
1 Notes on this manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.1 Validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.2 Target group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.3 Storage of the documentation . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.4 Additional information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.5 Nomenclature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.1 Appropriate usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.2 Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.3 Installation overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3 Unpacking and inspection. . . . . . . . . . . . . . . . . . . . . . . . . 15
3.1 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4 AC Voltage configuration . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.1 Opening the Sunny Boy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.2 Locating internal components . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.3 Automatic grid voltage detection . . . . . . . . . . . . . . . . . . . . . . . 19
4.4 Utility configuration jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5 Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.1 Selecting a mounting location. . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.2 Dimensions of the Sunny Boy and DC Disconnect . . . . . . . . . . 26
5.3 Mounting the Sunny Boy with a wall mounting bracket . . . . . . 27
5.3.1 Possibilities for mounting the wall mounting bracket . . . . . . . . . . . . . . . . . . . 28
5.3.2 Mounting the wall mounting bracket. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.4 Mounting the SMA DC Disconnect. . . . . . . . . . . . . . . . . . . . . . 32
5.5 Mounting the Sunny Boy onto the wall mounting bracket . . . . 32

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6 Electrical connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6.1 Without SMA DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.2 With SMA DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.3 Bottom view and dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . 36
6.4 Opening the Sunny Boy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
6.5 Opening the SMA DC Disconnect . . . . . . . . . . . . . . . . . . . . . . 37
6.6 AC wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
6.6.1 Without SMA DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
6.6.2 With SMA DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
6.7 DC wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
6.7.1 DC connection requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
6.7.2 DC input grounding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
6.7.3 DC wiring without SMA DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
6.7.4 DC wiring with SMA DC Disconnect. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
6.7.5 DC connection with additional DC distribution . . . . . . . . . . . . . . . . . . . . . . . 55
6.8 Communication wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
6.8.1 RS485 communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
6.9 Closing the Sunny Boy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
6.10 Closing the SMA DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . 61
7 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
8 Displays and messages . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
8.1 LED operation indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
8.2 LED fault indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
8.3 Status messages on the LCD display. . . . . . . . . . . . . . . . . . . . . 69
8.3.1 LCD display language selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
8.4 Communication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
8.5 Measuring channels and parameters . . . . . . . . . . . . . . . . . . . . 72
8.5.1 Measuring channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
8.5.2 Operating mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

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8.5.3 Sunny Boy operating parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
9 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
9.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
9.2 Error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
10 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
10.1 Cleaning the fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
10.2 Cleaning the handle covers . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
10.3 Checking the DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . 82
10.4 Testing the fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
10.5 Exchanging the fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
10.5.1 Exchanging the GFDI fuse within the Sunny Boy . . . . . . . . . . . . . . . . . . . . . 84
10.5.2 Exchanging PV string fuses within the SMA DC Disconnect . . . . . . . . . . . . . 85
11 Technical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
11.1 FCC compliance information . . . . . . . . . . . . . . . . . . . . . . . . . . 87
11.2 Sunny Boy wiring diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
11.3 Sunny Boy 3000-US. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
11.4 Sunny Boy 3800-US. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
11.5 Sunny Boy 4000-US. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
11.5.1 SMA DC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
11.6 Trip limits/trip times. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
11.7 Torque values and wire sizes . . . . . . . . . . . . . . . . . . . . . . . . . . 96
11.8 FCC compliance information . . . . . . . . . . . . . . . . . . . . . . . . . . 96
12 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
13 Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

SMA America, LLC
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