SMA Sunny Boy SB 700U User manual

Sunny Boy SB 700U
Installation Guide Version 1.1 SB700U-11:SE3207
TBE-SB07U

ii SMA America SB700U-11:SE3207

SB700U-11:SE3207 SMA America iii
Copyright © 2007 SMA America, Inc. 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, Inc.
SMA America 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 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 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.
SMA America, Incorporated
12438-C Loma Rica Drive
Grass Valley, California 95945
Tel [phone]
Fax [phone]
www.sma-america.com
Revision History
Rev.
No.
Date By Reason
0.1 Sept. 2, 2003 Mike Brazil Alpha draft
0.2 Oct. 16, 2003 Mike Brazil Beta draft
0.3 Nov. 12, 2003 Jeffrey Philpott Preliminary Release
1.0 March 22, 2004 Gerald Salisbury First official version
1.1 March 2, 2007 Diana Welzel Adjustment for new Certification

iv SMA America SB700U-11:SE3207
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
This manual contains important instructions for the Sunny Boy 700U 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.
Safety and Hazard Symbols
This symbol is used to call attention to important information that you
must have when installing and/or operating the Sunny Boy. Failure
to read and follow instructions marked with this symbol could result
in injury or death and/or damage to the equipment.
This symbol appears beside instructions and warnings that deal with
dangerous voltages that can injure or kill people who come in
contact with them.
This symbol appears beside instructions, cautions, and warnings that
deal with portions of the equipment that can operate at temperatures
high enough to cause burns.

SB700U-11:SE3207 SMA America v
Cautions and Warnings
WARNING:A Warning describes a hazard to person-
nel. 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.
CAUTION:A Caution describes a hazard to equipment. It
calls attention to an operating procedure or practice, which,
if not correctly performed or adhered to, could result in dam-
age to or destruction of part or all of the SMA equipment
and/or other equipment connected to the SMA equipment.
Warnings and Cautions may also be accompanied by one or more of the safety
and hazard symbols described above to indicate the type of hazard described
therein.
Other Symbols
In addition to the safety and hazard symbols described on the previous pages, the
following two symbols are also used in this Installation Guide:
This symbol accompanies notes that call attention to supplementary
information that you should know and use to ensure optimal
operation of the system.
This symbol appears beside terminations that are connected to earth-
ground.

vi SMA America SB700U-11:SE3207
General Warnings
All electrical installations must be done in accordance with the
local and National Electrical Code ANSI/NFPA 70.
The Sunny Boy contains no user-serviceable parts. Always return
the unit to an authorized SMA Service Center for repairs and
maintenance.
Before installing or using the Sunny Boy, read all of the
instructions, cautions, and warnings on the Sunny Boy, the PV
array, and in this Installation Guide.
You must not connect the Sunny Boy to the electrical utility grid
until you have received prior approval from the utility company.
This connection must be made only by qualified personnel.
PV arrays produce electrical energy when exposed to light and
thus can create an electrical shock hazard. Completely cover the
surface of all PV-arrays with opaque (dark) material before wiring
them.
The Sunny Boy has a heat sink on its top surface to help cool the
internal components. This heat sink can reach temperatures as
high as 158° F (70° C). To avoid the risk of burns, never touch
the Sunny Boy’s heat sink while the unit is in operation.
Warranty
All Sunny Boy SB 700U inverters sold in the USA have a five-year warranty, as
indicated on the warranty card included in the Sunny Boy shipping container. For
warranty coverage, or if you have questions about the Sunny Boy warranty, contact
SMA America at the address, telephone number, or Web site listed on page iii (to
send E-mail, see the Contact section of the SMA America Web site).

SB700U-11:SE3207 SMA America vii
Contents
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iii
Safety and Hazard Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iv
Cautions and Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
Other Symbols. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
General Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vi
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vi
1 Introduction
Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Installation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
2 Unpacking and Inspection
3 Mounting the Sunny Boy
Choosing a Mounting Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Dimensions and Recommended Clearances . . . . . . . . . . . . . . . . . . . 3-4
Mounting Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
4 Wiring and Connecting the Sunny Boy
Sequence of Connecting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Sunny Boy 700U Internal Components . . . . . . . . . . . . . . . . . . . . . . . 4-3
Opening the Sunny Boy 700U . . . . . . . . . . . . . . . . . . . . . . 4-3
Locating Internal Components . . . . . . . . . . . . . . . . . . . . . . . 4-3
Wiring the AC Output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
AC Connection Requirements . . . . . . . . . . . . . . . . . . . . . . . 4-6
Connecting the AC Wires . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Wiring the DC Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
DC Connection Requirements . . . . . . . . . . . . . . . . . . . . . . 4-10
Configuring the DC Input-Voltage Range . . . . . . . . . . . . . . 4-11
Connecting the DC Wires . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
Connecting Communication Cables . . . . . . . . . . . . . . . . . . . . . . . . 4-18
RS-485 Communication . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18
Replacing the Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20
5 Commissioning

viii SMA AmericaSB700U-11:SE3207
6 Displays and Messages
LED Operation Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
LED Fault Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Status Messages on the Display . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11
Sunny Display Language Selection . . . . . . . . . . . . . . . . . . 6-15
Communication Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16
Measuring Channels and Messages . . . . . . . . . . . . . . . . . . . . . . . . 6-18
Measuring Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18
Operating Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-19
Sunny Boy 700U Operating Parameters . . . . . . . . . . . . . . 6-20
7 Troubleshooting
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Error messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
8 Technical Specifications
FCC Compliance Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
Sunny Boy Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
Trip Limits / Trip Times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
Torque Values and Wire Sizes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5

SB700U-11:SE3207 SMA America 1-1
Section 1:
Introduction
This installation guide provides all the information needed to mount, wire, and
commission a Sunny Boy 700U grid-tied photovoltaic (PV) inverter.
Note:To help avoid problems during the installation, fa-
miliarize yourself with the installation process by reading
the entire Installation Guide before starting the installa-
tion.
WARNING:Lethal voltages are present at various
points in a PV system. For safety reasons, it is rec-
ommended that only trained professionals attempt
to install this equipment.

1-2 SMA America SB700U-11:SE3207
Product Overview
The Sunny Boy is a DC to AC grid-tied utility interactive inverter for use with
photovoltaic (PV). The SB 700U is additionally UL listed for the use with fuel cell,
wind turbine and other sources of DC power.
In general, the Sunny Boy takes power from a DC source (PV modules) and converts
it to AC power for the utility grid. This power is delivered first to local loads
(household appliances, lights, motor loads, etc.), with any excess power fed to the
utility. The power consumed by the local loads reduces the power needed from the
utility. Excess power may actually “spin the utility meter backwards” depending on
the type of meter in your system. This power may also be recorded as power credits
by the utility company depending on the interconnection agreement. An example of
basic system components is shown in Figure 1-1 (page 1-2).
Figure 1-1 Sunny Boy 700U Installed in a Utility Interactive PV System
Note:Policies vary from one utility company to another. Con-
sult with a representative of the local utility company before
planning and installing a PV system.
PV Array Sunny Boy 700U
Utility Grid
Meter