SMA SUNNY ISLAND 5048-US Parts list manual

SI5048U-TUS121440 | TBEN-SI5048U | Version 4.0
US
Off-Grid Inverter
SUNNY ISLAND 5048-US
Technical Description

SMA America, LLC Legal Restrictions
Technical Description SI5048U-TUS121440 3
Copyright © 2012 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 doesn‘t make 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 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.
SMA America, LLC
3801 N. Havana Street
Denver, CO 80239 U.S.A.

Important Safety Instructions SMA America, LLC
4 SI5048U-TUS121440 Technical Description
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
This manual contains important instructions for the following products:
• Sunny Island 5048-US
This manual must be followed during installation and maintenance.
The Sunny Island 5048-US 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 Island 5048-US. To reduce the risk of personal injury and to ensure the
safe installation and operation of the Sunny Island 5048-US, 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
Technical Description SI5048U-TUS121440 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.
UL1741 is the standard applied by Underwriters Laboratories to the product 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
6 SI5048U-TUS121440 Technical Description
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 Sunny Island 5048-US, 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 Sunny Island 5048-US contains no user-serviceable parts. For all repair and
maintenance, always return the unit to an authorized SMA Service Center.
Before installing or using the Sunny Island 5048-US, read all of the instructions, cautions,
and warnings in this manual.
Before connecting the Sunny Island 5048-US to the electrical utility grid, contact the local
utility company. This connection must be made only by qualified personnel.
Wiring of the Sunny Island 5048-US must be made by qualified personnel only.

SMA America, LLC Table of Contents
Technical Description SI5048U-TUS121440 7
Table of Contents
1 Notes on this Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
1.1 Area of validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
1.2 Target Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
1.3 Additional Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
1.4 Nomenclature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2 The Sunny Island 5048U . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.1 Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.2 At a Glance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2.3 Scope of Delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2.4 Required Tools and Resources . . . . . . . . . . . . . . . . . . . . . . . . . 25
2.5 Identifying the Sunny Island . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3 Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.1 Important Notes regarding Operation . . . . . . . . . . . . . . . . . . . 27
3.2 Potential Hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4 Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
4.1 Selecting the Mounting Location. . . . . . . . . . . . . . . . . . . . . . . . 30
4.2 Mounting the Sunny Island with a Wall Mounting Bracket . . . 33
4.2.1 Mounting the Sunny Island on a Stone Wall . . . . . . . . . . . . . . . . . . . . . . . . 34
4.2.2 Mounting the Sunny Island Using Wall Studs. . . . . . . . . . . . . . . . . . . . . . . . 36
5 Opening and Closing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5.1 Opening the Sunny Island . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5.2 Closing the Sunny Island. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
6 Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
6.1 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

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8 SI5048U-TUS121440 Technical Description
6.2 DC terminal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
6.2.1 Safety Precautions/Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
6.2.2 Cable Sizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
6.2.3 Cable Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
6.2.4 Connecting the Sunny Island to the DC side. . . . . . . . . . . . . . . . . . . . . . . . . 45
6.3 AC Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
6.3.1 Line Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
6.3.2 AC1 (Loads/Sunny Boys) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
6.3.3 AC2 (Generator/Grid) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
6.4 Additional Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
6.4.1 Battery Temperature Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
6.4.2 Battery Current Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
6.4.3 Communication for Multi-device Connection . . . . . . . . . . . . . . . . . . . . . . . . 53
6.4.4 Multi-function Relay 1 and 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
6.4.5 BatVtgOut Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
6.4.6 DigIn Digital Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
6.5 Interface for External Communication. . . . . . . . . . . . . . . . . . . . 60
6.5.1 Connection of the Interface for External Communication . . . . . . . . . . . . . . . 60
7 Control Elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
7.1 Display Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
7.2 DC Circuit Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
7.3 Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
7.4 Meaning of the Light Emitting Diodes (LED's) . . . . . . . . . . . . . . 65
7.5 SD Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
8 Initial Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
8.1 Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
8.2 Starting the Quick Configuration Guide (QCG). . . . . . . . . . . . 66
8.3 Connecting the Battery Current Sensor. . . . . . . . . . . . . . . . . . . 70

SMA America, LLC Table of Contents
Technical Description SI5048U-TUS121440 9
9 Switching On and Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
9.1 Switching on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
9.2 Stopping (Standby). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
9.3 Switching off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
9.4 Disconnecting the Device from Voltage Sources. . . . . . . . . . . . 74
9.5 Reactivating the Device Following Automatic Shutdown . . . . . 74
10 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
10.1 Menu Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
10.2 Changing Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
10.3 Direct Access (to the parameters). . . . . . . . . . . . . . . . . . . . . . . 81
10.4 Compact Meters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
10.5 Entering the Installer Password . . . . . . . . . . . . . . . . . . . . . . . . . 85
10.6 Display Messages (Overview) . . . . . . . . . . . . . . . . . . . . . . . . . 87
10.7 Parameter Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
10.8 Display of Events. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
10.9 Display of Warnings and Failures. . . . . . . . . . . . . . . . . . . . . . . 91
11 Archiving Data on an SD Card . . . . . . . . . . . . . . . . . . . . . 92
11.1 Inserting the SD Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
11.2 Removing the SD Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
11.3 Saving and Loading Parameters. . . . . . . . . . . . . . . . . . . . . . . . 96
11.4 Writing Log Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
11.5 Status Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
11.6 Updating the Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
12 Additional Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
12.1 Load Shedding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
12.2 Sleep Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
12.3 Time-Controlled Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Table of Contents SMA America, LLC
10 SI5048U-TUS121440 Technical Description
12.4 Overload and Short-Circuit Behavior . . . . . . . . . . . . . . . . . . . 103
12.5 Device Faults and Autostart . . . . . . . . . . . . . . . . . . . . . . . . . . 103
12.6 Automatic Frequency Control (AFC). . . . . . . . . . . . . . . . . . . . 104
12.7 Time-Controlled Standby. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
12.8 Reaction in Case of Faults in a 3-phase system . . . . . . . . . . . 104
13 Battery Management. . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
13.1 Battery Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
13.2 Start Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
13.3 State of Charge (SOC) and State of Health (SOH) . . . . . . . . 106
13.4 Charge Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
13.4.1 Boost Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
13.4.2 Full Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
13.4.3 Equalization Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
13.4.4 Manual Equalization Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
13.4.5 Silent Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
13.5 Battery Preservation Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
13.6 Battery Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
13.7 Battery Lead Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
14 Connecting External Sources . . . . . . . . . . . . . . . . . . . . . 114
14.1 Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
14.1.1 Parallel Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
14.1.2 Generator Start Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
14.1.3 Generator Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
14.1.4 Manual Generator Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
14.1.5 Automatic Generator Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
14.1.6 Limits and Power Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
14.1.7 Run Times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
14.1.8 Operation in Conjunction with PV Inverters. . . . . . . . . . . . . . . . . . . . . . . . . 125
14.1.9 Stopping the Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125