Off-Grid Inverter SUNNY ISLAND 4548-US / 6048-US Operating Manual SI4548-6048-US-BE-en-21 | Version 2.
SMA Solar Technology America LLC Legal Provisions Legal Provisions Copyright © 2015 SMA Solar Technology 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, be it electronic, mechanical, photographic, magnetic or otherwise, without the prior written permission of SMA Solar Technology America LLC.
Important Safety Instructions SMA Solar Technology America LLC Important Safety Instructions SAVE THESE INSTRUCTIONS This manual contains important instructions for the following products: • Sunny Island 4548-US / 6048-US This manual must be followed during installation and maintenance.
SMA Solar Technology America LLC Important Safety Instructions Markings on this Product The following symbols are used as product markings with the following meanings. Symbol Description 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.
General Warnings SMA Solar Technology America LLC General Warnings All electrical installations must be made 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, regulations or codes applicable to the installation and use of the product, including without limitation applicable electrical safety codes.
SMA Solar Technology America LLC Table of Contents Table of Contents 1 Information on this Document. . . . . . . . . . . . . . . . . . . . . . . . . . 15 1.1 1.2 1.3 1.4 Validity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Target Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Additional Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Terminology . . . . . . . . . . . . . . .
Table of Contents SMA Solar Technology America LLC 6.2.4 Connecting the Sunny Island on the DC Side . . . . . . . . . . . . . . . . . 46 6.3 AC Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 6.3.1 Cable Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 6.3.2 AC1 (Loads/Sunny Boys) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 6.3.3 AC2 (Generator/Grid) . . . . . . . . . . . . . . . . . . . . .
SMA Solar Technology America LLC Table of Contents 9.5 Recommissioning After Automatic Shutdown. . . . . . . . . . . . . . . . . . . 77 10 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 10.1 10.2 10.3 10.4 10.5 10.6 10.7 10.8 10.9 Menu Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Changing Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table of Contents 13.2 13.3 13.4 13.5 SMA Solar Technology America LLC Battery Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109 Start Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109 State of Charge (SOC) and State of Health (SOH) . . . . . . . . . . . . 109 Charge Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 13.5.1 Boost Charge . . . . . . . . . . . . . . . . . . . . . . .
SMA Solar Technology America LLC Table of Contents 14.2.7 Grid Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135 14.2.8 Disturbances. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135 14.2.9 Limitations and Power Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136 14.2.10 Operation Together with PV Inverters and Wind Power Inverters 136 14.3 Generator and Utility Grid. . . . . . . . . . . . . . . . . . . . .
Table of Contents 18.2 18.3 18.4 18.5 18.6 SMA Solar Technology America LLC Cleaning the Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156 Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156 Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156 Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157 Disposal . . . . .
SMA Solar Technology America LLC Table of Contents 20.4 Handling of Pending Errors during the Booting Procedure . . . . . . . 205 20.5 Display of Failures and Events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205 20.6 Events. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205 20.6.1 Category INV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205 20.6.2 Category BAT . . . . . . . . . . . . . . . . . . . . . . . .
Table of Contents 14 SI4548-6048-US-BE-en-21 SMA Solar Technology America LLC Operating Manual
SMA Solar Technology America LLC 1 Information on this Document 1 Information on this Document 1.1 Validity This document is valid for the following battery inverters as of firmware version 7.3: • Sunny Island 4548-US (SI 4548-US-10) • Sunny Island 6048-US (SI 6048-US-10) 1.2 Target Group This document is for trained electrically qualified persons.
2 Sunny Island 4548-US / 6048-US SMA Solar Technology America LLC 2 Sunny Island 4548-US / 6048-US 2.1 Properties The Sunny Island is a bidirectional inverter (battery inverter and battery charger) for off-grid systems. The Sunny Island supplies loads on the stand-alone grid side and charges the batteries with the energy from grid-feeding units connected on the AC side.
SMA Solar Technology America LLC 2 Sunny Island 4548-US / 6048-US The Sunny Island also has an integrated anti-islanding feature which prevents islanding on the utility grid. If this process is triggered, the system also completely changes to stand-alone mode without interruption. The Sunny Island can be integrated into different system constellations.
2 Sunny Island 4548-US / 6048-US SMA Solar Technology America LLC Devices of a Sunny Island System: 18 SI4548-6048-US-BE-en-21 Operating Manual
SMA Solar Technology America LLC 2 Sunny Island 4548-US / 6048-US Single-Phase System, 120 Vac, up to 6 kW: • 4.5 kW with SI 4548-US-10 • 6 kW with SI 6048-US-10 Single-Phase Parallel System, 120 Vac, up to 18 kW: Maximum 3 Sunny Island of types SI 4548-US-10 / 6048-US-10.* * The types SI 4548-US-10 / 6048-US-10 can be arbitrarily combined, also with older devices of type SI 5048U.
2 Sunny Island 4548-US / 6048-US SMA Solar Technology America LLC Split-Phase System, 240 Vac, up to 12 kW 2 Sunny Island of types SI 4548-US-10 / 6048-US-10.* Three-Phase System, 120/208 Vac, up to 18 kW 3 Sunny Island of types SI 4548-US-10 / 6048-US-10.* * The types SI 4548-US-10 / 6048-US-10 can be arbitrarily combined, also with older devices of type SI 5048U.
SMA Solar Technology America LLC 2 Sunny Island 4548-US / 6048-US Double Split-Phase System, 240 Vac, up to 24 kW 4 Sunny Island of types SI 4548-US-10 / 6048-US-10. Only Sunny Island inverters of the same type must be used on one line conductor. L1 and L2 may be installed with different types (e.g.: L1 with 2 x SI 4548-US-10 und L2 with 2 x SI 6048-US--10).
2 Sunny Island 4548-US / 6048-US SMA Solar Technology America LLC 2.
SMA Solar Technology America LLC Position Description B LEDs showing device operation C Control buttons D Slot for the SD memory card 2 Sunny Island 4548-US / 6048-US E Opening for the additional connections area (insertion of the cables via conduits) F Connection area for additional connections G Opening for the additional connections area (insertion of the cables via conduits) H Rubber enclosure opening for the area of additional connections (inserting cables without conduits) I DC conn
2 Sunny Island 4548-US / 6048-US SMA Solar Technology America LLC A B G M N R D C H E I O K P F L Q S Position Quantity Designation A 1 Sunny Island B 1 Wall mounting bracket C 2 Ventilation grid D 1 Battery temperature sensor E 2 Filler plug F 2 Counter nut for filler plug G 1 RJ45 cable, black H 1 Silicone tube I 1 Rubber plugs for feed-through of one cable K 2 Rubber plugs for feed-through of 2 cables L 1 SD memory card M 2 M6x10 hexagon socket sc
SMA Solar Technology America LLC Position Quantity 2 Sunny Island 4548-US / 6048-US Designation R 1 RS485 Piggy-Back (optional) S 1 RJ45 cable, white (optional) 2.4 Required Tools and Materials The following tools and materials are required in order to mount and install the Sunny Island 4548-US / 6048-US: Tools (not included in scope of delivery) Cable knife Combination pliers Crimping tool for bootlace ferrules (suitable for wire sizes up to 3/0 AWG) Diagonal cutting pliers Drill Drill bit (e.g.
3 Safety SMA Solar Technology America LLC 3 Safety 3.1 Intended Use The Sunny Island is a bidirectional inverter (battery inverter and battery charger) for off-grid systems. The Sunny Island supplies loads on the stand-alone grid side and charges the batteries with the energy from grid-feeding units connected on the AC side. The Sunny Island is designed for indoor use only and may only be used as stationary equipment. The Sunny Island is not suitable for supplying life-sustaining medical devices.
SMA Solar Technology America LLC 3 Safety Alterations to the product, e.g. modifications or conversions, are permitted only with the express written permission of SMA. Unauthorized alterations will void guarantee and warranty claims and usually void the operation permit. SMA shall not be held liable for any damage caused by such changes. Any use of the product other than that described in the Intended Use section does not qualify as appropriate.
3 Safety SMA Solar Technology America LLC Risk of crushing injuries due to movable generator parts Moving parts in the generator can crush or sever body parts. A generator can be started automatically by the Sunny Island. • Only operate the generator with the safety equipment. • Install, maintain, and operate the generator according to the manufacturer's specifications. Danger to life due to incompatible lithium-ion battery An incompatible lithium-ion battery can lead to a fire or an explosion.
SMA Solar Technology America LLC 3 Safety Installation altitude The Sunny Island has been designed for use at altitudes of up to 9,840 ft (3,000 m) above MSL. Please contact SMA before using the device at altitudes above 9,840 ft (3,000 m). A performance loss of 0.5% per 330 ft (100 m) is to be expected starting at an altitude of 6,560 ft (2,000 m) above MSL. 3.3 Potential Hazards Electric shock from touching live components Death or serious injuries.
3 Safety SMA Solar Technology America LLC Danger to life if the Sunny Island is used to supply energy to life-sustaining medical devices The Sunny Island was not developed to power life-sustaining medical devices. • Do not use the Sunny Island in systems in which a power outage might result in personal injury.
SMA Solar Technology America LLC 4 Mounting 4 Mounting 4.1 Selecting the Mounting Location Danger to life if installed in improper locations Death or serious burns. Despite careful construction, electrical devices can cause fires. • Do not mount the Sunny Island on flammable construction materials. • Do not mount the Sunny Island near highly flammable materials. • Do not mount the Sunny Island in potentially explosive areas.
4 Mounting SMA Solar Technology America LLC • Mount the Sunny Island in such a way that the display is at eye level in order to allow the operating state to be read at all times. • Mount vertically or tilted backwards by max. 45°. • Never mount the device with a forward tilt. • Do not mount in a horizontal position. • The connection area must not point upwards. • The room air can have a humidity of up to 100%, but this must not be condensing.
SMA Solar Technology America LLC 4 Mounting 4.
4 Mounting SMA Solar Technology America LLC 4.2.1 Mounting the Sunny Island on a Stone Wall Risk of injury due to the Sunny Island falling Physical injury (fractures or crushing) and damage to the Sunny Island. • Ensure that the wall can carry the weight of the Sunny Island. • If mounting onto a wooden wall with studs, ensure that the wall mounting bracket is firmly connected with all studs. 1. Place the wall mounting bracket against a suitable wall for mounting and align using a level.
SMA Solar Technology America LLC 4 Mounting 5. Attach the Sunny Island to the wall mounting bracket. 6. Screw the Sunny Island to the wall mounting bracket on both sides using the screws (M6x10) provided. Tighten the screws clockwise. 7. Make sure that the screws are securely in place. 8. Close the recessed grips with the ventilation grids provided. To help you identify the sides, the ventilation grids are marked on the inside with "links/left" and "rechts/right".
4 Mounting SMA Solar Technology America LLC 4.2.2 Mounting the Sunny Island using Wall Studs Risk of injury due to the Sunny Island falling Physical injury (fractures or crushing) and damage to the Sunny Island. • Ensure that the wall can carry the weight of the Sunny Island. • If mounting onto a wooden wall with studs, ensure that the wall mounting bracket is firmly connected with all studs.
SMA Solar Technology America LLC 5 Opening and Closing 5 Opening and Closing The enclosure of the Sunny Island has a removable lid. Remove the enclosure lid only when installing the device or for required maintenance or repair work. 5.1 Opening the Sunny Island 1. Stop the Sunny Island (see Section 9.2 "Stopping the Sunny Island (Standby)", page 76). 2. Disconnect the Sunny Island from voltage sources (see Section 9.4 "Disconnecting the Device from Voltage Sources", page 76). 3.
5 Opening and Closing SMA Solar Technology America LLC 5.2 Closing the Sunny Island Electric shock due to live enclosure lid Death or serious injuries. The grounding of the lid is ensured by the toothed washers. • Fasten the washers for all six screws with the toothing facing toward the enclosure lid. 1. Place the enclosure lid onto the enclosure and fasten with the six screws and the corresponding washers in the sequence depicted on the right. Tighten the screws with a torque of 53 in-lb (6 Nm). 2.
SMA Solar Technology America LLC 6 Electrical Connection 6 Electrical Connection All cables are routed through the openings on the bottom side of the device (see next illustration) and connected to the appropriate terminals on the Sunny Island. Use conduits to install the cables on the DC side and on the AC side on the Sunny Island. Conduits ensure the dust-tight and water-tight mounting of a cable on the enclosure and also serve as a strain relief of the cable at the terminal.
6 Electrical Connection SMA Solar Technology America LLC Terminal Torque Cable size Cable type AC terminals 22 in-lb (2.5 Nm) AWG 4 (25 mm²) Only use copper conductors. These cables must be approved for 167°F (75°C). Additional Connections 5 in-lb to 7 in-lb (0.56 Nm to 0.79 Nm) AWG 30 to AWG 12 Only use copper (0.05 mm² to 4 mm²) conductors. These cables must be approved for 167°F (75°C).
SMA Solar Technology America LLC 6 Electrical Connection 6.1 Grounding Danger to life due to electric shock • Fuse the sub-distribution of the generator or the utility grid at input AC2 of the Sunny Island with an overcurrent protective device (Branch Circuit Protection). • Ensure that the overcurrent protective device complies with the specifications of the National Electrical Code®, ANSI/NFPA 70. • Use an overcurrent protective device for a maximum of 70 A.
6 Electrical Connection SMA Solar Technology America LLC Connecting the Grounding Conductor 1. Install a conduit with a diameter of 11/2 in. (38.1 mm) at the opening in the center of the Sunny Island. Attach the conduit in the inside of the Sunny Island using the appropriate nut. 2. Pull the cable with the grounding conductor through the supply line from the inside of the distribution board into the enclosure of the Sunny Island. 3. Strip off the insulation of the grounding conductor. 4.
SMA Solar Technology America LLC 6 Electrical Connection 6.2 DC Connection Function impairments of devices on the DC busbar The Sunny Island is not suitable for use with DC supply grids. Function impairment can occur on devices installed on the DC side of a Sunny Island with cables exceeding 98 ft (30 m) and with a flexible connection. • Only use fixed installations. • Do not use cables of lengths greater than 98 ft (30 m) between the Sunny Island and the battery and/or DC device. 6.2.
6 Electrical Connection SMA Solar Technology America LLC Risk of injury due to short-circuit currents Short-circuit currents in the battery can cause heat build-up and electric arcs. Burns or eye injuries due to flashes may result. • Remove watches, rings, and other metal objects. • Use insulated tools. • Do not place tools or metal parts on the battery. Danger to life due to incompatible lithium-ion battery An incompatible lithium-ion battery can lead to a fire or an explosion.
SMA Solar Technology America LLC 6 Electrical Connection 6.2.2 Cable Dimensioning Keep the cables to the battery as short as possible The battery cables should be as short as possible. Long cables and insufficient wire sizes reduce the system efficiency as well as the overload capacities. Do not lay the battery cable under plaster or in armored conduits.
6 Electrical Connection SMA Solar Technology America LLC 6.2.3 Cable Protection The DC circuit breaker in the Sunny Island can interrupt DC currents of up to 10 kA. In addition to the internal DC circuit breakers, install a separate, external fuse as close as possible to the battery. Install a fuse link for the fuse suitable for the maximum occurring DC currents. Electric shock resulting from insufficient protection of the DC cables Death or serious burns.
SMA Solar Technology America LLC 6 Electrical Connection Installing the DC Connection 1. Pull the positive DC cable through the conduit from the distribution board into the enclosure of the Sunny Island. 2. Pull the negative DC cable through the conduit from the distribution board into the enclosure of the Sunny Island. 3. Remove the coating. 4. Strip the DC cable insulation. DC connection area The areas between the stripped conductor and the connection area must be clean.
6 Electrical Connection SMA Solar Technology America LLC 6.3 AC Connection 6.3.1 Cable Protection You must connect the Sunny Island via a sub-distribution to the stand-alone grid and any external source present. Fit the sub-distribution with appropriate circuit breakers and observe all locally applicable standards and directives. Fitting the sub-distribution with circuit breakers The sub-distribution must be equipped with appropriate circuit breakers.
SMA Solar Technology America LLC 6 Electrical Connection Distributing loads and AC feed-in generators in multiple-phase systems Distribute the feed-in power and the consumed power of the loads and AC feed-in generators as equally as possible across all line conductors of the system. Connection in a split-phase system In a split-phase system, connect the master to line conductor L1 and the slave 1 to line conductor L2 (see Section 2.2 "At a Glance", page 22).
6 Electrical Connection SMA Solar Technology America LLC 5. Insert the grounding conductor into the terminal labeled "AC1 Loads/Sunny Boys" and tighten the fastening screw with a torque of 22 in-lb (2.5 Nm). Use a torque wrench with flat-blade screwdriver bit SZS 1.0 x 6.5. 6. Insert N and L into the terminals labeled "AC1 Loads/Sunny Boys" and tighten the fastening screws with a torque of 22 in-lb (2.5 Nm). Use a torque wrench with flat-blade screwdriver bit SZS 1.0 x 6.5. ☑ The AC1 cables are connected.
SMA Solar Technology America LLC 6 Electrical Connection Three-phase system Always install the master on line conductor L1, slave 1 on L2 and slave 2 on L3. This installation has a right-hand rotating magnetic field. Additional fuses in the system If there are no additional fuses installed between the generator or utility grid and the Sunny Island, the Sunny Island knows whether it has a connection to the utility grid/to the generator.
6 Electrical Connection SMA Solar Technology America LLC 6. Insert N and L into the terminals labeled "AC2 Gen/Grid" and tighten the fastening screws with a torque of 22 in-lb (2.5 Nm). Use a torque wrench with flat-blade screwdriver bit SZS 1.0 x 6.5. 6.4 Additional Connections 6.4.1 Inserting the Data Cables For installing the connections described in the following sections, lead the data cables through the specified holes in the cable support sleeve.
SMA Solar Technology America LLC 6 Electrical Connection 6.4.2 Connecting the Data Cable of the Lithium-Ion Batteries Requirements: The total length of the communication bus must not exceed 98 ft (30 m). Keep in mind that the communication bus possibly connects several nodes such as additional Sunny Island inverters. The data cable must be a CAT5 cable with RJ45 plugs. 1. Plug the data cable into a free pin connector ComSync on the Sunny Island. 2.
6 Electrical Connection SMA Solar Technology America LLC Battery temperature sensor in a cluster A battery temperature sensor is provided with each Sunny Island. Only one battery temperature sensor is required for a cluster. Connect the temperature sensor to the master of the cluster. Connecting the Battery Temperature Sensor Polarity of the conductors The polarity of the two conductors is irrelevant for the functioning of the battery temperature sensor. 1.
SMA Solar Technology America LLC 6 Electrical Connection Destruction of the battery due to the connection of additional DC devices If additional DC devices are installed in an off-grid system, the internal Sunny Island current measurement becomes inaccurate. The charge current can no longer be set exactly and as a result will destroy the battery. • Install an external battery current sensor (shunt).
6 Electrical Connection SMA Solar Technology America LLC Installation notice The battery current sensor must be looped around the negative terminal of the battery. The terminal of the battery current sensor which is connected to the Sunny Island (1), must be connected to the terminal "BatCur+" (see example). • Positive battery current means that the battery is being discharged (current from the battery). • Negative battery current means that the battery is being charged (current into the battery). 1.
SMA Solar Technology America LLC Number of slaves 1 slave 6 Electrical Connection Connection procedure • Take the RJ45 cable coming from the master, insert it into the slave and plug it into the "ComSyncIn" pin connector. • Leave the terminator plugged into the "ComSyncOut" pin connector. ☑ Master and slave are connected. 2 slaves • Lead the RJ45 cable coming from the master into slave 1 and plug it into the "ComSyncIn" pin connector.
6 Electrical Connection SMA Solar Technology America LLC 6.4.6 Multifunction Relay 1 and 2 The Sunny Island offers you several options for the control of internal and external processes. Two multi-function relays are integrated into the Sunny Island to which you can assign functions using the parameters "241.01 Rly1Op" and "241.02 Rly2Op" (see Section 15 "Relays", page 140).
SMA Solar Technology America LLC 6 Electrical Connection 4. Connect the insulated conductors to the supplied three-pole terminal. The pins have the following meaning: – NC: normally closed (when the Sunny Island is off, the relay is closed) – C: Contact (front contact) – NO: normally opened (when the Sunny Island is off, the relay is open) 5. Tighten the terminals (torque: 5 in-lb to 7 in-lb (0.56 Nm to 0.79 Nm)). 6. Insert the three-pole terminal into corresponding pin connector on the Sunny Island.
6 Electrical Connection SMA Solar Technology America LLC Generator start The Sunny Island can control generators. The Sunny Island directly supports generators that can be started/stopped using a single contact. Default settings of the relays Relay 1 is preset to the "AutoGn" generator start function and relay 2 to the "AutoLodSoc" load shedding function.
SMA Solar Technology America LLC 6 Electrical Connection 6.4.7 BatVtgOut Power Supply The battery voltage is conducted to the outside at these terminals. The battery voltage is fused at both poles by PTC resistors (max. 0.75 A). Depending on the internal temperature of the Sunny Island, the tripping threshold is over 0.75 A. This connection can be used, for example, to supply a DC contactor for load shedding. Connecting the BatVtgOut Voltage Supply 1.
6 Electrical Connection SMA Solar Technology America LLC 4. Tighten the screws of the terminal (torque: 5 in-lb to 7 in-lb (0.56 Nm to 0.79 Nm)). ☑ The DigIn digital input is connected. 6.5 Interface for External Communication You can connect SMA communication devices (e.g. Sunny WebBox) or a PC with the appropriate software to a communication interface. You will find a detailed wiring diagram in the communication device manual, the software or on the Internet at www.SMA-America.com.
SMA Solar Technology America LLC 6 Electrical Connection Connecting the Interface for External Communication 1. Remove the right-hand plug from the cable support sleeve. Position Description A Slot for communication interface B Cable route C Enclosure opening in the floor of the Sunny Island 2. Lead the cable from the outside through the enclosure opening (C) into the interior of the Sunny Island. 3. Plug the cable into the "ComSmaIn" pin connector. 4. Fit the plug around the cable. 5.
6 Electrical Connection SMA Solar Technology America LLC Sunny Boy/ Sunny WebBox RS485 – Signal allocation RJ45 pin connector - RJ45 plug color Sunny Island code 7 B (Data–) 6 green with white stripes 8. The RS485 data bus of the Sunny Island is terminated using a terminator. This terminator is already plugged into the "ComSmaOut" pin connector. Only remove the plug if you want to connect another communication device. 9. Plug the communication interface in slot (A).
SMA Solar Technology America LLC 6 Electrical Connection Data Transmission Speed The Sunny Island can be operated at different data transfer rates to communicate with external devices. Set the parameter "250.06 ComBaud". Setting the baud rate If PV inverters are connected to the communication bus, then the baud rate must be set to 1,200 bps (default setting).
7 Control Elements SMA Solar Technology America LLC 7 Control Elements In order to commission the Sunny Island, you should familiarize yourself with its operation beforehand. The individual control elements can be seen in the following figure.
SMA Solar Technology America LLC 7 Control Elements 7.1 Display Messages The display of the Sunny Island has two lines, each with 16 characters. Meaning of the symbols Observe the information on the meaning of the individual symbols (see Section 10.6 "Display Messages (Overview)", page 89).
7 Control Elements SMA Solar Technology America LLC 7.2 DC Circuit Breaker The DC circuit breaker is used to switch on/off as well as to disconnect the Sunny Island on the DC side (see Section 9 "Switching On and Off", page 75). 7.
SMA Solar Technology America LLC 8 Commissioning 8 Commissioning 8.1 Requirements Checking the Connections • Before commissioning check all electrical connections for correct polarity. • Ensure that all electrical connections are connected in accordance with the specifications of this technical description. Always save data Always use the SD memory card for storing data and events. In case of a failure SMA can thus help you quickly. • Always leave the SD memory card plugged in the Sunny Island.
8 Commissioning SMA Solar Technology America LLC 1. Switch the DC circuit breaker of the Sunny Island to "ON". ☑ The Sunny Island initiates the start-up phase. The notifications shown here are displayed. The last notification is displayed as soon as the start-up phase is completed. 2. Press and hold down until the Sunny Island beeps three times. ☑ The QCG is started.
SMA Solar Technology America LLC 8 Commissioning Systems with one Sunny Island If only one Sunny Island is used in the system, the device type is permanently set to "master" and is not displayed.
8 Commissioning SMA Solar Technology America LLC Value in variable Explanation PvOnly Stand-alone grid, no utility grid, no generator Gen Stand-alone grid with generator Grid Battery-backup grid GenGrid Battery-backup grid with generator GenGrid: – Maximum generator current (0 A to 224 A), default setting: "30 A" – Generator interface (Manual, Autostart), default setting: "Autostart" – Maximum grid current (0 A to 224 A), default setting: "30 A" Grid: – Maximum grid current (0 A to 224 A), defau
SMA Solar Technology America LLC 8 Commissioning 8.3 Commissioning the battery current sensor In the event you have installed a battery current sensor in your system, you are required to synchronize the internal offset of the device. To do this, proceed as follows: 1. Set the Sunny Island to standby mode (see Section 9.2 "Stopping the Sunny Island (Standby)", page 76). Entering incorrect parameters endangers operational safety.
8 Commissioning SMA Solar Technology America LLC 8. Reconnect the conductors of the battery current sensor correctly as displayed in the graphic. Make sure the insulated conductors have the correct polarity. – BatCur+ to terminal 1 – BatCur– to terminal 2 9. Start the Sunny Island (see Section 9.1 "Switching On", page 75). 10. Check the current direction: "120.
SMA Solar Technology America LLC 9 Switching On and Off 9 Switching On and Off 9.1 Switching On Systems with several Sunny Island inverters Switch on the slaves before you switch on the master. To do this, proceed as follows. 1. Check the following requirements: – correct electrical connections – voltages and polarities 2. Switch the DC circuit breaker of the Sunny Island to "ON". ☑ The display light of the Sunny Island switches on. Parameter "250.01 AutoStr" Even with the parameter "250.
9 Switching On and Off SMA Solar Technology America LLC 4. Press and hold . ☑ Process bar is shown in the display. ☑ On a slave, the notification displayed here is shown until the master is started. 5. Press on the master. ☑ An acoustic signal sounds. The Sunny Island is in operation and the green LED is glowing. 9.2 Stopping the Sunny Island (Standby) Standby Even in standby mode the Sunny Island still requires approx. 4 W of power from the battery.
SMA Solar Technology America LLC 9 Switching On and Off 3. Disconnect the Sunny Island from the voltage sources (AC1 and AC2). Separate AC1 and AC2 and disconnect from voltage sources. ☑ If PV inverters are connected to AC1, they automatically switch off once they are no longer connected to the stand-alone grid. 4. Check that the Sunny Island has been disconnected from voltage sources. 5.
9 Switching On and Off SMA Solar Technology America LLC 4. Switch on the Sunny Island as described in section (see Section 9.1 "Switching On", page 75). Charging the batteries After recommissioning, it is important that the batteries are charged. If an autostart generator is present in the stand-alone grid, the Sunny Island will request the generator after a few minutes. 5. Monitor the generator startup and check that the Sunny Island switches to charge mode. 6.
SMA Solar Technology America LLC 10 Operation 10 Operation The main menu consists of a "Home Screen" and the other main menu entries, which split up into the different menu levels. Operating states, e.g. the current operating mode, power, etc. are displayed on the "Home Screen" (see Section 10.6 "Display Messages (Overview)", page 89). The menu consists of a main menu and maximum two sub-menu levels (see Section 10.1 "Menu Structure", page 80).
10 Operation SMA Solar Technology America LLC Exception: When starting the device for the first time, you must set the slave devices as slave in the QCG and everything else is performed from the master. Single Point of Operation Single Point of Operation also means that all log data of the master including the log data of the slaves are saved to the SD memory card on the master.
SMA Solar Technology America LLC 10 Operation Overview of the Menu Structure: Operating Manual SI4548-6048-US-BE-en-21 81
10 Operation SMA Solar Technology America LLC 100# Meters - Display values In this main menu, you will find the display values for the following devices of the off-grid system: • 110# Inverter Meters − Sunny Island • 120# Battery Meters − Battery • 130# External Meters − Utility grid/Generator • 140# Charge Controller − Sunny Island Charger (is only shown when there is at least one Sunny Island Charger connected to the Sunny Island) • 150# Compact Meters − compact view of values for commissioning By openi
SMA Solar Technology America LLC 10 Operation 600# Direct Access − Direct access to the parameters This is a main menu that gives you direct access to the settings and display values (see Section 10.3 "Direct Access - Direct Access to the Parameters", page 84). 10.2 Changing Parameters Using the up and down arrow buttons, you navigate through a selected menu to view or change a parameter, for example. When the relevant parameter is displayed, you can read off its present value.
10 Operation SMA Solar Technology America LLC 10.3 Direct Access - Direct Access to the Parameters The "600# Direct Access" menu gives you direct access to the selected parameter using the parameter name or number. Via the Select Name sub-menu, you have direct access to the following functions: • GnManStr: manual starting of the generator (see Section 14.1.4 "Manual Generator Operation", page 122) • ManChrgSel: manual starting of equalization charge (see Section 13.5.
SMA Solar Technology America LLC 10 Operation Bat1 (Battery values 1) Position Description A Name of the compact meter B Present battery state of charge (BatSoc) C Estimated error of the state of charge (BatSocErr) D Total battery current of the cluster (TotBatCur) E Battery temperature (BatTmp) Bat2 (Battery values 2) Position Description A Name of the compact meter B Battery voltage (BatVtg) C Setpoint of charging voltage (BatChrgVtg) D Active charging process (BatChrgOp) E Rema
10 Operation SMA Solar Technology America LLC Inv (AC Values of Inverter) Position Description A Name of the compact meter B Present voltage at the inverter (InvVtg) C Present frequency at the inverter (InvFrq) D Present active power of the inverter (InvPwrAt) E Present reactive power at the inverter (InvPwrPt) InvTot (Total AC Values of Inverter) Position Description A Name of the compact meter B Total active power of the inverter (cluster) C Total reactive power of the inverter (clu
SMA Solar Technology America LLC Position Description A Name of the compact meter B Voltage of the external source (ExtVtg) C Frequency of the external source (ExtFrq) D Active power of the external source (ExtPwrAt) E Reactive power of the external source (ExtPwrPt) 10 Operation ExtTot (Total AC Values of External Source) Position Description A Name of the compact meter B Total active power of the external source (cluster) C Total reactive power of the external source (cluster) OpStt
10 Operation SMA Solar Technology America LLC 10.5 Entering the Installer Password Entering incorrect parameters endangers operational safety. Damage to the off-grid system and its components All parameter settings which could affect the operating safety of the off-grid system are protected by the installer password. • Only trained electrically qualified persons are permitted to set and adjust system parameters.
SMA Solar Technology America LLC 10 Operation 8. Confirm the password by pressing . ☑ The installer password has been entered. Operating level [1] = the installer level is set. 9. Exit the menu by pressing the key. Switching operating levels • If the password is invalid, the Sunny Island does not switch to the installer level. In this case, recalculate and re-enter the installer password as described in this section.
10 Operation SMA Solar Technology America LLC Position Description G Relay 2 status H Warning message (exclamation mark) The Sunny Island also shows the following values one after the other in the upper line of the "Home Screen" (parameter name and parameter value in 3-second intervals): • Bar display for output power or charging power (the direction of energy flow is displayed by the arrows in the lower line) • Total active power of the inverter (cluster) • Active power of external source (total of
SMA Solar Technology America LLC Symbol 10 Operation Meaning Battery Load side (Loads/Sunny Boys) Utility pole The Sunny Island is working with grid limits. The Sunny Island is working with generator limits. The Sunny Island is configured as master. The Sunny Island is configured as slave 1. The Sunny Island is configured as slave 2. Status of the external source: Voltage and frequency of the generator/the utility grid are within the configured limits.
10 Operation SMA Solar Technology America LLC Symbol Meaning "Start" request reason: The generator has been requested by the operator manually setting the generator request in the Sunny Island from "Auto" to "Start". The generator is then no longer automatically controlled or switched off by the Sunny Island. "Time" request reason: The generator was started for one hour using the "Run1h" setting in the Sunny Island. Once this time has passed, the Sunny Island automatically switches off the generator.
SMA Solar Technology America LLC 10 Operation Syntax for menus and parameters The syntax specified here for menus and parameters applies throughout the entire document. A menu is designated by the number of the menu, hash and the name of the menu (120# Battery Meters). A parameter is labeled with the menu number, dot, the parameter number and parameter name (120.02 BatVtg). 10.
11 Data Storage on SD Memory Card SMA Solar Technology America LLC 11 Data Storage on SD Memory Card The Sunny Island can store firmware, parameters and measured data on a SD memory card which must be FAT-16-formatted and may have a max. size of 2 GB (possible storage sizes are 32/64/ 128/256/512 MB and 1 GB and 2 GB). Use the supplied SD memory card only for the Sunny Island. Do not save any multimedia files on the SD memory card. File names are saved in 8.
SMA Solar Technology America LLC 11 Data Storage on SD Memory Card The files on the SD memory card have the following meanings: File name Meaning evthism.log (evthisN.log for SlaveN) Event history of the device, saved by means of parameter "550.03 CardFunc", option StoEvtHis failhism.log (failhisN.log for SlaveN) Failure history of the device, saved by means of parameter "550.03 CardFunc", option StoFailHis si030607.evt Event/failure history for the day (Format MMDDYY) si030607.
11 Data Storage on SD Memory Card SMA Solar Technology America LLC The Sunny Island supports the acquisition of measurement data with data from the fields: • Battery • Inverter • System • External source • Loads Always save data Always use the SD memory card for storing data and events. In case of a failure SMA can thus help you quickly. 1. In the event of a fault contact the SMA Service Line. 2.
SMA Solar Technology America LLC 11 Data Storage on SD Memory Card Insert the SD memory card with the cut corner pointing down into the slot on the Sunny Island (see illustration). After inserting the SD memory card into the Sunny Island, the adjacent message appears on the display prohibiting the removal of the card: Initializing the SD memory card may take a few minutes.
11 Data Storage on SD Memory Card SMA Solar Technology America LLC 11.3 Saving and Loading Parameters You can configure and use various settings with various parameters, this means winter and summer. This parameter seta are known as Set 1 and Set 2. Using the parameter "550.01 ParaSto", you can save the current parameter settings and using the parameter "550.02 ParaLod", you can load the saved parameters. Save settings If the system is working optimally, it is a good idea to save these settings.
SMA Solar Technology America LLC 11 Data Storage on SD Memory Card 11.5 Status Messages Using the parameter 312.07 CardStt", you can query the status of your SD memory card: Display Description The SD memory card is deactivated. The SD memory card is activated. The SD memory card is full. The SD memory card has an invalid file format. The SD memory card is incompatible. The Sunny Island is loading parameters from the SD memory card. Loading parameters from the SD memory card has failed.
11 Data Storage on SD Memory Card SMA Solar Technology America LLC 11.6 Firmware Update The firmware of the Sunny Island can be updated via the SD memory card. Upon startup or when the SD memory card is inserted, the Sunny Island searches for special update files on the SD memory card. If it finds files containing new firmware versions, it performs an update when the Sunny Island is in standby mode. Duration of the firmware update The update for single-phase systems takes approximately five minutes.
SMA Solar Technology America LLC 11 Data Storage on SD Memory Card Starting QCG If you have carried out a firmware update in which the number before the dot in the firmware version has changed, it is advisable to start QCG and to perform all settings anew. Firmware Update in a System with One Sunny Island During the update, the Sunny Island displays the following messages.
11 Data Storage on SD Memory Card Display message SMA Solar Technology America LLC Display from Explanation Master Master update part 2/ 2. Master The slave update starts. Master The slave update is running. Master The master update is completed. Slave The slave update is completed. ⋮ ⋮ ⋮ ⋮ Parameters and settings Individual parameters and settings are retained during a firmware update.
SMA Solar Technology America LLC 12 Additional Functions 12 Additional Functions 12.1 Load Shedding If the loads connected to the Sunny Island consume more energy over a longer period of time than the generators connected produce, the batter can deeply discharge. The Sunny Island shuts down automatically if the state of charge of the battery is too low. This way, the Sunny Island avoids a deep discharge of the battery.
12 Additional Functions SMA Solar Technology America LLC The figure shows an example of the settings if the step-by-step load shedding function at night is to be avoided as much as possible. From 6 a.m. to 10 p.m. the load shedding is activated for a state of charge (SOC) of 40%, at nighttime (from 10 p.m. to 6 a.m.), however, the state of charge of the battery is allowed to go down to 30% before the load-shedding contactor is activated. The load shedding function can be assigned a total of two times.
SMA Solar Technology America LLC 12 Additional Functions 12.2 Sleep Mode Using the parameter "250.10 SleepEna" set to "Enable" allows the sleep mode to be activated in single-phase utility grids which the master uses to switch off the slaves when the power value allows this. Sleep mode The "Sleep Mode" works exclusively in stand-alone mode. The values for connection and disconnection of the Sunny Island are already set at the factory (optimized in terms of efficiency). 12.
12 Additional Functions SMA Solar Technology America LLC Double-Split-Phase System In a double split-phase system, each line conductor must only be fitted with Sunny Island inverters of the same type (e.g. two Sunny Island 6048-US). 12.6 Device Faults and Autostart If a critical fault occurs, the Sunny Island automatically shuts down and displays the reason on the display. If the autostart function is activated (parameter "250.
SMA Solar Technology America LLC 12 Additional Functions 12.9 Behavior in the Event of a Failure in a Three-Phase System You can influence how the Sunny Island reacts to failures occurring in a three-phase system using the parameter "250.30 RnMod". The parameter is set to "RunAlways" at the factory. This means that the master ignores all errors at the slave devices. If you set the parameter to "StopAlways", the system will be put in standby mode upon detection of a fault at the slave devices.
13 Battery Management SMA Solar Technology America LLC 13 Battery Management 13.1 Battery Type and Minimum Battery Capacity The battery management of the Sunny Island supports the following three battery types (parameter "221.01 BatTyp"): FLA VRLA NiCd Flooded Lead Acid: valve-regulated lead-acid battery with liquid electrolyte in all standard designs available on the market (grid plate, tubular plate, small, large, etc.).
SMA Solar Technology America LLC 13 Battery Management 13.2 Battery Temperature The Sunny Island continuously monitors the battery temperature using the battery temperature sensor provided. At 9°F (5°C) below the maximum permissible temperature (parameter "221.04 BatTmpMax"), a warning message is displayed. If the maximum value for the battery temperature is exceeded, the Sunny Island switches off.
13 Battery Management SMA Solar Technology America LLC Both the ampere-hour balancing method and the recalibration procedure which is performed via the voltage, automatically adjust to the connected battery over time (depends on the number of grid failures). The estimated state of charge error (display value "120.11 BatSocErr") will provide you with continuous information on the accuracy of the battery state of charge currently calculated.
SMA Solar Technology America LLC 13 Battery Management 13.5 Charge Control The Sunny Island uses a three-level charge control, using the IUoU procedure. When operating with the utility grid, a fourth level, Silent Mode, is optionally available. The I stands for the constant current phase (I phase). In this phase, the charging is limited by the maximum defined battery current (parameter "222.01 BatChrgCurMax"), the nominal generator current (parameter "234.
13 Battery Management SMA Solar Technology America LLC Once this constant voltage phase is finished, the Sunny Island switches to float charge which again carries out constant voltage charging but at a greatly reduced charging voltage (parameter "222.10 ChrgVtgFlo"). The purpose of the float charge is to keep the battery in a fully charged state without causing premature aging through overcharging.
SMA Solar Technology America LLC 13 Battery Management 13.5.1 Boost Charge The boost charge is the most common charging process of the Sunny Island. The boost charge ensures a high generator workload through a high charging voltage over a short period of time. With liquid FLA lead-acid batteries, this charge process should be used for gassing and thus compensating the electrolytes. The boost charge process can charge the battery up to approx. 85% to 90%. 13.5.
13 Battery Management SMA Solar Technology America LLC 13.5.3 Equalization Charge A battery bank consists of many individual battery cells connected in series which all behave slightly different. Over time, this results in different charge levels in the individual cells. This can lead to premature failure, initially of individual cells, and finally to failure of the entire bank. The Sunny Island can perform an equalization charge automatically every 180 days (parameter "222.
SMA Solar Technology America LLC 13 Battery Management "222.10 ChrgVtgFlo"). This ensures that the battery is always fully charged, even in silent mode. If a grid failure is detected during silent mode, the Sunny Island makes a stand-alone grid available within 10 ms to 30 ms. 13.6 Battery-Preservation Mode The Sunny Island has a sophisticated battery-preservation mode.
13 Battery Management SMA Solar Technology America LLC At all three levels, the Sunny Island is stopped only if no battery charging current flows within ten minutes (limit: 3 A charging current). The limits for all three levels can be set independently from each other. This allows individual levels to be skipped. Parameter BatPro1Soc < BatPro2Soc If the BatPro1Soc parameter < BatPro2Soc, level 1 is skipped and only level 2 is carried out.
SMA Solar Technology America LLC 13 Battery Management 13.8 Battery Lead Resistance In menu "221# Battery Property", you can specify the battery lead resistance (BatWirRes). The resistance is the ohmic resistance from the battery to the input of the master device. The default value of the parameter "221.06 BatWirRes" is 0 m Ω .
14 Connecting External Sources SMA Solar Technology America LLC 14 Connecting External Sources The Sunny Island supports the integration of external energy sources. Here, a distinction is made between the integration of a generator and the integration of the utility grid. Both the generator as well as the utility grid are integrated via the AC2 terminal of the Sunny Island. A single-phase, a split-phase and a three-phase connection can be established.
SMA Solar Technology America LLC 14 Connecting External Sources Sunny Island Connected in Parallel to a 120 V Generator Sunny Island in the Split-Phase System connected to a 240 V Generator Generally, the internal transfer relays of the slaves close only if the internal relay of the master is closed. Plants with master and slave unit on one battery (cluster operation) will keep on working if one slave fails. If the master fails, the whole cluster stops its operation.
14 Connecting External Sources SMA Solar Technology America LLC Cable length and wire size Use the same cable length and the same wire size when installing the Sunny Island inverters with the generator. 14.1.2 Generator Start Options The Sunny Island supports the following options for starting the generator which can be set in standby mode with parameter "234.
SMA Solar Technology America LLC 14 Connecting External Sources GenReq signal The GnReq signal (see Section 15 "Relays", page 140) is set for signaling the generator request and can thus be used as an alarm contact (in this case: a bulb). If no request is pending, the signal is reset. If an internal request is sent while the generator is already running, the signal is disabled until the generator is externally stopped and the stop time has expired (30 seconds).
14 Connecting External Sources SMA Solar Technology America LLC If the generator is started manually in this operating mode, the Sunny Island detects the running generator and connects it once the warm-up time has expired. If you stop the generator externally, this is detected, the generator disconnected and the stand-alone grid is still supplied.
SMA Solar Technology America LLC Run1h: 14 Connecting External Sources Operation for one hour. Once the lockout time has expired, the transition back into automatic mode follows. An equalization charge can be manually started using the parameter "520.01 ChrgSelMan". This sets the battery management (see Section 13 "Battery Management", page 108) in the equalization charge state and the generator is requested. This request persists until equalization charge has been completed.
14 Connecting External Sources SMA Solar Technology America LLC Charge State Dependent Start The Sunny Island changes to the operating mode "Stop/Lock" when stopped manually during automatic operation. • Manual inputs on the Sunny Island have a higher priority than automatic operation. • If the Sunny Island is manually stopped while the automatic operating mode is activated, it switches to stop/lock operating mode.
SMA Solar Technology America LLC 14 Connecting External Sources Reaching the float charging process If the float charging process (see Section 13.5 "Charge Control", page 111) is activated before the cutoff limit (GnSocTm1Stp or GnSocTm2Stp) is reached, the generator request is disabled again. If a full or equalization charge is active, the generator is only stopped after this charge is completed and not when "235.04 GnSocTm1Stp" or "235.06 GnSocTm2Stp" is reached.
14 Connecting External Sources SMA Solar Technology America LLC Generator Interface "234.
SMA Solar Technology America LLC 14 Connecting External Sources The Sunny Island charges the generator at each line conductor with the current defined in the parameter "234.03 GnCurNom" as a maximum. The power that is not directly used by the loads flows into the battery for charging. At the same time, the limits for the AC charging current limit (parameter "210.02 InvChrgCurMax") on the Sunny Island and the DC charging current limit (parameter "222.01 BatChrgCurMax") are active.
14 Connecting External Sources SMA Solar Technology America LLC This state lasts for the time period set at "234.11 GnErrStpTm". Once this time has expired, the generator is ready for another attempt. Autostart meter The recording of autostarts is only reset after the generator has been successfully connected and the minimum run time has expired or when the locked error state (Fail Lock) is disabled.
SMA Solar Technology America LLC 14 Connecting External Sources 14.1.9 Stopping the Generator If the generator was started via the Sunny Island (automatically or manually), it can be manually stopped at any time using the parameter "540.01 GnManStr". This disconnects the generator (the minimum run time is not taken into account here) and the power-down time (Cool) is skipped. Afterwards, the system enters the stop time (Lock).
14 Connecting External Sources SMA Solar Technology America LLC Reverse power Observe the reverse power which the Sunny Island can generate. The generator must provide this protection; observe the information of the generator manufacturers. Generator Failure If a generator failure is detected (failure on the master phase), the generator is disconnected immediately and a stop signal occurs on generator. The system enters the minimum stop time (Lock).
SMA Solar Technology America LLC 14 Connecting External Sources Default values The default values for limits during grid operation comply with the following standards: • For 120 V_60 Hz: UL1741 14.2.2 Starting the Sunny Island The Sunny Island always starts in stand-alone mode. Once the device is operating, it checks for the presence and validity (voltage and frequency) of the utility grid. 14.2.
14 Connecting External Sources SMA Solar Technology America LLC 14.2.5 Grid Reconnection In stand-alone mode, the Sunny Island constantly checks whether the grid has been reconnected (see above). The following conditions have to be fulfilled to guarantee that the Sunny Island synchronizes with the utility grid and connects to the utility grid: • The frequency of the utility grid must be between the values of the parameters "232.05 GdFrqMin" and "232.06 GdFrqMax" for the time defined in the parameter "232.
SMA Solar Technology America LLC 14 Connecting External Sources The Sunny Island connects to the utility grid when the state of charge of its batteries lies within the limits determined by the following parameters: • "233.01 GdSocTm1Str" to "233.02 GdSocTm1Stp" • "233.03 GdSocTm2Str" to "233.04 GdSocTm2Stp" The Sunny Island distinguishes between two time periods for which you can set different thresholds for connecting to and disconnecting from the utility grid via the above mentioned parameters.
14 Connecting External Sources SMA Solar Technology America LLC Silent Mode In order to save energy, the silent mode can be activated using the parameter "224.01 SilentEna" set to "Enable" (default disable). In this case, the Sunny Island is set to standby mode if the charge has been completed and the battery has been in float charge for some time (see Section 13.5.5 "Silent Mode", page 114). The silent mode is quit regularly to recharge the battery.
SMA Solar Technology America LLC 14 Connecting External Sources 14.2.7 Grid Failure A grid fault is characterized by the voltage or frequency being outside of the permissible limits (see Section 14.2.5 "Grid Reconnection", page 132) or the utility grid being disconnected. In this case, the time limits are relevant: smaller deviations are permitted for longer than large deviations (see Section 14.2.1 "Limits of the Voltage Range and Frequency Range", page 130).
14 Connecting External Sources SMA Solar Technology America LLC Failure of a Grid Line Conductor The failure of a line conductor (e.g. broken fuse) on a slave device is treated as a line conductor failure. The slave device then disconnects this line conductor. If the line conductor is detected as being available again, it is reconnected. The line conductor failure on the master device is treated as a grid failure (see above).
SMA Solar Technology America LLC 14 Connecting External Sources Energy of the PV inverters or wind power inverters not being consumed in the off-grid system, is fed-in by the Sunny Island via the internal transfer relay into the utility grid. The Sunny Island prevents an overload of the internal transfer relay.
14 Connecting External Sources SMA Solar Technology America LLC Abrupt switching from the utility grid to the generator and vice versa can lead to the destruction of the Sunny Island • If an automatic switch is installed, make sure that it completely disconnects the Sunny Island from the utility grid and from the generator for at least five seconds. • If a manual switch is installed, leave the switch in the OFF position for at least five seconds before switching to the new position.
SMA Solar Technology America LLC 14 Connecting External Sources In order to switch the signal circuit via the DigIn input, a single pole break contact or a single pole auxiliary relay with a 120 V coil is necessary. If there is no auxiliary relay present in the ATS, you must install an external contactor with a 120 V or 240 V coil. The coil is supplied with voltage via the utility grid.
15 Relays SMA Solar Technology America LLC 15 Relays The Sunny Island offers you several options for the control of internal and external processes. Two multi-function relays are integrated into the device to which you can assign functions using the parameters "241.01 Rly1Op" and "241.02 Rly2Op" (see Section 6.4.6 "Multifunction Relay 1 and 2", page 58).
SMA Solar Technology America LLC 15 Relays Function/ Setting Meaning Function description ExtVfOk External voltage and frequency OK External voltage and frequency are within the valid range for connection. GdOn Utility grid Relay switching when utility grid is available and connected. Error Error Sunny Island has a fault; in case of fault, contact is open (relay is deactivated). If the autostart is activated, the error status will be left within 15 s and restart triggered.
15 Relays SMA Solar Technology America LLC Function/ Setting Meaning Function description MccAutoLod Multicluster auto Loadshedding Automatic disconnection of the loads via an extension cluster in the Multicluster system "MccAutoLod" is the request from the master of the main cluster that is transmitted to a master of an extension cluster in order to use its relay for the automatic disconnection of the loads.
SMA Solar Technology America LLC 16 Multicluster Operation 16 Multicluster Operation 16.1 Communication between the Sunny Island Inverters For increased output, up to four Sunny Island clusters can be interconnected to form a Multicluster system. A Multicluster Box for Sunny Island 4548-US / 5048-US / 6048-US (MCB-12U) is required for such systems. Within each cluster, a communication interface connects the master to the slaves.
16 Multicluster Operation SMA Solar Technology America LLC RJ45 cable The RJ45 data cable is a standard Cat5e-FTP cable (simple shielding), with gold contacts. Each Multicluster Piggy-Back (MC-PB) is delivered with one yellow and one gray RJ45 data cable and two plugs (terminators). You require the yellow cable to establish communication between the master of the main cluster and the masters of the extension clusters.
SMA Solar Technology America LLC 16 Multicluster Operation 16.2 Commissioning the Multicluster System Possible load shedding during initial start-up of a multicluster system Unwanted load shedding can occur during the initial start-up of a multicluster system. The possible causes of this can be a too-low state of charge of the battery or a still too inaccurate charge level calculation in the Sunny Island. • Disconnect all loads before the initial start-up of a multicluster system.
16 Multicluster Operation SMA Solar Technology America LLC 16.3 Switching a Multicluster System On and Off 16.3.1 Switching On/Starting Switching on a Multicluster system can only take place at the master of the main cluster. The extension clusters will be started automatically after starting the main cluster. To do this, the DC circuit breakers of all Sunny Island inverters in the extension cluster must be set to "ON". Proceed as follows: 1.
SMA Solar Technology America LLC 16 Multicluster Operation 16.3.3 Load Shedding in a Multicluster System The load-shedding contactor in the Multicluster Box is controlled depending on the state of charge of the batteries. Significance of the SOC thresholds: When the state of charge of a battery reaches the lower SOC threshold, the load contactor is opened. The state of charge of the battery of the main cluster and the states of charge of the batteries of the extension clusters are evaluated.
16 Multicluster Operation SMA Solar Technology America LLC Nominal capacity of the battery storage systems Ideally, the various battery banks should all have the same nominal capacity. If the nominal capacity varies by up to 30%, a similar average state of charge is ensured via the equalization function. However, the smallest battery is then cycled more intensively. The nominal power and overload capacity are no longer the value of an individual device multiplied by the number of devices.
SMA Solar Technology America LLC 16 Multicluster Operation 16.9 Error Handling in a Multicluster System For Multicluster system operation, the entire main cluster is always required. If a device in the main cluster fails (master and/or slave), this causes the main cluster to stop. If the main cluster is stopped — whether due to a fault, or otherwise — this causes the extension clusters to stop, and thus the entire Multicluster system.
17 PV Inverters SMA Solar Technology America LLC 17 PV Inverters PV inverters compatible with the Sunny Island You will find the list with compatible PV inverters in the download are at www.SMA-America.com in the Technical Information "PV Inverters: Use of PV Inverters in Off-Grid Systems and Battery-Backup Systems North America and South America". The following section provides information on the connection and configuration of the Sunny Boy in stand-alone grid systems.
SMA Solar Technology America LLC 17 PV Inverters 17.2 Setting the Off-Grid Parameters Danger to life from back-feed into the utility grid in the event of grid failure Once you set the Sunny Boy to stand-alone grid parameters, the device no longer complies with IEEE 929 and the IEEE 1547. • Observe the locally applicable regulations. • Consult the responsible power company. Controlled battery charging is needed in an off-grid configuration. Therefore Sunny Boy inverters can reduce their feed-in power.
17 PV Inverters SMA Solar Technology America LLC PV Inverters with BLUETOOTH You can configure PV inverters with BLUETOOTH using the following communication products: • Sunny Explorer • Sunny WebBox mit BLUETOOTH Wireless Technology 17.4 Parameter Settings of the PV Inverters 17.4.1 Configuration of the PV Inverters in Battery-Backup Systems In a battery-backup system, the Sunny Island is connected to the utility grid and communicates with the PV inverters via RS485.
SMA Solar Technology America LLC 17 PV Inverters 17.4.2 Configuration of PV Inverters in Off-Grid Systems The country data set must be set to stand-alone mode in off-grid systems. You can order PV inverters configured for stand-alone mode or you can configure existing PV inverters for stand-alone mode (see Section 17.3 "Configuration of the PV Inverters with a Communication Products", page 151).
17 PV Inverters SMA Solar Technology America LLC No. Parameters Short descr. Value 5 Fac-max+ Hz +3.0 (starting from the base frequency f0) Hz/s 4 Hz 1 (starting from the base frequency f0) Hz 2 (starting from the base frequency f0) Upper range where the Sunny Boy is active, based on f0 6 dFac-Max Max.
SMA Solar Technology America LLC 17 PV Inverters The different settings have the following meanings: • f0 refers to the base frequency of the stand-alone grid created by the Sunny Island. • fAC Delta– and fAC Delta+ refer to the maximum range in which the Sunny Boy is active, based on, e.g. f0, 60 Hz.
18 Maintenance and Care SMA Solar Technology America LLC 18 Maintenance and Care The Sunny Island has been constructed for low maintenance. Thus, the necessary work is limited to only a few points. 18.1 Enclosure Check that the Sunny Island enclosure is mechanically sound. If damage (e.g. cracks, holes, missing covers) endangers the operating safety, the Sunny Island must be deactivated immediately. Larger particles of dirt should be removed from the device with a soft brush or similar item.
SMA Solar Technology America LLC 18 Maintenance and Care 18.5 Battery Danger to life due to incompatible lithium-ion battery An incompatible lithium-ion battery can lead to a fire or an explosion. Use of incompatible lithium-ion batteries can also make the user’s battery management system unsafe, and void manufacturers’ warranties.
19 Parameter Lists SMA Solar Technology America LLC 19 Parameter Lists Only parameters in the menu branches "200 Settings" and "500 Operation" can be changed. All other values are only shown on the display of the SI 4548-US-10 / 6048-US-10. All menu items that can only be changed by the installer using a password are shaded in gray in the following tables. Menu structure depends on system configuration Depending on the set system configuration, individual menu items may be missing.
SMA Solar Technology America LLC No. Name Description 05 InvFrq Frequency of the Sunny Island in Hz 06 InvPwrRt Reactive power of the Sunny Island in kVAr 07 Rly1Stt 08 Rly2Stt 19 Parameter Lists Value clear text (No.) Explanation State of relay 1 Off Relay open On Relay closed State of relay 2 Off Relay open On Relay closed 113# Inverter Slave1 Meters No. Name Description Value clear text (No.
19 Parameter Lists SMA Solar Technology America LLC 114# Inverter Slave2 Meters No. Name Description Value clear text (No.
SMA Solar Technology America LLC No. Name Description 04 InvCurSlv3 Current of slave 3 in A 05 InvPwrRtSlv3 Reactive power of slave 3 in kVAr 06 Rly1SttSlv3 07 Rly2SttSlv3 19 Parameter Lists Value clear text (No.) Explanation State of relay 1 on slave 3 Off Relay open On Relay closed State of relay 2 on slave 3 Off Relay open On Relay closed Value clear text (No.
19 Parameter Lists SMA Solar Technology America LLC No. Name Description 09 RmgTmEqu Remaining time until next equalization charge in days 10 AptPhs Status of the absorption phase 11 BatSocErr Estimated error of the state of charge in % 12 BatCpyThrpCnt Nominal energy throughputs of the battery Value clear text (No.
SMA Solar Technology America LLC 19 Parameter Lists 133# Generator State No. Name Description Value clear text (No.
19 Parameter Lists SMA Solar Technology America LLC 134# Device Meters No. Name Description 01 ExtPwrAt Active power of the external source in kW 02 ExtVtg Voltage of the external source in V 03 ExtCur Current of the external source in A 04 ExtFrq Frequency of the external source in Hz 05 ExtPwrRt Reactive power of the external source in kVAr 135# Slave1 Meters No.
SMA Solar Technology America LLC 19 Parameter Lists 138# Chp Meters (Combined Heat and Power) No. Name Description Value Explanation 01 State of CHP plant Idle Off Run Operation Lock Locked after operation ChpStt 02 ChpPwrAt Power of the CHP plant 03 ChpRmgTm Remaining time of the CHP plant (minimum run time) in hours, minutes and seconds 04 ChpStrRmgTm Remaining time of the power request of the CHP plant in hours, minutes and seconds 19.1.
19 Parameter Lists SMA Solar Technology America LLC 142# SIC50 1 No.
SMA Solar Technology America LLC 19 Parameter Lists No. Name Description 08 Software version of the third Sunny Island Charger Sic3SWVers 145# SIC50 4 No.
19 Parameter Lists SMA Solar Technology America LLC 19.2.2 Battery Settings (220#) 221# Battery Property No.
SMA Solar Technology America LLC 19 Parameter Lists #222 Battery Charge Mode No.
19 Parameter Lists SMA Solar Technology America LLC No. Name Description Value Explanation Default value 11 Battery temperature compensation 0 mV/C° to VRLA 4.0 mV/ °C FLA 4.0 mV/ °C NiCd 0 mV/ °C Disable Disable Enable Enable Enable 12 BatTmpCps AutoEquChrgEn a Automatic equalization charge 10 mV /°C #223 Battery Protection No.
SMA Solar Technology America LLC 19 Parameter Lists #224 Battery Silent Mode No. Name Description Value Explanation Default value 01 Silent mode on utility grid Disable Disable Disable Enable Enable SilentEna 02 SilentTmFlo Maximum time for float 1 h to 48 h charge until transfer into silent mode 3h 03 SilentTmMax Maximum time for silent until transfer into float 12 h 1 h to 168 h 225# Battery Current Sensor No.
19 Parameter Lists SMA Solar Technology America LLC 226# BMS Mode Basic / Off - No. Name Description Value Explanation Default value 01 BatChrgVtgMan Manual setpoint of the 41.0 V to 63.0 V battery charging voltage with disabled battery management in V 54.
SMA Solar Technology America LLC 19 Parameter Lists 232# Grid Control No. Name Description Value Explanation Default value 01 GdVtgMin Minimum grid voltage 105.6 V 02 GdVtgMax Maximum grid voltage 132 V 03 GdCurNom Nominal grid current 30 A 04 GdFrqNom Nominal grid frequency 60 Hz 05 GdFrqMin Minimum power frequency 59.3 Hz 06 GdFrqMax Maximum power frequency 60.
19 Parameter Lists SMA Solar Technology America LLC No. Name Description Value Explanation Default value 42 Activate the grid request based on power Disable Disable Disable Enable Enable GdPwrEna 233# Grid Start No.
SMA Solar Technology America LLC 19 Parameter Lists 234# Generator Control No.
19 Parameter Lists SMA Solar Technology America LLC No. Name Description Value Explanation Default value 20 AI sensitivity Low Low Normal Medium Medium Normal Normal High High Droop (1) Standard generator operation without I-Loop CurCtl (2) Current-controlled generator operation with I-Loop 41 GnAlSns GnCurCtlMod Enable I-Loop in generator mode Droop (1) 235# Generator Start No.
SMA Solar Technology America LLC No.
19 Parameter Lists SMA Solar Technology America LLC No. Name Description Value Explanation Default value 18 Generator start for charge type Off off Both Full Full charge Equal Equalization charge Both Full and equalization charge Disable Disable Enable Enable 19 GnStrChrgMod GnStrDigIn Generator start upon signal at activated digital input. Disable Based on the value at the input "DigIn", the Sunny Island decides whether to start or stop the generator.
SMA Solar Technology America LLC 19 Parameter Lists 236# CHP Control (Combined Heat and Power) No.
19 Parameter Lists SMA Solar Technology America LLC No.
SMA Solar Technology America LLC 19 Parameter Lists 19.2.4 Relay Settings (240#) 241# Relay General No.
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SMA Solar Technology America LLC 19 Parameter Lists No. Name Description Value 07 ExtPwrDerMinT m Minimum time of external power reduction 0 min to 600 min 08 ExtPwrDerDltVtg Differential voltage 0 V to 0.4 V of external power reduction Explanation Default value 10 min 0.15 V 242# Relay Load No.
19 Parameter Lists SMA Solar Technology America LLC No. Name Description 11 Time 1 for Loadshed 2 in hours, minutes and seconds Lod2Tm1Str Value Explanation Default value Value Explanation Default value Start: time 1, end: time 2 12 Lod2Tm2Str Time 2 for Loadshed 2 in hours, minutes and seconds Start: time 2, end: time 1 243# Relay Timer No.
SMA Solar Technology America LLC 19 Parameter Lists 244# Relay Slave1 No.
19 Parameter Lists SMA Solar Technology America LLC No.
SMA Solar Technology America LLC 19 Parameter Lists 245# Relay Slave2 No.
19 Parameter Lists SMA Solar Technology America LLC No.
SMA Solar Technology America LLC 19 Parameter Lists 246# Relay Slave3 No.
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SMA Solar Technology America LLC 19 Parameter Lists 19.2.5 System Settings (250#) No. Name Description 01 Autostart AutoStr Value Explanation Default value 3 If the value 0 has been set, this means that the autostart is deactivated. 02 Dt Date MM/DD/YYYY 99.99.
19 Parameter Lists SMA Solar Technology America LLC No.
SMA Solar Technology America LLC 19 Parameter Lists No. Name Description Value Explanation Default value 28 Typ of DC charging device Auto Automatic Auto DCOnly Battery charger only SMA Sunny Island Charg er "Run Mode" RunAlways Always available Behavior under fault conditions StopAlways Stop if device malfunctions 30 ChrgCtlOp RnMod RunAlways 19.2.6 Password Setting (280#) Observe the information on entering the installer password (see Section 10.
19 Parameter Lists SMA Solar Technology America LLC No. Name Description 04 OnTmh Operating hours of the Sunny Island in hours 05 ClstCfgAt Set cluster configuration Value clear text (No.
SMA Solar Technology America LLC 19 Parameter Lists 313# Inverter Slave1 Diagnosis No.
19 Parameter Lists SMA Solar Technology America LLC No. Name Description 06 FwVer2Slv2 DSP firmware version of slave 2 07 FwVer3Slv2 OCU boot loader of slave 2 08 FwVer4Slv2 DSP boot loader of slave 2 Value Explanation Value Explanation L1 Line conductor L1 L2 Line conductor L2 L3 Line conductor L3 315# Inverter Slave3 Diagnosis No.
SMA Solar Technology America LLC No.
19 Parameter Lists SMA Solar Technology America LLC No.
SMA Solar Technology America LLC 19 Parameter Lists No.
19 Parameter Lists SMA Solar Technology America LLC 19.3.3 External Diagnosis (330#) 331# Grid Diagnosis No. Name Description 01 GdEgyCntIn Energy meter for grid feed-in in kWh 02 GdEgyCntOut Energy meter for power taken from the grid in kWh 03 GdEgyTmh Run time of energy meter for utility grid in hours 04 GdOpTmh Operating hour meter for grid operation 05 GdCtcCnt Counter for grid connections 06 TotTmh Feed-in hours 332# Generator Diagnosis No.
SMA Solar Technology America LLC 19 Parameter Lists No.
19 Parameter Lists SMA Solar Technology America LLC No. Name Description Value Explanation 10 Manual update of the cluster UpdateClst Cluster update (OCU & DSP) FrcClstUpd Default value UpdateClstBFR Cluster update (OCU) UpdateClstDSP Cluster update (DSP) 520# Operation Battery No.
SMA Solar Technology America LLC 19 Parameter Lists No. Name Description Value Explanation 03 Functions of the SD memory card ForcedWrite Forced write StoEvtHis Save event memory StoFailHis Save error log StoHis Storing event and fault memory Off Disable On Enable 04 CardFunc DatLogEna Automatic data storage Default value On 560# Operation Grid The 560# Operation Grid menu can only be seen if the external voltage source of the Sunny Island is set to "Grid" or "GenGrid". No.
20 Troubleshooting SMA Solar Technology America LLC 20 Troubleshooting In general, the Sunny Island distinguishes between events and errors. • Events describe state changes or transient states (e.g. generator connection). • Errors describe states that are not permitted or are only permitted up to a certain rate. This includes warnings, distrubances and errors. User interaction is generally required. 20.1 Error Acknowledgement If a disturbance or error occurs, the Sunny Island goes into standby.
SMA Solar Technology America LLC 20 Troubleshooting No comparison between master and slave The error and event memory are not compared between the master and slaves. The errors of the slave device are acknowledged when the Sunny Island system is restarted. 20.4 Handling of Pending Errors during the Booting Procedure During the booting procedure, all pending failures are generally confirmed without an entry being made in the history.
20 Troubleshooting SMA Solar Technology America LLC Display no.
SMA Solar Technology America LLC 20 Troubleshooting Display no. Description E404 Manual generator stop E405 Manual error acknowledgment of generator error E406 Source of generator request E407 Current-regulated generator operation initiated E408 Current-controlled generator operation stopped 20.6.4 Category GRD Display no.
20 Troubleshooting SMA Solar Technology America LLC Display no.
SMA Solar Technology America LLC 20 Troubleshooting Display no. Description E853 Sunny Island Charger #3 detected E854 Sunny Island Charger #4 detected E901 SOC recalibration started E902 SOC recalibration stopped E903 Derating started E904 Derating stopped E905 Preventive self-disconnection to protect the battery from deep discharge 20.
20 Troubleshooting SMA Solar Technology America LLC 20.8.1 Category INV Display no.
SMA Solar Technology America LLC 20 Troubleshooting 20.8.2 Category BAT Display no.
20 Troubleshooting SMA Solar Technology America LLC Display no.
SMA Solar Technology America LLC 20 Troubleshooting Display no. Level Description W340 1 Disconnection from utility grid/generator due to voltage increase protection slave 1 W341 1 Disconnection from utility grid/generator due to voltage increase protection slave 2 W342 1 Disconnection from utility grid/generator due to voltage increase protection slave 3 W343 1 Disconnection from the external source, because the relation of the external voltage to the battery voltage is too high.
20 Troubleshooting SMA Solar Technology America LLC 20.8.4 Category GEN Display no. Level Description W401 1 Reverse power protection (generator) W402 1 Generator management switches into the locked error status (Fail-Lock) 20.8.5 Category GRD Display no.
SMA Solar Technology America LLC 20 Troubleshooting Display no.
20 Troubleshooting SMA Solar Technology America LLC Display no.
SMA Solar Technology America LLC 20 Troubleshooting 20.8.8 AUX Category Display no. Level Description F801 4 Plausibility check of contactors in a Multicluster Box failed W804 1 Grid operation not possible W805 1 Generator operation not possible F806 4 Multicluster Box settings do not match software settings.
20 Troubleshooting SMA Solar Technology America LLC Display no.
SMA Solar Technology America LLC 20 Troubleshooting Display no.
20 Troubleshooting SMA Solar Technology America LLC Why is the display of the Sunny Island dark and why is nothing shown on the display? • Is the DC circuit breaker of the Sunny Island switched to "ON"? In this case, the device has switched off to protect the battery from deep discharge (see Section 13.4 "State of Charge (SOC) and State of Health (SOH)", page 109). After self-disconnection, restart the Sunny Island as described in this document (see Section 9.
SMA Solar Technology America LLC 20 Troubleshooting What can I do when the battery cell of a lead-acid battery can no longer be used? • Remove the cell that can no longer be used from your battery bank. Start the Sunny Island and change the battery voltage in the QCG under "New Battery". What can I do when the QCG does not run? • Switch off the Sunny Island (see Section 9.3 "Switching Off", page 76) and restart it (see Section 9.1 "Switching On", page 75).
20 Troubleshooting SMA Solar Technology America LLC How is it possible to change between wintertime and summertime operation e.g. for alpine huts? • Save two different parameter sets on the SD memory card and activate them via parameter "550.02 ParaLod" (see Section 11.3 "Saving and Loading Parameters", page 98). What happens if the card inserted is not FAT16 formatted? • The Sunny Island displays the message "Incomp".
SMA Solar Technology America LLC 20 Troubleshooting Why is it that high outputs are being transferred back and forth between the clusters in the cluster network? • The nominal frequencies and voltages are defined differently. Correct this by means of the appropriate parameters. What is the meaning of the F221 error message? • Error message F221 appears when a battery with external battery management has been connected to the Sunny Island (e.g.
20 Troubleshooting SMA Solar Technology America LLC 2. Confirm the following view with . 3. Set the maximum external current, e.g. that of the generator. 4. Confirm the set value with . 5. Use the down arrow key. ☑ The display on the right appears. 6. Press to confirm. 7. Press . ☑ The emergency charge mode is started. Interrupt the emergency charge mode, e.g. in order to refill diesel: 1. Press to stop the Sunny Island.
SMA Solar Technology America LLC 20 Troubleshooting In emergency charge mode, process values are shown in the display. Parameters cannot be changed during the charging process. If the Sunny Island is restarted, the settings that were saved before the ECM are loaded. Bridge between AC1 and AC2 After emergency charge mode has been completed make sure to remove the bridge between AC1 and AC2! Restarting Observe information for restarting and wait for 15 minutes (see Section 9.
21 Accessory SMA Solar Technology America LLC 21 Accessory The following overview details the accessories and spare parts for your product. If necessary, you can order these from SMA Solar Technology or your distributor. Designation Brief description BatFuse-B.01 (250 A) 2-pole LV/HRC battery fuse-switch-disconnector, BATFUSE-B.01 size 1 for 1 Sunny Island, 3 DC inputs (1 x battery and 2 x Sunny Island Charger 50), 1 x auxiliary voltage output with 8 A (not UL certified) BatFuse-B.
SMA Solar Technology America LLC 22 Technical Data 22 Technical Data 22.
22 Technical Data SMA Solar Technology America LLC Battery Data Battery capacity for lithium-ion batteries Charge control Efficiency/power consumption Maximum efficiency Efficiency > 90% CEC weighted efficiency CBat 50 Ah to 10,000 Ah IUoU procedure with automatic full and equalization charge SI 4548-US-10 96% 5% Pnom to 120% Pnom 94.5% Efficiency curve Self-consumption with no load (in standby mode) 25 W (4 W) General Data Dimensions (W x H x D) 18.39 in x 24.10 in x 9.
SMA Solar Technology America LLC 22 Technical Data General Data Ambient temperature Interfaces − 13°F to +140°F ( − 25°C to +60°C) SI 4548-US-10 Number of LEDs 2 Number of buttons 4 Display Multifunction relay Communication Memory card Digital input level (Dig-In) Load switching limits multifunction relays 1 and 2 Two-line display 2 RS485, galvanically insulated (optional) SD memory card High level as of 5 V (up to 63 V), low level 0 V to 2 V AC: 6 A at 250 V DC: see graphic Load limitation curve
22 Technical Data SMA Solar Technology America LLC 22.
SMA Solar Technology America LLC 22 Technical Data Battery Data Charge control Efficiency/power consumption Maximum efficiency Efficiency > 90% CEC weighted efficiency IUoU procedure with automatic full and equalization charge SI 6048-US-10 96% 5 to 120% Pnom 94.0% Efficiency curve Self-consumption with no load (in standby mode) 25 W (< 4 W) General Data Dimensions (W x H x D in mm) 18.39 in x 24.10 x in 9.25 in (467 mm x 612 mm x 235 mm) Weight approx. 139 lb (approx.
22 Technical Data SMA Solar Technology America LLC General Data Device protection Ambient temperature Interfaces Short-circuit, overload, overtemperature − 13°F to +140°F ( − 25°C to +60°C) SI 6048-US-10 Number of LEDs 2 Number of buttons 4 Display Two-line display Multifunction relay Communication Memory card Digital input level (Dig-In) Load switching limits multifunction relays 1 and 2 2 RS485, galvanically insulated (optional) SD memory card High level as of 5 V (up to 63 V), low level 0 V to
SMA Solar Technology America LLC 23 Glossary 23 Glossary Absorption Phase Constant voltage phase: A charging phase using constant charging voltage. The charging current constantly decreases in this phase. AC Abbreviation for "Alternating Current" AC Coupling The AC side connection between loads, generators and storage devices. AGM Battery Absorbent Glass Mat separator battery. This is a battery where the electrolyte (a mixture of water and sulfuric acid) is bound to a glass fiber mat.
23 Glossary SMA Solar Technology America LLC Battery A battery is an electrochemical energy storage that can release previously stored chemical energy as electrical energy. A distinction is made between non-rechargeable batteries (often used in end-customer markets) and rechargeable batteries (batteries). In stand-alone grid systems, lead-acid batteries are almost always used and, very rarely, nickel-cadmium batteries are used as secondary rechargeable batteries.
SMA Solar Technology America LLC 23 Glossary DC Abbreviation for "Direct Current" Derating A controlled reduction in performance, usually dependent on component temperatures. Derating is initiated in order to avoid the shutting down of the complete plant. DSP Abbreviation for Digital Signal Processor. A DSP is a microprocessor chip especially developed for digital signal processing and control. Electrolyte A chemical solution that allows the conduction of ions within a battery.
23 Glossary SMA Solar Technology America LLC Float Charge Maintenance charge: Allows the batteries to be slowly charged to a state of charge of 100% without the negative effects of overcharging. Complete charging to 100% using float charge takes several days. For this reason, float charge is more important for battery-backup systems and less important for stand-alone grids. Sealed Lead-Acid Battery A type of battery in which the electrolyte (a mixture of water and sulfuric acid) is bound into a gel.
SMA Solar Technology America LLC 23 Glossary MPP Tracker Regulation of the power drawn so that a PV field remains as close as possible to the MPP. This operating point varies with the solar irradiation and the temperature conditions of the modules. MPP tracking optimizes the extraction of electrical power and is a feature of inverters and charge controllers.
23 Glossary SMA Solar Technology America LLC PV Field See PV array PV Array Technical device for the conversion of solar energy into electrical energy. All electrically connected (in series and in parallel) PV modules of a PV system are referred to as the PV array. PV Module Electrical connection of several PV cells encapsulated in an enclosure to protect the sensitive cells from mechanical stress and environmental influences.
SMA Solar Technology America LLC 23 Glossary Split-Phase A split-phase system is a three-conductor single-phase distribution system, commonly used in North America, the UK, Australia and New Zealand for single-family residential and light commercial applications up to 100 kVA. Its primary advantage is that it saves conductor material since a single-phase system with one neutral conductor is used, while on the supply side of the grid configuration only one line conductor is necessary.
23 Glossary SMA Solar Technology America LLC Inverter mode Operating mode of a battery inverter where it supplies the stand-alone grid from the battery energy. In this operating mode, the battery inverter is especially responsible for the control of frequency and voltage in the stand-alone grid. Central inverter An inverter concept in which all PV modules are connected to each other (in series and/or parallel) and which uses a single inverter for feeding energy into the utility grid.
SMA Solar Technology America LLC 24 Compliance Information 24 Compliance Information FCC Compliance This device complies with Part 15 of the FCC Rules. Operation is subject to the following conditions: 1. This device may not cause harmful interference, and 2. This device must accept any interference received, including interference that may cause undesired operation. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.
25 Contact SMA Solar Technology America LLC 25 Contact If you have technical problems with our products, please contact the SMA Service Line.
SMA Solar Technology www.SMA-Solar.
