SMA Sunny Boy SB 700U Installation Manual
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SMA Sunny Boy SB 700U Installation Manual

SMA Sunny Boy SB 700U Installation Manual

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

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Summary of Contents for SMA Sunny Boy SB 700U

  • Page 1 Sunny Boy SB 700U Installation Guide Version 1.1 SB700U-11:SE3207 TBE-SB07U...
  • Page 2 SMA America SB700U-11:SE3207...

  • Page 3: Revision History

    Specifications are subject to change without notice. Every attempt has been made to make this document complete, accurate, and up-to-date. Readers are cautioned, however, that SMA America reserves the right to make changes without notice and shall not be responsible for any damages, including indirect, incidental or...

  • Page 4: Safety And Hazard Symbols

    This symbol appears beside instructions, cautions, and warnings that deal with portions of the equipment that can operate at temperatures high enough to cause burns. SMA America SB700U-11:SE3207...

  • Page 5: Cautions And Warnings

    SMA equipment and/or other equipment connected to the SMA equipment.

  • Page 6: General Warnings

    Sunny Boy’s heat sink while the unit is in operation. Warranty All Sunny Boy SB 700U inverters sold in the USA have a five-year warranty, as indicated on the warranty card included in the Sunny Boy shipping container. For...

  • Page 7: Table Of Contents

    RS-485 Communication ......4-18 Replacing the Cover ......4-20 Commissioning SB700U-11:SE3207 SMA America...
  • Page 8 Trip Limits / Trip Times ........8-5 Torque Values and Wire Sizes......8-5 viii SMA AmericaSB700U-11:SE3207...

  • Page 9: Introduction

    Installation Guide before starting the installa- tion. WARNING:Lethal voltages are present at various points in a PV system. For safety reasons, it is rec- ommended that only trained professionals attempt to install this equipment. SB700U-11:SE3207 SMA America...

  • Page 10: Product Overview

    Figure 1-1 Sunny Boy 700U Installed in a Utility Interactive PV System Note:Policies vary from one utility company to another. Con- sult with a representative of the local utility company before planning and installing a PV system. SMA America SB700U-11:SE3207...

  • Page 11: Safety

    Systems as well as IEEE-929-2000 Recommended Practice for Utility Interface of Photovoltaic Systems and IEEE 1547 Standard for Interconnecting Distributed Resources with Electric Power Systems. The Sunny Boy is also UL listed under UL1741 for use in Canada. SB700U-11:SE3207 SMA America...
  • Page 12 Sunny Boy. As a result, the Sunny Boy represents state-of-the-art technology, high reliability and overall ease of use - all the qualities you’ve come to expect from SMA, the industry leader in inverter technology. Some of the features included are: • LCD •...

  • Page 13: Installation Overview

    Commissioning involves applying DC input power to the Sunny Boy, observing the LED indicators on the cover, and resolving any problems that occur. Section 6: Displays and Messages This section provides tips and procedures for resolving problems that can occur during installation. SB700U-11:SE3207 SMA America...
  • Page 14 SMA America SB700U-11:SE3207...

  • Page 15: Unpacking And Inspection

    If possible, have someone help you when you unpack the Sunny Boy. If you need assistance in dealing with a damaged Sunny Boy, contact your SMA dealer or SMA America. Contact information for SMA America is provided below.
  • Page 16 SMA AmericaSB700U-11:SE3207...

  • Page 17: Mounting The Sunny Boy

    Note:Occasionally, the rating label on the Sunny Boy will need to be referred to. For this reason, it is required that the inverter be mounted so that the rating label on the side of the inverter be visible. SB700U-11:SE3207 SMA America...

  • Page 18: Choosing A Mounting Location

    Do not mount the Sunny Boy on plasterboard (sheet-rock) or thin wood panelling. CAUTION:All electrical conduits and any communication cables must be positioned and/or sealed so that no water can enter the inverter enclosure through these conduits and cables. SMA America SB700U-11:SE3207...
  • Page 19 WARNING:To prevent electrical shock or other inju- ry, check for existing electrical or plumbing installa- tions in the walls where you plan to drill mounting holes for the Sunny Boy prior to drilling. SB700U-11:SE3207 SMA America...

  • Page 20: Dimensions And Recommended Clearances

    Boy produces to dissipate freely. Note: If additional ventilation is required use the optional Sunny Breeze fan that mounts to the heat sink. Note: The National Electrical Code may require significantly larger working clearances (see NEC Section 110.26). SMA America SB700U-11:SE3207...
  • Page 21 Wall-Mounting Bracket Figure 3-3 Dimensions of the wall-mounting bracket SB700U-11:SE3207 SMA America...

  • Page 22: Mounting Procedure

    DO NOT use molly or toggle bolts to mount the Sunny Boy to sheet rock or panelling. 4. Set the bracket aside temporarily, and drill holes at the marks you made on the SMA America SB700U-11:SE3207...
  • Page 23 9. Insert an M6x10 bolt through the hole in the mounting strap and into the threaded hole in the bottom end of the wall-mounting bracket (see #3 in Figure 3-4). 10. Tighten the bolt fully (do not overtighten). SB700U-11:SE3207 SMA America...
  • Page 24 11. Verify that the Sunny Boy 700U is firmly mounted in place. SMA America SB700U-11:SE3207...

  • Page 25: Wiring And Connecting The Sunny Boy

    National Electric Code, ANSI/NFPA 70, is the responsibility of the installer. Note: The Photovoltaic System Grounding shall be installed per the requirements of sections 690.41 through 690.47 of the National Electric Code, ANSI/NFPA 70, and is the responsibility of the installer. SB700U-11:SE3207 SMA America...

  • Page 26: Sequence Of Connecting

    National Electrical Code (NEC), ANSI/NFPA 70. WARNING: Before connecting the Sunny Boy to the electrical utility grid, contact the local utility compa- ny. This connection must be made only by qualified personnel. SMA America SB700U-11:SE3207...

  • Page 27: Sunny Boy 700U Internal Components

    Locating Internal Components Figure 4-1shows the internal components of the Sunny Boy 700U. Refer to this illustration whenever you need to locate a component to complete a step of the installation procedure. SB700U-11:SE3207 SMA America...
  • Page 28 AC and DC wiring terminals (see Figure 4-1) accept a maximum wire size of #6 AWG. Knockouts are provided on the bottom of the Sunny Boy near each of the terminals for the wires to enter the case (Figure 4-2). SMA America SB700U-11:SE3207...
  • Page 29 Figure 4-2 Bottom View of the Sunny Boy 700U Showing 1/2” Wiring Knockouts CAUTION: All knockouts in the Sunny Boy chassis are sized for 1/2-inch rigid conduit (EMT). DO NOT enlarge any of these holes, as this is a violation of UL requirements and voids the SMA warranty. SB700U-11:SE3207 SMA America...

  • Page 30: Wiring The Ac Output

    See NEC Section 690-64(b)(2). WARNING: To reduce the risk of fire, connect only to a circuit provided with 15 amperes maximum branch circuit overcurrent protection in accordance with the National Electric Code, ANSI/NFPA 70. SMA America SB700U-11:SE3207...
  • Page 31 Figure 4-3 Energy Losses in Various Wire Sizes and Wire Lengths The „Voltage Drop Calculator“ tool for calculating the Note: potential losses in AC wires is available on www.sma-ameri- ca.com. The Sunny Boy 700U is designed to feed 106 V AC to 132 V AC to the utility grid at frequencies from 59.3 Hz to 60.5 Hz.

  • Page 32: Connecting The Ac Wires

    8. Connect the N (AC neutral) wire to the terminal labeled N in the Sunny Boy. 9. Fasten the wires while applying a torque of 15 in-lbs. 10. Verify that all connections are correctly wired and properly torqued. SMA America SB700U-11:SE3207...
  • Page 33 L1 (AC Line) wire connected to L terminal N (AC Neutral) wire connected 2 3 5 7 to N terminal PE PE PE PE Equipment ground wire connected to PE terminal Figure 4-4 AC Connection Terminals SB700U-11:SE3207 SMA America...

  • Page 34: Wiring The Dc Input

    • 6 - 14 AWG • 90° C (194° F) • solid or stranded copper wire WARNING:The DC disconnect for the inverter must have a minimum rating of 250 V DC and 18 A con- tinuous. 4-10 SMA America SB700U-11:SE3207...

  • Page 35: Configuring The Dc Input-Voltage Range

    DC range-configuration plug and jumper (Fig- ure 4-6 and Table 4-2 on pages 4-12 and 4-13). Applying an open-circuit voltage that does exceed the maximum DC in- put voltage will cause irreversible damage to the Sunny Boy and void the warranty! SB700U-11:SE3207 SMA America 4-11...
  • Page 36 V DC. Do not discard the jumper when the Sunny Boy is set for 125 V DC to 250 V DC. Store the jumper on a single, empty pin in case it is needed later (see Table 4-2). 4-12 SMA America SB700U-11:SE3207...
  • Page 37 75 V DC to 150 V DC 3.8 A 4.3 A 460 W Use the online string-sizing calculator at < www.sma- Note: america.com > to determine the correct string configuration (see Figure 4-7). To navigate to the string-sizing calculator, click “String Sizing” in the menu bar on the right side of the page.
  • Page 38 Figure 4-7 Online String-Configuration Calculator at < www.sma-america.com > 4-14 SMA America SB700U-11:SE3207...

  • Page 39: Connecting The Dc Wires

    DC-input wires from the PV array to the Sunny Boy (see "Configuring the DC Input- Voltage Range" on page 4-11). Check both the polarity and the open-circuit voltage from the PV strings! SB700U-11:SE3207 SMA America 4-15...
  • Page 40 5. Pull the DC wires from the DC disconnect through the conduit into the interior of the Sunny Boy. 6. Connect the positive DC wire to the terminal labeled DC+ in the Sunny Boy. 7. Connect the negative DC wire to the terminal labeled DC– in the Sunny Boy. 4-16 SMA America SB700U-11:SE3207...
  • Page 41 8. Connect the positive and negative DC wires to the appropriate terminals in the DC disconnect enclosure. 9. Fasten the wires while applying a torque of 15 in-lbs. 10. Verify that all connections are correctly wired and properly torqued. SB700U-11:SE3207 SMA America 4-17...

  • Page 42: Connecting Communication Cables

    RS-485 bus, please see “Technical Note: RS-485 Communication” in the Tech Up- dates section of our web site at www.sma-america.com 1. Connect the three insulated wires of the RS-485 cable to terminals 2, 5, and 7 of the communication terminal block.
  • Page 43 For detailed information, please see the Tech Updates section of our web site at www.sma-america.com There you will find tech notes on all of the Sunny Boy communication options. Figure 4-9 Detail of RS-485 Termination and Jumper Settings...

  • Page 44: Replacing The Cover

    4. Carefully position the cover on the front of the Sunny Boy so that the four holes in the cover are aligned correctly with the four threaded holes in the case. Be sure when reinstalling the four screws that the lock Note: washers are installed correctly. The teeth of the washers 4-20 SMA America SB700U-11:SE3207...
  • Page 45 6. Verify that the cover is in the correct position and that the seal is in place between the case and the cover. 7. Tighten the cover screws fully, and reinspect the seal to ensure that it is in the correct position. SB700U-11:SE3207 SMA America 4-21...
  • Page 46 4-22 SMA America SB700U-11:SE3207...

  • Page 47: Commissioning

    3. If no AC faults are detected, the “Wait“ mode will end after approximately 10 seconds and the green LED will stop blinking, remain on and the Sunny Boy will begin to operate normally. If an AC fault was registered, the Sunny Boy will wait 5 minutes prior to starting. SB700U-11:SE3207 SMA America...
  • Page 48 AC disturbance, the inverter will wait 5 minutes after the AC power has been restored to reconnect. When servicing the inverter, always disconnect the DC first, then the AC. SMA America SB700U-11:SE3207...

  • Page 49: Displays And Messages

    The red and yellow LEDs combined indicate that the GFDI has detected a ground fault. The ground fault must be located and cleared and the inverter reset manually. The inverter will not restart automatically after detecting a ground fault. SB700U-11:SE3207 SMA America...
  • Page 50 Figure 6-1 The Sunny Boy LED Status Indicator SMA America SB700U-11:SE3207...

  • Page 51: Led Operation Indicators

    Occasionally, during inclimate weather or low solar radiation, the LEDs may all turn on at once and then go off again. This indicates that the inverter is trying to initialize but the power available from the array is not sufficient to operate. This is not a malfunction. SB700U-11:SE3207 SMA America...
  • Page 52 Note:If the inverter fails to connect to the utility grid 3 times in a row, it will wait 10 minutes before the next attempt. SMA America SB700U-11:SE3207...
  • Page 53 (The parameter name is “V-Const” or „U-Konst“ depending on which software you are using to access the parameters.) Derating The inverter is feeding power to the utility grid at a derated rate due to excessive heating of the heat sink. SB700U-11:SE3207 SMA America...

  • Page 54: Led Fault Indicators

    If the fuse has blown due to a ground fault, the fault must be cleared before replacing the fuse. CAUTION:For continued protection against the risk of fire, replace the GFDI fuse with fuses of the same type and rating only. The recommended type is a Littelfuse KLKD 1 Amp, 600V AC/DC SMA America SB700U-11:SE3207...
  • Page 55 The Sunny Boy has detected a fault with the internal utility monitoring system. When the inverter detects a fault of this kind it will no longer connect to the utility grid. To correct this, the inverter must be serviced by a qualified service technician. SB700U-11:SE3207 SMA America...
  • Page 56 CAUTION:Have the grid connection to the Sunny Boy checked only by a qualified electrician. WARNING:If troubleshooting methods require that you open the Sunny Boy inverter, do so only after disconnecting all sources of power to the Sunny Boy. SMA America SB700U-11:SE3207...
  • Page 57 The inverter has detected an input voltage that is too high for safe operation. WARNING:Disconnect the PV array from the Sunny immediately! High input voltage permanently damage the inverter. Have the PV array checked by a qualified technician. SB700U-11:SE3207 SMA America...
  • Page 58 The code is repeated 3 times. If the condition remains the code will continue to be sent. The inverter has encountered a condition that makes it impossible to return to normal operation and will most likely require servicing. CAUTION:The Sunny Boy must be serviced only by a qualified technician. 6-10 SMA America SB700U-11:SE3207...

  • Page 59: Status Messages On The Display

    Sunny Boy 700U BFR Version x.xx The installed firmware versions of the control system SRR Version x.xx (BFR) and the current control processor (SRR) are Initialization of the display on the displayed after 6 seconds. Sunny Boy 700U SB700U-11:SE3207 SMA America 6-11...
  • Page 60 PV-voltage. Current AC power and AC voltage E-total 179.2kWh Finally the accumulated yield of the device since h-total 512h installation is displayed together with the total operating Total energy yield hours. and total operating hours 6-12 SMA America SB700U-11:SE3207...
  • Page 61 "Measuring Channels and Messages" (page 6-18). Error „Error ROM“ indicates that the Sunny Boy has detected a defective firmware in the EEPROM. Contact SMA in Indication of defective fimware order to remove this failure. SB700U-11:SE3207...
  • Page 62 DC input connectors WARNING:Disconnect the inverter from the supply voltage immediately, otherwise it can be severely dam- aged. Check the input voltage and your module configuration before you reconnect the DC voltage to the inverter again. 6-14 SMA America SB700U-11:SE3207...

  • Page 63: Sunny Display Language Selection

    Position of the switches for configuration of the Sunny Display language Figure 6-3 Language Selecting Switches for the Sunny Display Option Language Switch S2 Switch S1 German English French Spanish Language Switch S2 Switch S1 Switch S2 Switch S1 SB700U-11:SE3207 SMA America 6-15...

  • Page 64: Communication Options

    Sunny Portal via internet gives you entirely new possibilities for data acquisition and evaluation as well as the visualization on a PC with an internet browser. No additional software needs to be installed. 6-16 SMA America SB700U-11:SE3207...
  • Page 65 Sunny Portal The Sunny Portal is a high performance interface from SMA for the monitoring and presentation of your system on the Internet. Details can be obtained directly from www.SUNNY-PORTAL.com.

  • Page 66: Measuring Channels And Messages

    Sunny Boy and the Sunny Boy has been active including the time it was not able to feed to the utility with respect to too low voltage or operation in stop mode. Power On: total system start ups Event-Cnt: Event counter 6-18 SMA America SB700U-11:SE3207...

  • Page 67: Operating Mode

    Disturbance: A condition is only considered a Disturbance for as long as the reasons for this condition still are present. Error: A condition is considered an Error whenever the inverter cannot restart without user interaction. SB700U-11:SE3207 SMA America 6-19...

  • Page 68: Sunny Boy 700U Operating Parameters

    Default value is optimal for installations < 30 h-Total 0 ... 200000 Total operating hours (h_Total) of the inverter. Changing the value can be necessary when a Sunny Boy is exchanged and you wish to match the previously acquired data 6-20 SMA America SB700U-11:SE3207...
  • Page 69 75 ... 330 PV Setpoint voltage for constant voltage operation. These parameters only important in case the parameter „Operating Mode“ is set to „V-const“. Vpv-Start 75 ... 150 Voltage where the Sunny Boy starts connecting to the grid. SB700U-11:SE3207 SMA America 6-21...
  • Page 70 Default value is optimal for installations < 30 h-Total 0 ... 200000 Total operating hours (h_Total) of the inverter. Changing the value can be necessary when a Sunny Boy is exchanged and you wish to match the previously acquired data 6-22 SMA America SB700U-11:SE3207...
  • Page 71 75 ... 330 PV Setpoint voltage for constant voltage operation. These parameters only important in case the parameter „Operating Mode“ is set to „V-const“. Vpv-Start 100 ... 200 Voltage where the Sunny Boy starts connecting to the grid. SB700U-11:SE3207 SMA America 6-23...
  • Page 72 Default value is optimal for installations < 30 h-Total 0 ... 200000 Total operating hours (h_Total) of the inverter. Changing the value can be necessary when a Sunny Boy is exchanged and you wish to match the previously acquired data 6-24 SMA America SB700U-11:SE3207...
  • Page 73 75 ... 330 PV Setpoint voltage for constant voltage operation. These parameters only important in case the parameter „Operating Mode“ is set to „V-const“. Vpv-Start 125 ... 250 Voltage where the Sunny Boy starts connecting to the grid. SB700U-11:SE3207 SMA America 6-25...
  • Page 74 Unit Range Default Description Plimit Upper limit of AC output power SMA-SN Serial Number of the Sunny Boy Software-BFR Firmware version of the operation control unit (BFR) Software-SRR Firmware version of the current control unit (SRR) 6-26 SMA America SB700U-11:SE3207...

  • Page 75: Troubleshooting

    • If the system problem persists, contact technical support at: 530.273.4895 Ext.101 In order to better assist you when contacting SMA America, please provide the following information. This information is required before removing the inverter from service and prior to making a warranty claim.
  • Page 76 • Open circuit voltage (Voc) of the module • Number of modules in each string If it becomes necessary to send the Sunny Boy back to the manufacturer for service, please ship it in the original box to avoid damage during shipping. SMA America SB700U-11:SE3207...

  • Page 77: Error Messages

    Contact SMA about how to change the grid monitoring parameters of your Sun- ny Boy. If the grid frequency is within the tolerable range and you still observe the failure message „Fac-Bfr“...
  • Page 78 OFFSET Grid monitoring self-test failed. Error The internal test of the Sunny Boy Control system firmware Error failed. Contact SMA in case you observe this failure often. Shut-Down Internal over current continuous Error Vac-Bfr The AC grid voltage is exceeding the permissible range.

  • Page 79: Technical Specifications

    • Consult the dealer or an experienced radio/TV technician for help. • Caution: Changes or modifications not expressly approved by SMA America, Inc. could void the user’s authority to operate this equipment. Contact SMA America for information...

  • Page 80: Sunny Boy Wiring Diagram

    Sunny Boy Wiring Diagram Sunny Boy connection to 120 V AC utility grids. SUNNY BOY 700U INVERTER BREAKER SIZE 1p 10 Amp The AC disconnect switch shown above may or may not be required by the local utility. SMA America SB700U-11:SE3207...

  • Page 81: Specifications

    91.5 % Cooling Convection cooling (no fan) PV Start Voltage 150 V DC/ 125 V DC / 95 V DC Maximum AC Continuous 6.6 A / Output Current 5.7 A / 4.3 A Maximum DC Input Current SB700U-11:SE3207 SMA America...
  • Page 82 (322 W x 320 H x 180 D mm) Weight 35 lbs. (16 kg) Compliance UL1741, UL 1998, IEEE 929, IEEE 1547, IEEE C37.90.1, IEEE C62.41.2 (test conditions 2 kV / 1 kA), FCC Part 15 A & B Specifications subject to change without notice. SMA America SB700U-11:SE3207...

  • Page 83: Trip Limits / Trip Times

    • Trip Frequency Accuracy: ± 0.1 % of nominal frequency Torque Values and Wire Sizes Terminal in. lbs. Wire Size AC Terminal Blocks 6 - 14 AWG DC Terminal Blocks 6 - 10 AWG Protective Earth Terminal 6 - 14 AWG Blocks SB700U-11:SE3207 SMA America...
  • Page 84 SMA America SB700U-11:SE3207...
  • Page 86 12438 Loma Rica Drive, Unit C Grass Valley, CA 95945 Phone 530.273.4895 Fax 530.274.7271 E-mail: info@sma-america.com Toll Free 888–4SMAUSA SMA Technologie AG SMA Ibérica Tecnología Solar, S.L. Niestetal, Germany Barcelona, Spain E-mail: info@SMA.de E-mail: info@SMA-Iberica.com SMA Beijing Commercial Co., Ltd. SMA Italia S.r.l.

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