Product Introduction
The SMA Sunny Boy 5.0-US (Part Number: SB5.0-1SP-US-40) is a 5000 Watt, 600V DC, 1-Phase, NEMA 3R photovoltaic inverter designed for grid-tie applications. It features an integrated disconnect, transformerless design, and offers 240V or 208V AC output. This model includes AFCI (Arc Fault Circuit Interrupter) and Secure Power Supply (SPS) capabilities, along with integrated WLAN for monitoring and communication.
A front-angled view of the SMA Sunny Boy 5.0-US inverter, showcasing its gray and black casing with the SMA logo and 'SUNNY BOY' branding.
Key Features
- Wattage: 5000W
- AC Voltage Output: 208V, 240V
- DC Voltage Input: 600V
- Type: Transformerless, Integrated Disconnect, Inverter
- Additional Capabilities: AFCI & Secure Power Supply (SPS) capable, Integrated WLAN
An overview sheet highlighting key features of the SMA Sunny Boy series, including SunSpec certified technology, reduced labor installation, ShadeFix optimization, and integrated WLAN.
3. Scope of Delivery
The following components are typically included in the scope of delivery for the Sunny Boy inverter. Please verify all items upon receipt.
An illustration showing the various components included in the scope of delivery for the SMA Sunny Boy inverter, such as the inverter unit, terminal blocks, and mounting hardware.
| Position | Quantity | Designation |
|---|---|---|
| A | 1 | Inverter |
| B | 1 | Hexagon socket cap head screw M5 x 60 (not required) |
| C | 1 | Installation manual, production test report, supplementary sheet with the default settings |
| D | 1 | Terminal block for the DC connection |
| E | 1 | Terminal block for the AC connection |
| F | 1 | Terminal block for connecting the outlet for secure power supply operation |
| G | 1 | 3-pole terminal block for the connection to the multifunction relay |
| H | 1 | 2-pole terminal block for the switch connection for secure power supply operation |
| I | 5 | Clamping bracket |
| J | 5 | Cylindrical screw M5 x 16 |
| K | 5 | Washer M5 |
| L | 5 | Spring washer M5 |
4. Product Overview
4.1 Product Description
The diagrams below illustrate the design and key components of the SMA Sunny Boy inverter.
Diagrams illustrating the design of the SMA Sunny Boy inverter from different angles, labeling key components like the power unit, connection unit, and various ports.
| Position | Designation |
|---|---|
| A | Power Unit |
| B | Enclosure lid of the Power Unit |
| C | Enclosure lid for the Connection Unit |
| D | Connection Unit |
| E | Warning label with compliance information |
| F | DC load-break switch |
| G | Type label |
| H | Fan (only with Sunny Boy 7.0 and 7.7) |
The type label (G) uniquely identifies the inverter. It is permanently attached to the product. You will find the following information on the type label:
- Inverter device type (Model)
- Serial number of the Power Unit (Serial No. Power Unit or S/N Power Unit)
- Date of manufacture
- Device-specific characteristics
Technical Specifications
Detailed technical data for the Sunny Boy 5.0-US inverter, including input, output, efficiency, and general characteristics, are provided in the tables below. Refer to these specifications for proper system design and operation.
A table detailing the technical specifications for Sunny Boy 3.0-US, 3.8-US, and 5.0-US models, including input/output data, efficiency, and general dimensions.
A table detailing the technical specifications for Sunny Boy 6.0-US, 7.0-US, and 7.7-US models, including input/output data, efficiency, and general dimensions.
Installation and Setup
Proper installation is crucial for the safe and efficient operation of your SMA Sunny Boy inverter. It is highly recommended that installation be performed by a certified professional.
Site Selection
- Choose a location that is easily accessible for maintenance and inspection.
- Ensure adequate ventilation and clearance around the inverter for heat dissipation.
- Protect the inverter from direct sunlight, rain, and extreme temperatures. The inverter has a NEMA 3R enclosure for outdoor use.
Mounting
- Mount the inverter vertically on a sturdy, non-combustible surface.
- Use appropriate mounting hardware as specified in the installation guide.
Electrical Connections
- All electrical wiring must comply with local and national electrical codes (e.g., NEC).
- Connect the DC input from the solar array to the designated DC terminals.
- Connect the AC output to the electrical grid via a dedicated circuit breaker.
- Ensure proper grounding of the inverter.
Commissioning
- After all electrical connections are secure, close the DC and AC disconnects.
- The inverter will perform a self-test and attempt to synchronize with the grid.
- Monitor the inverter's display or use the integrated WLAN for initial setup and to confirm proper operation.
Operation
Once installed and commissioned, the SMA Sunny Boy inverter operates largely automatically, converting DC power from your solar panels into AC power for your home or the grid.
Starting the Inverter
- Ensure the DC load-break switch on the inverter is in the 'ON' position.
- Ensure the AC circuit breaker connected to the inverter is in the 'ON' position.
- The inverter will automatically start producing power when sufficient solar irradiance is available and grid conditions are met.
Monitoring Performance
- The inverter features an integrated WLAN interface for monitoring.
- Access performance data, operational status, and system messages via the SMA monitoring portal or a compatible mobile application.
Secure Power Supply (SPS)
- The Secure Power Supply feature provides a dedicated power outlet for essential loads during a grid outage.
- Refer to the detailed installation manual for instructions on connecting and utilizing the SPS outlet.
Maintenance
Regular maintenance helps ensure the longevity and optimal performance of your SMA Sunny Boy inverter.
Routine Checks
- Periodically inspect the inverter for any visible damage, loose connections, or unusual noises.
- Check the display for any error messages or warnings.
- Ensure ventilation openings are clear of obstructions.
Cleaning
- Keep the inverter's exterior clean. Use a soft, damp cloth to wipe down the casing.
- Do not use abrasive cleaners or solvents.
Firmware Updates
- SMA may release firmware updates to improve performance or add new features.
- Consult the SMA website or your installer for information on available updates and the procedure for installation.
Troubleshooting
This section provides guidance for common issues you might encounter with your SMA Sunny Boy inverter. For complex problems, contact a certified solar professional.
Common Issues and Solutions
- Inverter Not Producing Power:
- Check if the DC and AC disconnects are in the 'ON' position.
- Verify that there is sufficient sunlight on the solar panels.
- Check the inverter display for error codes and consult the manual for their meaning.
- Ensure grid power is present and stable.
- Error Message on Display:
- Note the exact error code or message.
- Refer to the inverter's detailed operating manual for a list of error codes and recommended actions.
- Some errors may require a system reset (turning off and on both DC and AC disconnects) or professional intervention.
- Low Power Production:
- Check for shading on solar panels.
- Ensure solar panels are clean.
- Verify that all string connections are secure.
- Consult the monitoring portal for historical performance data to identify trends.
- No Communication via WLAN:
- Ensure the inverter's WLAN is enabled and configured correctly.
- Check your local network (router, Wi-Fi signal strength).
- Restart the inverter and your network equipment.
Warranty and Support
SMA provides a manufacturer's warranty for the Sunny Boy 5.0-US inverter. The specific terms and duration of the warranty are detailed in the warranty document provided with your product.
Important Note on Support: SMA's direct technical support is primarily provided to certified installers. If you are an end-user experiencing issues, it is recommended to first contact your original installer or a qualified solar professional for assistance. They are equipped to diagnose problems and facilitate warranty claims if necessary.
For general product information, documentation, and to find certified installers, please visit the official SMA America website:
A visual summary of the benefits of the SMA Sunny Boy inverter, emphasizing simple design, value-driven sales, improved stocking, streamlined installation, and superior service.
