SMA SUNNY BOY STORAGE 3.8-US Instructions D'installation page 20

4 Product Overview
transmission between the products and Sunny Portal via the data logger (e.g.,
SMA Data Manager) or distributing the inverters over several systems. If there is an existing Wi-Fi
or Ethernet connection, you can directly access your visualized system via the web browser on your
smart device (e.g. smartphone, tablet or laptop).
Wi-Fi
The product is equipped with a Wi-Fi interface as standard. The inverter is delivered with the WLAN
interface activated as standard. If you do not want to use WLAN, you can deactivate the WLAN
interface.
In addition, the product has a WPS function. The WPS function is for automatically connecting the
product to a network (e.g. via router) and establish a direct connection between the product and a
smart end device.
Modbus
The product is equipped with two Modbus interfaces.
One interface can be controlled via Ethernet and the other interface via RS485. The Modbus
interface via Ethernet is designed for industrial use – via SCADA systems, for example – and
deactivated as standard. The Modbus interface via Ethernet must be configured via the user
interface of the inverter (if necessary). The Modbus interface via RS485 is used for data exchanges
with an energy meter. The Modbus interface via RS485 must be configured via the user interface of
the inverter and set on the energy meter accordingly.
The Modbus interface via Ethernet has the following tasks:
• Remote query of measured values
• Remote setting of operating parameters
• Setpoint specifications for system control
• Controlling the battery
Grid management services
The inverter is a grid support multi-mode inverter.
The inverter was tested in accordance with the UL 1741 SA (September 7, 2016) and UL
1741SB / IEEE 1547-2018 (October 2022) to be compliant with the source requirements
documents of the states available at the time.
For connecting the inverter to the utility grid, no additional grid monitoring equipment is necessary.
A description of the tested functions and instructions on the activation and setting of functions can
be found in the technical information "Grid Support Utility Interactive Inverters" at www.SMA-
Solar.com.
Secure power supply operation
In case of a grid failure, the secure power supply operation supplies the loads with energy from the
battery. You can connect a standard outlet (120 V) and a standard switch to the inverter. You can
connect a load with a maximum of 16 A and 120 V to the emergency power outlet. The load is
supplied with energy from the battery during grid failure. The switch is used to enable and disable
secure power supply operation.
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SMA Solar Technology AG
Installation Manual