Installation Manual

Class 1 wiring methods are to be used for field wiring connection to the terminals of the
communication interface.
WLAN
The inverter is equipped with a WLAN 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 inverter has a WPS (WiFi Protected Setup) function. The WPS function is for
automatically connecting the inverter to a device in the same network as the inverter (e.g. router,
computer, tablet PC or smartphone).
Expanding the radio range in the WLAN network
In order to expand the radio range of the inverter in the WLAN network, you can install the
Antenna Extension Kit accessory set in the inverter.
Modbus
The inverter is equipped with a Modbus interface. The Modbus interface is deactivated by default
and must be configured as needed.
The Modbus interface of the supported SMA devices is designed for industrial use and has the
following tasks:
• Remote query of measured values
• Remote setting of operating parameters
• Setpoint specifications for system control
4-String-Operation
The "4-String-Operation" function allows the DC inputs A and B of the inverter to operate in parallel
and up to three strings to be connected to it in parallel. As a result, as opposed to normal
operation, up to four strings can be connected to the inverter. The inverter automatically detects
whether the DC inputs A and B are operated in parallel.
Module slots
The inverter is standard-equipped with two module slots. The module slots are located on the
communication assembly and allow additional modules to be connected (e.g. SMA Sensor
Module). The modules are available as accessories. The installation of two identical modules is not
permissible.
Secure power supply operation
You can connect an external outlet and a switch to the inverter in order to activate the outlet. In
case of a grid failure, the outlet supplies a load with current from the PV system. When the outlet is
activated via the switch, the load is supplied with current from the PV system. The inverter
automatically regulates the energy supply of the outlet depending on the solar irradiation on the PV
system. When the outlet is activated and a load is supplied with current from the PV system, the
inverter is disconnected from the utility grid and does not feed into the utility grid.
4 Product Description
SMA Solar Technology America LLC
Installation manualSB5.0-6.0-1SP-US-40-IA-xx-1016
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