SMA SUNNY ISLAND 4.4M Operating Manual page 22

4 Product Description
SMA Webconnect
The inverter is equipped with a Webconnect function as standard. The Webconnect function enables direct data
transmission between the inverters of a small-scale system and the Internet portal Sunny Portal without any additional
communication device and for a maximum of 4 inverters per Sunny Portal system. If there is an existing WLAN or
Ethernet connection, you can directly access your Sunny Portal system via the web browser on the computer, tablet PC
or smartphone.
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).
Limited function in the event of frost
The integrated WLAN interface is only designed for temperatures down to -20°C.
• Deactivate the WLAN interface at low temperatures (see Section 9.5 "Switching WLAN On and Off",
page 120).
Limited range
The WLAN interface integrated in the inverter has a limited range of 5 m.
• Take this range into consideration when establishing the WLAN connection.
Multicluster Communication
In a multicluster system, the masters of the clusters must communicate with each other via a separate CAN bus. The
Multicluster data module SI‑SYSCAN.BGx must be installed in each master for this multicluster communication. The
interface slot SISYSCAN is for connecting the Multicluster data module SI‑SYSCAN.BGx.
If the Sunny Islands are ordered with the communication interface multicluster CAN, the masters are delivered with
multicluster data modules.
Multicluster communication only functions with the device types SI6.0H-12 und SI8.0H-12.
Data Storage
Event messages and instantaneous values are saved in the Sunny Island. This data can be evaluated and thus the
operating processes in the Sunny Island system can be traced. From this, for example, parameter settings can be
derived that will e.g. increase the self-consumption of PV energy or the service life of the battery. For SMA Service, this
data simplifies the analysis of any errors present and the identification of possible solutions.
The storage capacity of the inverter can be extended with the optional micro SD card. Thus, for example, data can be
recorded over longer time periods, enabling extended diagnostics possibilities to be used (see Section 17.13,
page 186).
22 SI44M-80H-12-BE-en-10
SMA Solar Technology AG
Operating Manual