SMA SI 3.0-11 Installation - Manual (Page 18)

5 Product Description SMA Solar Technology AG
18 SI30M-44M-60H-80H-IA-en-30 Installation Manual
5.4 Communication
The Sunny Island is equipped with two interface slots for the connection of SMA communication interfaces.
Interface slot SICOMSMA
The interface slot SICOMSMA is for connecting the Speedwire data module SWDMSI-xx or the RS485 communication
interface SI-COMSMA.BGx.
The Speedwire data module SWDMSI-xx allows the Sunny Island inverter to be integrated into a Speedwire network.
Speedwire is a cable-based type of communication based on the Ethernet standard and the communication protocol
SMA Data2+. This enables inverter-optimized 10/100 Mbit data transmission between Speedwire devices, e.g.
between Sunny Island and Sunny Home Manager.
The SI-COMSMA.BGx communication interface allows the Sunny Island inverter to be integrated into an RS485
communication bus. You can connect the Sunny Island to the following products using RS485:
• SMA communication products (e.g. Sunny WebBox)
• PV inverters
• Wind power inverters
• Extension cluster masters
If the Sunny Island inverters are ordered with the RS485 communication interface SI-COMSMA.BGx or with the
Speedwire data module SWDMSI-xx, the Sunny Island inverters are delivered with premounted communication
interfaces.
Interface slot SISYSCAN
On Sunny Island device types SI6.0H-11 or SI8.0H-11, the interface slot SISYSCAN is for connecting the multicluster
data module SI-SYSCAN.BGx.
In a multicluster system, the masters of the clusters must communicate with each other via a separate CAN bus. An
SI-SYSCAN.BGx communication interface must be installed in each master for multicluster communication.
If the Sunny Island inverters are ordered with the communication interface SI-SYSCAN.BGx, the masters are delivered
with premounted communication interfaces.