SMA SI 3324 Installation - Manual (Page 123)

SMA Technologie AG Communication Interface
Installation Guide SI3324/4248-14:SE2406 Page 123
15 Communication Interface
The communication interface is used to communicate with SMA communication
devices (e.g. Sunny Boy Control, Sunny WebBox) or a PC with appropriate software
(e.g. Sunny Data Control). Depending on the selected communication interface, up
to 50 inverters can be interconnected. Detailed information on this topic can be found
in the communication device manual, the software, or on the Internet at
www.SMA.de .
Die following communication interfaces can be built into the Sunny Island 3324/
4248:
• RS232
• RS485
The detailed wiring diagram for the individual communication interfaces can be
found in the communication device manual. This wiring diagram includes:
• Information on the type of cables required
• Which of the inverter's connections are used
• Whether or not the communications cables must be terminated
• Whether the PE needs to be connected to the cable shield
The next pages will describe the following:
• The housing feed-throughs for the communication interface
• The permissible cable routes in the Sunny Island 3324/4248
• The location of the sockets for connection of the communication wires
• The location of the interface port
Installation or replacement of the communication interface is only
to be carried out by a trained electrician.