SMA Sunny Island 2012 Technical Description page 57

SMA Solar Technology AG
When installing the communications interface proceed as follows:
1. Lay the interface's communication cable in
one of the free openings of the cable conduit
seal's inner rubber element.
Plan a sufficient lead length from the
enclosure opening to the "ComOut" socket
on the conductor board in the Sunny Island.
2. Introduce the communication cable into the
enclosure from outside.
3. Insert the RJ45 plug into the "ComOut" socket
in the Sunny Island. The plug snaps audibly
into place.
4. Reassemble the cable conduit unit and
reinsert it into the opening on the floor of the
Sunny Island.
5. Fit any unused openings on the enclosure
with blind seals.
6. Connect the other end of the communication
cable to the communication device.
Find the description of which three pins you should use in the installation instructions of the
communication device.
The following table shows the allocation of these pins to the corresponding pins of the RJ45
socket.
WebBox Pin Assignment
2
7
5
7. Terminating the Sunny Island using RS485.
The RS485 data bus of Sunny Island is terminated with a plug. This plug is already pre-
installed in your Sunny Island. Remove this plug only if you intend to connect another
communication device.
8. Plug the communications interface into the board.
Technical Description
RS485
A (Data+)
B (Data-)
GND
Sunny Island Electrical Connection
Interface port
(Piggy Back) RS485
RJ45 Socket
3
6
2
SI2012_2224-TEN082311 57