SMA S Technical Description page 63

SMA Solar Technology AG
To install the communication interface, proceed as follows:
1. Insert the communication cable of the interface into the last available hollowed out section of
the internal rubber insert.
Make sure the cable is long enough to reach from the housing opening to the desired "ComOut"
connection socket on the circuit board of the Sunny Backup 2200.
2. Pull the communication cable into the housing from the outside.
3. Insert the RJ45 plug of the communication cable into the "ComOut" connection socket on the
Sunny Backup 2200. The plug will audibly snap into place.
4. Re-assemble the feed-through element and insert it in the installation opening on the base of the
Sunny Backup 2200 housing.
5. Connect the other end of the
communication cable on the
communication device.
The installation guide of the communication
device specifies which three pins should be
connected.
The following table shows the assignment of
these pins to the corresponding pins of the
RJ45 socket.
WebBox pin assignment
2
7
5
6. Terminate the Sunny Backup 2200 at RS485.
In the Sunny Backup 2200, the RS485 data bus is terminated using a plug. This plug is already
pre-installed in the Sunny Backup 2200. Please only remove the plug if you want to connect
another communication device.
7. Plug the communication interface into the socket on the board.
The Sunny Backup 2200 can use various data transmission speeds (1200 to 19200 bps) to
communicate with external devices. To allow such communication, the "250.06 ComBaud"
parameter must be set accordingly.
Technical Description
Electrical Connection of the Sunny Backup 2200
RS485
A (Data+)
B (Data-)
GND
Interface port RS485
(Piggy-Back)
RJ45 socket
3
6
2
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