SMA Solar Technology AG Electrical Connection
Technical Description SI5048-TB-TEN110340 51
For connection, proceed as follows:
1. Remove the right plug of the two plugs in the rubber connection area.
2. Feed the cable from the outside through the cable conduit (D) into the Sunny Island.
3. Plug the cable into the "ComSmaIn" socket.
4. Place the plug around the cable.
5. Insert the plug in its designated opening in the rubber connection area.
6. Lay the cable in area (C).
7. Connect the cable. Assignment pins in the RJ45 socket:
8. The RS485 data bus of the Sunny Island is terminated with a terminating resistor.
This terminating resistor is already plugged into the "ComSmaOut" socket. Only remove the plug
if you want to connect another communication device.
9. Plug the communication interface onto the board (A).
NOTICE!
Electrostatic discharges can damage the communication interface.
Internal components of the Sunny Island can be irreparably damaged by static discharge.
• Ground yourself before touching a component.
PV inverter / wind
power inverter /
Sunny WebBox
RS485 - signal
assignment
RJ45 socket - Sunny
Island
RJ45 color coding
2 A (Data+) 3 White and green
5GND2Orange
7 B (Data–) 6 Green
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