SMA SI 3.0-11 Installation - Manual (Page 34)

7 Electrical Connection SMA Solar Technology AG
34 SI30M-44M-60H-80H-IA-en-30 Installation Manual
Procedure:
1. On the Sunny Island, insert the data cable in the pin connector of
the Speedwire data module (for electrical connection, see the
installation manual of the Speedwire data module Sunny Island).
2. Connect the other end of the data cable to the router or network switch.
7.4.7.4 Connecting the Data Cable for the Internal Communication of the Cluster
In a cluster, the Sunny Island inverters communicate via a black data cable.
Figure 10: Internal communication cabling