SMA SUNNY ISLAND 8.0H - Checking and Maintaining the Battery

6 Electrical Connection SMA Solar Technology AG
50 SI80H-60H-OffGrid-IA-en-11 Installation Manual
Figure16: Design of SI-COMSMA.BGx
Cable requirement:
☐ The data cable must correspond to the CAT5e classification.
Requirement:
☐ The cable feed-through plate must be removed (see Section 6.15.1).
1. If an SI-COMSMA.BGx is not installed in the off-grid inverter, install SI-COMSMA.BGx in the
off-grid inverter (see SI-COMSMA-NR mounting instructions):
• For single systems, install SI-COMSMA.BGx in the off-grid inverter.
• For a single-cluster system, install SI-COMSMA.BGx in the master.
• For a multicluster system, install SI-COMSMA.BGx in every master.
2. Connect the white RJ45 data cable with open wires to the communication device (see
installation manual of the communication device).
3. For a single system, lead the white RJ45 data cable through the enclosure opening of the cable
feed-through plate on the off-grid inverter and plug the cable into the ComSmaIn socket.
Position Description
AMounting hole
B Type label
C ComSmaOut socket
D ComSmaIn socket