SMA SUNNY ISLAND 8.0H - Cleaning and Maintenance; Cleaning the Enclosure of the Off-Grid Inverter; Cleaning the Sunny Remote Control; Performing a Manual Equalisation Charge

6 Electrical Connection SMA Solar Technology AG
48 SI80H-60H-OffGrid-IA-en-11 Installation Manual
6.15.6 Connecting Control and Measuring Cables for
Multicluster Box
For a multicluster system, the Multicluster Box communicates control and measuring data with the
three off-grid inverters via three red RJ45 data cables. The red RJ45 data cables are part of the scope
of delivery of the Multicluster Box.
Requirement:
☐ The cable feed-through plate must be removed (see Section 6.15.1).
• Lead the red RJ45 data cable from the Multicluster Box through the enclosure opening of the
cable feed-through plate and plug it into the Backup VtgCur socket.
6.15.7 Connecting the Cable for Multicluster Communication
In a multicluster system, the masters of the various clusters communicate with each other.
An SI-SYSCAN.BGx communication interface must be installed in every master for Multicluster
communication. This communication is not necessary for a multicluster system with one cluster.
If the off-grid inverter was ordered with the "Communication for Multicluster system" order option,
SI-SYSCAN.BGx is installed on every master.
Figure14: Design of SI-SYSCAN.BGx
Position Description
AMounting hole
B Type label
C SysCanOut socket
D SysCanIn socket