SMA SUNNY ISLAND 8.0H - Disconnecting the Off-Grid Inverter from Voltage Sources

SMA Solar Technology AG 6 Electrical Connection
Installation Manual SI80H-60H-OffGrid-IA-en-11 47
6.15.4 Connecting the Communication to the Sunny Island
Charger 50
Up to four Sunny Island Charger 50 devices can be connected to an off-grid inverter/master. If a
Sunny Island Charger 50 is present in the off-grid system, connect the communication as follows.
Requirements:
☐ The total length of the communication bus must not exceed 30 m.
☐ The cable feed-through plate must be removed (see Section 6.15.1).
1. If a terminator is plugged into the ComSyncIn socket on a master, remove the terminator.
2. Lead the RJ45 data cable through the enclosure opening of the cable feed-through plate and
plug it into the ComSyncIn socket.
3. Ensure that a terminator is plugged into the ComSyncOut socket or that other off-grid inverters
are connected.
4. Connect the other end of the RJ45 data cable to a Sunny Island Charger 50
(see Sunny Island Charger 50 installation manual).
6.15.5 Connecting the Communication of the Multicluster Box
For a multicluster system, the Multicluster Box communicates with the master of the main cluster via a
black RJ45 data cable. The black RJ45 data cable is part of the scope of delivery of the Multicluster
Box.
Requirements:
☐ The total length of the communication bus must not exceed 30 m.
☐ The cable feed-through plate must be removed (see Section 6.15.1).
1. Remove the terminator from the ComSyncIn socket on the master of the main cluster.
2. Lead the black RJ45 data cable through the enclosure opening of the cable feed-through plate
and plug it into the ComSyncIn socket.
3. Connect the other end of the black RJ45 data cable to the Multicluster Box (see Multicluster Box
installation manual).