SMA SUNNY ISLAND 6.0H - Information Page in Off-Grid Systems

4 Circuitry of Multicluster Systems
SMA Solar Technology AG
System DescriptionSI44M-80H-13-MC-IA-en-1022
Position Designation Description / information
F Measuring cable of the battery
temperature sensor
SunnyIsland: connection BatTmp
You only have to connect a battery temperature sensor if lead-acid
batteries are used.
Mount the battery temperature sensor in the middle of the battery-
storage system, in the upper third of the battery cell.
Use the ferrite included in the delivery.
G Control cable to the Multicluster-
Box
The control cable must be connected if a Grid-Connect-Box is in-
stalled.
SunnyIsland: connection Relay1 terminals C and NC
Multicluster-Box: connection X112 terminals 1 and 2
Conductor cross-section: from 1.5mm
2
to 2.5mm
2
H Control cable to the Multicluster-
Box
SunnyIsland: connection Relay2 terminals C and NO
Multicluster-Box: connection X113 terminals 1 and 2
Conductor cross-section: from 1.5mm
2
to 2.5mm
2
I Control cable to the Multicluster-
Box
SunnyIsland: connections DigIn+ und BatVtgOut+
Multicluster-Box: connection X113 terminals 3 and 4
Inside the SunnyIsland, connect terminals DigIn- and BatVtgOut-.
Conductor cross-section: from 1.5mm
2
to 2.5mm
2
The complete DC voltage range is mapped at the terminal BatVt-
gOut. The connection BatVtgOut is current-limited and protected
against short circuits. Use the supplied ferrite for BatVtgOut.
J Speedwire network cable
Terminal ComETH
K Data cable for the communica-
tion with the masters of the exten-
sioncluster
At SI-SYSCAN.BGx terminalSysCanIn
Master of the extensioncluster: at SI-SYSCAN.BGx
Terminal SysCanOut
The communication bus must be equipped with a terminator on both
ends.
L Terminator
At SI-SYSCAN.BGx terminalSysCanOut
The communication bus must be equipped with a terminator on both
ends.
M Data cable for communication
within the cluster
SunnyIsland: terminal ComSyncOut
The communication bus connects the master with the slaves in each
cluster and additionally with the Multicluster-Box in the maincluster.
The communication bus must be equipped with a terminator on both
ends.
N Data cable for communication
within the cluster
SunnyIsland: terminal ComSyncIn
Multicluster-Box: terminal ComSyncOut
The communication bus must be equipped with a terminator on both
ends.