SMA SI 3.0-11 Quick Reference Guide V.3.0 - Manual (Page 37)

SMA Solar Technology AG 5 Battery Backup Systems Without All-Pole Disconnection
Installation - Quick Reference Guide Ersatzstrom-IS-en-30 37
F Control cable of the tie switch Sunny Island: connection Relay1 terminals C and NC
Automatic transfer switch: connection X4 terminals 1 and 2
If the multifunction relay activates, the contactor of the tie switch
deactivates. Conductor cross-section: 1.5 mm² to 2.5 mm²
G Measuring cable for monitoring the tie
switch
Sunny Island: connections DigIn+ and BatVtgOut+
Automatic transfer switch: connection X5 terminals 3 and 4
Inside the Sunny Island inverter, connect connections DigIn −
and BatVtgOut − .
Conductor cross-section: 0.2 mm² to 2.5 mm²
I Data cable to Sunny Remote Control Sunny Island: Display connection
K Speedwire network cable Sunny Island: ComETH connection
In order to connect the router/network switch, the Speedwire
data module Sunny Island must be mounted in the Sunny Island
(see Sunny Island Speedwire data module installation manual).
The ComETH connection is on the data module.
L Data cable for battery management Sunny Island: ComSync In connection
You only have to connect a data cable to the battery if
lithium-ion batteries are used. The communication bus must be
equipped with a terminator on both ends.
If no data cable is plugged in, plug the terminator into
ComSync In.
M Data cable for the internal
communication in the cluster
Sunny Island: ComSync Out connection
Position Designation Description/information