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5 Electrical Connection
5.7.4 Connecting the Data Cable in the Sunny Central
On all Sunny Central inverters the connection of the data cable from the Sunny String-Monitor is done
at the hub. Exception: in the case of the CP series Sunny Central, the Sunny String-Monitor is
connected to its own terminal strip. You will find detailed information in the installation manual of the
CP series Sunny Central.
Data-
Data+
GND
GND
+55V
+55V
Figure 10: Connection of the data cables between the Sunny Central and the Sunny String-Monitor
1. Insert the data cable into the Sunny Central The Sunny Central installation manual contains
instructions for the cable insertion.
2. Strip 8 mm off each insulated conductor in the data cable.
3. Remove the sticker on the connection area of the hub.
4. Connect the insulated conductors of the data cable to the connection terminals on the hub in
accordance with the Sunny Central circuit diagram. Observe the terminal allocation of the data
cable.
30
SSM-TEN103132
U1-A6
+55V
Power
SSM
SCC
String Monitor
Power Supply Unit / Hub
RS485
IN
55V
Power
FUSE
RS485
OUT
L
L
N
Data-
N
AC
Data+
NC
PE
GND
PE
GND
+55V
+55V
SSM
SCC
RS485
IN
RS485
OUT
1 2 3 4 5 6
L+
L-
L+
L-
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
1 2 3 4 5 6
SMA Solar Technology AG
Technical Description
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