SMA SC 200 Installation - Manual (Page 43)

SMA Solar Technology AG Internal Electrical Connections
Installation Guide SC20_25_35-IEN094521 43
5.5 Connecting the Sunny Central Control to the Power Unit
The data lines connect the Sunny Central Control to the controller board at the power unit. The data
line is fitted with a 4-pin plug-in contact.
The following diagram shows the plug-in contact on the controller board of the Sunny Central 250 as
an example.
1. Connect the data line of the Sunny Central Control to the controller board at the power unit.
☑ The data line is connected.
A Controller board plug-in contact
Laying data lines
In order to guarantee interference-free signal transfer on the data line, it may not be laid
parallel to the power cables or in the cable duct. Instead, lay the data line freely in the
switch cabinet.