6 internal control lines of the power unit – SMA SC 100LV-560HE User Manual
Page 40
Electrical Connection
SMA Solar Technology AG
40
SC125_560HE-IEN083220
Installation Guide
5.1.6 Internal control lines of the power unit
The X8 and X9 control lines coming from the AC cabinet are connected to the control board at the
power unit. The control board is also located hanging upside down at the power unit. In the switch
cabinets of the Sunny Centrals 500HE and 560HE, they are located on the top power unit. Both
2-pole green X8 and X9 plug-in contacts have to be fixed to the correspondingly marked sockets.
Connection of the internal control line with Sunny Central 500HE
Connection of the internal control line with Sunny Central 350HE
Position of the connection terminals in the control line
With the help of the equipment identifier and the provided circuit diagram, the exact
position of the connection terminals can be determined.
L-
L+
L-
L+
L-
L+
H1-02
H1-02
L+
L-
L+
L-
L+
L-
L+
L-
L+
L-
M3-810
M3-810
M3-810
L+
L-
L+
L-
H1-02
L-
L+
L-
L+
L+
L-
L-
L-
L+
L-
L+
L-
L-
L1
L2
L3
L1
L2
L3