SMA SC 100LV-560HE - Manual (Page 72)

Electrical Connection SMA Solar Technology AG
72 SC125_560HE-IEN083220 Installation Guide
5.2.13 Emergency-stop cabling
The Sunny Central is equipped ex-works with an internal emergency-stop switch. If an external
emergency-stop is desired, it can be connected to terminal 2 and 3 of the terminal strips Z3-X3.
Emergency-stop chain
In the case that several Sunny Centrals are in operation in one installation, all of them have to be
switched off when the emergency-stop switch is activated by one inverter (creation of an emergency-
stop chain). For this all Sunny Central emergency-stop switches are connected in series.
5.2.14 Surge protection
Connection of the external emergency-stop cabling
When connecting the external emergency-stop cabling, it is obligatory to follow the circuit
diagram included in the delivery. The connection is made at the connection terminals. For
this, the bridge between terminal 2 and 3 has to be removed.
ATTENTION!
Damage to the Sunny Central through missing emergency-stop function.
In installations with more than one inverter, the emergency shut-off circuits of the existing
devices have to be connected with each other and be tested for correct functionality.
The emergency-stop chain may only be supplied with voltage from a single Sunny Central.
Position of the surge protectors
The exact position of the surge protectors varies according to the Sunny Central. With the
help of the equipment identifier and the provided circuit diagram, the exact position of the
surge protector can be determined.