SMA PVO-N-20 - Manual (Page 30)

7 Electrical Connection SMA Solar Technology AG
30 PVO-BOX-IA-en-10 Installation Manual
7.2.3 Connecting the Fault Indication Relay
If a fault indication relay is required, connect it as follows (see Connection Principle, P. 26):
13. Plug the supplied 3-pole plug into the left-hand
socket in the SMA PV Offset Box.
14. If you wish to receive an operation signal, connect
the wires to terminals 1 and 2 of the plug.
15. If you wish to receive a fault signal, connect the
wires to terminals 2 and 3 of the plug.
17. Connect the fault indication relay either to an external voltage source or connect to L and N.
The maximum supply voltage for the fault indicator is 240 V AC or 30 V DC. The maximum
switching current is 1 A.
16.
Danger to life due to electric shock
If the cables slip out of the terminal due to excessive tension, the enclosure will carry live
voltage.
• Attach the supplied cable tie to relieve the
tension.