beautypg.com

3 connecting the fault indication relay – SMA PVO-N-20 User Manual

Page 30

background image

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.