SMA STP 5000TL - Manual (Page 34)

Reporting the Switching Status of the Grid Relay
The multifunction relay can trip a signal to the grid operator as soon as the inverter connects to the
utility grid. To enable this function, the multifunction relays of all inverters must be connected in
parallel.
Figure 10: Circuit diagram for reporting the switching status of the grid relay (example)
6 Electrical Connection SMA Solar Technology AG
Operating Manual STP5-10TL-20-BE-en-13 34