SMA Solar Technology AG
6 Electrical Connection
Installation Manual
STP5-9TL-IA-en-10
47
Using the Multi-Function Relay as Fault Signalling Contact
You can make use of the multi-function relay as a fault signalling contact and have an error of the
inverter either displayed or reported. Alternatively, you can choose to have uninterrupted operation
displayed or reported. It is possible to connect several inverters to one fault or operation indicator. To
enable this function, the multi-function relays of several inverters must be switched in parallel.
Figure 13: Wiring diagram for connection of operation indicator and fault indicator