5 connecting the multifunction relay, 1 connection options for the multifunction relay, Connecting the multifunction relay – SMA STP 5000TL User Manual
Page 31: Connection options for the multifunction relay
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6.5 Connecting the Multifunction Relay
6.5.1 Connection Options for the Multifunction Relay
You can choose between three connection options:
• Using the multifunction relay as a fault indicator contact or operation signaling contact
• Controlling loads or charging batteries via the multifunction relay
• Reporting the switching status of the grid relay
Using the Multifunction Relay as a Fault Indicator Contact
You can make use of the multifunction relay as a fault indicator contact and have an error of the
inverter either displayed or reported. Alternatively, you can choose to have fault-free operation
displayed or reported. It is possible to connect several inverters to one fault indicator or operation
indicator. To enable this function, the multifunction relays of multiple inverters must be
interconnected.
Error message required by standard
In some countries, signaling of errors is required by standards, e.g. IEC 62109-2.
• In order to meet the requirements of IEC 62109-2, a display device signaling an error
must be connected to the multifunction relay or the inverter must be registered in
Sunny Portal where the fault alert must be activated (for information on fault alert via
6 Electrical Connection
SMA Solar Technology AG
Operating Manual
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STP5-10TL-20-BE-en-13