4 Electrical Connection
SMA Solar Technology AG
20
MFR-NR-IA-en-23
Installation Manual
4.6 Connecting the Multifunction Relay
4.6.1 Connection Options for the Multifunction Relay
There is a different connection procedure depending on which operating mode you select.
Operating mode of
multifunction relay
(Mlt.OpMod)
Connection option
Fault indication (FltInd)
Using the multifunction relay as fault indicator contact
Self-consumption
(SelfCsmp)
Controlling loads or charging batteries in a power-dependent
way via the multifunction relay
Control via communication
(ComCtl)
Controlling loads or charging batteries in a power-dependent
way via the multifunction relay
Battery bank (BatCha)
Controlling loads or charging batteries in a power-dependent
way via the multifunction relay
Fan control (FanCtl)
Connecting the external fan (see fan documentation)
Switching status grid relay
(GriSwCpy)
Reporting the switching status of the grid relay