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6 Electrical Connection SMA Solar Technology AG <br />Installation ManualSBxx-1SP-US-41-IA-xx-12 36 <br />Procedure See <br />2. Connect to the multifunction relay according to the operat- <br />ing mode and the associated connection variant. <br />see section 6.4.3, <br />page 36 and see sec- <br />tion 6.4.4, page 40 <br />3. After commissioning the inverter, change the operating <br />mode of the multifunction relay, if necessary. <br />User manual under <br />www.SMA-Solar.com <br />6.4.2 Operating Modes of the Multifunction Relay <br />Operating mode of multi- <br />function relay (Mlt.Op- <br />Mode) <br />Description <br />Fault indication (FltInd)The multifunction relay controls a display device (e.g. a warning <br />light) which, depending on the type of connection, signals either an <br />error or the undisturbed operation of the inverter. <br />Self-consumption (SelfC- <br />smp) <br />The multifunction relay switches loads on or off, depending on the <br />power production of the PV system. <br />Control via communica- <br />tion (ComCtl) <br />The multifunction relay switches loads on or off according to com- <br />mands transmitted by a communication product. <br />Battery bank (BatCha)The multifunction relay controls the charging of the batteries depend- <br />ing on the power production of the PV system. <br />Fan control (FanCtl)The multifunction relay controls an external fan, depending on the <br />temperature of the inverter. <br />Switching status grid re- <br />lay (GriSwCpy) <br />The local grid operator may require that a signal is transmitted as <br />soon as the inverter connects to the utility grid. The multifunction re- <br />lay can be used to trigger this signal. <br />6.4.3 Connection Options <br />The connection procedures vary, depending on the operating mode. <br />Operating mode Connection option <br />Fault indication (FltInd) Using the Multifunction Relay as a Fault Indicator Contact <br />Self-consumption (SelfC- <br />smp) <br />Controlling loads via the multifunction relay or charging batteries de- <br />pending on the power production of the PV system <br />Control via communica- <br />tion (ComCtl) <br />Controlling loads via the multifunction relay or charging batteries de- <br />pending on the power production of the PV system <br />Battery bank (BatCha)Controlling loads via the multifunction relay or charging batteries de- <br />pending on the power production of the PV system <br />EN <br />G <br />L <br />I <br />S <br />H <br />534 S Sycamore St <br />- 10110979707/01/22