Operating Modes Of The Multifunction Relay; Connection Options - SMA SUNNY BOY 3.0-US Instructions D'installation

SMA Solar Technology America LLC
6.5.2

Operating Modes of the Multifunction Relay

Operating mode of multi-
function relay
(Mlt.OpMode)
Fault indication (FltInd)
Self-consumption
(SelfCsmp)
Control via communica-
tion (ComCtl)
Battery bank (BatCha)
Fan control (FanCtl)
Switching status grid re-
lay (GriSwCpy)
6.5.3

Connection Options

The connection procedures vary, depending on the operating mode.
Operating mode
Fault indication (FltInd)
Self-consumption
(SelfCsmp)
Control via communica-
tion (ComCtl)
Battery bank (BatCha)
Fan control (FanCtl)
Switching status grid re-
lay (GriSwCpy)
Installation Manual
Description
The multifunction relay controls a display device (e.g. a warning
light) which, depending on the type of connection, signals either an
error or the undisturbed operation of the inverter.
The multifunction relay switches loads on or off, depending on the
power production of the PV system.
The multifunction relay switches loads on or off according to com-
mands transmitted by a communication product.
The multifunction relay controls the charging of the batteries depend-
ing on the power production of the PV system.
The multifunction relay controls an external fan, depending on the
temperature of the inverter.
The local grid operator may require that a signal is transmitted as
soon as the inverter connects to the utility grid. The multifunction re-
lay can be used to trigger this signal.
Connection option
Using the Multifunction Relay as a Fault Indicator Contact
Controlling loads via the multifunction relay or charging batteries de-
pending on the power production of the PV system
Controlling loads via the multifunction relay or charging batteries de-
pending on the power production of the PV system
Controlling loads via the multifunction relay or charging batteries de-
pending on the power production of the PV system
Connecting the external fan (see fan documentation)
Reporting the switching status of the grid relay
6 Electrical Connection
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