SMA MULTIFUNCTION RELAY User Manual
Page 24
5 Changing the Operating Mode of the Multifunction Relay
SMA Solar Technology AG
24
MFR-NR-IA-en-21
Installation Manual
5 Changing the Operating Mode of the
Multifunction Relay
The default operating mode of the multifunction relay is Fault indication (FltInd). If you decide to
use another operating mode and have established the correct electrical connection for this operating
mode, you will have to change the operating mode of the multifunction relay and make other settings,
if necessary (see the communication product manual for more information on changing parameters).
Requirement:
☐ The inverter must be connected to a communication product via BLUETOOTH or Speedwire/
Webconnect.
Procedure:
1. Call up the user interface of the communication product or Sunny Explorer and log in as
Installer.
2. Select the parameter Operating mode of multifunction relay/Mlt.OpMode and set the
desired operating mode.
3. Once you have set the operating mode Self-consumption, make the following additional
settings:
• Select the parameter Minimum On power for MFR self-consumption/Mlt.MinOnPwr
and set the desired value. This determines the power threshold at which a load is switched
on.
• Select the parameter Minimum power On time, MFR self-consumption/
Mlt.MinOnPwrTmm and set the desired value. This determines the minimum time for
which the power must exceed the minimum switch-on power threshold before the load is
switched on.
• Select the parameter Minimum On time for MFR self-consumption/Mlt.MinOnTmm
and set the desired value. This determines the minimum time for which the load remains
switched on.
4. If you have set the operating mode Control via communication, select the parameter Status
of MFR with control via communication/MltComCtl.Sw and set the desired value. This
determines the status used when the multifunction relay is controlled via a communication
product.
5. If you have set the operating mode Battery bank, make the following additional settings:
• Select the parameter Minimum On power for MFR battery bank/Blt.BatCha.Pwr
and set the desired value. This determines the power threshold at which the battery is
supposed to be charged.
• Select the parameter Minimum time before reconnection of MFR battery bank/
Blt.BatCha.Tmm and set the desired value. This sets the minimum time which must elapse
after charging the battery before battery charging can resume.