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SMA Solar Technology AG
6.5.2
Changing the Operating Mode of the Multifunction Relay
Changing the operating mode with two existing multifunction relays
For inverters with an internal multifunction relay on the communication module and an additional multifunction
relay on an SMA I/O module, the operating mode can be changed separately for each multifunction relay. The
parameters of the internal multifunction relay are marked with [A] on the inverter user interface. The parameters of
the multifunction relay on the SMA I/O module are marked with [B].
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 and the associated
connection variant, you will have to change the operating mode of the multifunction relay and make other settings, if
necessary.
Procedure:
1. Activate the user interface of the inverter (see the inverter manual).
2. Log in as Installer or User.
3. Call up the menu Device Parameters.
4. Select [Edit parameters].
5. In the parameter group Device > Multifunction relay > Operating mode select the parameter Operating
mode of multifunction relay or Mlt.OpMode and set the desired operating mode.
6. Once you have set the operating mode Self-consumption or SelfCsmp, you can configure other settings:
• In the parameter group Device > Multifunction relay > Self-consumption > Minimum On power select
the parameter Minimum On power for MFR self-consumption or Mlt.MinOnPwr and set the desired
value. This will configure the power threshold from which a load is to be activated.
• In the parameter group Device > Multifunction relay > Self-consumption > Minimum power On time
select the parameter Minimum power On time, MFR self-consumption or Mlt.MinOnPwrTmm and set
the desired value. This will configure the minimum time for which the power must have exceeded the minimum
switch-on power threshold in order to trip activation of the load.
• In the parameter group Device > Multifunction relay > Self-consumption > Minimum On power select
the parameter Minimum On time for MFR self-consumption or Mlt.MinOnTmm and set the desired
value. This will configure the minimum time for which the load remains activated.
7. If you have set the operating mode Control via communication or ComCtl, in the parameter group Device >
Multifunction relay > Control via communication > Status select the parameter Status of MFR with
control via communication or Mlt.ComCtl.Sw and set the desired value. This determines whether the
multifunction relay can be controlled via a communication product.
8. If you have set the operating mode Battery bank or BatCha, make further settings:
• In the parameter group Device > Multifunction relay > Battery bank > Minimum On power select the
parameter Minimum On power for MFR battery bank or Mlt.BatCha.Pwr and set the desired value.
This will configure the power threshold from which the battery is to be charged.
• In the parameter group Device > Multifunction relay > Battery bank > Minimum time before
reconnection select the parameter Minimum time before reconnection of MFR battery bank or
Mlt.BatCha.Tmm and set the desired value. This will configure the minimum time which must elapse after
charging the battery before the battery can be charged again.
9. Select [Save all] to save the changes.
Installation manual
6 Connection
MD-IO-40-IA-en-11
17
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