Setting The Functions Of The Multi-Function Relays; Setting 1-Level Load Shedding - SMA SUNNY ISLAND 8.0H Installation Manual

SMA Solar Technology AG
7.10.2 Setting the Functions of the Multi-Function Relays
You must configure each cluster individually in a multicluster system.
Requirement:
☐ In a cluster, the Sunny Remote Control must be connected to the master.
1. Switch to installer mode (see Section 7.5).
2. To set Relay 1 of the off-grid inverter/master, select the 241.01 Rly1Op parameter and set it
to the value for the connected function (see Section 7.10.1).
3. To set Relay 2 of the off-grid inverter/master, select the 241.02 Rly2Op parameter and set it
to the value for the connected function (see Section 7.10.1).
4. To set Relay 1 of slave 1, select the 244.01 Rly1OpSlv1 parameter and set it to the value for
the connected function (see Section 7.10.1).
5. To set Relay 2 of slave 1, select the 244.02 Rly2OpSlv1 parameter and set it to the value for
the connected function (see Section 7.10.1).
6. To set Relay 1 of slave 2, select the 245.01 Rly1OpSlv2 parameter and set it to the value for
the connected function (see Section 7.10.1).
7. To set Relay 2 of slave 2, select the 245.02 Rly2OpSlv2 parameter and set it to the value for
the connected function (see Section 7.10.1).
7.10.3 Setting 1-Level Load Shedding
One multi-function relay controls the load-shedding contactor depending on the state of charge of the
battery.
Significance of the SOC limiting values:
When the state of charge of the battery reaches the lower SOC limiting value, the multi-function relay
opens the connected load-shedding contactor. The load-shedding contactor disconnects the loads
from the stand-alone grid. When the state of charge of the battery reaches the upper SOC limiting
value during recharging, the multi-function relay closes the connected load-shedding contactor.
The load-shedding contactor connects the loads to the stand-alone grid.
Requirement:
☐ In a cluster, the Sunny Remote Control must be connected to the master.
1. Switch to installer mode (see Section 7.5).
2. Select the 242.01 Lod1SocTm1Str parameter and set it to the lower SOC limiting value.
3. Select the 242.02 Lod1SocTm1Stp parameter and set it to the upper SOC limiting value. The
upper SOC limiting value must be at least 10 percent greater than the lower SOC limiting value.
4. Set the 242.05 Lod1Tm1Str and 242.06 Lod1Tm2Str parameters to the same value,
e.g. both to 000000. This switches off time-dependent load shedding.
5. If the loads are only to be reconnected when the set SOC limiting value is reached, ensure that
the parameter of the multi-function relay has been set to AutoLod1Soc (see Section 7.10.1).
Installation Manual SI80H-60H-OffGrid-IA-en-11
7 Commissioning
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