SMA SUNNY ISLAND 4.4M Operating Manual page 83

SMA Solar Technology AG
The following ranges result from the parameter default values:
Range Lead-acid battery
Backup power 15% to 100%
range
Deep discharge 10% to 15%
protection range
Deep discharge 0% to 10%
range
Parameters for battery use:
Parameter
Rise in self-consumption switched on
Lower lmt deep disch. protect range prior shut-
down
Minimum width of deep discharge protection
range
Minimum width of backup power range
Season operation active
Procedure for multicluster systems with battery-backup grid
All systems for which VDE-AR-N 4105-11:2018, EN50549-1:2018, C10/11:2019, G98-1:2018, G99-1:2018,
CEI 0-21:2019 type A/type B, TOR generator type A of the European grid connection regulations according to
Regulation (EU) 2016/631 are subject shall not be set up as multicluster systems.
Multicluster systems with battery-backup grid can be set up with the Multicluster-Box 12 (MC-Box-12.3-20) and
the Grid-Connect-Box (see documentation of the Multicluster-Box and Grid-Connect-Box). When doing so, always
perform the following steps:
• In a multicluster system with battery-backup grid and increased self-consumption, set the ranges of battery
state of charge for each cluster to the same values.
• In a multicluster system with battery-backup grid and without increased self-consumption, always set the
Internal consumption increase switched on parameter to No.
If the values for the battery usage ranges are incorrect, no adjustment is possible
If all battery usage ranges combined exceed 100%, the parameters for battery usage cannot be set.
• Ensure that all battery usage ranges combined result in the value 100%.
The basic procedure for changing operating parameters is explained in another section (see Section 8.6, page 113).
Procedure:
1. Select Battery > Ranges of application.
2. Set the parameters for battery use.
Operating manual
Lithium-ion battery
13% to 100%
3% to 13%
0% to 3%
Value
Yes
Range for protection during deep discharge as a percent-
age of the battery capacity
Range for protection against deep discharge as a per-
centage of the battery capacity
Within this range, the system goes into energy-saving
mode and automatically attempts to recharge the battery
from available PV energy.
Range for battery-backup function
If all ranges combined do not amount to 100%, the Bu-
Res range will be increased automatically.
No
7 Commissioning
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