SMA SUNNY ISLAND 4.4M Operating Manual page 87

SMA Solar Technology AG
The following ranges result from deactivating seasonal adjustment with the default values of the parameters:
Range Lead-acid battery
SlfCsmp 65% to 100%
PVRes 60% to 65%
BURes 10% to 60%
BatRes 10% to 15%
ProtRes 0% to 10%
Procedure for multicluster systems with battery-backup grid
With the Multicluster-Box 12 (MC-Box-12.3-20) and the NA-Box or Grid-Connect-Box, multicluster systems with
battery-backup grid can be installed (see Multicluster-Box and NA-Box / Grid-Connect-Box documentation).
• In a multicluster system with battery-backup grid, set the ranges of battery state of charge for each cluster to
the same values.
The basic procedure for changing operating parameters is explained in another section (see Section 9.2 "Changing
Operating Parameters", page 119).
Procedure:
1. Select Device > Device > Self-consumption.
2. Set the parameter Rise in self-consumption switched on to Yes.
3. Select Battery > Areas of application >.
4. Set the following parameters for the battery usage:
Parameter
Lower lmt deep disch. protect area prior shut-
down
Minimum width of deep discharge protection
area
Minimum width of backup power area
Area width for conserving battery state of
charge
Minimum width of own consumption area
Operating Manual
Lithium-ion battery
30% to 100%
25% to 30%
13% to 25%
3% to 13%
0% to 3%
Value
Range for protection against deep discharge as a per-
centage of the battery capacity
Range for the battery backup system function on the
longest day of the year as a percentage of the battery
capacity
The range remains constant year-round when seasonal
adjustment is deactivated.
Range for maintaining the state of charge of the bat-
tery as a percentage of the battery capacity
Range for increasing self-consumption on the shortest
day of the year as a percentage of the battery capac-
ity
When seasonal adjustment is deactivated, this value is
used year-round for increased self-consumption.
SI44M-80H-12-BE-en-10
7 Commissioning
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