SMA SUNNY ISLAND 3.0M Installation Manual page 74

8 Commissioning
Range Explanation of the range and parameters
BuRes Range for battery-backup function
Minimum width of the battery-backup range /
262.03 BUResSOC
BatRes Range for protection against deep discharge
This range can only be reached when the utility grid
fails.
Minimum width of the deep-discharge
protection range / 262.02 BatResSOC
ProtRes Range for protection in the event of deep discharge
This range can only be reached when the utility grid
fails.
Lower limit of the deep-discharge protection
range before disconnection /
262.01 ProtResSOC
The following ranges result from the parameter default values:
Range
BuRes
BatRes
ProtRes
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.
You can change the battery usage through battery-backup systems without increased self-consumption on the
communication product or Sunny Remote Control.
Procedure:
1. Log in to the communication product as Installer (see the user manual of the communication product) or switch to
expert mode on the Sunny Remote Control (see the Sunny Island operating manual).
2. Set the following parameters for increased self-consumption:
Parameter
Increased self-consumption switched on / 261.01 SlfCsmpIncEna Disable
Lower limit of the deep-discharge protection range before
disconnection / 262.01 ProtResSOC
Minimum width of the deep-discharge protection range /
262.02 BatResSOC
74 SI30M-44M-60H-80H-IA-en-32
Lead-acid battery
15% to 100%
10% to 15%
0% to 10%
SMA Solar Technology AG
Behavior of the Sunny Island inverter
The Sunny Island uses this range for supplying the
battery-backup grid when the utility grid fails. When
the utility grid is available again, the battery is
charged by the Sunny Island with nominal power
from the utility grid.
The Sunny Island switches into standby mode. The
Sunny Island starts up every two hours and attempts
to charge the battery with PV energy. If the battery
cannot be charged, the Sunny Island switches back
to standby mode.
When the utility grid is available again, the battery
is charged by the Sunny Island with nominal power
from the utility grid.
When this range is reached, the Sunny Island
switches off in order to protect the battery. When
the utility grid is available again, the system must be
charged manually ("Charging the Battery after
Auto Power Off", see Sunny Island operating
manual).
Lithium-ion battery
13% to 100%
3% to 13%
0% to 3%
Value
–
–
Installation manual