SMA SI 3.0-11 Installation - Manual (Page 75)

SMA Solar Technology AG 8 Commissioning
Installation Manual SI30M-44M-60H-80H-IA-en-30 75
Procedure:
1. Switch to expert mode on the Sunny Remote Control (see the Sunny Island inverter operating manual).
2. Set the following parameters for increased self-consumption:
✖ A parameter cannot be adjusted?
All ranges combined result in a value greater than 100%.
• Ensure that all ranges have been set correctly.
8.2.5 Changing the Battery Protection Mode in Off-Grid Systems
Function of the battery protection mode:
Battery protection mode protects the battery.
If the state of charge of the battery falls below a defined threshold, battery protection mode is activated. In battery
protection mode, the Sunny Island switches to standby mode or switches itself off. The battery protection mode has three
levels. One SOC threshold can be set for each level. Levels 1 and 2 of the battery protection mode have specific start
and end times and are therefore dependent on the time of day (see Section 9.3 "Setting Time-Dependent Functions",
page 92).
• Level 1
If the SOC drops below the threshold for level 1, the Sunny Island switches to standby between the start time and
end time. This way you can specify preferred times for the Sunny Island to be switched off if an energy deficit occurs.
• Level 2
If the SOC drops below the threshold for level 2, the Sunny Island switches to standby. Use the start time and end
time to define the time window in which no energy is anticipated from AC sources. Outside this time window, the
Sunny Island starts up every two hours to charge the battery. If no energy is available to charge the battery, the
Sunny Island remains on standby.
This means that, for example, in stand-alone grids with PV inverters, you can specify that the Sunny Island does not
start up at night, preventing it from consuming energy from the battery.
Parameter Value
261.01 SlfCsmpIncEna Enable
262.01 ProtResSOC Range for protection during deep discharge as a percentage of the battery
capacity
262.02 BatResSOC Range for protection against deep discharge as a percentage of the battery
capacity
262.03 BUResSOC Range for the battery backup system function on the longest day of the year as a
percentage of the battery capacity
The range remains consistent year-round when seasonal adjustment is deactivated.
262.04 PVResSOC Range for maintaining the state of charge as a percentage of the nominal capacity
262.05 MinSlfCsmpSOC Range for increased self-consumption on the shortest day of the year as a
percentage of the battery capacity
When seasonal adjustment is deactivated, this value is used year-round for
increased self-consumption.
261.02 SlfCsmpPosSel North for northern hemisphere or South for southern hemisphere
261.03 Saisonenable No for no seasonal adjustment or Yes for seasonal adjustment
Battery protection mode for lithium-ion batteries cannot be changed
You can only change the battery protection mode if you are using lead-acid batteries. When using lithium-ion
batteries, the battery protection mode cannot be changed.