SMA SI 3.0-11 Installation - Manual (Page 70)

8 Commissioning SMA Solar Technology AG
70 SI30M-44M-60H-80H-IA-en-30 Installation Manual
The discharge behavior can be adjusted to the location and time by the Sunny Island. You can activate the seasonal
adjustment for this (261.03 Saisonenable). The Sunny Island only uses a small portion of battery capacity for increased
self-consumption on short days when adjustment is activated. The Sunny Island uses a large portion of the battery
capacity for the increased self-consumption on long days. The seasonal adjustment prolongs the electrical endurance of
the battery in regions where the available PV energy is largely dependent on the season.
8.2.4.2 Changing the Battery Usage Through Systems for Increased
Self-Consumption Without a Battery Backup Grid
In systems for increased self-consumption, one range can be adjusted seasonally:
• Increased self-consumption range (SlfCsmp)
You determine the percentage of the battery capacity that is to be used for increased self-consumption on the shortest
day of the year.
The longer the days become, the more the SlfCsmp range increases automatically and the range for protection against
deep discharge (BatRes) decreases. The range for increased self-consumption reaches its maximum on the longest day:
SlfCsmp
max
= 100% − 262.04 PVResSOC − 262.02 BatResSOC − 262.01 ProtResSOC
This results in the seasonal pattern of the ranges.
Figure 21: State of charge ranges of the battery according to the time of year (example)
Adjusting the default values
The parameters for battery usage are set automatically to reasonable values during basic configuration for the
respective system. The parameter values can be adjusted if there are special requirements for the system or the
battery.