SMA SUNNY ISLAND 8.0H Installation Manual page 99

SMA Solar Technology AG
• Level 2
If the battery falls below the SOC limiting value for level 2, the off-grid inverter switches to
standby. The off-grid inverter tries to charge the battery during the day, when the PV inverters
can supply energy.
Using the start and end times, you set the time period during which the off-grid inverter starts to
charge the battery every two hours. If there is no energy available to charge the battery,
the off-grid inverter remains in standby.
• Level 3
If the battery falls below the SOC limiting value for level 3, the off-grid inverter automatically
switches off. This protects the battery against deep discharge and complete damage. To charge
the battery again, the off-grid inverter must be manually switched on and started.
For all three levels, the off-grid inverter only switches to standby or switches off if no charging current
flows into the battery within a period of 6 minutes.
Recharging the battery with an external energy source:
In levels 1 and 2 of battery protection mode, you can charge the battery at any time with an external
energy source. If a voltage is present at the AC2 terminal, the off-grid inverter exits standby mode.
If the off-grid inverter has switched itself off in level 3 of battery protection mode, you must charge the
battery in emergency charge mode (see off-grid inverter operating manual).
Time settings:
The start time and the end time can be set for battery protection mode levels 1 and 2.
If the battery falls below the SOC limiting value for level 1, the off-grid inverter switches to standby
between the start time and end time.
If the battery falls below the SOC limit for level 2, the off-grid inverter attempts to charge the battery
between the end time and the start time of the battery. For the remaining time, the off-grid inverter stays
on standby.
Requirement:
☐ In a cluster, the Sunny Remote Control must be connected to the master.
1. Switch to expert mode (see Section 7.6).
2. To change battery protection mode 1, set the desired times and SOC limiting values:
• Select the 223.01 BatPro1TmStr parameter and set it to the desired start time.
• Select the 223.02 BatPro1TmStp parameter and set it to the desired end time.
• Select the 223.05 BatPro1Soc parameter and set it to the desired SOC limiting value.
3. To change battery protection mode 2, set the desired times and SOC limiting values:
• Select the 223.03 BatPro2TmStr parameter and set it to the desired start time.
• Select the 223.04 BatPro2TmStp parameter and set it to the desired end time.
• Select the 223.06 BatPro2Soc parameter and set it to the desired SOC limiting value.
4. To change battery protection mode 3, select the 223.07 BatPro3Soc parameter and set it to
the desired SOC limiting value.
Installation Manual SI80H-60H-OffGrid-IA-en-11
7 Commissioning
99