SMA SUNNY ISLAND 3.0M Installation Manual page 82

8 Commissioning
• 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.
• Level 3
If the state of charge falls below the threshold for level 3, the Sunny Island switches itself off. This protects the battery
against deep discharge and severe damage. To charge the battery again, the Sunny Island must be switched on
and started manually.
At all three levels, the Sunny Island will only switch to standby mode or switch itself off if no charging current has flowed
in the battery for at least five 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 on connection AC2, the Sunny Island exits standby mode.
If the Sunny Island has switched to level 3 of battery protection mode by itself, you must charge the battery in emergency
charge mode (see the Sunny Island inverter operating manual).
Time settings:
The start time and the end time can be configured for battery protection mode levels 1 and 2.
If the state of charge falls below the threshold for level 1, the Sunny Island switches to standby between the start time and
end time.
If the state of charge falls below the threshold for level 2, the Sunny Island switches to standby between the start time and
end time. The Sunny Island attempts to charge the battery in the remaining time.
You can change the battery protection mode on the communication product or on the Sunny Remote Control. The
parameters for the battery protection mode are created as a data field in the communication product. Data fields enable
the summary of parameters. Therefore, the parameters in the Sunny Explorer are shown in a table.
Requirement:
☐ In a cluster, the communication product or Sunny Remote Control must be connected to the master.
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. To change battery protection mode 1, set the desired times and SOC thresholds:
• Select the parameter Start time battery protection mode / 223.01 BatPro1TmStr and set to the desired
start time for level 1.
• Select the parameter End time battery protection mode / 223.02 BatPro1TmStp and set to the desired end
time for level 1.
• Select the parameter Battery state of charge for protection mode / 223.05 BatPro1Soc and set to the
desired SOC threshold for level 1.
3. To change battery protection mode 2, set the desired times and SOC thresholds:
• Select the parameter Start time battery protection mode / 223.03 BatPro2TmStr and set to the desired
start time for level 2.
• Select the parameter End time battery protection mode / 223.04 BatPro2TmStp and set to the desired end
time for level 2.
• Select the parameter Battery state of charge for protection mode / 223.06 BatPro2Soc and set to the
desired SOC threshold for level 2.
4. To change battery protection mode 3, select the parameter 223.07 BatPro3Soc and set to the desired SOC
threshold.
82 SI30M-44M-60H-80H-IA-en-32
SMA Solar Technology AG
Installation manual