7 Commissioning
SMA Solar Technology AG
Operating manual
SI44M-80H-13-BE-en-15
72
To prevent personal injury or property damage and to ensure long-term operation of the batteries, read this section
carefully and observe all safety information at all times.
NOTICE
Damage to the battery due to incorrect settings
The set battery parameters influence the charging behavior of the inverter. The battery can be damaged by
incorrect settings of the battery type, nominal voltage and capacity parameters.
• Set the correct battery type as well as the correct values for nominal voltage and battery capacity when
configuring.
• Ensure that the values recommended by the manufacturer are set for the battery (refer to the technical data of
the battery in the manufacturer documentation).
7.6.2
Lead-acid batteries: Adjust the battery management to the battery
You will find further information on battery management and the charging processes of the Sunny Island for lead-acid
batteries in the technical information "Battery Management" at www.SMA-Solar.com.
The basic procedure for changing operating parameters is explained in another section (see Section 8.6, page 113).
Procedure:
1. Select
Battery > Charge
.
2. Set the parameter
Maximum charging current
to the maximum battery charging current recommended by the
battery manufacturer.
3. Set the parameters for boost charge. First set the parameter
Battery boost charge time
to the boost charge
absorption time recommended by the battery manufacturer.
4. Set the parameter
Cell charge nominal voltage for boost charge
to the cell voltage setpoint recommended
by the battery manufacturer for boost charge.
☑ The parameters for boost charge are set.
5. Set the parameters for full charge. First set the parameter
Battery full charge time
to the full charge absorption
time recommended by the battery manufacturer.
6. Set the parameter
Cycle time full charge
to the full charge cycle time recommended by the battery
manufacturer.
7. Set the parameter
Cell charge nominal voltage for full charge
to the cell voltage setpoint recommended by
the battery manufacturer for full charge.
☑ The parameters for full charge are set.
8. Set the parameters for equalization charge. First set the parameter
Battery equalization charge time
to the
equalization charge absorption time recommended by the battery manufacturer.
9. Set the parameter
Cycle time equalization charge
to the equalization charge cycle time recommended by the
battery manufacturer.
10. Set the parameter
Cell charge nominal voltage for equalization charge
to the cell voltage setpoint
recommended by the battery manufacturer for equalization charge.
☑ The parameters for equalization charge are set.
7.6.3
Lithium-ion batteries only: Setting equalization charge of the batteries
Equalization charge of batteries is applicable in systems in stand-alone and parallel grid-operation mode. A regular
equalization charge is always useful if a full charge of the battery up to a SOC of 100% is never or only rarely
achieved during normal operation. This applies to the following battery-storage systems:
