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(First) Commissioning
7.1.4 Battery Type
In stand-alone operation, the battery type and the charging voltage must be set. The battery type and
charging voltage are set using the B1, B2, B3 and B4 DIL switches. When performing these settings,
observe all the specifications of the manufacturer.
The possible settings for the charging voltage/cell can be found in the following tables.
Battery type
Typical flooded battery
Type 2 flooded battery
Type 3 flooded battery
Type 4 flooded battery
Typical sealed battery
Type 2 sealed battery
Type 3 sealed battery
Type 4 sealed battery
7.2 Commissioning
Check the following requirements before commissioning:
• Fuses designed correctly
• All DC cables completely connected (PV strings and batteries)
• Battery temperature sensor connected (only in stand-alone operation or when operated with a
Sunny Island 3324/4248)
• DIL switches configured
Commissioning Procedure
1. Check the polarity of the battery and the PV array.
2. Close the charge controller. Fasten the lid to the enclosure using four screws.
3. Connect the cables leading from the charge controller to the battery to the battery.
4. Switch on the miniature circuit breaker and the disconnection unit.
5. The LED changes its color from red to green. The green LED indicates that the device is
operating. This means that the commissioning procedure was successful. If the PV voltage drops
and falls below the battery voltage, the LED will change from green to orange. If the PV voltage
exceeds the battery voltage, the device will restart and the LED will change from orange to
green.
36
SIC50-IA-en-11
Charging process
Boost
Continuo
us
2.392 V
2.35 V
2.392 V
2.35 V
2.375 V
2.35 V
2.358 V
2.33 V
2.4 V
2.375 V
2.4 V
2.35 V
2.467 V
2.35 V
2.583 V
2.35 V
Float
B1
B2
2.3 V
OFF
OFF
2.267 V
OFF
OFF
2.283 V
OFF
ON
2.25 V
OFF
ON
2.33 V
ON
OFF
2.3 V
ON
OFF
2.3 V
ON
ON
2.3 V
OFF
OFF
SMA Solar Technology AG
Switch
B3
B4
OFF
OFF
ON
OFF
OFF
OFF
ON
OFF
OFF
OFF
ON
OFF
ON
OFF
OFF
ON
Installation Guide
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