SMA Sunny Island 2012 - Page 82

(First) Commissioning SMA Solar Technology AG
82 SI2012_2224-TEN082311 Technical Description
8. Subsequently, check the offset error
"120.06 TotBatCur" should be (close to) zero
9. Switch off the Sunny Island and remove all voltages (see chapter 10.1 "Switching On and
Off" (Page 83)).
10. Connect the "BatCur+" wire to the battery current sensor's terminal clamp 2 again.
Make sure the wires have the correct polarity.
- BatCur+ to terminal clamp 1
- BatCur- to terminal clamp 2
11. Start the Sunny Island (see chapter 10.1.1 "Switching On/Starting" (Page 83)).
12. Check the current direction: "120.06 TotBatCur"
Current direction
Battery discharge:
• no generator/grid connected
• Loads are being supplied
The value of the battery current is positive
Charging the battery
• Generator/grid connected
• Loads not being/being marginally supplied
• Battery is being charged
The value of the battery current is positive