SUNNY ISLAND 5048 - Technical Description - Wind & Sun Ltd.

Initial Start-up SMA Solar Technology AG
8.3 Commissioning the Battery Current Sensor
In the event you have installed a battery current sensor in your system, you are required to synchronize
the device's internal offset. To do this, proceed as follows:
1. Switch the Sunny Island to standby as described in section 9.2 ”Stopping the Sunny Island
(Standby)” (page 63).
NOTICE!
System error due to wrong parameters being entered.
All parameter settings which could affect the operating safety of the stand-alone system are
protected by the installer password.
• Only electrically skilled persons are permitted to set and adjust system parameters.
• Enter the password as described in section 10.5 ”Entering the Installer Password”
(page 76).
2. Short-circuit the battery current sensor cables.
– BatCur+ to terminal 1
– BatCur − to terminal 1
3. Set the following parameters:
Choose the type of battery current sensor:
– "225.01 BatCurSnsTyp" (None / 50 mV / 60 mV). Only after activation of the parameter
with 50 mV or 60 mV other parameters (02, 03 and 04 in the menu "225# Battery Current
Sensor") will be shown and activated.
4. Set the nominal current for the battery current sensor (e.g., 400 A / 60 mV):
– "225.02 BatCurGain60" (for a 60 mV output)
– "225.03 BatCurGain50" (for a 50 mV output)
5. Start automatic calibration:
– Set "225.04 BatCurAutoCal" to "Start".
☑ The Sunny Island conducts an automatic calibration.
6. Check the offset error:
Display value "120.06 TotBatCur" should be (close to) zero.
60 SI5048-TB-TEN110340 Technical Description