SMA Sunny Island 5048 - Commissioning the Battery Current Sensor

Initial Commissioning SMA Solar Technology AG
58 SI5048-TEN093630 Technical Description
8.3 Commissioning the battery current sensor
If you have installed a battery current sensor in your system you must synchronize the device's internal
offset. To do this, proceed as follows:
1. Put the Sunny Island on standby, as described in chapter 9.2”Stopping the Sunny Island
(Standby)” (page61).
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 will other parameters (02, 03 and 04 in the menu "225# Battery
Current Sensor") 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 the self-calibration:
– set "225.04 BatCurAutoCal" to "Start"
☑ The Sunny Island conducts a self-calibration.
6. Check the offset error:
"120.06 TotBatCur" should be (close to) zero.
NOTICE!
System error due to wrong parameters being entered.
All parameter settings which could affect the operating safety of the off-grid system are
protected by the installer password.
• Only qualified personnel are permitted to set and adjust system parameters.
• Enter the password as described in section 10.5”Entering the installer password”
(page73).