SMA Sunny Island 5048 - Commissioning the Battery Current Sensor

Initial Start-up SMA Solar Technology AG
60 SI5048-TB-TEN110340 Technical Description
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).
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.
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).