SMA Solar Technology AG 7 Commissioning
Installation Manual SI80H-60H-OffGrid-IA-en-11 101
7.13 Commissioning the Battery Current Sensor
To operate the battery current sensor, you must set the type of the battery current sensor and start
calibration and offset adjustment of the battery current sensor.
The off-grid inverter distinguishes between 50 mV and 60 mV battery current sensors. These type
designations indicate the amplification factor of the battery current sensor. The amplification factors
are given in amperes per 50 mV or in amperes per 60 mV, e.g. 400 A/60 mV.
If you have installed a battery current sensor, commission it as follows:
Requirement:
☐ In a cluster, the Sunny Remote Control must be connected to the master.
1. Switch the off-grid system off and open the BatFuse switch-disconnector.
2. Short-circuit the measuring cable on the battery
current sensor. Connect the BatCur– and BatCur+
measuring wires to the terminal for BatCur+.
3. Close the BatFuse switch-disconnector and switch the off-grid system on.
4. Switch to installer mode (see Section 7.5).
5. Select the 225.01 BatCurSnsTyp parameter and set it to the type of the battery current sensor
used.
6. For a 60 mV model, select the 225.02 BatCurGain60 parameter and set it to the rated current
of the battery current sensor.
7. For a 50 mV model, set the 225.03 BatCurGain50 parameter to the rated current of the
battery current sensor.
8. Select the 225.04 BatCurAutoCal parameter and set it to Start.
☑ The off-grid inverter starts calibration and offset adjustment.
9. After ten seconds, select the 120.06 TotBatCur parameter and read off the value.
☑ The parameter value is between 0 A and 1 A.
✖ The parameter value is not between 0 A and 1 A.
The measuring cables are not correctly connected or short-circuited.
• Check whether the measuring cables are correctly connected and short-circuited.
• Repeat steps 6 and 7.
10. Switch off the off-grid system and open the BatFuse switch-disconnector.
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