State of Charge (SOC) is not showing in the Li-ion battery system in Li-Ion Battery

State of Charge (SOC) is not showing in the Li-ion battery system in Li-Ion Battery

State of Charge (SOC) is not showing in the Li-ion battery system
Reset the unit by pressing the reset button with a stick

NotesSOC indication available in Li-ion system
If yes, after reset, alarm cleared. Problem resolved.
If no, Monitor and confirm alarm status from the alarm table.
Verify the address switch settings as per the binary system shown in the image


Verify the battery communication cable connection. Ensure the master communication cable is properly connected between the battery and the SMPS RS485 port. The communication cable voltage should be between 2V and 5V.

NotesBattery communication voltage is within the acceptable range.
If no, Provide TT number for BMS card/software upgradation.

Part Codes: METER MODULE DIGITAL – 5020593900, BATTERY MANAGEMENT SYSTEM (15 STRING) – 5045165200 SEG-48100-02D 

if yes, follow below steps
To select the battery profile in the controller:
Go to Main Menu → Battery → Battery Profile → Select the appropriate battery type.
After updating the configuration file, deactivate and then reactivate the system to verify the status.
Path: Main Menu → Controller → Configuration → Update → Deactivate → Activate
Verify the battery communication cable connection. Ensure the master communication cable is properly connected between the battery and the SMPS RS485 port. 


NotesSOC indication available in Li-ion system
If yes, Fault cleared after rectification of loose connection, controller parameter setting, and necessary corrective actions.
If not ok, Provide TT number for BMS card/software upgradation.

Part Codes: METER MODULE DIGITAL – 5020593900, BATTERY MANAGEMENT SYSTEM (15 STRING) – 5045165200

SEG-48100-02D Li-ion Battery Module G1 4.8kWh – B04MT-E01151P0IN0 (if battery found dead)


Fault Tree


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