Alerts by Status Indicators
1.2
Voltage abnormality
1.2.1
Cell overvoltage
Indicators
Alert Level Alert condition
Charge
limit
Discharge
limit
Release condition
Warning
> 4.25 V for 3 s
0%
100% < 4.20 V for 3 s
Fault 1
> 4.28 V for 3 s
0%
100% < 4.25 V for 3 s
Fault 2
> 4.30 V for 3 s
0%
0%
The highest cell voltage is higher than the tolerance limit. At the fault 1 state, try
these steps:
1. Check the conditions of the battery module using any available method.
2. Manipulate the higher level system to discharge the ESS with a current less than
or equal to 63 A until the highest cell voltage is lower than 4.2 V.
3. Re-activate the ESS when the red indicator turns off.
If the problem persists, contact LG Chem for technical assistance.
1.2.2 Cell undervoltage
Indicators
Alert Level Alert condition
Charge
limit
Discharge
limit
Release condition
Warning
< 2.8 V for 3 s
100%
0% > 3.0 V for 3 s
Fault 1
< 2.6 V for 3 s
100%
0% > 2.8 V for 3 s
Fault 2
< 2.4 V for 3 s
0%
0%
The lowest cell voltage is lower than the tolerance limit. At the fault 1 state, try these
steps:
1. Check the conditions of the battery module using any available method.
2. Manipulate the higher level system to charge the ESS with a current less than or
equal to 63 A until the lowest cell voltage is higher than 3 V.
3. Re-activate the ESS when the red indicator turns off. The ESS recharges for 10
minutes before performing a diagnosis after it is activated.
If the problem persists, contact LG Chem for technical assistance.
NOTE
The battery module turns off 10 minutes after going into the fault 2 state.
1.2.3 Too low module voltage
Indicators
Alert Level Alert condition
Charge
limit
Discharge
limit
Release condition
Fault 2
< 29.0 V for 3 s
0%
0%
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