B48100 ESS Unit User Manual
9
Table 2-5 LED status indicators
Battery
Status
SOC
LED1
LED2
LED3
LED4
LED5
ALM
RUN
Shutdown
/
off
off
off
off
off
off
off
Standby
80%
＜
SOC
≤
100%
●
●
●
●
●
off
Flashing
60%
＜
SOC
≤
80%
●
●
●
●
off
off
Flashing
40%
＜
SOC
≤
60%
●
●
●
off
off
off
Flashing
20%
＜
SOC
≤
40%
●
●
off
off
off
off
Flashing
0%
＜
SOC
≤
20%
●
off
off
off
off
Flashing
Flashing
SOC=0
off
off
off
off
off
Flashing
/
●
Flashing
Charging
SOC=100%
●
●
●
●
●
off
Flashing
80%
＜
SOC
＜
100%
●
●
●
●
Flashing
off
Flashing
60%
＜
SOC
≤
80%
●
●
●
Flashing
off
off
Flashing
40%
＜
SOC
≤
60%
●
●
Flashing
off
off
off
Flashing
20%
＜
SOC
≤
40%
●
Flashing
off
off
off
off
Flashing
0%
≤
SOC
≤
20%
Flashing
off
off
off
off
off
Flashing
Discharging
80%
＜
SOC
≤
100%
●
●
●
●
●
off
●
60%
＜
SOC
≤
80%
●
●
●
●
off
off
●
40%
＜
SOC
≤
60%
●
●
●
off
off
off
●
20%
＜
SOC
≤
40%
●
●
off
off
off
off
●
0%
＜
SOC
≤
20%
●
off
off
off
off
Flashing
●
SOC=0
off
off
off
off
off
Flashing
/
●
Flashing/
●
A special ALM light flashing state: when the communication between batteries is
lost
or
abnormal,all the lights from SOC to RUN of the master battery will flash
together.
● means green light always on
● means red light always on
Flashing
: means green light flashing or
red light flashing
2.4 Battery Management System(BMS)
2.4.1 Voltage Protection
Low Voltage Protection in Discharging
：
When any battery cell voltage or total voltage is lower than the rated protection value during
discharging, the over-discharging protection is activated, and the battery buzzer makes an alarm
sound. Then battery system stops supplying power to the outside. When the voltage of each cell
back to rated return range, the protection is over.
Over Voltage Protection in Charging
：
Battery will stops charging when total voltage or any battery cell voltage reaches the rated
protection value during charging stage. When total voltage or all cell back to rated range, the
protection is over.
2.4.2 Current Protection
Over Current Protection in Charging
：
