Dyness B4850, User Manual

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B4850 ESS Unit User Manual
10
Table 2-5 LED status indicators
Battery
Status
SOC LED1 LED2 LED3 LED4 ALM RUN
Shutdown / off off off off off off
Standby
75%
≤SOC≤100% ● ● ● ●
off Flashing
50%
≤SOC
＜
75%
● ● ●
off off Flashing
25%
≤SOC
＜
50%
● ●
off off off Flashing
5%
＜
SOC
＜
25%
●
off off off off Flashing
0%
＜
SOC
≤5% ●
off off off Flashing Flashing
SOC=0 off off off off
Flashing /
●
Flashing
Charging
SOC=100%
● ● ● ●
off Flashing
75%
≤SOC
＜
100%
● ● ●
Flashing off Flashing
50%
≤SOC
＜
75%
● ●
Flashing off off Flashing
25%
≤SOC
＜
50%
●
Flashing off off off Flashing
0%
＜
SOC
＜
25%
Flashing off
off off off Flashing
Discharging
75%
≤SOC≤100% ● ● ● ●
off
●
50%
≤SOC
＜
75%
● ● ●
off off
●
25%
≤SOC
＜
50%
● ●
off off off
●
5%
＜
SOC
＜
25%
●
off off off off
●
0%
＜
SOC
≤5% ●
off off off Flashing
●
SOC=0 off off off off
Flashing/
●
Flashing
A special ALM light flashing state:when the communication between batteries is
lost,the red alarm light of the master battery will flash.
● 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 protection value during discharging,
the over-discharging mode 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
：
When the charge current
＞
45A, current limit protection mode is activated, current will be limited
to 5A
，
protection is removed after rated time delaying 10S. Circulate like this until the current is
lower than 45A.
Over Current Protection in Discharging
：
When the discharging current is greater than the protection value 55A, the battery buzzer alarms
and the system stops discharging. Protection is removed after rated time delaying 1min.