MAKELSAN SE SERIES - Page 34

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UDD-SD-112/ Release Date: 25.12.2014/Rev No: 1 /Rev. Date: 18.05.2015
Appendix 2: Table for working status
S/N Working status
LED on Front panel
Alarm beep Note
Normal Battery Bypass Fault
1 Inverter mode (mains power)
Mains power voltage
●
N
Mains power high/low
voltage protection,
switch to battery
mode
● ● ★
One beep / 4 sec
2 Battery mode
Battery voltage -
normal
● ● ★
One beep / 4 sec
Warning for abnormal
voltage of battery
● ★ ★
One beep / sec
3 Bypass mode
Mains power –
normal（under
Bypass）
● ★
One beep / 2 mins
Mains power – high
voltage warning
(under Bypass)
● ★
One beep / 4 sec
Mains power – low
voltage warning
(under Bypass)
● ★
One beep / 4 sec
4 Warning for battery disconnected
Bypass mode
● ★
One beep / 4 sec
Inverter mode
● ★
One beep / 4 sec
Power on / Switch on 6 beeps
5 Output overload protection
Warning for mains
power overload
● ★
2 beeps / sec
Protect operation for
mains power mode
overload
● ●
Long beep
Warning for battery
● ● ★
2 beeps / sec