Ever Duo II 1000, Instruction Manual

Page: 8 / 16

DUO II / DUO II Pro series UPS – Instruction Manual
2010/03/19
www.ever.eu
8
depends on the capacity of the internal batterry and the power of devices currently
connected to the output (load).
If the parameters of the mains voltage delivered to the UPSs input are correct, the
battery will operate in the condition known as mains operation mode.
While in the mains operation mode the input voltage is conducted to its output via the
anti-overvoltage circuit.
The condition in which the UPS is supplying power from its internal batteries is
known as the battery operation mode. While in this mode, special circuits are
activated which detect extreme and unacceptable operating conditions, such as
overloads or output shortings. The final stage of depletion of the battery while in the
battery operation mode is signalled optically and acoustically (see Table 1).
Switching on the power switch is accompanied by a continuous acoustic signal
and lighting of the green and red LEDs. Next, the UPS switches to the appropriate
operation mode.
Table 1
Mains operation mode Green LED is constantly lit
Battery operation mode Green LED blinks every 4 seconds
Battery depleted in battery operation
mode
Green LED blinks every second
Shorting Red LED is constantly lit
Overload LEDs are not lit
O
p
ti
c
a
l
s
ig
n
a
ll
in
g
UPS malfunction Red LED is constantly lit
Battery operation mode Signal every 4 seconds
Battery low Signal every second
Shorting Continuous signal
Overload Signal every 0.5 seconds
A
c
o
u
s
ti
c
s
ig
n
a
ll
in
g
UPS malfunction Continuous signal
WARNING! In situations when the battery is nearing depletion the
UPS may turn off without prior warning should the load increase.