6.2 Operation Mode List
- 37 -
LED
No.
RUN
(green)
AL ARM
(orange)
OVER
LOAD
(orange)
BYPASS
(orange)
BATTERY
CONDITION
(green/
orange)
Warning
beep
Operational
status
Remarks
4
Lighting
Lighting
(1)
Bypass
operation due
to UPS failure
The UPS became the failure state
and switched to the bypass
operation. Evacuate important
connection device from the UPS.
In this state, even if an input power
failure occurs, the battery operation
cannot be performed.
Confirm ambient temperature and
ventilation, and press the RESET
switch on the front of the UPS for
approximately 3 seconds after
approximately 10 minutes have
passed. If there is no problem, the
UPS will return to the normal
operation (No.1). If the ALARM
LED does not go out or lights up
again, even after the above
operation is performed, contact an
agent from which you purchased
the UPS or a maintenance
company.
5
Lighting
Indication
of the
amount of
battery
charge
(green)
(3)
Abnormality
in cooling fan
Abnormalities have occurred in the
cooling fan.
If this state continues for
approximately 2 minutes or the
inside temperature of the UPS
rises, the UPS will become the
failure state of No.4.
6
(b)
Slow
blink
-
Manual
bypass
operation
The UPS has been switched to the
bypass operation manually. In this
state, even if an input power failure
occurs, the battery operation cannot
be performed.
7
(b)
Slow
blink
(a)
Fast
blink
(1)
Input error at
startup
Since the abnormalities occur at an
input power supply, the UPS
cannot be started up.
Stop the UPS once, and restart after
confirming that an input power
supply is within the range of the
following conditions.
Input voltage: 160 to 288V AC
Input frequency: 47.5 to 52.5 Hz
or 57 to 63 Hz
8
Lighting
Lighting
Lighting
Indication
of the
amount of
battery
charge
(green)
(1)
Bypass
operation due
to an output
overload
during the
normal
operation
Since the capacity of the
connection device exceeded the
rated value and the UPS became
the overload state, the UPS has
switched to the bypass operation
automatically. Reduce the capacity
of the connection device to less
than the rated value of the UPS. If
the capacity of the connection
device become below the rated
value, the UPS will return to the
normal operation (No.1). In the
state of the continuation of
overload, even if pressing the
RESET switch, the warning beep
does not stop. Although it may
become the overload temporarily
by inrush current at the time of a
load injection, it is no matter since
it is canceled automatically.
Summary of Contents for M-UPS050AD2B
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