APC 6739380EN/JC User Manual

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Page 38 
- 6739380EN/JC
Alarm display and buzzer reset
Display of alarms
This message is displayed only if the buzzer has
been activated. It is a prompt to consult the list of
current alarms by pressing the "alarms" ("!")
button after having read each message.
The last alarm message is not followed by the
blinking "!" character. If the "alarms" ("!") button
is pressed again, the system returns to the
initial screen.
List of general alarms
LOAD PROTECTED
POWER SUPPLY  OK
This is the normal display when there
are no alarms or problems and the load
is correctly supplied by the inverter.
LOAD PROTECTED
PROBLEM...       !
The load is supplied by the inverter, but
a minor problem requiring servicing has
occurred. The cause of the problem is
contained in the list of secondary
alarms (see next page).
MAINS
1 PROBLEM
LOAD ON BATTERY  !
The load is supplied by the inverter, but
Mains 1 is down or outside tolerances
and power is supplied by the battery.
etc.). In the next one to two minutes at
most, the inverter will shutdown and the
load will be interrupted.
Two low battery thresholds exist:
a battery voltage threshold, which is
slightly above the threshold causing an
inverter shutdown (this threshold can
be disabled);
a time threshold, which refers to an
adjustable value of the time remaining
before effective end of battery power.
ALARM ...
!
This message signifies that the battery
circuit breaker is open and the inverter
shut down. The cause of the alarm is in
the list of secondary alarms (see next
page).
REMAINING BAT. TIME
__MN  %KW LOAD =___
This message is automatically
displayed for five seconds, alternating
with the preceding. It indicates the
remaining battery time in minutes prior
to inverter shutdown. The calculation
takes into account:
the percentage of full rated load
power being drawn;
the type of battery;
battery temperature;
battery age.
LOW BATTERY
SHUTDOWN IMMINENT !
This message replaces the "Mains 1
problem, load on battery" message
when battery voltage reaches the "low
battery shutdown" warning level. It
alternates with the message described
above, "remaining battery time…".
The user must then rapidly take
measures to secure the load (load
shedding, file saves and shutdown,
When the control panel has not been
used for ten minutes, the alphanumeric
display presents a general message
indicating the general status of the
cubicle or the system.
If there are no alarms or problems, and
the load is correctly supplied by the
inverter, the display indicates:
LOAD PROTECTED
POWER SUPPLY  OK
If there is a problem, the screen first
displays a general alarm, then if
applicable, a list of secondary alarms
may be obtained by successively
pressing the "alarms" button ("!").
See the lists below.
For the local "Monitor" option,
button 11 on the hidden control panel
stops the buzzer.
For the remote "Monitor" option ("Tele
Monitor"), the "!" button stops the
buzzer.
Note:
The existence of another alarm in the
list is indicated by the blinking "!"
character at the end of a message.
The last alarm in the list is not followed
by the blinking "!" character at the end.
If the "alarms" button is pressed again,
the system returns to the initial screen.
!
(ALARM MESSAGE NUMBER 2)
!
(LAST ALARM MESSAGE)
general alarm
on the initial screen
initial screen
!
!
!
!
(ALARM MESSAGE NUMBER 1)
"Monitor" alphanumeric display
 (cont.)