Vertiv Liebert APM 400 - Page 45

User Manual 10H52258UM60 - Rev. 3 - 01/2019 42
APM 400/600 Operation Control and Display
Prompt Description
Transfer with
out
interrupt
ion
,
confirm or cancel
The load executes an interval transfer between the inverter and bypass
The load is too high to be
transferred without interruption
The total load must be less than the capacity of one UPS
, in order
to allow
a parallel system to perform an uninterrupted transfer from bypass to
inverter
This operation
will interrupt the
UPS output, confirm or cancel
The bypass is abnormal,
switching
off the inverter will cause the load to
be de-energized
This operation leads to inverter
overload, confirm or cancel
Switching
off this inverter will lead to the overload of the remaining
inverter(s) in a parallel system
Switch on more UPS to supply
current load
The number of inverters already switched on is insufficient to supply the
current load. The user is requested to switch additional UPS units on
Battery will be discharged,
confirm or cancel
If
the
battery capacit
y test
is selected
, the battery will discharge until the
UPS shuts down. This requests the user to confirm the test. If the user
opts to cancel rather than confirm, the test is abandoned and the UPS
reverts to inverter mode
System self
-
test finished,
everything is OK
No action required
Please check the current
warnings
Check the active alarm messages
Enter control password Required for battery or UPS test (default: 12345)
Battery Self Test aborted,
conditions not met
Battery self-test condition is not met. Please check if the battery is in
boost charge state and the load is greater than 20% of the nominal value
Battery Top-up Charge aborted,
conditions not met
This prompt appears when
the user selects the top
-
up
charge command
when battery top-up charge conditions are not met (e.g. no battery,
charger failure)
5.8.5 Alarm List
Table 5.9 below describes all the alarm messages that are displayed either on the Event menu or Record menu.
Table 5.9
Alarm
Description
Fault Clear
FAULT CLEAR key on the operator co
ntrol and display panel pressed
Rectifier in Setting The rectifier starts up and is in synchronization
Inverter in Setting The inverter starts up and is in synchronization
Inverter Manual On
INVERTER ON key on the operator control and display panel
has
been
pressed
in order to switch the inverter on
Inverter Manual Off
INVERTER OFF
key on the operator control and display panel
has been
pressed in order to switch the inverter off
Turn On Fail
The inverter failed to
switch on when the INVERTER ON key wa
s
pressed. This
may be the result of an invalid operation (maintenance bypass switch closed)
or DC bus or rectifier not ready
Rec. Soft Start Fail
This alarm is generated if the DC bus voltage is low
Silence Active
The
acoustic alarm has been enabled by p
ressing the
SILENCE ON/OFF key on
the operator control and display panel
Silence Inactive
The acoustic alarm has been deactivated by pressing the
SILENCE ON/OFF
key on the operator control and display panel
Bypass Mode The UPS is in bypass mode
Normal Mode The UPS is in normal mode
Battery Mode The UPS is in battery mode
Check UPS Output UPS shutdown with no output power