7400 Series UPS User Manual Chapter 4 - Optional equipment
Single Module and One plus One Systems Remote Alarm and Control Panel (Part No. 4305002 A)
6310018a.02.doc
4-10
Issue 2
(02/98)
4.5 Remote Alarm and Control Panel (Part No. 4305002 A)
When used in conjunction with the Output Interface Board (4590044E)
described previously, the Remote Alarm and Control Panel enables the
alarm signals to be displayed at a remote station up to 100 metres away
from the main equipment. In addition the panel allows the operator to
switch OFF the UPS inverters.
The Remote Alarm and Control Panel, which can be mounted either
horizontally or vertically, contains a mains driven power supply for
alarm LED annunciation. An audible warning accompanies any of the
alarm indications after a short time delay, this can be silenced by the
operator.
The following list gives an interpretation of the controls and alarm
facilities:
Panel Indication Priority Ident
Fig. 4-5
Colour Normal
State
Interpretation
BATTERY ON LOAD Alarm 8 red OFF This is a status alarm showing a UPS is running
on the battery, this may be accompanied with a
mains fault alarm and the indication from the
associated UPS (6) changing from green to red.
LOW BATTERY Alarm 9 red OFF This indicates that either the battery voltage is
low or the battery circuit breaker is open and
would normally follow the BATTERY ON
LOAD (8) alarm. The indication from the
associated UPS (6) will change from green to
red.
OVERLOAD Alarm 10 red OFF This indicates that the system has reached
100% load, after a short period of time it will
be accompanied by the LOAD ON MAINS
(15) alarm. The indication from the associated
UPS (6) will change from green to red.
OVER-
TEMPERATURE
Alarm 11 red OFF If an over temperature condition arises the unit
involved will shut down after 3 minutes, should
this exceed the module redundancy the system
will switch to the bypass. This may be
accompanied by a UPS FAULT alarm (13) and
the indication from the associated UPS (6)
changing from green to red.
MAINS FAULT Alarm 12 red OFF This indicates that the mains power has either
failed or is out of the specified range. This may
be accompanied by a BATTERY ON LOAD
alarm (8) and the indication from the associated
UPS (6) changing from green to red.
UPS FAULT Alarm 13 red OFF This is taken from the UPS common alarm
output and would normally be accompanied
with a UPS alarm and the indication from the
associated UPS (6) changing from green to red.
MAINTENANCE
BYPASS
Alarm 14 red OFF This indicates that the UPS system has been
selected to run on the maintenance bypass
supplies and the load is unprotected from
disturbances.
LOAD ON MAINS Alarm 15 red OFF This is a status alarm warning that the load is
being powered through the static bypass system
and is therefore unprotected.
4.5.1 Introduction
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