SECTION III
Operation
Page 3.15
BP+2.9X
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3.6 UPS Operating Procedures (continued)
3.6.2 Alarm Identity/History (continued)
The principal use of the Alarm History screen is to identify the source of
audible alarms so that corrective action can be taken. When the audible alarm
sounds, press or
until this Alarm History screen appears. You may depress
the ALARM SILENCE button once to silence the alarm.
You may find it advantageous to leave the message screen on Alarm History
during normal operations. Then, if an alarm sounds, its identity will be seen
immediately.
It may be helpful to view the Alarm History as a list of alarms, ordered by
date and time. Whenever the Alarm History screen is first selected, the first entry
shown on the screen is the latest entry on the list. Pressing
moves you toward
the top of the list and pressing
- moves you toward the bottom of the list. See an
example below.
Table 3-1
Typical Alarm History Screens
Following is the beginning of a typical list of messages from the Alarm
History screen as the startup procedure is begun. The date, time and alarm
identity are shown on the screen in the first Alarm History screen after system
startup. By depressing
you can scroll the screen up one message at a time to the
oldest (earliest) message. Thinking of the Alarm History screens as part of a list will
help you visualize what is happening.
Date
Time I
Alarm
Screen Message
01/01/90
08:30:00.000
CPU Restarted
CPU Restart
01/01/90
08:35:09.452
Input Circuit Breaker Closed
inp bkr clsd
01/01/90
08:35:10.000
Input Voltage Normal
inp vol norm
01/01/90
08:36:00.000
DC Voltage Normal
dc volt norm