6.5.9 VIEWING THE SEQUENCE OF EVENTS LOGS
The RFL 9300 maintains a list of the last five alarm events and the last five trip events that took place during
system operation. The alarm events are stored in the “alarm sequence of events log” and the trip events are
stored in the “trip sequence of events log”. To view these logs, first use the “S” command to get into the se-
quence of events menu as shown in Figure 6-22.
Format: 9300>S [ENTER]
SEQUENCE OF EVENTS MENU
RFL 9300 RFL Electronics Inc.
January 30, 2002 6-52 (973) 334-3100
H - Display sequence of events help
A - Display the Alarm sequence of events
T - Display the Trip sequence of events
F - Force an Oscillography event
O - Output Oscillography trip event to Port
R - Reset all events
Q - Leave sequence of events menu
Figure 6- 22. Sequence of events menu
When the "A" command is entered, the alarm sequence of events log is sent to your terminal. A typical alarm
sequence of events display is shown in Figures 6-23 and 6-24. This is a two-page display; it stops at the end
of each page, so you can view the information. When you're finished looking at the first page, press any key to
view the second page.
When the "T" command is entered, the trip sequence of events log is sent to your terminal. A typical trip se-
quence of events display is shown in Figure 6-25. This is a one-page display.
Each action that causes a record to be stored in the RFL 9300's memory is called an "event." These include
alarms, trips, and direct transfer trips. The RFL 9300's alarm sequence-of-events log can store five alarm
events, and the trip sequence of events log can store five trip events. The five most recent of each event type
will be stored; earlier events are cleared from the log as new events occur.
Each alarm event can store up to four alarms. Once an alarm event has begun, subsequent alarms can be
added to that event until it contains four alarms. The event is ended when all the alarms are cleared.
The trip events will display all tripped phases. When a trip event has begun, subsequent phase trips will be
added to that event. The event will end when all the trips are cleared.
Each event is time-tagged in hours, minutes, seconds and milliseconds (ms). The battery backed, real time
clock that generates the time-tags is started at the factory before the RFL 9300 is shipped. The clock can be
adjusted by the user in the field by using the RS-232 port. If IRIG-B is used, this clock will be automatically
synchronized to the IRIG-B signal.
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