9-4 Analyzing Events Date Code 20080110
SEL-387E Instruction Manual
Note: The relay sends event summaries to all serial ports with setting AUTO = Y each time an
event triggers.
The latest 99 event summaries are stored in nonvolatile memory and are accessed by the HIS
command. The HIS C command clears the event summaries and corresponding full-length
standard event reports from nonvolatile memory. See HIS (History of Events) and HIS C
(Clear History and Events) in Section 7: Communications for more information.
Event Type
The “Event:” field shows the event type. The possible event types and their descriptions are
shown in
Table 9.1. Note the correspondence to the preceding event report triggering conditions
(see Standard Event Report Triggering in this section).
Table 9.1: Event Types
Event Event Triggered by:
TRIP1 Assertion of Relay Word bit TRIP1
TRIP2 Assertion of Relay Word bit TRIP2
TRIP3 Assertion of Relay Word bit TRIP3
TRIP4 Assertion of Relay Word bit TRIP4
CLS1 Assertion of Relay Word bit CLS1
CLS2 Assertion of Relay Word bit CLS2
CLS3 Assertion of Relay Word bit CLS3
ER SEL
OGIC
control equation setting ER
PULSE Execution of PUL serial port command
TRIG Execution of TRI serial port command
The order of precedence for listing the event type in the summary is: TRIP, CLOSE, ER,
PULSE, TRIG (as implied by the table). If more than one type of report trigger occurs within the
same report period, the type of highest precedence will be shown in the “Event:” field of the
report summary.
Targets
The target field shows all front-panel targets that were illuminated at the end of the triggered
event report. The targets include: TRIP, INST, 87-1, 87-2, 87-3, 24, 50/51, 81, A, B, C, N, W1,
W2, and W3.
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