9.2
SEL-587Z Instruction Manual
Date Code 20020903
Event Reports and SER
Event Reports
Event Reports
See
for an example event report.
Event Report
Triggering
The relay triggers (generates) an event report when any of the following
occurs:
Trip element assertion (TRIP1, TRIP2, TRIP3)
Assertion of any element set in the ER1 (variable 1 for event
report trigger) logic setting
Assertion of any element set in the ER2 (variable 2 for event
report trigger) logic setting
Issuance of the
TRIGGER
command
Issuance of the
PULSE OUT1–OUT4
command
If automessaging is enabled, the relay sends an event report summary to the
communications port upon any of these occurrences.
Relay elements set in the ER1 and ER2 SEL
OGIC®
control equation
variables
trigger the event reports in a level-sensitive manner, while TRIP1, TRIP2,
TRIP3 variables trigger the event report on rising edges. For elements set in
the ER1 and ER2 equations, the relay does not generate multiple event reports
when additional relay elements pick up. Only the first relay element of any
continuous sequence triggers an event report.
The relay triggers a second report for the same event if the trip occurs after the
first report ends. Thus, the relay records the beginning and end of each event
for which it trips. A second event is not provided if any of the trip outputs
assert at or less than 11 cycles after the first report is triggered. This is why
ER2 is available, i.e., select elements in ER1 and ER2 carefully, so that event
reports are created when more elements are picked up. For example, enter 50
elements in ER1 and 51 elements in ER2.
For events triggered via the TRIP1, TRIP2, TRIP3 equations, additional event
reports are generated even while any or all relay elements remain picked up.
The relay records trigger date and time to the nearest eighth-cycle and
references these to the TRIGGER row of data in the report. The TRIGGER
row is indicated by a > symbol after the IC analog channel in the event report.
The relay stores 10 event reports in nonvolatile flash memory.
Relay Word Bit TRIP
Relay Word bit TRIPn (n= 1, 2, 3) is typically assigned to an output contact
for tripping a circuit breaker (e.g., SEL
OGIC
control equation setting OUT1 =
TRIP1). SEL
OGIC
control equation setting TRn controls the assertion of Relay
Word bit TRIP (see
Trip Logic (TRn, ULTRn, TDURD) on page 4.16 in
). Any condition that is set to trip in setting TRn (e.g.,
TR1 = 51PT + 51GT + 50P1 + LB3) does not have to be entered in SEL
OGIC
control equation settings ER1 or ER2. The assertion of Relay Word bit TRIP1
automatically triggers an event report.
Summary of Contents for SEL-587Z
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