7.36
SEL-787 Relay
Instruction Manual
Date Code 20081022
Communications
SEL ASCII Protocol and Commands
SUMMARY Command
The
SUM
) displays an event summary in human
readable format.
Each event summary report shows the date, time, current magnitudes (primary
values), frequency, and, if the relay has the voltage option, voltage magnitudes
(primary values). The relay reports the voltage and current when the largest
current occurs during the event. The event summary report also shows the
event type.
TARGET Command (Display Relay Word Bit Status)
The
TAR
command (see
and
) displays the status of
front-panel target LEDs or Relay Word bit, whether these LEDs or Relay
Word bits are asserted or deasserted.
The elements are represented as Relay Word bits and are listed in rows of
eight, called Relay Word rows. The first four rows, representing the
front-panel operation and target LEDs, correspond to
. All Relay
Word rows are described in
.
Relay Word bits are used in SEL
OGIC
control equations. See
.
The
TAR
command does not remap the front-panel target LEDs, as is done in
some previous SEL relays.
Table 7.48
SUMMARY Command
Command
Description
Access Level
SUM
n
The command without arguments displays the latest
event summary. Use
n
to display particular event
summary.
1
SUM R or C
Use this command to clear the archive.
1
Table 7.49
TARGET Command (Display Relay Word Bit Status)
Command
Description
Access Level
TAR
name
k TAR
n
TAR
n k
Use
TAR
without parameters to display
Relay Word Row 0 or last displayed target row.
1
TAR R
Clears front-panel tripping targets. Unlatches
the trip logic for testing purposes (see
). Shows Relay Word Row 0.
1
Table 7.50
TARGET Command Format
Parameter
Description
name
Display the Relay Word row with Relay Word bit name.
n
Show Relay Word row number
n
.
k
Repeat
k
times (1–32767)
NOTE:
The
TARGET R
command
cannot reset the latched targets if a
TRIP condition is present.
Table 7.51
Front-Panel LEDs and the TAR 0 Command
LEDs
7
6
5
4
3
2
1
0
TAR 0
ENABLED
TRIP_LED
TLED_01
TLED_02
TLED_03
TLED_04
TLED_05
TLED_06
Summary of Contents for SEL-787
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