8.5
Date Code 20170601 Instruction Manual SEL-387-0, -5, -6 Relay
Front-Panel Interface
Pushbuttons
history buffer, but a much smaller number of full event reports. The EVENTS
command will display everything but the currents for the older, incomplete
history summaries. Use {CANCEL} or {EXIT} to return to the default display.
Figure 8.6, at the end of this section, shows the EVENTS display structure.
STATUS
The {STATUS} pushbutton displays the relay status information in similar
fashion to the serial port STA command. When {STATUS} is pushed, the initial
display shows:
STATUS: [OK/WARN/FAIL]
FID=
SEL-387-R103 (e.g., the first 12 characters of the FID string)
The STATUS line shows the worst state of the several parameters examined.
The right/left arrow keys can be used to view the rest of the FID string.
The up/down arrow keys are then used to manually scroll through the
diagnostic fields, showing the analog channel offsets, power supply voltages,
internal temperature, RAM (OK/FAIL), etc. The display remains in this scroll
sequence until either {CANCEL} or {EXIT} is pushed.
OTHER
The {OTHER} pushbutton is used to access several miscellaneous functions, and
mimics the corresponding serial port commands for these functions. Pushing
{OTHER} provides a menu that prompts the user to select
DATE, TIME, TARget,
BKR ( breaker), RESET51, or LCD. These perform the same functions as the
serial port commands DAT, TIM, TAR, BRE, and RES. Use any arrow key
and {SELECT} to choose the function. These {OTHER} subfunctions are discussed
below in alphabetical order.
BKR
This function displays the breaker monitor accumulator values for internal and
external trips, the accumulated interrupted currents by pole, the percent
contact wear, and the time/date of last reset, for the selected breaker.
When BKR is selected, a second menu appears to prompt the user to select
Bk1, Bk2, Bk3, or Bk4. Use the right/left arrow keys and {SELECT} to choose.
Another menu appears, asking whether
DISPLAY or RESET is desired. Use the
right/left arrow keys and {SELECT} to choose.
If
DISPLAY is selected, the display scrolls automatically, showing the Internal
and External trip counters for the breaker chosen, the phase currents
accumulated for each type of trip, and the percent contact wear by breaker
pole. The first two-line display shows
P1, the second P2, and the third P3. The
fourth display shows
% wear for each of the three poles, in integer values of
100 or less. The fifth display shows
Last Reset From and the date/time of last
reset. Pushing {SELECT} will toggle between stop-scroll and resume-scroll, to
facilitate hand-recording of data values.
Push {CANCEL} to return to the
OTHER main menu. Push {EXIT} to return to the
default display.
Figure 8.7, at the end of this section, shows the full
OTHER/BKR menu and
display structure.
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