Sel 411L - Figure 7.2 LCD Display and Navigation Pushbuttons

P.7.2
SEL-411L Relay Protection Manual Date Code 20151029
Front-Panel Operations
Front-Panel Layout
A 128 x 128 pixel LCD (liquid crystal display) shows relay operating data
including event summaries, metering, settings, and relay self-test information.
Six navigation pushbuttons adjacent to the LCD window control the relay
menus and information screens. Sequentially rotating display screens relate
important power system metering parameters; you can easily change this
ROTATING DISPLAY to suit your particular on-site monitoring needs. Use a
simple and efficient menu structure to operate the relay from the front panel.
With these menus you can quickly access metering, control, and settings.
Front-panel LEDs (light emitting diodes) indicate the relay operating status.
You can confirm that the relay is operational by viewing the ENABLED LED.
The relay illuminates the TRIP LED target to indicate a tripping incident. The
relay is factory programmed for particular relay elements to illuminate the
other target LEDs. You can program these target LEDs to show the results of
the most recent relay trip event. The asserted and deasserted colors for the
LEDs are programmable in the 12-pushbutton models.
The front panel features large operator control pushbutton switches with
annunciator LEDs that facilitate local control. Factory default settings
associate specific relay functions with these direct-action pushbuttons and
LEDs. Using SEL
OGIC
®
control equations or front-panel settings PBn_HMI,
you can readily change the default direct-action pushbutton functions and
LED indications to fit your specific control and operational needs. Change the
pushbutton and pushbutton LED labels with the slide-in labels adjacent to the
pushbuttons. The asserted and deasserted colors for the LEDs are
programmable.
The front panel includes an EIA-232 serial port (labeled PORT F) for
connecting a communications terminal or using the
ACSELERATOR QuickSet
®
SEL-5030 software program. Use the common EIA-232 open ASCII
communications protocol to communicate with the relay via front-panel
PORT F. Other communications protocols available with the front-panel port are
M
IRRORED BITS
®
communications, and DNP3.
Front-Panel LCD
The LCD is the prominent feature of the front panel. Figure 7.2 shows the
areas contained in the LCD:
➤ Title area
➤ Main area
➤ Message area
➤ Scroll bars
The scroll bars are present only when a display has multiple screens.
Figure 7.2 LCD Display and Navigation Pushbuttons
Title Area
Main Area
Scroll Bars
Message Area
Navigation
Pushbuttons