P.7.42
SEL-411L Relay Protection Manual Date Code 20151029
Front-Panel Operations
Front-Panel Operator Control Pushbuttons
displayed via the operator control pushbutton; it has no effect on the event
summaries automatically displayed or the event summaries available through
the main menu. Each HMI screen category can be assigned to a single
pushbutton. Attempting to program more than one pushbutton to a single HMI
screen category will result in an error. After assigning a pushbutton to an HMI
screen category, pressing the pushbutton will jump to the first available HMI
screen in that particular category. If more than one screen is available, a
navigation scroll bar will be displayed. Pressing the navigation arrows will
scroll through the available screens. Subsequent pressing of the operator
control pushbutton will advance through the available screens, behaving the
same as the Right Arrow or the Down Arrow pushbutton. Pressing the ESC
pushbutton will return the user to the
ROTATING DISPLAY. The second way to
program the operator control pushbutton is through SEL
OGIC control
equations, using the pushbutton output as a programming element.
Using SEL
OGIC control equations, you can readily change the default LED
functions. Use the slide-in labels to mark the pushbuttons and pushbutton
LEDs with custom names to reflect any programming changes that you make.
The labels are keyed; you can insert each Operator Control Label in only one
position on the front of the relay. Included on the relay Product Literature CD
are word processor templates for printing slide-in labels. See the instructions
included in the Configurable Label kit for more information on changing the
slide-in labels.
The relay has two types of outputs for each of the front-panel pushbuttons.
Relay Word bits represent the pushbutton presses. One set of Relay Word bits
follows the pushbutton and another set pulses for one processing interval
when the button is pressed. Relay Word bits PB1–PB12 are the “follow”
outputs of operator control pushbuttons. Relay Word bits
PB1_PUL–PB12PUL are the pulsed outputs.
Annunciator LEDs for each operator control pushbutton are
PB1_LED–PB12LED. The factory defaults programmed for these LEDs are
protection latches (PLT01, for example), settings groups, Relay Word bits
(NOT SG1), and the status of the circuit breaker auxiliary contacts (52AA1).
The asserted and deasserted colors for the LED are determined with settings
PBnCOL. Options include red, green, amber, or off.
You can change the LED indications to fit your specific control and
operational requirements. This programmability allows great flexibility and
provides operator confidence and safety, especially in indicating the status of
functions that are controlled both locally and remotely.
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