5.5.1.3
LEDs
The LHMI includes three protection status LEDs above the display: Normal, Pickup and
Trip.
There are 15 programmable indication LEDs on the front of the LHMI. Each LED can
indicate three states with the colors: green, yellow and red. The texts related to each three-
color LED are divided into three panels.
There are 3 separate panels of LEDs available. The 15 physical three-color LEDs in one
LED group can indicate 45 different signals. Altogether, 135 signals can be indicated
since there are three LED groups. The LEDs are lit according to priority, with red being
the highest and green the lowest priority. For example, if on one panel there is an
indication that requires the green LED to be lit, and on another panel there is an indication
that requires the red LED to be lit, the red LED takes priority and is lit. The LEDs can be
configured with PCM600 and the operation mode can be selected with the LHMI or
PCM600.
Information panels for the indication LEDs are shown by pressing the Multipage button.
Pressing that button cycles through the three pages. A lit or un-acknowledged LED is
indicated with a highlight. Such lines can be selected by using the Up/Down arrow
buttons. Pressing the Enter key shows details about the selected LED. Pressing the ESC
button exits from information pop-ups as well as from the LED panel as such.
The Multipage button has a LED. This LED is lit whenever any LED on any panel is lit.
If there are un-acknowledged indication LEDs, then the Multipage LED blinks. To
acknowledge LEDs, press the Clear button to enter the Reset menu (refer to description of
this menu for details).
There are two additional LEDs which are next to the control buttons
and
. They
can, for example, represent the status of a circuit breaker. The LEDs are controlled by the
function block OPENCLOSE_LED which must be configured to show the status of the
breaker.
5.5.2
LED configuration alternatives
5.5.2.1
Functionality
The function blocks LEDGEN and GRP1_LEDx, GRP2_LEDx and GRP3_LEDx
(x=1-15) controls and supplies information about the status of the indication LEDs. The
input and output signals of the function blocks are configured with PCM600. The input
signal for each LED is selected individually using SMT or ACT. Each LED is controlled
by the GRPn_LEDx (n=1-3) function block that controls the color and the operating
mode.
Section 5
1MRK 511 365-UUS A
Local Human-Machine-Interface LHMI
86
Phasor measurement unit RES670 2.1 ANSI
Technical manual
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