5.5.1.3 LEDs AMU0600427 v13The LHMI includes three protection status LEDs above the display: Normal, Pickupand Trip.There are 15 programmable indication LEDs on the front of the LHMI. Each LED canindicate three states with the colors: green, yellow and red. The texts related to eachthree-color LED are divided into three panels.There are 3 separate panels of LEDs available. The 15 physical three-color LEDs inone LED group can indicate 45 different signals. Altogether, 135 signals can beindicated since there are three LED groups. The LEDs are lit according to priority, withred being the highest and green the lowest priority. For example, if on one panel thereis an indication that requires the green LED to be lit, and on another panel there is anindication that requires the red LED to be lit, the red LED takes priority and is lit. TheLEDs can be configured with PCM600 and the operation mode can be selected withthe LHMI or PCM600.Information panels for the indication LEDs are shown by pressing the Multipagebutton. Pressing that button cycles through the three pages. A lit or un-acknowledgedLED is indicated with a highlight. Such lines can be selected by using the Up/Downarrow buttons. Pressing the Enter key shows details about the selected LED. Pressingthe 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 islit. If there are un-acknowledged indication LEDs, then the Multipage LED blinks. Toacknowledge LEDs, press the Clear button to enter the Reset menu (refer to descriptionof this menu for details).There are two additional LEDs which are next to the control buttons and .These LEDs can indicate the status of two arbitrary binary signals by configuring theOPENCLOSE_LED function block. For instance, OPENCLOSE_LED can beconnected to a circuit breaker to indicate the breaker open/close status on the LEDs.Section 5 1MRK 511 408-UUS ALocal Human-Machine-Interface LHMI88 Phasor measurement unit RES670 2.2 ANSITechnical manual
