5.2 LEDsThe LHMI includes three protection status LEDs above the display: Normal, Pickup andTrip.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 each three-color LED are divided into three panels.There are 3 separate panels of LEDs available. The 15 physical three-color LEDs in oneLED group can indicate 45 different signals. Altogether, 135 signals can be indicatedsince there are three LED groups. The LEDs are lit according to priority, with red beingthe highest and green the lowest priority. For example, if on one panel there is anindication that requires the green LED to be lit, and on another panel there is an indicationthat requires the red LED to be lit, the red LED takes priority and is lit. The LEDs can beconfigured with PCM600 and the operation mode can be selected with the LHMI orPCM600.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 isindicated with a highlight. Such lines can be selected by using the Up/Down arrowbuttons. Pressing the Enter key shows details about the selected LED. Pressing the ESCbutton 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. Toacknowledge LEDs, press the Clear button to enter the Reset menu (refer to description ofthis menu for details).There are two additional LEDs which are next to the control buttons and . TheseLEDs can indicate the status of two arbitrary binary signals by configuring theOPENCLOSE_LED function block. For instance, OPENCLOSE_LED can be connectedto a circuit breaker to indicate the breaker open/close status on the LEDs.1MRK 506 369-UUS - Section 5Local HMILine distance protection REL670 2.2 ANSI 103Application manual
