This is a fully graphical monochrome LCD which measures 120 x 90 mm. It has 28lines with up to 40 characters per line.4.5 LED4.5.1 IntroductionThe LED module is a unidirectional means of communicating. This means thatevents may occur that activate a LED in order to draw the operators attention tosomething that has occurred and needs some sort of action.4.5.2 Status indication LEDsThe three LEDs above the LCD provide information as shown in the table below.LED Indication InformationGreen:Steady In serviceFlashing Internal failureDark No power supplyYellow:Steady Dist. rep. triggeredFlashing Terminal in test modeRed:Steady Trip command issued4.5.3 Indication LEDsThe LED indication module comprising 15 LEDs is standard in 670 series. Its mainpurpose is to present an immediate visual information for protection indications oralarm signals.Alarm indication LEDs and hardware associated LEDs are located on the righthand side of the front panel. Alarm LEDs are located on the right of the LCDscreen and show steady or flashing light.• Steady light indicates normal operation.• Flashing light indicates alarm.Alarm LEDs can be configured in PCM600 and depend on the binary logic.Therefore they can not be configured on the local HMI.Typical examples of alarm LEDsSection 4 1MRK511251-UEN BUnderstand the IED local human-machine interface22Operator's manual
