GE Multilin N60 Network Stability and Synchrophasor Measurement System 4-154 HUMAN INTERFACES 4.3 FACEPLATE INTERFACE4b) STANDARD FACEPLATEThe standar faceplate consists of three panels with LED indicators, keys, and a communications port. The RESET key isused to reset any latched LED indicator or target message, once the condition has been cleared (these latched conditionscan also be reset via the SETTINGS ÖØ INPUT/OUTPUTS ÖØ RESETTING menu). The RS232 port is intended for connectionto a portable PC.The USER keys are used by the breaker control feature.Figure 4–18: LED PANEL 1STATUS INDICATORS:• IN SERVICE: Indicates that control power is applied; all monitored inputs/outputs and internal systems are OK; therelay has been programmed.• TROUBLE: Indicates that the relay has detected an internal problem.• TEST MODE: Indicates that the relay is in test mode.• TRIP: Indicates that the selected FlexLogic™ operand serving as a Trip switch has operated. This indicator alwayslatches; the reset command must be initiated to allow the latch to be reset.• ALARM: Indicates that the selected FlexLogic™ operand serving as an Alarm switch has operated. This indicator isnever latched.• PICKUP: Indicates that an element is picked up. This indicator is never latched.EVENT CAUSE INDICATORS:These indicate the input type that was involved in a condition detected by an element that is operated or has a latched flagwaiting to be reset.• VOLTAGE: Indicates voltage was involved.• CURRENT: Indicates current was involved.• FREQUENCY: Indicates frequency was involved.• OTHER: Indicates a composite function was involved.• PHASE A: Indicates phase A was involved.• PHASE B: Indicates phase B was involved.• PHASE C: Indicates phase C was involved.• NEUTRAL/GROUND: Indicates that neutral or ground was involved.USER-PROGRAMMABLE INDICATORS:The second and third provide 48 amber LED indicators whose operation is controlled by the user. Support for applying acustomized label beside every LED is provided.User customization of LED operation is of maximum benefit in installations where languages other than English are used tocommunicate with operators. Refer to the User-programmable LEDs section in chapter 5 for the settings used to programthe operation of the LEDs on these panels.PICKUPALARMTRIPTEST MODETROUBLEIN SERVICESTATUSUSER 3USER 2USER 1RESETNEUTRAL/GROUNDPHASE CPHASE BPHASE AOTHERFREQUENCYCURRENTVOLTAGEEVENT CAUSE842781A1.CDR
