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4 HUMAN INTERFACES
b) STANDARD FACEPLATE
The standar faceplate consists of three panels with LED indicators, keys, and a communications port. The RESET key is
used to reset any latched LED indicator or target message, once the condition has been cleared (these latched conditions
can also be reset via the
SETTINGS
to a portable PC.
The USER keys are used by the breaker control feature.
STATUS INDICATORS:
•
IN SERVICE: Indicates that control power is applied; all monitored inputs/outputs and internal systems are OK; the
relay 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 always
latches; 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 is
never 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 flag
waiting 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 a
customized label beside every LED is provided.
User customization of LED operation is of maximum benefit in installations where languages other than English are used to
communicate with operators. Refer to the User-programmable LEDs section in chapter 5 for the settings used to program
the operation of the LEDs on these panels.
GE Multilin
N60 Network Stability and Synchrophasor Measurement System
INPUT/OUTPUTS
RESETTING
STATUS
EVENT CAUSE
IN SERVICE
VOLTAGE
TROUBLE
CURRENT
TEST MODE
FREQUENCY
TRIP
OTHER
ALARM
PHASE A
PICKUP
PHASE B
PHASE C
NEUTRAL/GROUND
Figure 4–18: LED PANEL 1
4.3 FACEPLATE INTERFACE
menu). The RS232 port is intended for connection
RESET
USER 1
USER 2
USER 3
842781A1.CDR
4
4-15
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