CHAPTER 4: INTERFACES
•
PHASE A — This LED indicates phase A was involved
•
PHASE B — This LED indicates phase B was involved
•
PHASE C — This LED indicates phase C was involved
•
NEUTRAL/GROUND — This LED indicates that neutral or ground was involved
The user-programmable LEDs consist of 48 amber LED indicators in four columns. The operation of these LEDs is user-
defined. Support for applying a customized label beside every LED is provided. Default labels are shipped in the label
package of every N60, together with custom templates. The default labels can be replaced by user-printed labels.
User customization of LED operation is of maximum benefit in installations where languages other than English are used
to communicate with operators. See the User-Programmable LEDs section in chapter 5 for the settings used to program
the operation of the LEDs on these panels.
4.2.7.2 Standard faceplate
The standard faceplate consists of three panels with LED indicators, keys, and a communications port. The
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 INPUT/OUTPUTS RESETTING
computer.
The
keys are used by the breaker control feature.
USER
Status indicators
•
IN SERVICE — Indicates that control power is applied, all monitored inputs/outputs and internal systems are fine, 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. For more information, see the Test Mode section in the Settings
chapter.
•
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.
N60 NETWORK STABILITY AND SYNCHROPHASOR MEASUREMENT SYSTEM – INSTRUCTION MANUAL
menu). The RS232 port is for connection to a
Figure 4-23: LED panel 1
FRONT PANEL INTERFACE
key is
RESET
4-21
4