4-42
N60 NETWORK STABILITY AND SYNCHROPHASOR MEASUREMENT SYSTEM – INSTRUCTION MANUAL
FRONT PANEL INTERFACE
CHAPTER 4: INTERFACES
4
•
BREAKER 1(2) CLOSED
— The breaker is closed
•
BREAKER 1(2) TROUBLE
— A problem related to the breaker has been detected
•
SYNCHROCHECK NO1(6) IN-SYNCH
— Voltages have satisfied the synchrocheck element
The relay is shipped with the default label for the LED panel 2. The LEDs, however, are not pre-programmed. To match the
pre-printed label, the LED settings must be entered as shown in the User-programmable LEDs section of chapter 5. The
LEDs are fully user-programmable. The default labels can be replaced by user-printed labels for both panels as explained in
the next section.
Figure 4-49: LED panel 2 (default labels)
4.2.4.3 Graphical front panel
The graphical front panel has 14 LEDs. LEDs 1 to 5 are fixed status LEDs, and LEDs 6 to 14 are programmable.
Status indicators
•
IN SERVICE
— Indicates that control power is applied, all monitored inputs/outputs and internal systems are fine, the
relay’s test mode is disabled, and the relay is in (online) Programmed mode (under
Settings > Product Setup >
Installation
)
•
TROUBLE
— Indicates that the relay has detected an internal problem. Check the self-test messages outlined at the
end of the Commands and Targets chapter, and view the event records under
Actual Values > Records
. For a beta /
pre-release, this LED is always on.
•
TEST MODE
— Indicates that the relay is in Isolated (solid) or Forcible (flashing) test mode. For information, see the Test
Mode section in the Settings chapter.
•
TRIP
— Indicates that the selected FlexLogic operand serving as a trip output has operated. This indicator latches;
initiate the reset command to reset the latch.
•
ALARM
— Indicates that the selected FlexLogic operand serving as an alarm output has operated