Rugged And Membrane (3 Pb) Front Panel Leds - GE 850 Instruction Manual

CHAPTER 3: INTERFACES

Rugged and Membrane (3 PB) Front Panel LEDs

850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
Front panel LED details:
• Number of LEDs: 17
• Programmability: Any FlexLogic operand
• Reset mode: self-reset or latched
The 850 front panel provides two columns of 7 LED indicators each, and 3 LED pushbutton
indicators. The "IN-SERVICE" (LED 1) and the "PICKUP" (LED 4) indicators from the first LED
column are non-programmable LEDs. The bottom 3 LED indicators from the first column,
and the 7 LED indicators from the second LED column are fully programmable. The
indicators "TRIP" (LED 2), and "ALARM" (LED 3), are also programmable, and can be
triggered by either a selection of FlexLogic operand assigned in their own menu, or by the
operation of any protection, control or monitoring element with function selected as Trip,
Alarm, or Latched Alarm.
The RESET key is used to reset any latched LED indicator or Target Message once the
condition has been cleared (latched conditions can also be reset via the RESETTING menu).
Figure 3-10: LED numbering
Figure 3-11: Typical LED Indicator Panel
Some status indicators are common while some are feature specific which depend on the
availability in the order code. The common status indicators in the first column are
described below.
• IN SERVICE
– Green color = Relay powered up, passed self-test has been programmed, and
ready to serve. This LED indicates that control power is applied, all monitored
inputs, outputs, and internal systems are OK, and that the device has been
programmed.
– Red color = Relay failed self test, has not been programmed, or out of service
• TRIP
LED 1
LED 8
LED 2
LED 9
LED 3
LED 10
LED 4
LED 11
LED 5
LED 12
LED 6
LED 13
LED 7
LED 14
LED 15
LED 16
BKR OPEN
IN SERVICE
TRIP BKR CLOSED
ALARM
SYNCHECK OK
PICK UP
AR ENABLED
TEST MODE
AR IN PROGRESS
MESSAGE
LOCAL MODE AR LOCKOUT
FRONT CONTROL PANEL INTERFACE
LED 17
3–11