Led Status Indicators - GE 850 Instruction Manual

FRONT CONTROL PANEL INTERFACE

LED Status Indicators

3–8
Parameter
Load Cur
Unbln
Volt (L-L)
Freq
V/ Hz
S:
P:
Q:
PF
Front panel LED details:
• Number of LEDs: 17
• Programmability: any logic variable, or virtual input
• 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 3-8: Typical LED Indicator Panel
• 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:
This LED indicates that the element selected to produce a trip has operated. This
indicator always latches; as such, a Reset command must be initiated to allow the
latch to be reset.
Input for the value
Metering\Generator\General\Load Current
Metering\Generator\General\Unbalance Current
Metering\Ph VT Bnk1-J2\J2 V AVG L-L
Relay measured frequency metering (from freq tracking)
Metering\Volts per Hertz\Volts Per Hertz 1
Metering\Power 1\Pwr1 Apparent
Metering\Power 1\Pwr1 Real
Metering\Power 1\Pwr1 Reactive
Metering\Power 1\Pwr1 PF
BKR OPE
I SERVICE
TRIP BKR CLOSED
ALARM
SY CHECK OK
PICK UP
AR E ABLED
TEST MODE
AR I PROGRESS
MESSAGE
LOCAL MODE AR LOCKOUT
850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 3: INTERFACES