User Interfaces; Faceplate Interface; Display - GE 489 Instruction Manual

3 USER INTERFACES

3 USER INTERFACES 3.1FACEPLATE INTERFACE
All messages appear on a 40-character liquid crystal display. Messages are in plain English and do not require the aid of an
instruction manual for deciphering. When the user interface is not being used, the display defaults to the user-defined sta-
tus messages. Any trip or alarm automatically overrides the default messages and is immediately displayed.
a) 489 STATUS LED INDICATORS
• 489 IN SERVICE: Indicates that control power is applied, all monitored input/output and internal systems are OK, the
489 has been programmed, and is in protection mode, not simulation mode. When in simulation or testing mode, the
LED indicator will flash.
• SETPOINT ACCESS: Indicates that the access jumper is installed and passcode protection has been satisfied. Set-
points may be altered and stored.
• COMPUTER RS232: Flashes when there is any activity on the RS232 communications port. Remains on continuously
if incoming data is valid.
• COMPUTER RS485 / AUXILIARY RS485: Flashes when there is any activity on the computer/auxiliary RS485 com-
munications port. These LEDs remains on continuously if incoming data is valid and intended for the slave address
programmed in the relay.
• ALT. SETPOINTS: Flashes when the alternate setpoint group is being edited and the primary setpoint group is active.
Remains on continuously if the alternate setpoint group is active. The alternate setpoint group feature is enabled as
one of the assignable digital inputs. The alternate setpoints group can be selected by setting the
DUAL SETPOINTS / ACTIVATE SETPOINT GROUP
• RESET POSSIBLE: A trip or latched alarm may be reset. Pressing the
• MESSAGE: Indicator flashes when a trip or alarm occurs. Press the
sages. Remains solid when setpoint and actual value messages are being viewed. Pressing the
display to the default messages.
b) GENERATOR STATUS LED INDICATORS
• BREAKER OPEN: Uses the breaker status input signal to indicate that the breaker is open and the generator is offline.
• BREAKER CLOSED: Uses the breaker status input signal to indicate that the breaker is closed and the generator is
online.
• HOT STATOR: Indicates that the generator stator is above normal temperature when one of the stator RTD alarm or
trip elements is picked up or the thermal capacity alarm element is picked up.
• NEG. SEQUENCE: Indicates that the negative sequence current alarm or trip element is picked up.
• GROUND: Indicates that at least one of the ground overcurrent, neutral overvoltage (fundamental), or neutral under-
voltage (3rd harmonic) alarm/trip elements is picked up.
• LOSS OF FIELD: Indicates that at least one of the reactive power (kvar) or field-breaker discrepancy alarm/trip ele-
ments is picked up.
GE Multilin
489 STATUS GENERATOR STATUS OUTPUT RELAYS
489 IN SERVICE BREAKER OPEN
SETPOINT ACCESS BREAKER CLOSED
COMPUTER RS232 HOT STATOR
COMPUTER RS485 NEG. SEQUENCE
AUXILIARY RS485 GROUND
ALT. SETPOINTS LOSS OF FIELD
RESET
VT FAILURE
POSSIBLE
MESSAGE BREAKER FAILURE
Figure 3–1: 489 LED INDICATORS
setpoint to "Group 2".
489 Generator Management Relay

3.1 FACEPLATE INTERFACE

3.1.2 LED INDICATORS
R1 TRIP
R2 AUXILIARY
R3 AUXILIARY
R4 AUXILIARY
R5 ALARM
R6 SERVICE
808732A1.CDR
S3 DIGITAL INPUTS /
key clears the trip/alarm.
RESET
key to scroll through the diagnostic mes-
NEXT
NEXT

3.1.1 DISPLAY

3
key returns the
3-1