Display; Led Indicators - GE 489 Instruction Manual

3.1 OVERVIEW
All messages appear on a 40-character vacuum fluorescent display for visibility under poor lighting conditions. 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 status messages. Any trip or alarm automatically overrides the default mes-
sages and is immediately displayed.
Press the key for 2 seconds to initiate a lamp test.
HELP
3
There are three groups of LED indicators: 489 STATUS, GENERATOR STATUS, and OUTPUT RELAYS.
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: Flashes when there is any activity on the RS485 communications port. Remains on continuously
if incoming data is valid and intended for the slave address programmed in the relay.
• AUXILIARY RS485: Flashes when there is any activity on the communications port. 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.
3-2
Figure 3–2: 489 DISPLAY
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 3–3: 489 LED INDICATORS
setpoint to "Group 2".
489 Generator Management Relay

3.1.3 LED INDICATORS

R1 TRIP
R2 AUXILIARY
R3 AUXILIARY
R4 AUXILIARY
R5 ALARM
R6 SERVICE
S3 DIGITAL INPUTS /
key clears the trip/alarm.
RESET
NEXT key to scroll through the diagnostic mes-
NEXT
GE Power Management
3 OPERATION

3.1.2 DISPLAY

key returns the