C) output relay led indicators, 3 rs232 program port, 4 keypad – GE 489 User Manual
Page 34: A) description, B) entering alphanumeric text, Rs232 program port -2, Keypad -2
3-2
489 Generator Management Relay
GE Multilin
3.1 FACEPLATE INTERFACE
3 USER INTERFACES
3
•
VT FAILURE: Indicates that the VT fuse failure alarm is picked up.
•
BREAKER FAILURE: Indicates that the breaker failure or trip coil monitor alarm is picked up.
c) OUTPUT RELAY LED INDICATORS
•
R1 TRIP: R1 Trip relay has operated (energized).
•
R2 AUXILIARY: R2 Auxiliary relay has operated (energized).
•
R3 AUXILIARY: R3 Auxiliary relay has operated (energized).
•
R4 AUXILIARY: R4 Auxiliary relay has operated (energized).
•
R5 ALARM: R5 Alarm relay has operated (energized).
•
R6 SERVICE: R6 Service relay has operated (de-energized, R6 is fail-safe, normally energized).
3.1.3 RS232 PROGRAM PORT
This port is intended for connection to a portable PC. Setpoint files may be created at any location and downloaded through
this port with the 489PC software. Local interrogation of setpoints and actual values is also possible. New firmware may be
downloaded to the 489 flash memory through this port. Upgrading the relay firmware does not require a hardware
EEPROM change.
3.1.4 KEYPAD
a) DESCRIPTION
The 489 messages are organized into pages under the headings
SETPOINTS
and
ACTUAL VALUES
. The
key navi-
gates through the programmable parameters (setpoints) page headers. The
key navigates through the measured
parameters (actual values) page headers.
•
Each page is divided into logical subgroups of messages. The
and
keys are used to navigate
through these subgroups.
•
The
key is dual purpose. It is used to enter the subgroups or store altered setpoint values.
•
The
key is also dual purpose. It may be used to exit the subgroups or to return an altered setpoint to its original
value before it has been stored.
•
The
and
keys scroll through variables in setpoint programming mode and will increment/decrement
numerical setpoint values. These values may also be entered with the numeric keypad.
•
The
key may be pressed at any time for context sensitive help messages.
Figure 3–2: 489 KEYPAD
b) ENTERING ALPHANUMERIC TEXT
There are several places where custom text messages may be programmed for specific applications. One example is the
MESSAGE SCRATCHPAD
. The following example demonstrates how to enter alphanumeric text messages. To enter the text,
"Generator#1", perform the following procedure:
1.
Press the decimal key [.] to enter text edit mode.
SETPOINT
ACTUAL
MESSAGE
MESSAGE
ENTER
ESCAPE
VALUE
VALUE
HELP
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