GE Multilin 489 User Manual

CHAPTER 4: INTERFACES
489 GENERATOR MANAGEMENT RELAY – INSTRUCTION MANUAL 4–5
The MESSAGE T and MESSAGE S keys scroll through any active conditions in the relay.
Diagnostic messages are displayed indicating the state of protection and monitoring
elements that are picked up, operating, or latched. When the Message LED is on, there are
messages to be viewed with the
MENU key by selecting target messages as described
earlier.
Entering Alphanumeric Text
Text setpoints have data values that are fixed in length but user-defined in character. They
may be comprised of upper case letters, lower case letters, numerals, and a selection of
special characters. The editing and storing of a text value is accomplished with the use of
the decimal [.],
VA L U E , and ENTER keys.
Z Move to message
S3 DIGITAL INPUTS ZV GENERAL INPUT A Z ASSIGN
DIGITAL INPUT
, and scrolling with the VA L U E keys, select “Input 1”.
The relay will display the following message:
Z Press the
MESSAGE T key to view the INPUT NAME setpoint.
The name of this user-defined input will be changed in this example
from the generic “Input A” to something more descriptive.
If an application is to be using the relay as a station monitor, it is more informative to
rename this input “Stn. Monitor”.
Z Press the decimal [.] to enter the text editing mode.
The first character will appear underlined as follows:
Z Press the
VA L U E keys until the character “S” is displayed in the first
position.
Z Press the decimal [.] key to store the character and advance the cursor to
the next position.
Z Change the second character to a “t” in the same manner.
Z Continue entering characters in this way until all characters of the text
“Stn. Monitor” are entered.
Note that a space is selected like a character.
If a character is entered incorrectly, press the decimal [.] key repeatedly
until the cursor returns to the position of the error. Re-enter the character
as required.
Z Once complete, press the
ENTER key to remove the solid cursor and
view the result.
Once a character is entered, by pressing the
ENTER key, it is
automatically saved in Flash Memory, as a new setpoint.
ASSIGN DIGITAL
INPUT: Input 1
INPUT NAME:
I
nput A
INPUT NAME:
Stn. Monitor
Courtesy of NationalSwitchgear.com

GE Multilin 489 Specifications

General

Brand	GE
Model	Multilin 489
Category	Relays
Language	English