GE UR Series L90, Instruction Manual

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GE Multilin L90 Line Current Differential System 4-23
4 HUMAN INTERFACES 4.3 FACEPLATE INTERFACE
4
The following items are required to customize the L90 display module:
• Black and white or color printer (color preferred)
• Microsoft Word 97 or later software for editing the template
• 1 each of: 8.5" x 11" white paper, exacto knife, ruler, custom display module (GE Multilin Part Number: 1516-0069),
and a custom module cover (GE Multilin Part Number: 1502-0015)
The following procedure describes how to customize the L90 display module:
1. Open the LED panel customization template with Microsoft Word. Add text in places of the LED x text placeholders on
the template(s). Delete unused place holders as required.
2. When complete, save the Word file to your computer for future use.
3. Print the template(s) to a local printer.
4. From the printout, cut-out the Background Template from the three windows, using the cropmarks as a guide.
5. Put the Background Template on top of the custom display module (GE Multilin Part Number: 1513-0069) and snap the
clear custom module cover (GE Multilin Part Number: 1502-0015) over it and the templates.
4.3.4 DISPLAY
All messages are displayed on a backlit liquid crystal display (LCD) to make them visible under poor lighting conditions.
While the keypad and display are not actively being used, the display defaults to user-defined messages. Any high-priority
event-driven message automatically overrides the default message and appears on the display.
4.3.5 KEYPAD
Display messages are organized into pages under the following headings: actual values, settings, commands, and targets.
The MENU key navigates through these pages. Each heading page is divided further into logical subgroups.
The MESSAGE keys navigate through the subgroups. The VALUE keys increment or decrement numerical setting values
when in programming mode. These keys also scroll through alphanumeric values in the text edit mode. Alternatively, val-
ues can be entered with the numeric keypad.
The decimal key initiates and advances to the next character in text edit mode or enters a decimal point.
The HELP key can be pressed at any time for context-sensitive help messages.
The ENTER key stores altered setting values.
4.3.6 BREAKER CONTROL
a) INTRODUCTION
The L90 can interface with associated circuit breakers. In many cases the application monitors the state of the breaker, that
can be presented on faceplate LEDs, along with a breaker trouble indication. Breaker operations can be manually initiated
from faceplate keypad or automatically initiated from a FlexLogic operand. A setting is provided to assign names to each
breaker; this user-assigned name is used for the display of related flash messages. These features are provided for two
breakers; the user can use only those portions of the design relevant to a single breaker, which must be breaker 1.
For the following discussion it is assumed the
SETTINGS

SYSTEM SETUP

BREAKERS

BREAKER 1(2)

BREAKER
FUNCTION
setting is "Enabled" for each breaker.
b) CONTROL MODE SELECTION AND MONITORING
Installations can require that a breaker is operated in the three-pole only mode (3-pole), or in the one and three-pole (1-
pole) mode, selected by setting. If the mode is selected as three-pole, a single input tracks the breaker open or closed posi-
tion. If the mode is selected as one-pole, all three breaker pole states must be input to the relay. These inputs must be in
agreement to indicate the position of the breaker.
For the following discussion it is assumed the
SETTINGS

SYSTEM SETUP

BREAKERS

BREAKER 1(2)

BREAKER
1(2) PUSH BUTTON CONTROL
setting is “Enabled” for each breaker.