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Display; Keypad; Breaker Control - GE L60 Instruction Manual

Line phase comparison system, ur series.
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4 HUMAN INTERFACES
4.
Slide the new user-programmable pushbutton label inside the pocket until the text is properly aligned with the buttons,
as shown below.
All messages are displayed on a 2 × 20 backlit liquid crystal display (LCD) to make them visible under poor lighting condi-
tions. While the keypad and display are not actively being used, the display will default to user-defined messages. Any high
priority event driven message will automatically override the default message and appear on the display.
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 broken down further into logical subgroups.
The MESSAGE keys navigate through the subgroups. The VALUE keys scroll increment or decrement numerical setting
values when in programming mode. These keys also scroll through alphanumeric values in the text edit mode. Alterna-
tively, values may also be entered with the numeric keypad.
The decimal key initiates and advance to the next character in text edit mode or enters a decimal point. The HELP key may
be pressed at any time for context sensitive help messages. The ENTER key stores altered setting values.
a) INTRODUCTION
The L60 can interface with associated circuit breakers. In many cases the application monitors the state of the breaker,
which 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 may 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
setting is "Enabled" for each breaker.
FUNCTION
b) CONTROL MODE SELECTION AND MONITORING
Installations may 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.
GE Multilin

SETTINGS
SYSTEM SETUP
L60 Line Phase Comparison System
4.3 FACEPLATE INTERFACE

4.3.4 DISPLAY

4.3.6 BREAKER CONTROL


BREAKERS
BREAKER 1(2)
4

4.3.5 KEYPAD

BREAKER
4-23

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