Interfaces; Front Panel Interface Description; Display; Led Indicators - GE 750 Instruction Manual

Front Panel Interface

Description

Display

Description
GE Multilin

4 Interfaces

Front Panel Interface
The front panel provides local operator interface with a liquid crystal display, LED
status indicators, control keys, and program port. The display and status indicators
update alarm and status information automatically. The control keys are used to
select the appropriate message for entering setpoints or displaying measured
values. The RS232 program port is also provided for connection with a computer
running the EnerVista 750/760 Setup software.
The 40-character liquid crystal display (LCD) allows visibility under varied lighting
conditions. When the keypad and display are not being used, system information is
displayed by scrolling through a maximum of 30 user-defined default messages.
These default messages appear only after a user-defined period of inactivity.
Pressing any key during default message scrolling returns the display to the last
message shown before the default messages appeared. Any trip, alarm, or start
block is displayed immediately, automatically overriding the default messages.

LED Indicators

The front panel indicators are grouped into three columns. The 750/760 Status
column indicates the state of the relay; the System Status column indicates the
state of the breaker and the system; and the Output Status column indicates the
state of the output relays. These LED indicators can be tested by and holding the
HELP key for about one second when no trips or alarms are active. As shown below,
the color of each indicator conveys its importance.
G = Green: General Condition
A = Amber: Alert Condition
R = Red: Serious Alarm or Important Status
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750/760
Feeder Management Relay
4–1