Annunciator Panel; Annunciator Operation - GE D90 Plus Instruction Manual

ANNUNCIATOR PANEL

Annunciator panel

Annunciator operation

548
The annunciator is a color, TFT panel located that emulates the functionality found in a
conventional annunciator unit. The annunciator provides indications on the status of
system alarm points and actual values. It also displays self-test messages and product
information for the unit.
The annunciator supports three types of alarms: self-reset, latched, and acknowledgeable.
Each location in an annunciator display page can be configured to be one of the three
alarm types and can also display an optional metered value. The value of each self-reset
alarm is refreshed approximately once every half second.
Alarms are organized in a table and numbered increasing from left to right horizontally and
then top to bottom. The first alarm in the top left corner of the first page is denoted as
indicator 1 by the EnerVista UR
the bottom right alarm number on the previous page plus one. Up to 288 individual alarms
or metered values can be configured.
Each location in the alarm table can be configured as an alarm only, metering only, or
mixed content. With the exception of metering only table entries, a FlexLogic™ alarm input
operand is required for each alarm table location. Selecting an operand of "None" hides
the entry from view.
Alarms can display up to three lines of text using a specified foreground and background
color. A configured metering value will replace the specified line of text. A typical
annunciator display is shown below.
Figure 493: Typical annunciator display
There are three control buttons at the bottom of the display.
• The Next Page button navigates through the configured alarm, self-test and product
information pages. It should be noted that pages that contain no configured alarms
are not displayed.
• The Next Alarm button navigates horizontally though the current alarms that are
active, from left-to-right, starting with the first row of alarms. A border is drawn
around the current alarm.
• The Ack/Reset button is used to acknowledge alarms or reset latched and
acknowledgeable alarms that are in the ringback state.
The annunciator alarm sequence conforms to ISA 18.1-1979 (R1992) standard, type R.
Plus
Setup software. The top left location of the next page is
PLUS
D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 12: LOCAL INTERFACE