4.10
SEL-400 Series Relays Instruction Manual Date Code 20171006
Front-Panel Operations
Front-Panel Layout
Display Points
You can display messages on the relay front-panel LCD that indicate conditions
in the power system. The relay uses display points to place these messages on the
LCD.
Figure 4.12 shows a sample display points screen. Display points can show the
status of Relay Word bits or display the value of analog quantities. The relay has
96 possible display points; Table 4.3 and Table 4 .4 list the display points settings.
The relay updates the display points data once per second if you are viewing the
display points in manual-scrolling mode; in autoscrolling mode the relay updates
the display points information each time the screen appears in the
ROTATING DIS-
PLAY
sequence.
To enable a display point, enter the display point settings listed in Table 4.3 or
Table 4.4. All display points occupy one, and only one, line on the display at all
times. The height of the line is determined by the “Text Size” setting parameter.
Display points of single-line height span one screen in total width. Display points
of double-line height span two screens in total width. You can use multiple dis-
play points to simulate multiple lines.
Use the following syntax to display the given Relay Word bit exactly as seen in
the navigational menu (name and value).
DPxx := Name
Use the following syntax to display the given Relay Word bit as seen in the navi-
gational menu, replacing the name of the value with the given alias string. The
text size determines if the display will be in single font or double font. If the text
size is empty, the display will be in single font.
DPxx := Name, “Alias”, “Text Size”
Example 4.1 Creating an Alarm Point (Continued)
Figure 4.11 Alarm Points Data Loss Screen
##SER DATA LOSS##
ALARM POINTS
Press to acknldge
Figure 4.12 Sample Display Points Screen
Circuit Breaker 1
--Closed--
DISPLAY POINTS
Circuit BK1 SF6 Gas
--Alarm--
Circuit Breaker 2
A PH= 119.6 A pri
SF6 ALARM
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