Schweitzer Engineering Laboratories SEL-751 - Table 4.97 Example Settings and Displays; Table 4.96 Entry in the Name String and the Alias Strings; Figure 4.120 Front-Panel Display for an Entry in (A) Boolean Name and Alias Strings and (B) Analog Name and User Text and Formatting Strings; Figure 4.121 Front-Panel Display for an Entry in (A) Boolean Name and Alias Strings and (B) Analog Name, User Text and Formatting Strings, and Engineering Units

4.200
SEL-751 Relay Instruction Manual Date Code 20170927
Protection and Logic Functions
Front-Panel Settings (SET F Command)
Figure 4.120 shows the front-panel display for the entry in Table 4.96. Input
IN101 is deasserted in this display (0), and the display changes to
INPUT
IN101=1
when Input IN101 asserts.
Figure 4.120 Front-Panel Display for an Entry in (a) Boolean Name and Alias
Strings and (b)AnalogNameandUserTextandFormattingStrings
If the engineering units are set, then the front-panel display shows the engi-
neering units. For example, in the Group setting example, we set AI301EU to
degrees C. With this setting, the front-panel display looks as shown in
Figure 4.121.
Figure 4.121 Front-Panel Display for an Entry in (a) Boolean Name and Alias
Strings and (b) Analog Name, User Text and Formatting Strings,
and Engineering Units
For fixed text, enter a 1 in the Name String, then enter the fixed text as the
alias text. For example, to display the word DEFAULT and SETTINGS on two
different lines, use a display point for each word, i.e., DP01 = 1,“DEFAULT”
and DP02 = 1,“SETTINGS.” Table 4.97 shows other options and front-panel
displays for the User Text and Formatting settings.
Following is an example of an application of analog settings. Assume we also
want to know the hot-spot temperature, oil temperature, and winding tempera-
ture of the transformer at a certain installation. To measure these temperatures,
Table 4.96 Entry in the Name String and the Alias Strings
Name Alias Set String Clear String
IN101 INPUT IN101 — —
AI301 TEMPERATURE — —
Table 4.97 Example Settings and Displays
Example Display Point Setting Value Example Display
AI301,"TEMP {4} deg C" TEMP 1234 deg C
AI301,"TEMP = {4.1}" TEMP := xx.x
AI301,"TEMP = {5}" TEMP := 1230
AI301,"TEMP = {4.2,0.001} C" TEMP := 1.23 C
AI301,"TEMP HV HS1 = {4,1000}" TEMP HV HS1 =1234
1,{} Empty line
1,“Fixed Text” Fixed Text
0 Hides the display point
INPUT IN101:=0
TEMPERATURE:
0.024 mA
(a) Boolean
(b) Analog
INPUT IN101:=0
TEMPERATURE:
0.024 degree C
(a) Boolean
(b) Analog