Schweitzer Engineering Laboratories SEL-700G Series, Instruction Manual

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4.226
SEL-700G Relay Instruction Manual Date Code 20170814
Protection and Logic Functions
Front-Panel Settings (SET F Command)
Figure 4.149 shows the display when both HV and LV breakers are open (both
IN101 and IN102 deasserted). Figure 4.150 shows the display when the HV
breaker is closed, and the LV breaker is open (IN101 asserted, but IN102 still
deasserted).
Figure 4.149 Front-Panel Display—Both HV and LV Breakers Open
Figure 4.150 Front-Panel Display—HV Breaker Closed, LV Breaker Open
Name String, Alias String, and Either Set String or Clear String Only
The following discusses omission of the Clear String; omission of the Set
String gives similar results. Omitting the Clear String causes the relay to only show
display points in the set state, when you use the SET F command, as follows:
When the Relay Word bit IN101 deasserts, the relay removes the complete
line with the omitted Clear String (TRFR 1 HV BRKR). When both breakers
are closed, the relay has the set state information for both HV and LV
breakers, and the relay displays the information as shown in Figure 4.151.
When the HV breaker opens (LV breaker is still closed), the relay removes the
line containing the HV breaker information because the Clear String
information was omitted. Because the line containing the HV breaker
information is removed, the relay now displays the LV breaker information on
the top line, as shown in Figure 4.152.
Figure 4.151 Front-Panel Display—Both HV and LV Breakers Closed
=>> SET F TERSE <Enter>
Front Panel
General Settings
DISPLY PTS ENABL (N,1-32) EDP := 4 ? >
<Enter>
Target LED Set
TRIP LATCH T_LED (Y,N) T01LEDL := Y ? >
<Enter>
Display Point Settings (maximum 60 characters):
(Boolean): Relay Word Bit Name, "Alias", "Set String", "Clear String"
(Analog) : Analog Quantity Name, "User Text and Formatting"
DISPLAY POINT DP01 (60 characters)
DP01 := RID,"{16}"
? IN101,"TRFR 1 HV BRKR:",CLOSED,OPEN <Enter>
DISPLAY POINT DP02 (60 characters)
DP02 := TID,"{16}"
? IN102,"TRFR 1 LV BRKR:",CLOSED,OPEN <Enter>
DISPLAY POINT DP03 (60 characters)
DP03 := IAV, "I MOTOR {6} A"
?
END <Enter>
Save changes (Y,N)? Y <Enter>
Settings Saved
=>>
Figure 4.148 Display Point Settings
TRFR 1 HV BRKR:= OPEN
TRFR 1 LV BRKR:= OPEN
TRFR 1 HV BRKR:= CLOSED
TRFR 1 LV BRKR:= OPEN
DP01 := RID, “{16}”
? IN101,"TRFR 1 HV BRKR:",CLOSED
<Enter>
TRFR 1 HV BRKR:= CLOSED
TRFR 1 LV BRKR:= CLOSED