Schweitzer Engineering Laboratories SEL-787 - Figure 4.72 Adding Temperature Measurement Display Points

4.103
Date Code 20081022 Instruction Manual SEL-787 Relay
Protection and Logic Functions
Front-Panel Settings (SET F Command)
=>>SET F TERSE <Enter>
Front Panel
General Settings
DISPLY PTS ENABL (N,1-32) EDP := 4 ? 5 <Enter>
LOCAL BITS ENABL (N,1-32) ELB := 1 ? > <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 := IN101,"TRFR 1 HV BRKR:",CLOSED,OPEN
? <Enter>
DISPLAY POINT DP02 (60 characters)
DP02 := IN102,"TRFR 1 LV BRKR:",CLOSED,OPEN
? <Enter>
DISPLAY POINT DP03 (60 characters)
DP03 := IAV, "IAV CURR {5} A"
? AI301,"HOT SPOT TEMP" <Enter>
DISPLAY POINT DP04 (60 characters)
DP04 := IG_MAG, "GND CURR {5} %"
? AI302,"OIL TEMPERATURE" <Enter>
DISPLAY POINT DP05 (60 characters)
DP05 := IA_MAG, "IA {7.1} A pri"
? AI303,"WINDING TEMP" <Enter>
Save changes (Y,N)? Y <Enter>
Settings Saved
=>>
Figure 4.72 Adding Temperature Measurement Display Points
Rotating Display
With more than two display points enabled, the relay scrolls through all
enabled display points, thereby forming a rotating display, as shown in
Figure 4.73.
Figure 4.73 Rotating Display
To change the temperature units to more descriptive engineering units, enter
the desired units with the AIxxxEU (e.g., AI302EU) setting.
Local Bits
Local bits are variables (LBnn, where nn means 01 through 32) that are
controlled from front-panel pushbuttons. Use local bits to replace traditional
panel switches. Each local bit requires three of the following four settings,
using a maximum of 14 valid characters for the NLBnn setting, and a
maximum seven valid characters (0–9, A–Z, -, /, ., space) for the remainder:
➤ NLBnn: Name the switch (normally the function that the
switch performs, such as SUPERV SW) that will appear on the
LCD display.
TRFR 1 HV BRKR:=
TRFR 1 LV BRKR:=
Screen 1
HOT SPOT TEMP
xxx.xx degrees C
Screen 2
OIL TEMPERATURE
0.031 mA
Screen 3
WINDING TEMP
0.037 mA
Screen 4
TRFR 1 HV BRKR:=
TRFR 1 LV BRKR:=
Screen 1