Sel SEL-DTA2, Инструкция по эксплуатации

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2.2
SEL-DTA2 Instruction Manual
Date Code 20020329
Specifications
Display Modes
Display Modes
The following is a description of all SEL-DTA2 display modes, controls,
inputs, and outputs.
The front panel switches control display modes and scrolling. The “SCROLL”
switches repeat if held in the asserted state.
Faults
There are two ways to enter the FAULTS mode.
Press the front panel “FAULTS” switch.
New faults reported by the relay preempt all other display modes and place the
instrument in the FAULTS mode.
Pressing the front panel “FAULTS” switch displays the last two validated
faults reported to the SEL-DTA2 by the relay. Press the “SCROLL” switches
to view the last 30 validated faults. If no faults have been captured since power
up, the instrument displays “FAULT HISTORY EMPTY.”
Display contents are determined by the display window position within the
30-event fault history.
Figure 2.1 illustrates an example fault history, with the
window positioned to display the last two faults (as if a user entered the mode
recently).
Figure 2.1 FAULTS Mode Initial Window Positioning
Pressing the “SCROLL DOWN” switch once changes the display window
position as shown in
Figure 2.2 . View any two faults in the 30-event fault
history using the “SCROLL UP” and “SCROLL DOWN” switches.
Figure 2.2 FAULTS Mode Display Window After Scroll Down
Faults are numbered sequentially from newest to oldest; the latest fault is
assigned the number “1,” oldest faults are discarded as history length exceeds
30 lines. The assigned number appears in display columns 1–2. Columns 5 -
12 and 14 - 25 contain the date and time of the fault, respectively; columns 29
- 31 show fault type; columns 35 - 40 indicate fault location.
BEGINNING OF HISTORY
01 01/02/90 22:33:51.812 1BG 74.580
02 01/02/90 22:33:47.108 1AG 74.430
03 01/02/90 10:23:10.678 1CG 94.450
04 01/02/90 10:11:23.498 1BG 106.220
•
•
•
29 01/01/90 13:44:37.893 1AG 70.290
30 01/01/90 02:22:15.375 1AG 76.780
END OF HISTORY
BEGINNING OF HISTORY
01 01/02/90 22:33:51.812 1BG 74.580
02 01/02/90 22:33:47.108 1AG 74.430
03 01/02/90 10:23:10.678 1CG 94.450
04 01/02/90 10:11:23.498 1BG 106.220
•
•
•
29 01/01/90 13:44:37.893 1AG 70.290
30 01/01/90 02:22:15.375 1AG 76.780
END OF HISTORY
Stored Data
Stored Data