Figure 25 History Status Report Screens - Liebert 1000kVA Operation & Maintenance Manual

History Status
The History Status screen displays 64 frames, of 4 milliseconds each, from the Present Status screen.
Note that the values for output volts and amps are updated once each millisecond. Alarms are listed
in the sequence they occurred, within 1 millisecond resolution. The frames are stored in a buffer (a
computer information storage technique). The buffer stores the frames in a first in, first out sequence.
As a new frame enters the buffer the oldest one is released.
When a designated fault occurs (see list below), the buffer stores information for the next 24 frames
and then freezes (stops gathering information). At that time, the History Status screen contains
40 frames before the fault, the frame when the fault occurred and 23 frames after the fault. This
64-page report is a very useful diagnostic tool for the operator or Liebert Global Services. Use the Up
and Down pads to view the screens.

Figure 25 History status report screens

HISTORY STATUS HISTORY STATUS
ORDER - 000000 ORDER - 000000
**** ACTIVE ALARMS **** Output Ov-volts **** ACTIVE ALARMS **** Batt Discharging
OUTPUT VOLTS OUTPUT VOLTS
OUTPUT AMPS OUTPUT AMPS
OUTPUT FREQUENCY OUTPUT FREQUENCY
OUTPUT VOLTS LOAD KVA
BYPASS VOLTS OUTPUT AMPS
BATTERY VOLTS
OUTPUT VOLTS
OUPUT AMPS
BATTERY AMPS
INPUT VOLTS
INPUT AMPS
OUPUT VOLTS
OUTPUT AMPS
LOAD KVA
HISTORY STATUS MODULE-0
ORDER - 000000 SITE ID - 00000
**** ACTIVE ALARMS **** Output Ov-volts
A
OUTPUT VOLTS 480
OUTPUT AMPS 420
OUTPUT FREQUENCY
LOAD KVA
BYPASS VOLTS 480
MODULE-0 MODULE-0
SITE ID - 00000 SITE ID - 00000
A A B B
380 480 380 480
530 325 325 530
480 480
325 380 380 325
480 480
325 325
0 0
0 0
480 480
325 325
04/10/97 16:49:21
SITE TAG - 0000000
DC
B C LOAD HERTZ
480 480
420 420
349
480 480
UP :
DOWN :
SELECT :
04/10/97 01/17/98 16:49:21 11:21:59
SITE TAG - 0000000 SITE TAG - 0000000
Low Batt Warning
C C DC DC LOAD LOAD
HERTZ HERTZ
380 480
530 325
60.0 50.0
480 349
325 380
390
480
325
-645
0
0
UP : UP :
480
DOWN : DOWN :
325
270
SELECT : SELECT :
40
FRAME 36
TIME
60.0
NEXT FRAME
PREVIOUS FRAME
EXIT
FRAME 36 FRAME 100
TIME TIME
0:01
NEXT FRAME NEXT FRAME
PREVIOUS FRAME PREVIOUS FRAME
EXIT EXIT
Operation