Liebert 30-130kVA - Manual (Page 71)

Operation
63
Figure 97 Battery cycle monitor screen
The second page, accessed by selecting NEXT (See Figure 98), allows the Operator to view the Sum-
mary Page and to erase the BCM time bucket data permanently from the non-volatile storage. (This
action requires the system password.) The Operator can also erase the summary information as well,
providing he inputs the proper password. However, this is not recommended for anyone except factory
technicians or Liebert Service Engineers.
Figure 98 Battery cycle monitor screen, page 2
DISCHARGE CYCLES
The Discharge Cycles Screens are accessed from the Battery Cycle Monitor Screen.
Each of the four buckets will have a format as illustrated in Figure 99 showing the 0-30 seconds dis-
charge cycles. The ID numbers are stamped in the order of occurrence.
For example, assume that the following four discharge cycles have occurred:
1 - On 03/09/01, there was discharge cycle that lasted 25 seconds.
2 - On 04/12/01, there was discharge cycle that lasted 96 seconds.
3 - On 04//25/01, there was discharge cycle that lasted 42 seconds.
4 - On 04/26/01, there was discharge cycle that lasted 21 seconds.
The 0-30 bucket should display event IDs 1 and 4, with #4 shown as the most recent discharge event.
The 31-90 bucket displays event #3, and the 91-240 bucket displays event #2.
The maximum field length for seconds is 99999 (5 digits) which equates to 27.78 hours. DC Bus volts
has xxx (3 digits).
FORMAT—Maximum discharge 1 is displayed in xx.x format (i.e. 65.5, 99.9 max) when the discharge
current is 6553 (unsigned integer / 10) for each cycle. The field length for KWH is 5. When less than
1000 KWH, it is displayed in xxx.x format (i.e. 340.8, 999.9 max). If it exceeds 999.9, the decimal point
is removed and the format becomes xxxx. The maximum displayed KWH is 6553 for each cycle. The
displayed range for battery temperature that can be displayed is from 0 to 126°C (product specifica-
tions call for the operating range of 0-40°C.) Any readings outside that range will be displayed as *.
To view the complete list in the event, use the UP and DOWN selections to scroll the page up or down.
BCM DISABLE
BATTERY CYCLE MONITOR
EXIT NEXT
0 - 30 SECONDS DISCHARGE CYCLES 2
31 - 90 SECONDS DISCHARGE CYCLES 1
91 - 240 SECONDS DISCHARGE CYCLES 1
OVER 240 SECONDS DISCHARGE CYCLES 0
SUMMARY PAGE
CLEAR BCM YES / NO
CLEAR SUMMARY YES / NO
BATTERY CYCLE MONITOR
EXIT PREV