Liebert 30-130kVA - Manual (Page 73)

Operation
65
BCM DATA DEFINITIONS / STORAGE
At the start of every discharge cycle, Time and Date are recorded along with Battery Compartment
Temperature in degrees C. While the cycle is in progress, the following data are stored: Lowest DC
Bus Voltage, Battery KW Hours, and Highest Battery Discharge AMPS. At the end of the cycle. all of
these parameters including Cycle Duration (in seconds), and Summary data including Accumulated
Number Of Cycles, Accumulated Battery Amp Hours, and Accumulated Battery KW hours are stored.
A total of 132 cycles are saved in a circular buffer.
BCM ALARM NOTIFICATION
When the number of cycles exceeds 128, an alarm message will be displayed to alert the user (local
and remote) that the end of buffer is near. The alarm messaged is defined as “BATT CYCLE BUFFER
FULL”. The alarm is kept active for a minimum of 30 seconds to allow the software to download the
128 cycles to the terminal port and also dial out with this alarm, providing the modem option is
installed and enabled. The cycle storage continues to 132. The 133rd event will override the first
event in the buffer. But the previous cycles will not be destroyed until overwritten with future BMC
cycle data.
REMOTE MONITORING
The information within each of the time buckets and summary status page can be retrieved via the
Terminal and Modem ports.
See 3.5.1 - RS-232 Port: Local Reporting Terminal for a list of commands used to retrieve Service
Terminal Information.
Battery Time Low Warning
The Battery Time Low Warning Feature alerts the Operator to the battery time remaining in min-
utes. The Operator can set the warning time by navigating from the CONFIGURATION Screen to
USER SETTINGS, Page 2. This screen is illustrated below.
Figure 101User settings, page 2
USER SETTINGS
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BATT. TIME (T 1) AT 100% 15
BATT. TIME (T 2) AT 50% 45
BATT. EOD LOWER SET POINT 384
BATT. EOD UPPER SET POINT 427
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