Tyco Electronics Galaxy SC Controller J85501F-1
Issue 13 February 2001 Feature Descriptions 7 - 54
Basic Statistics Basic statistics are stored for every measured value, read at the
instantaneous data rate. The items stored for basic statistics are:
Highest Hourly Average Values: The three highest hourly averages are
kept in memory and updated each hour. Collection of data begins when
the first valid hourly average is available.
Highest Hourly Maximum: At the change of each hour, the highest
instantaneous value for the previous hour is compared with the three
highest hourly maximums stored in memory. If it is greater than any of
those, the lowest maximum value will be deleted and the new value
included in the three highest maximum values.
Lowest Hourly Minimum: At the change of each hour, the lowest
instantaneous value for the previous hour is compared with the three
lowest hourly minimum values stored in memory. If it is smaller than
any of those, the highest will be deleted and the new value included.
Trend Statistics Trend statistics are stored for the plant load and up to 8 user configurable
measured value channels. The items stored for trend statistics include:
Daily High and Low: The instantaneous lowest and highest value
readings, for each of the previous 16 days.
Daily Maximum Hourly Average: The highest one-hour average values,
for each of the previous 32 days.
Monthly Average: The monthly average of the daily maximum
one-hour averages, for each of the previous 13 months.
Busy Hour
Statistics
Busy hour statistics are stored for the plant load and up to 4 user
configurable measured value channels. For each busy hour statistics
item being monitored, 24 consecutive hourly averages are collected
beginning at the user specified time and date. In addition, the highest
instantaneous value occurring within that 24 hour period is also stored.
This feature can be used to determine the busy hour(s) of any selected
24-hour period.
Battery Discharge
Statistics
Beginning one minute after a Battery Discharge alarm occurs, plant
voltage and current are sampled at 5 second intervals. Whenever the
plant voltage drops by more than 250mV on a 48-volt plant or 125mV
on a 24-volt plant, the battery on discharge series entry number, time,
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