Version 2.02 15.05.2007 Function of VS 3000
48
3.37 Archiving of operating data
3.37.1 Compressor/fan operating hours
Total running time of compressors/fans is measured at 30-second intervals and stored in memory backed up
against data loss in power failure. Time is s hown in hours. Operating hours can also be programmed for re-
placement of compressors/fans or the controller (Menu 6-1).
3.37.2 Daily run times and compressor starts
In addition to total operating hours, the daily run time, compressor starts and activity (utilization) of the com-
pressor pack are recorded. The cycle time starts at midnight and the current status is shown in hours and min-
utes. This data is additionally stored in memory over a period of 32 days for use in evaluating operation of the
compressor pack.
3.37.3 Compressor pack activity/utilization
Activity is calculated by the following formula:
Activity =
L
[
n ⋅
(
T
1
− T
0
)
]
Activity : Activity (utilization) of compressor pack
L : Total of all compressor run times
n : Number of compressors installed
T
1
: Current time
T
0
: Day change
The current status is shown as a percentage.
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