Online database diagramFigure 9-1:
9.1.1 Collection criteria
Analysis
Parameter
(AP) Set
Defines a particular way to collect spectral and waveform data, and
specifies:
• the number of lines of resolution.
• any averaging modes and windowing.
• whether to be order-based or frequency-based.
• what FMax to use.
• what parameters are to be collected.
Alarm Limits
(AL) Set
Each AL Set is associated with a specific AP Set. You may define multiple
AL Sets for any given AP Set to accommodate changing monitoring
conditions. The alarm limit definition determines when alarms occur,
data is stored, and output relays are set.
Predicate A collection predicate is an expression that compares the conditions of
vibration levels, input relay states, or machine speeds to determine
when data is collected and Transient auto-archives are extracted.
9.1.2 Logical hierarchy
Area A user-defined grouping of equipment. An area often corresponds to
a building or section of a process line within a plant.
Data collection and analysis
76 MHM-97125-PBF-EN, R0
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