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Vibration - Balluff BOS R254K-UUI-RE10-S4 Konfiguration

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BOS R254K-UUI-RE10-S4
Photoelectric Sensors
5
Secondary Device Functions (continued)
5.13

Vibration

5.13.1 Description
There are two important vibration values that we should
regularly measure on our machines:
Total speed in [mm/s], which indicates the general
machine state (lower frequency range)
Total acceleration in [g], which indicates the bearing
state (higher frequency range)
This secondary sensor function allows the vibration velocity
to be measured as a physical property of a mechanical
system. The primary goal is to detect significant changes
or deviations of the vibration.
5.13.2 Mathematics/Algorithm
The example in Tab. 5-62 shows a typical application of
vibration monitoring.
Application example (with vibration
frequency spectrum) as input
Tab. 5-62: Classic application – Detection of vibration changes
78
english
Primary characteristics:
Output Value
Unit
Vibration frequency
range
Measurement
range
1)
Detectable range of
the vibration
acceleration
Measurement error
The vibration velocity range is frequency-dependent. The specified
1)
value is the theoretical maximum within this frequency range at an
acceleration of 16 g.
Tab. 5-61: Vibration detection – Primary characteristics
Total result of the
Description
measurement as
output
Vibration level v-RMS
A classic application is the detection of the
[mm/s]
wear of a bearing.
The spectrum and the amplitude of the
2.3
vibration change.
A more complex mechanical system (such
4.5
as a production line) returns more complex
measurement results (spectrum).
The output value is a total value for simple
7.1
handling.
Vibration Level
mm/s
10...1000 Hz
0...1770 mm/s
0...16 g
±10 %

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