SICK MPB10, Operating Instructions Manual

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4.3 Vibration analysis (Index 4474-4588)
The Multi Physics Box monitors the vibration of critical components in the time range
and in the frequency range.
1
2
Figure 4: Vibration analysis
1
Time
2
Frequency
4.3.1 Principle of operation
The sensor detects the acceleration via a MEMS element in the X, Y and Z direction.
For vibration monitoring, the Multi Physics Box does not display raw acceleration values
but rather statistical indication values. These values are calculated block by block in
an adjustable time window. The sensor needs processing time to calculate values in
the frequency range as well as in the time range. No acceleration values are recorded
during this time, as the sensor cannot process any other values.
table 2 indicates the typical processing time in relation to the block size. After process‐
ing, the indication values are updated and a new block is recorded. This process is
shown in
figure 5 . If a manual trigger ( see "Trigger (Index 4474-4475)", page 15 ) is
set, the system waits for the next trigger signal. Likewise, the averaging of blocks (Index
4477, Subindex 5) influences the update rate of the vibration values. Index 4482 can
be used to determine whether updated indication values are available.
2
3 3
4 1
2
t
Figure 5: Vibration block and processing
1
Block 1
2
Process time
3
Available indication values
4
Block 2
4.3.2 Settings for vibration analysis (Index 4477, 4479, 4482, 4531)
The sensor offers the following basic setting options in the vibration analysis:
4
PRODUCT DESCRIPTION
12 O P E R A T I N G I N S T R U C T I O N S | MPB10 8028041/2022-08-16 | SICK
Subject to change without notice