Delphin ProfiMessage, Hardware Manual

Page: 259 / 322

Profi Message
9.2.5 Characteristic values
Vibration signal recordings are initially saved to a buffer within the I/O module.
Options are available to then perform an FFT analysis or to compute a frequency
spectrum. It is then possible to calculate various characteristic vibration values
from the vibration signal and/or the frequency spectrum.
One or more additional characteristic value channels are available for each ana-
logue input channel. These then deliver characteristic values for vibration data
(e.g. root mean square, a spectrum's peak amplitude etc.).
Properties
l
1 to 30 characteristic value channels can be set up/created separately (for
each analogue input)
l
Simple configuration using selection lists
l
Automatic assigning to source channel
Characteristic values
No.
Characteristic
value
Type Note
1
Peak-to-peak
value
T Difference between maximum and minimum
2 Artihm. Average T or DC component
3
True root mean
square (TRMS)
T —
4
Frequency of the
main vibration
F Frequency of the spectrum's peak amplitude
5
Amplitude of the
main vibration
F Spectrum's peak amplitude
6 Rotation speed T Frequency/rotation speed
7
Phase of the main
vibration
T, F —
8
Amplitude of the
1X vibration
F
Amplitude of the single rotational and syn-
chronous vibration components
9
Phase of the 1X
vibration
T, F
Phase of the single rotational and syn-
chronous vibration components
10
Amplitude of the
2X vibration
F
Amplitude of the double rotational and syn-
chronous vibration components
259
Delphin Technology AG
Dezember 2015
Profi Message Manual