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Profi
Message
9.2.5.7
"Phase of main vibration" characteristic value
Phase angle measurement is useful only for low fre-
quencies/rotation speeds. The evaluation procedure
(see below) shows why. Further information on phase
angle definition and on measurement precision etc. is
available under
This characteristic value can be determined only when
a cyclical digital pulse is connected to a digital input/-
counter (e.g. the square wave pulse of a rotating
shaft). This signal delivers a stable base frequency fn
as well as a phase reference or trigger signal.
The DSP normalizes the time signal (internally, hidden) to an integral multiple of
the basic frequency fn.
Using the frequency spectrum associated with the line index fn, the DSP determ-
ines the line/vibration component's phase angle 0 … 360°.
9.2.5.8
"Amplitude of the 1X/2X/3X/xX vibration" characteristic value
This characteristic value can be determined only when
a cyclical digital pulse is connected to a digital input/-
counter. This signal delivers the stable basic frequency
fn.
265
Delphin Technology AG
Dezember 2015
Profi
Message Manual
Содержание ProfiMessage
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Страница 31: ...ProfiMessage 3 5 4 ADIT 31 Delphin Technology AG Dezember 2015 ProfiMessage Manual ...
Страница 32: ...ProfiMessage 3 5 5 ADVT 3 5 6 AMDT 32 Delphin Technology AG Dezember 2015 ProfiMessage Manual ...
Страница 33: ...ProfiMessage 3 5 7 DIOT 3 5 8 IOIT 33 Delphin Technology AG Dezember 2015 ProfiMessage Manual ...
Страница 234: ...ProfiMessage Block diagram for an analogue input signal 234 Delphin Technology AG Dezember 2015 ProfiMessage Manual ...
Страница 312: ...ProfiMessage 11 Appendix 11 1 ISO 9001 certificate 312 Delphin Technology AG Dezember 2015 ProfiMessage Manual ...
Страница 313: ...ProfiMessage 11 2 EC declaration on conformity 313 Delphin Technology AG Dezember 2015 ProfiMessage Manual ...
Страница 314: ...ProfiMessage 314 Delphin Technology AG Dezember 2015 ProfiMessage Manual ...
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