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5.3 Sonderfunktionen
LOGO!Soft Comfort Online-Hilfe
294 Betriebsanleitung, 11/2017
Funktionsbeschreibung
Der Schwellwertschalter misst die Signale am Eingang Fre. Die Impulse werden über eine
parametrierbare Zeitdauer G_T erfasst.
Der Ausgang Q wird in Abhängigkeit von den eingestellten Schwellwerten gesetzt oder
zurückgesetzt. Siehe die folgende Rechenvorschrift.
Rechenvorschrift
Falls Einschaltschwelle (On) ≥ Ausschaltschwelle (Off), so gilt:
Q = 1, falls fa > On
Q = 0, falls fa ≤ Off.
Falls Einschaltschwelle (On) < Ausschaltschwelle (Off), so ist Q = 1, falls:
On ≤ fa < Off.
Sonderfunktionen (Seite 249)
5.3.3
Analog
5.3.3.1
Analoger Schwellwertschalter
Kurzbeschreibung
Der Ausgang wird in Abhängigkeit von zwei parametrierbaren Schwellwerten ein- und
ausgeschaltet (Hysterese).
Beschaltung
Beschreibung
Eingang
Ax
Bei dem Eingang
Ax
handelt es sich um eines der folgenden Analogsignale:
AI1 bis AI8
(
*
)
AM1 bis AM6 (bei 0BA6) bzw. AM1 bis AM16 (bei 0BA7) oder AM1 bis AM64
(bei 0BA8)
NAI1 bis NAI32 (bei 0BA7 oder 0BA8)
AQ1 und AQ2 (bei 0BA7) oder AQ1 bis AQ8 (bei 0BA8)
NAQ1 bis NAQ16 (bei 0BA7 oder 0BA8)
Die Blocknummer einer Funktion mit Analogausgang
294


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