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Siemens Basisdokumentation RVP340, RVP350, RVP351 CE1P2545de
Building Technologies 10 Funktionsblock: Stellantrieb Heizkreis 15.03.2011
10.2.2 Sollwertanstieg
t
t
2522D07
T
Vw
T
Vw
T
Vw
Maximaler Anstieg: = ––––––––
t
t Zeit T
Vw
Vorlaufsollwert
t Zeiteinheit T
Vw
Sollwertanstieg pro Zeiteinheit
Der Anstieg des Vorlaufsollwertes kann maximalbegrenzt werden ("Aufheiz-
bremse"). Der Vorlaufsollwert kann dann im Maximum nur noch um die
eingestellte Temperatur pro Zeiteinheit (°C pro Stunde) zunehmen. Diese
Funktion:
verhindert Knackgeräusche in den Leitungen
schont Gegenstände und Baumaterialien, die kein rasches Aufheizen
ertragen (z.B. Antiquitäten)
verhindert Überlastung der Wärmeerzeugung.
Diese Funktion kann unwirksam gemacht werden (Einstellung ---).
10.3 Antriebstyp
Auf der Bedienzeile 88 kann der Antriebstyp bzw. die Regelungsart gewählt
werden:
0 = Zweipunktregelung
1 = Dreipunktregelung
10.3.1 Zweipunktregelung
Die Zweipunktregelung arbeitet als witterungsgeführte Vorlauftemperaturregelung.
Die Vorlauftemperatur wird durch EIN/AUS des Stellgerätes (Ventil) geregelt. Die
dazu erforderliche Schaltdifferenz ist auf Bedienzeile 89 einstellbar.
2474D01
ON
OFF
T
Vw
SD
2
SD
2
T
V
ON Antrieb angesteuert
OFF Antrieb stromlos
SD Schaltdifferenz (Bedienzeile 89)
T
V
Vorlauftemperatur
T
Vw
Vorlaufsollwert
43


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