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Siemens RDG100, RDG100T, RDG110, RDG140, RDG160 Basisdokumentation CE1P3181en
Building Technologies Funktionen 19 Jun 2009
4.7.3 2-Rohr-Ventilatorkonvektor
Bei 2-Rohr-Anwendungen steuert der Thermostat ein Ventil im Heiz- / Kühlbetrieb
mit Umschaltung (automatisch oder manuell), nur Heizen oder nur Kühlen.
Werkeinstellung ist “nur Kühlen” (P01 = 1).
2-Punkt-Regelung
Folgende Diagramme zeigen die Steuersequenz für 2-Punkt-Regelung.
Heizbetrieb Kühlbetrieb
½ SDH
1
0
½ SDH
w
Y
3076D01
T[°C]
Y1
Y
½ SDC
1
0
½ SDC
w
3076D02
T[°C]
Y1
T [°C] Raumtemperatur SDH Schaltdifferenz ”Heizen” (P30)
w Raumtemperatur-Sollwert SDC Schaltdifferenz ”Kühlen” (P31)
Y1 Steuerbefehl “Ventil” oder “Verdichter”
Stetige Regelung: 3-Punkt, PWM oder DC 0…10 V
Folgende Diagramme zeigen die Steuersequenz für stetige PI-Regelung.
Heizbetrieb Kühlbetrieb
XpH
100
0
w
Y [%]
3076D03
T[°C]
Y1
XpC
Y [%]
100
0
w
3076D04
T[°C]
Y1
T [°C] Raumtemperatur XpH Proportionalband ”Heizen” (P30)
w Raumtemperatur-Sollwert XpC Proportionalband ”Kühlen” (P31)
Y1 Steuerbefehl “Ventil”
Die Diagramme zeigen nur den Proportionalanteil der PI-Regelung.
Einstellung der Steuersequenz und der Steuerausgänge
Siehe hierzu die Kapitel 4.5 “Anwendungen”, 4.7 “Steuersequenzen“ und 4.7.2
“Ausgän
ge“.
Steuersequenz
2-Punkt-Ausgang
Steuersequenz stetiger
Ausgang
Hinweis:
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