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Siemens RDG100, RDG100T, RDG110, RDG140, RDG160 Basic Documentation CE1P3181en
Building Technologies Functions 14 Dec 2011
Modulating control 3-position, PWM or DC 0…10 V
The diagrams below show the control sequence for modulating control.
Heating mode
(automatic changeover = heating or heating only)
Cooling mode
(man. /auto. changeover = cooling or cooling only)
Y [%]
100
0
w
3191D09
T[°C]
YHC
XpH
YE
w
D
XpH
Y [%]
100
0
w
3191D08
T[°C]
YHC
XpH
YE
x
dz
XpC
Heating mode with manual changeover (P01=2)
(manual changeover = heating)
T[°C] Room temperature
W Room temperature setpoint
YHC Control command “Valve”
YE Control command “Electric heater”
XpH Proportional band “Heating” (P30)
XpC Proportional band “Cooling” (P31)
X
dz
Dead zone (P33)
XpH
100
0
w
Y [%]
3076D10
T[°C]
YE
w
D
Setpoint differential (P34)
The diagrams only show the PI controller’s proportional part.
Setting the sequence and the control outputs
Refer to sections 4.5 ("Applications"), 4.7.1 ("Sequences") and 4.7.2 ("Outputs").
Control se
quence
modulating output
Note