Siemens RDG100 Basic Documentation page 34

Modulating control: 3-position, PWM or DC 0...10 V
Heating mode (P01=0)
Y
XpH XpH
100%
YHC2
YHC1
w
0%
w
D
Changeover (P01=2 or P01= 3)
Changeover
Y
XpH XpH XpC
100%
YHC2 YHC1
w
0%
w
D
Note
Setting the sequence and the control outputs
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The diagrams below show the control sequence of modulating PI control.
TR [°C]
XpC
YHC2
YHC1
w
D TR [°C]
The diagrams only show the PI controller's proportional part.
Refer to sections 4.5 ("Applications"), 4.7.1 ("Sequences") and 4.7.2 ("Outputs").
RDG100, RDG100T, RDG110, RDG140, RDG160
Functions
Cooling mode P01=1)
Y
XpC
100%
YHC1
w
0%
w
T[°C] Room temperature
w Room temperature setpoint
YHC1 Control command "Stage 1"
YHC2 Control command "Stage 2"
XpH Proportional band "Heating" (P30)
XpC Proportional band "Cooling" (P31)
X Dead zone (P33)
dz
w Setpoint differential (P34)
D
Basic Documentation
XpC
YHC2
TR [°C]
D
CE1P3181en
14 Dec 2011