Technical data

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Siemens RDG100KN Basic documentation CE1P3191en
Building Technologies Functions 22 Jun 2010
Modulating control: 3-position or PWM
The diagrams below show the control sequence of modulating PI control.
Heating mode (P01 = 0) Cooling mode P01 = 1)
w
XpH
Y
Y1
TR [°C]
XpH
YE
0%
100%
3181D18a
w
D
Y
0%
100%
TR [°C]
XpC
Y2
XpC
Y1
3181D19a
w
w
D
Changeover (P01 = 2 or P01 = 3)
T[°C] Room temperature
w Room temperature setpoint
Y1 Control command “Stage 1"
Y2 Control command “Stage 2”
XpH Proportional band “Heating” (P30)
XpC Proportional band “Cooling” (P31)
X
dz
Dead zone (P33)
w
D
Setpoint differential (P34)
XpH
Y
TR [°C]
XpH
XpCXpC
Changeover
0%
100%
Y1Y2
Y1
Y2
3181D20a
w
w
D
w
D
The diagrams only show the PI thermostat’s proportional part.
Setting the sequence and the control outputs
Refer to sections 3.4 "Applications", 3.6.1 "Sequences", and 3.7 "Outputs".
Note: