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 for modulating PI control.
Heating mode
(automatic changeover = heating or heating only)
Cooling mode
(man. / auto. changeover = cooling or cooling only)
Y [%]
100
0
w
3191D122
T[°C]
YR
XpH
Y1
w
D
XpR
Y [%]
100
0
w
3191D123
T[°C]
Y1
XpR
YR
x
dz
XpC
T[°C] Room temperature XpH Proportional band “Heating” (P30)
W Room temperature setpoint XpC Proportional band “Cooling” (P31)
Y1 Control command “Valve” XpR Proportional band “Radiator” (P32)
YR Control command “Radiator” X
dz
Dead zone (P33)
w
D
Setpoint differential (P34)
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: