Technical data

The diagrams below show the control sequence for 2-position control.
Heating mode with manual selection
(P01 = 2) or
for P09 >= P10 in heating sequence *)
Cooling mode with manual selection
(P01 = 2) or
for P09 >= P10 in cooling sequence *)
½ SDH
1
0
½ SDH
w
Y
3191D01_01
T[°C]
YH
Y
½ SDC
1
0
½ SDC
w
3191D13_01
T[°C]
YC
Heating and cooling mode (P01 = 04)
Y
½ SDC
1
0
½ SDC
w
3191D11
T[°C]
YC
½ SDH
½ SDH
YH
½
x
dz
½
x
dz
T[°C] Room temperature
w Room temperature setpoint
YH Control command "Valve" (heating)
YC Control command "Valve" (cooling)
SDH Switching differential "Heating" (P30)
SDC Switching differential "Cooling" (P31)
X
dz
Dead zone (P33)
Modulating control: 3-position, PWM, or DC 0...10 V
The diagrams below show the control sequence of modulating PI control.
Heating mode with manual selection
(P01 = 2) or
for P09 >= P10 in heating sequence *)
Cooling mode with manual selection
(P01 = 2) or
for P09 >= P10 in cooling sequence *)
XpH
100
0
w
Y [%]
3191D03_01
T[°C]
YH
XpC
Y [%]
100
0
w
3191D14
T[°C]
YC
Heating and cooling mode (P01 = 04)
Y [%]
100
0
w
3191D12
T[°C]
YC
XpH
YH
XpC
½
x
dz
½
x
dz
T[°C] Room temperature
w Room temperature setpoint
YH Control command "Valve" (heating)
YC Control command "Valve" (cooling)
XpH Proportional band "Heating" (P30)
XpC Proportional band "Cooling" (P31)
X
dz
Dead zone (P33)
*) P09, P10 with software V1.20 and later, see section 3.3.1
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".
On/Off control
Note:
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Siemens RDG100KN, RDG160KN Basic documentation CE1P3191en
Building Technologies Functions 2014-05-23