Siemens RDG100T Basic Documentation

34 / 66
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 of modulating PI control.
Heating mode (P01=0) Cooling mode P01=1)
w
XpH
Y
YHC1
TR [°C]
XpH
YHC2
0%
100%
3181D18
w
D
Y
0%
100%
TR [°C]
XpC
YHC2
XpC
YHC1
3181D19
w
w
D
Changeover (P01=2 or P01= 3)
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
dz
Dead zone (P33)
w
D
Setpoint differential (P34)
XpH
Y
TR [°C]
XpH
XpC
XpC
Changeover
0%
100%
YHC1YHC2
YHC1
YHC2
3181D20
w
w
D
w
D
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").
Note

Siemens RDG100T Specifications

General

Brand	Siemens
Model	RDG100T
Category	Thermostat
Language	English