Siemens RDG100KN Basic Documentation page 37

ON/OFF control
Modulating control: 3-position, PWM or DC 0...10 V
Note:
Setting the sequence and the control outputs
Siemens
Building Technologies
The diagrams below show the control sequence for 2-position control.
Heating mode with manual selection
(P01 = 2)
Y
Y1
1
w
0
½ SDH ½ SDH
Heating and cooling mode (P01 = 04)
Y
Y1
Y2
½ x ½ x
dz dz
1
w
0
½ SDC
½ SDH ½ SDH
The diagrams below show the control sequence of modulating PI control.
Heating mode with manual selection
(P01 = 2)
Y [%]
Y1
100
0
w
XpH
Heating and cooling mode (P01 = 04)
Y [%]
Y1
Y2
½ x ½ x
dz dz
100
0
w
XpH XpC
The diagrams only show the PI thermostat's proportional part.
Refer to sections 3.4 "Applications", 3.6.1 "Sequences", and 3.7 "Outputs".
RDG100KN Basic documentation
Functions
Cooling mode with manual selection
(P01 = 2)
Y
1
0
T[°C]
½ SDC
T[°C] Room temperature
w Room temperature setpoint
Y1 Control command "Valve" (H)
Y2 Control command "Valve" (C)
SDH Switching differential "Heating" (P30)
T[°C]
½ SDC
SDC Switching differential "Cooling" (P31)
X Dead zone (P33)
dz
Cooling mode with manual selection
(P01 = 2)
Y [%]
100
T[°C]
0
T[°C] Room temperature
w Room temperature setpoint
Y1 Control command "Valve" heating
Y2 Control command "Valve" cooling
T[°C]
XpH Proportional band "Heating" (P30)
XpC Proportional band "Cooling" (P31)
X Dead zone (P33)
dz
Y2
w
T[°C]
½ SDC
Y2
T[°C]
w
XpC
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CE1P3191en
22 Jun 2010