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ON/OFF control
The diagrams below show the control sequence for 2-position.
Heating mode
Cooling mode
(automatic changeover = heating or heating only)
(man. / auto. changeover = cooling or cooling only)
YE
Y1
wD
Y
YE
Y1
xdz
3076D05
Y
3076D06
Control sequence
ON/OFF output
1
1
w
0
½ SDH
T[°C]
½ SDH
T[°C]
½ SDC
½ SDC
½ SDH
½ SDH
½ SDH
w
0
½ SDH
Heating mode with manual changeover (P01 = 2) (manual changeover = heating)
T[°C] Room temperature
3076D07
Y
YE
W
1
w
0
Control command “Valve”
YE
Control command “Electric heater”
SDH Switching differential “Heating” (P30)
T[°C]
SDC Switching differential “Cooling” (P31)
½ SDH
½ SDH
Room temperature setpoint
Y1
Xdz
Dead zone (P33)
wD
Setpoint differential (P34)
Modulating control: 3-position, or PWM
The diagrams below show the control sequence for modulating control.
Heating mode
Cooling mode
(automatic changeover = heating or heating only)
(man. /auto. changeover = cooling or cooling only)
Y1
YE
wD
YE
xdz
Y1
100
100
0
Y [%]
3076D08
Y [%]
3076D09
Control sequence
modulating output
XpH w
XpH
0
T[°C]
XpH
T[°C]
w XpC
Heating mode with manual changeover (P01 = 2)
Y [%]
3076D10
(manual changeover = heating)
YE
100
T[°C] Room temperature
W
Room temperature setpoint
Y1
Control command “Valve”
YE
Control command “Electric heater”
XpH Proportional band “Heating” (P30)
0
XpH
Note:
w
T[°C]
XpC Proportional band “Cooling” (P31)
Xdz
Dead zone (P33)
wD
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".
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Building Technologies
RDG100KN Basic documentation
Functions
CE1P3191en
22 Jun 2010