Siemens RDG100KN Basic Documentation page 39

Modulating control: 3-position or PWM
Heating mode with manual selection (P01 = 2)
Y [%]
YE
100
0
½ SDH ½ SDH
Heating and cooling mode (P01 = 4)
Y [%]
YE
100
0
½ SDH ½ SDH
Note:
Setting the sequence and the control outputs
Notes:
Siemens
Building Technologies
The diagrams below show the control sequence of modulating PI control.
Y1
T[°C]
w
XpH
w
D
Y1
Y2
½ x ½ x
dz dz
w
XpH XpC
w
D
The diagrams only show the PI thermostat's proportional part.
Refer to sections 3.4 "Applications", 3.6.1 "Sequences", and 3.7 "Outputs".
 Y1 can only be ON/OFF or PWM
 Y2 can be ON/OFF, PWM or 3-position
 YE can only be ON/OFF
RDG100KN Basic documentation
Functions
Cooling mode with manual selection P01 = 2)
Y [%]
100
0
T[°C] Room temperature
w Room temperature setpoint
YE Control command "El heater"
(only ON/OFF)
Y1 Control command "Valve" (H)
(only PWM, not 3-position)
T[°C]
Y2 Control command "Valve" (C)
XpH Proportional band "Heating" (P30)
XpC Proportional band "Cooling" (P31)
X Dead zone (P33)
dz
w Setpoint differential (P34)
D
Y2
w
T[°C]
XpC
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CE1P3191en
22 Jun 2010