Siemens RDG20 KN Series Basic Documentation page 89

Modulating control:
3-position, PWM, or
DC 0...10 V
Note
A6V11545892_en--_c
The diagrams below show the control sequence of modulating PI control.
Heating and cooling mode (P001 = 4)
Heating mode with manual selection
(P001 = 3) or
for energy saving (P010 = 2 & P014) in
heating sequence
T[° C] Room temperature
w Room temperature setpoint
X Dead zone (P055)
dz
The diagrams only show the PI thermostat's proportional part.
For setting sequence and control outputs, see Application overview [➙ 42],
Sequence overview (setting via P001) [➙ 75] and Control outputs [➙ 99].
Parameter P256 (RDG26..KN) sets the heating flow limitation when using a PICV.
See Additional functions [➙ 47].
Functions
Control sequences
Cooling mode with manual selection
(P001 = 3) or
for energy saving (P010 = 2 & P015) in
cooling sequence
YH Control command "Valve"
(heating)
YC Control command "Valve"
(cooling)
XpH Proportional band "Heating"
(P050)
XpC Proportional band "Cooling"
(P052)
4
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