Siemens RDG20 KN Series - Page 84

Functions
Control sequences
4
84 | 186
A6V11545892_en--_e
The diagrams below show the control sequence for modulating PI control.
Heating mode
Cooling mode
T[°C] Room temperature
XpH Proportional band "Heating"
(P050)
w Room temperature setpoint
XpC Proportional band "Cooling"
(P052)
YHC Control command "Valve" or
"Compressor"
XpR Proportional band "Radiator"
(P054)
YR Control command "Radiator"
X
dz
Dead zone (P055)
w
D
Setpoint differential (P056)
The diagrams only show the PI thermostat’s proportional part.
For setting sequence and control outputs, see Application overview [➙ 43],
Sequence overview (setting via P001) [➙ 77] and Control outputs [➙ 101].
Parameter P256(RDG264KN only), P260 & P261 (RDG26..) sets the
heating/cooling flow limitation. See Additional functions [➙ 48].
Modulating control:
3-position, PWM or
DC 0...10 V
Note
Note