Siemens RXB Series Basic Documentation page 72

Control strategy
Application example 3
72 / 88
Siemens
Building Technologies
Control strategy
Same room
operating mode
Shared
setpoints
Same room
operating mode
Individual
setpoints
Room with floor heating and ventilation
Another application of the "Room control combination" is a room with floor heating
and a ventilation system. Exchanging the relevant process values over the KNX
bus allows for a common control strategy with the following aim:
Optimum control, heating or cooling.
The same room operating mode for both controllers
(time switch and holiday/special day program, manual override).
Automatische Umschaltung der Lüftungsregelung
(Winter: Constant supply air temperature control, own setpoints).
(Summer: Room/supply air cascade control).
M
M
T
p
KNX bus communications
Appendix
Room control Effect
combination
Slave external
The slave ventilation controller shares
setpoint
the same setpoint as the master:
The setpoints cannot be set in the
slave ventilation controllers. Any
setpoint adjustments required must be
made in the master ventilation
controller.
Slave internal
The slave ventilation controller
setpoint
operates with its own setpoints.
T
M M
Comfort heating setpoint
Pre-Comfort heating setpoint
Economy heating setpoint
p
2
2
T
p
T
M
For internal use only
T
CE1P3127en
2013-04-08