Siemens Desigo RXB, Technical Manual, Page: 136 / 476

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Siemens RXB (KNX) Applications library CLC and RAD description of functions for CC-02 CM110384en_03
Building Technologies Room operating modes 28 Feb 2009
5.5.1 Local control of room operating mode via window
contact input
Window contact
PPS2
Central
(Synco controller)
Local
1.
2.
3.
DI
DI
3.
Controller
3.
Prio
1.
Central (ACS)
0.
If a window is opened, the room controller always
switches to room operating mode
Protection , i.e. the
heating or cooling output is reduced to a minimum.
The table below shows the
Effective room operating mode as a function of the window
contact input.
Window contact state Effective room operating mode
Window closed No effect.
Lower-priority inputs determine the operating mode.
Window open Protection.
The window contact is connected directly to a digital input of the room controller (see
page 102).
Master/slave applications:
LTE mode does not allow for communicating to the master the slave's window switch
state.
5.5.2 Central room operating mode control via Enable
Comfort
PPS2
Central
(Synco controller)
Local
1.
2.
3.
DI
DI
3.
Controller
3.
Prio
1.
Central (ACS)
0.
A central operator station can use the enable Comfort
input to specify whether the room operating mode can
be switched to a higher mode than
Economy , i.e. if
priority 3 influences ( room operating mode input,
presence detector, room unit) are enabled.
However, the room controller can be used to force
enabling of priority 3 influences via local Comfort mode
by ignoring enable Comfort .
Effective room operating
mode
Note