Siemens Desigo RXB, Technical Manual, Page: 294 / 476

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Siemens RXB (KNX) application library FNC Description of functions for FC-10, FC-11, FC-12 CM110385en_05
Building Technologies Room operating modes 28 Feb 2009
5.5.1 Local control of room operating mode via the
window contact input
Window contact
PPS2
Central
(Synco controller)
Local
1.
2.
3.
DI
DI
3.
Controller
3.
Prio
1.
Central (ACS)
0.
Whenever a window is opened, the room controller
always switches to the
Protection room operating
mode, 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.
Status of window
contact Effective room operating mode
Window closed No effect.
Operating mode is determined by inputs with a lower priority
Window open Protection mode
The window contact is connected directly to a digital input of the room controller (see
page 126).
Master/slave applications
It is not possible in LTE mode to transmit the status of the slave window contact to the
master.
5.5.2 Central control of the room operating mode 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 mode, i.e.
whether Priority 3 influences ( Room operating mode
input, presence detector or room unit) are enabled.
In the room controller however, the Priority 3
influences can be enabled forcibly, by ignoring the
Enable Comfort input (via the parameter Local Comfort
mode ).
Effective
room operating mode
Note