Operating Instructions

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Siemens RXB (KNX) application library RXB Description of functions for FC-10, FC-11, FC-12, FC-13 CM110385en_08
Building Technologies Room operating modes 2013-06-17
State Description
Room operating mode
Effective room operating mode of room controller
Comfort
Comfort
Precomfort
Precomfort
Economy
Economy
Protection mode
Protection mode
• For the room controller, the room operating modes Comfort, Precomfort and Economy
are Priority 3 and can therefore be changed later by a presence detector or room unit.
• The room operating mode Protection has first priority, and the presence detector and
room units are therefore disabled.
5.5.4 Local control of room operating mode via
presence detector
Presence detector
PPS2
Central
(Synco controller)
Local
1.
2.
3.
DI
DI
3.
Controller
3.
Prio
1.
Central (ACS)
0.
A presence detector detects the presence of people in
a room.
The presence detector is connected directly to a digital input of the room controller (see
page 142).
Master/slave applications
It is not possible in LTE mode to transmit the status of the slave presence detector to
the master.
The table below shows the two possible occupancy states and the resulting effective
room operating mode.
Switching state Effective room operating mode
 Occupied
(people enter room)
Comfort
 Unoccupied
(people leave room)
Precomfort if room operating mode = Comfort or
Precomfort
Economy if room operating mode = Economy
 Occupied means "changes to Occupied "
As the central scheduler has the same priority as the presence detector, it can change
the occupancy state to "Unoccupied" while a person is in the room.
In this case the person must leave the room and enter again to change the occupancy
state back to "Occupied".
Priorities
Note
Effective
room operating mode
Key
Note