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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
Possible states are:
Room operating mode
Effective room operating mode
of room controller
Comfort
Comfort
Precomfort
Precomfort
Economy
Economy
Protection
Protection
•
The room operating modes
Comfort
,
Precomfort
and
Economy
have priority 3 fro the
room controller, i.e. they can be changed by a presence detector or room unit.
•
The
Protection
room operating mode has priority 1, i.e. presence detector and room
units are 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 102).
Master/slave applications:
LTE mode does not allow for communicating to the master the slave's presence
detector state.
The table below shows the two possible occupancy states and the resulting
Effective
room operating modes.
Switching state
Effective room operating mode
Æ
Occupied
(people enter room)
Comfort
Æ
Unoccupied
(people leave room)
Precomfort
if room operating mode =
Comfort
or
Precomfort
Economy
if room operating mode =
Economy
Key:
Æ
Occupied means: "changes to occupied ".
Priorities
Note
Effective room operating
mode