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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
Existing Effective
room op. mode
Room unit
display
Manual operation of
/Auto button
New
Effective room
operating mode
Comfort
Auto
Æ
Precomfort
if
Effective occupancy
= Occupied.
Economy
if
Effective occupancy
= Unoccupied.
Precomfort
Æ
Auto
Comfort.
Economy
Æ
Auto
Comfort
for Temporary
Comfort period
1)
.
Protection
Æ
Auto
Protection, unchanged.
Key:
Æ
Auto means: "changes to Auto ".
1)
Comfort
mode is active for the predefined
Temporary Comfort
period (see page
103). The room controller then returns to
Economy.
5.6.4
Example for stand-alone
The example below shows how local influences interact to affect the room operating
mode.
•
Window contacts
are installed
in all rooms
.
If the window is opened (1), the room operating mode changes to Protection and the
room unit is switched again to .
•
Room 1
has a
room unit
.
As no presence detector is connected, the basic room operating mode is
Precomfort
and the timer (Temporary Comfort mode time, see page 103) is thus not available.
The room unit allows for switching between
Precomfort
and
Comfort
(2).
•
Room 2
has a
room unit
and a
presence detector
.
If unoccupied, the basic room operating mode is
Economy
; if occupied, the room
operating mode changes to
Comfort
(3) and the room unit is set to Auto.
The room unit allows for switching between
Comfort
and
Precomfort
(2).
•
Room 3
: To force the basic room operating mode
Economy
, a presence detector in
state
unoccupied
is simulated at an open digital input (occupied = contact closed,
see page 102).
The timer is available from
Economy
.
The room has a
room unit
on which the
timer
is activated (
Temporary Comfort
mode
period: see page 103). This is where the room operating mode is set to
Comfort
(2); when the window is opened (3), after timer expiration (4), or after
pressing again the /Auto button (5), the room operating mode returns to
Economy
.