Local Control Of Room Operating Mode With Room Unit - Siemens Desigo RXB Technical Manual

Technical manual
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Effective room operating
mode
Room unit
Effective room operating
mode
64/140
Siemens
Building Technologies
• The change in the Effective room operating mode is event-driven at exactly the time
when the Effective occupancy changes.
• The room unit (which is also priority 3) can cause the Effective room operating mode
to change again
last command wins.
Presence detector
No presence detector
Unoccupied
(people leave room).
Occupied
(people enter room).
Key:
Occupied means: "changes to occupied ".
5.6.3

Local control of room operating mode with room unit

Local
Controller
Prio
1.
DI
3.
DI
PPS2
3.
The room unit is connected to the PPS2 interface on the room controller.
It displays the Effective room operating mode in a simplified form, and can also be used
to change it.
State
Description
Auto
Effective room operating mode is Comfort.
Reduced operation in the room, dependent on priority 1 or 3 influence:
Effective room operating mode is Precomfort, Economy or Protection.
• The change in the Effective room operating mode is event-driven at the moment
when the button on the room unit is pressed.
• The presence detector (which is also priority 3) can cause the Effective room
operating mode to change again
The table below shows the effect of the
mode of the room controller.
RXB (KNX) Applications library
Room operating modes
New Effective room operating
mode
Comfort (default)
Economy.
Comfort
The
/Auto button on the room unit can be used like a
presence button.
The room user can enable or disable HVAC control.
last command wins.
/Auto button on the Effective room operating
CLC and RAD description of functions for CC-02 CM110384en_03
28 Feb 2009

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Desigo rxc, desigo rxb, desigo rxl, desigo rxa

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