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
• The change in the effective room operating mode is event-driven, the key factor
being the point at which the effective occupancy changes.
• The room unit (which is also Priority 3) can cause the effective room operating mode
to change again  the last command always applies.
Presence detector New effective room operating mode
No presence detector
Comfort (default)
 Unoccupied
(people leave room)
Economy
 Occupied
(people enter room)
Comfort
Key: " Occupied" means "changes to Occupied"
5.6.3 Local control of room operating mode with a room unit
Room unit
PPS2
Local
1.
DI
DI
3.
Controller
3.
Prio
The
/Auto button on the room unit can be used like an
occupancy button.
The room user can use it to switch the HVAC system "on" or
"off".
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 mode in the room, depending on the Priority 1 or 3 influences:
Effective room operating mode is Precomfort, Economy or Protection.
• The change in the effective room operating mode is event-driven, the key factor
being 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 last command always applies.
Effective
room operating mode
Effective
room operating mode