Central Control Of The Room Operating Mode Via The Schedules Use And Occupancy; Central And Local Control Of Room Operating Mode Based On Occupancy - Siemens Desigo RXB Technical Manual

Presence detector
Effective room operating
mode
Presence detector
48/140
Siemens
Building Technologies
5.4.3 Central control of the room operating mode via the
schedules Use and Occupancy
Third-party S-mode does not support these schedules. If nevertheless used, the room
controller may produce errors.
5.4.4 Central and local control of room operating mode based
on occupancy
Central Local
Controller
Prio
S
1.
DI
1.
3.
S
S
3.
DI
3.
PPS2
3.
S
The presence detector has two states:
State Description
• Room is occupied.
Occupied
• Room controller switches to Comfort.
• Room is not occupied.
Unoccupied
• Room controller switches to Economy or Precomfort.
• The change in the Effective room operating mode is event-driven at exactly the time
when the Effective occupancy changes.
• The room unit or Temporary Comfort mode (both priority 3) can cause the Effective
room operating mode to change again
Presence detector
Occupied
(people enter room)
Unoccupied
(people leave room)
Key: Occupied means: "changes to occupied ".
The presence detector is connected directly to a digital input on the room controller
(see page 102); alternatively an EIB/KNX presence detector connected to the EIB/KNX
bus may be used (see diagram below).
The two inputs are OR-linked: If one signals presence, presence applies.
RXB (KNX) Applications library
Room operating modes
A presence detector detects the presence of people in
S
a room.
It controls the room operating mode of a room controller
while the building is in use. Outside the building-in-use
period, it is disabled.
S
last command wins.
New Effective room operating mode
Precomfort
Precomfort if room operating mode from schedule
= Comfort or Precomfort
Economy if room operating mode from schedule
= Economy.
CLC and RAD description of functions for CC-02 CM110384en_03
28 Feb 2009