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Siemens
RDG400KN,RGD405KN Basic documentation
CE1P3192en
Building Technologies
2017-02-17
3.2.1 Different ways to influence the operating mode
The operating mode can be influenced by different interventions.
The source of the effective room operating mode state can be monitored using the
"Cause" diagnostic data point in the ACS tool, or OZW772 web server.
Source
Description
Value of DP "Cause"
Local operation
via left button
∂
Operating mode is not Auto Timer
∂
No time schedule via bus
Room operating mode selector
(preselection)
∂
Temporary Comfort extension is active
"Timer" function
∂
Operating mode switchover contact (RDG400KN)
Room operating mode contact
∂
Window contact (RDG405KN)
Window switch
∂
Presence detector (RDG405KN)
Presence detector
Bus command
KNX
R
Room operating
mode
∂
Window state
sent via bus (RDG400KN)
Room operating mode contact
∂
Window state
sent via bus (RDG405KN)
Window switch
∂
Presence detector
sent via bus (RDG405KN)
Presence detector
∂
Time schedule available via bus
⇓
local operating mode is set to "Auto Timer"
∂
Time schedule sends Protection mode via bus
⇓
operating mode cannot be changed locally
Time switch
The following table shows the priorities of different interventions.
Lower number means higher priority.
Priority Description
Remark
•
Commissioning
In parameter setting mode (highest priority), you can always
command an operating mode independent of all other settings or
intervention via bus and local input.
‚
Protection mode via bus
from time schedule
Protection mode sent by a time schedule has priority 2.
It cannot be overridden by the user nor by an operating mode
switchover contact.
ƒ
Operating mode
switchover contact
(RDG400KN)
If the contact is closed, the operating mode changes to Economy.
This overrides the operating mode on the thermostat.
ƒ
Window contact
(RDG405KN)
If the contact is closed, the operating mode changes to
Protection. This overrides the operating mode on the thermostat.
ƒ
"Window state" via bus
"Window state" sent via bus has the same effect as the operating
mode switchover contact (RDG400KN) or local window contact
(RDG405KN).
Note: Only one input source must be used, either the local input
X1-D1 or the KNX bus.
„
Operating mode button The user can change the operating mode using the operating
mode button.
„
Operating mode via bus The operating mode can be changed via bus.
„
Temporary extended
Comfort mode via
operating mode button
The operating mode can be temporarily set from Economy to
Comfort by pressing the operating mode button, if ...
– Economy mode was sent via bus,
– extended Comfort mode period >0 (P68)
The last intervention wins, either locally or via bus.
„
Time schedule via bus
The operating mode sent via bus can be overridden by all other
interventions. Exception: Protection mode has priority 2.
„
Presence detector
(RDG405KN)
If the contact is closed (room occupied), the operating mode
changes to Comfort. This overrides the operating mode on the
thermostat. An open contact (room unoccupied) sets the
thermostat back to the previous operating mode.
„
Presence detector via
bus (RDG405KN)
"Presence detector" sent via bus has the same effect as the
local presence detector.
Note:
Only one input source must be used, either the local input
X1-D1or the KNX bus.
Source for change of
operating mode
ACS
Priority of operating
mode interventions
