Central Setpoint Shift - Siemens Desigo RXB Technical Manual

Important!
STOP
Management station
Summer/winter
compensation
Internal correction by
controller
Example
Siemens
Building Technologies
In LTE-mode, the central setpoint setting is transmitted via the following communication
objects (triplets):
Setpoints heating (input)
Setpoints cooling (input)
TempRoomSetpSetHeat
TempRoomSetpSetCool
Geographical zone
Setpoints changed by a tool (e.g. HandyTool) are overwritten by PX-KNX during room
controller startup!
6.4

Central setpoint shift

The Comfort, Economy and Precomfort setpoints can be adjusted separately for
heating and cooling centrally from the BACS.
Central setpoint shifts are used particularly e.g. for summer/winter compensation.
Summer/winter compensation causes a gradual increase in room temperature as a
function of the outside temperature. This prevents too great a difference between the
indoor and outdoor temperature in summer and increases overall comfort in winter.
Normally, only Comfort and Precomfort values are shifted.
The room controller corrects the setpoints resulting from central shift by applying the
following rules
• Comfort setpoints:
The value for the spacing must not be below the original value
• Precomfort setpoints:
The value for the spacing to Comfort setpoints must not be below the original values
.
B
Setpoints Sp [°C]
Protection cooling
Economy cooling
Precomfort cooling
Comfort cooling
Comfort heating
Precomfort heating
Economy heating
Protection heating
RXB (KNX) Applications library
Setpoint calculation
Possible partner
function blocks)
Siemens SBT proprietary
Winter compensation Original
values
B
A
CLC and RAD description of functions for CC-02 CM110384en_03
Known partner devices
Siemens:
Synco RMB795
A .
Summer compensation
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28 Feb 2009
T
OA