Central Setpoint Shift - Siemens Desigo RXB Technical Manual

Note!
STOP
Management station
Summer/winter
compensation
Internal correction by
controller
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 that have been changed by a tool (e.g. HandyTool) are overwritten by
PX-KNX during start-up of the room controller!
6.4

Central setpoint shift

• The Comfort, Economy and Precomfort setpoints can be adjusted centrally for
heating and cooling via the building automation and control system.
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) application library
Setpoint calculation
Possible partner
function blocks
Siemens SBT proprietary
Winter compensation Original
values
B
A
FNC Description of functions for FC-10, FC-11, FC-12
Known partner devices
Siemens:
Synco RMB795
A .
Summer compensation
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CM110385en_05
28 Feb 2009
T
OA