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 Fan control 2013-06-17
The following example illustrates the effect of the commanded fan value via KNX bus
on the room units's display:
Command
(from KNX bus)
QAX LED
/ cursor
position
Parametrization
Manual (P093 = Manual)
Auto (P093 = Auto, P168 = 1)
Auto (P093 = Auto, P168 = 0)
X = 0%
OpMode: not Comfort
(valves only
1)
)
FanSpeed: 0, BuildProt is active
OpMode: not Comfort
FanSpeed: Auto
e.g. S
minPreCmf
OpMode: not Comfort
(valves only
1)
)
FanSpeed: 0, BuildProt is active
Heating:
0% < X <=23%
Cooling:
0% <
X
<=33.5%
I
OpMode: Comfort
FanSpeed from bus: X
OpMode: Comfort
FanSpeed from bus: X
OpMode: Comfort
FanSpeed from bus: X
Heating:
23% < X <=50%
Cooling:
33.5% < X <=65%
II
OpMode: Comfort
FanSpeed from bus: X
OpMode: Comfort
FanSpeed from bus: X
OpMode: Comfort
FanSpeed from bus: X
Heating:
50% < X <=100%
Cooling:
65% < X <=100%
III
OpMode: Comfort
FanSpeed from bus: X
OpMode: Comfort
FanSpeed from bus: X
OpMode: Comfort
FanSpeed from bus: X
Notes
Function with FC-10-11-12-13 Function without P168 for
FC-10-11-12
FC-13 with P168 = 1
Not available with FC-10-11-12
FC-13 with P168 = 0
1) The valves are controlled with the setpoints of the corresponding operating mode.
A possible electric heater will be disabled.
The time between a bus command and the reaction of the fan may be up to 5-6 sec.
The effective fan speed is available in the following S-mode output communication
object:
Fan output (Output communication object)
Flags
Type Send heartbeat Value
R
W
K
T
U
1 0 1 1 0 5.001
DPT_Scaling
yes 0...100% 0 = 0%
255 = 100%
In LTE mode, the value for the fan is transmitted as follows:
Fan output (Output)
Possible partner function blocks
Known partner devices
FanSpeed
393 UFS
User Fan Speed Setting
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Geographical zone
Note