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Art. No. SC 1000 KNX
4.2.4.1.13 Channel function "Fan controller, internal"
With the channel function "Fan controller, internal", the room temperature controller integrated
in the device can be activated. This makes it possible to control the fan from heating and
cooling systems operated by circulating air, such as fan coil units (FanCoil units), depending on
the command value calculated in the controller or using manual operation. No direct bus
telegrams are generated by this channel function. Status messages of the controller can only
trigger bus telegrams.
If necessary, the fan controller can be enabled separately by setting the "Fan controller
available" parameter in the "Room temperature control -> Controller general" parameter node to
"Yes". When the function is enabled additional parameters will appear in the ETS in the "Room
temperature control -> Controller general -> Fan controller" as well as additional communication
objects.
If this channel function is used, the user can influence the room temperature controller on the
control section in the room and thereby specify the fan controller level, without switching over
the operating mode.
A KNX channel "Fan controller, internal" has a display element and sensor surface in the
graphic interface for operation. The display area and sensor area, depending on the existing
operation concept, are combined into one surface (direct operation) or distributed on two
surfaces (selection operation). The sensor element is always executed as a rocker function.
Operation of the sensor surface
+
increases the current fan level by one level. Operation of the
sensor surface
-
reduces the current fan level by one level. The setpoint can be shifted by
several levels by pressing a sensor surface repeatedly.
The fan controller distinguishes between Automatic and Manual operation. Switch-over between
the two operation modes is carried out through a long press of the operating and display
element of the channel function.
Using the channel function, the fan controller can be operated at Level 8 at a maximum,
depending on the number of configured levels.
i
The controller function must be switched on in the "Room temperature control (RTC)"
parameter node in order to use the channel function "Fan controller".
i
The fan controller works only in conjunction with PI feedback controls with continuous or
switching (PWM) command value output. In 2-point feedback control, the fan controller is
inactive, even if the function is enabled in the ETS.
Figure 48: Example of an operating and display element of the channel function
"Fan controller, internal"
left: direct operation / right: selection operation
Page 113 of 347
Software "Smart Control 501511"
Functional description