ABB i-bus KNX Product Manual page 241

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ABB i-bus KNX
Planning and application
The device is controlled in accordance with the following schematic principle:
With three Switch speed x (x = 1, 2 or 3) communication objects that are independent of each other, the
fan stages are controlled via the outputs of the Fan Coil Actuator.
Alternatively, fan control can be implemented via a 1-byte communication object – Switch speed – or via
the communication object Fan speed up/down.
Some ventilation controls require an additional central switch on mechanism (main switch) in addition to
the speed switch. Another output of the device may be used for this. The output must be linked to the
communication object Status Fan ON/OFF. This will switch on the main switch if at least one fan speed is
set. If the fan is OFF (Status Fan ON/OFF = 0), the main switch is also switched off.
FCA/S 1.x.x.1 | 2CDC508134D0202 239