Parameter Window: "General - ABB i-bus EIB Product Manual

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ABB i-bus EIB / KNX
4.5.2 Parameter window:
"General"
© 2004 ABB STOTZ-KONTAKT GmbH
Project design and programming
Parameter: "Function of output when control is active"
It can be set here whether the output operates as a "Master" or "Slave" in fan
coil control mode.
There can only be one output with the master function per fan coil unit. This
output controls fan speed 1. The master controls valve drives or further fan
speeds via communication objects. These outputs must then be
parameterised with the "Slave" function.
Outputs with the slave function should be parameterised as
Note:
such. If parameterised e.g. as a "Switch actuator", there is the
danger that more than one output is closed under unfavourable
conditions. The fan motor for example can be damaged as a
result.
Outputs with the slave function are only controlled via the object "Fan coil
slave". The following parameters are only visible in the "Master" setting.
Parameter: "Status response of switching state"
The object "Status switch" can be enabled via this parameter if the status of
the output is reported on the bus.
Parameter: "Waiting time for switching between two speeds"
The operating time is delayed to enable an idle period when switching over
the motor or valve or to prevent the period that they are switched on/off from
being too short. The value range can be set between 500 ms and 1 min.
Parameter: "Type of fan coil unit"
It is possible to choose the type of fan coil unit.
In a two-pipe system, only hot or cold water flows through the fan coil unit
and the device therefore only has one heat exchanger. In a 4-pipe system,
the fan coil unit has separate connections for hot and cold water. The device
therefore has two heat exchangers.
Parameter: "Operating mode"
A two-pipe system can be used for "heating", "cooling" or both "heating and
cooling". In latter case the object "Toggle heating/cooling" is released, over
which the building control indicates whether hot or cold water is fed.
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