Assortment / System Description

Control function
Room controller and setpoints
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11.4.6 Room controller output signals
The room controllers forward their output signals (0…100%) to all impacted
aggregates in all segments of the room. For example, the heat controller, that
control room temperature, always forwards its output signal to all enabled
aggregates including radiators, ceiling heating, and heating coils. In control for
the individual aggregates, the 0…100% signal is always converted to the
configured output signal.
Figure: Examples of room controllers with 0…100% output signal to the
aggregate controllers
Key:
R Room S Segment or segments
H Heating controller RAD Radiator controller
C Cooling controller CCG Chilled ceiling controller
V IAQ controller VAV Controller for VAV actuator
F Air volume flow tracking controller CCL Cooling coils controller
RH Humidity controller
The sequence for each heating/cooling aggregate can be configured in
temperature control of the DXR2 automation station. There is one sequence for
heating and one sequence for cooling.
The devices are then controlled in the cooling or heating sequence based on
room temperature and setpoint. The next sequence element is immediately
controlled if a device is currently unavailable (fault or out of service).
Figure: Sequence of control sequences for a VAV application
Room controller output
signals
Control sequences for
temperature control