User Manual

Control concept
Desigo room automation
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Grouping by local and central functions for the examples from the figure above
Local manual operation Fir alarm Scheduler program
Central function n/a Fire alarm reception
Commanding of On-command
Commanding of On/Off command
in dependence of time
Local function Commanding of manual brightness
Adapting lighting
Switching on lighting Switch on/off lighting
Control concept
The control concept is based on the following:
● Grouping into autonomous functions determining a command for lighting
● Priority assignment to individual functions
● Evaluation of all functions and decision on the state of lighting based on priorities
Autonomous functions to control lighting
Priorities depend on plant requirements. The table shows the typical priorities in ascending format.
Function Description
Automatic control Automatic switch-on/switch-off based on brightness, constant lighting control.
In simply terms, this function achieves optimum lighting conditions automatically in
occupied rooms, and switches off lighting when rooms are unoccupied.
Manual operation (room, central) Manual operation allows users to themselves determine brightness via buttons. If
manual operation overrides a lower-priority function, a scheduler program or local
presence information will reactivate the function.
Presence-based influence (room) Automatic switch-on when dark upon entering a room, and automatic switch-off when
leaving a room. The presence-based function generally acts on the same priority as
manual operation.
Scheduler program Lighting can be switched on/off at specific times using a scheduler program.
Furthermore, automatic control can be activated or deactivated via scheduler program.
Another priority may need to be commanded depending on purpose. If, e.g., automatic
control should be activated at noon, manual operation must be overridden by allowing
the scheduler program to act on the priority for manual operation. If lighting is to be
switched off at night without allowing for manual operation, a higher priority must be
commanded.
Manual operation at high priority (room,
central)
Manual operation at high priority allows for influencing lighting blinds and overriding
low-priority functions. For example, this function allows for ensuring that neither
motion detectors nor scheduler programs can switch on/off lighting at the wrong time
during a lecture/presentation.
Maintenance, central For maintenance or cleaning, lighting is switched on/off at high priority enabling staff
to carry out all required work without risk of injury or being interrupted.
Protection, central Lighting can be switched on in the event of a fire alarm to light escape routes or
support emergency crew access.
A very simple control contains just one or two functions, A complex plant may use many or all available
functions. In addition, the response of individual functions may require parameterization depending on the
requirements. The following figure shows an example of a plant including all functions.