Figure 2-38 Example of forced ventilation control behaviour for the H Cooling controller mode when the
controller is in bypass state.
2.8 Presence detection
Presence detection is a control function that makes it possible for the controller to automatically switch
between controller states based on if someone is present in the room, or if the CO
2
level in the room is too
high. See section
for information about controller states, and controller state changes when using
presence detection.
Presence detection is performed by using a presence detector, for example, a motion detector, that is
connected to and configured on a digital controller input. Presence can also be detected by using a CO
2
sensor that measures the CO
2
level in the room, and is connected to and configured on an analog controller
input. Regin's ED-RU-DOCS room unit has a built-in CO
2
sensor. When an ED-RU-DOCS room unit is
connected, the controller recognizes the built-in CO
2
sensor automatically, and no controller input
configuration is needed.
The controller checks for presence continuously when the controller is in the state specified by the
Preset
controller state
setting, see section
Presence detection and occupancy (on/off) button on room unit
The presence detection function is enabled and the presence detection configuration settings are shown in
Application tool when any of the configuration values listed in
are configured on a controller
input, or when an ED-RU-DOCS room unit is selected as connected room unit, see the
Configuration ->
Room unit
pane in Application tool.
Heating signal
Cooling signal
Output
Max: 100%
Occupied
heating
setpoint
Occupied
cooling
setpoint
Min: 0%
Room temperature
100%
100%
0%
0%
Cooling demand
Heating demand
Digital ouput signal
when
Forced ventilation active at max output
is set to
At max heating output
Digital output signal
when
Forced ventilation active
is set to
In cooling mode
Active
Inactive
Active
Inactive
DO
DO
44
Regio
Ardo
manual, Rev. D