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3.2 Temperature control
3.2.1
General
Optigo
has a choice of the following control modes:
Ardo
1. Supply air
2. Room cascade
3. Extract air cascade
The supply air temperature controller is reverse acting, i e. the output will increase for decreasing
temperature. The temperature at the supply air sensor will be constantly kept at the user setpoint value. The
controller is a PID-controller with settable P-band, I-time and D-time.
In the Room cascade and Extract air cascade modes the supply air is controlled as part of a cascade controller
together with the room/extract temperature controller. The room/extract temperature offset will dictate the
supply air temperature setpoint.
3.2.2
Control modes
Read more about configuration of the control modes in 4.4 Ventilation.
Supply air control
The supply air temperature is kept at the setpoint value by controlling the output signals for the sequences.
A single PI control loop is used.
The actual setpoint for the supply air temperature will be limited to a settable minimum and maximum.
Settings and configuration for Supply air control
Table 3-1 Path to configuration and settings for Supply air control
Feature
Configure input
1
Sensor type selection
2
Controller output
Neutral zone setting
Min / Max limit supply air
Setpoint supply air
1. Configured according to config-file, but can be changed.
2. Configured according to config-file, but can be changed.
Room cascade
Cascade control of room temperature and supply air temperature to achieve a constant, settable room
temperature. The room controller output signal (0-100%) generates the supply air controller's setpoint value
between min and max supply setpoint.
Optigo
Ardo
manual, Rev. A
Menu path in display
Configuration ►Inputs/Output-
s►Analog inputs►Supply air
temperature
Configuration ►Inputs/Output-
s►Analog inputs►Supply air
temperature
Ventilation►Actual/Setpoint►-
Supply air controller
Ventilation ►Actual/Setpoint►-
Supply air controller
Ventilation ►Actual/Setpoint►-
Supply air controller
Ventilation ►Actual/Setpoint►-
Supply air controller
Information for the specialist
Variable
Sensor type
Controller output (%)
Neutral zone (C°)
Min / Max limit supply air (C°)
Setpoint supply air
Note
21 (76)
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