Gira CO2-Sensor, Руководство пользователя

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Order No. 2104 ..
the command values change, if required, only at these times. The disadvantage of a
continuously varying temperature as a result of this feedback control option is in contrast with
the advantage of this very simple 2-point room temperature control. For this reason, quick-
reaction heating or cooling systems should not be triggered by a 2-point feedback control
system, for this can lead to very high overshooting of the temperature, thus resulting in loss of
comfort. When presetting the hysteresis limiting values, you should distinguish between the
operating modes.
"Heating" or "cooling" single operating modes:
In heating mode, the controller will turn on the heating when the room temperature has fallen
below a preset limit. In heating mode, the feedback control will only turn off the heating if the
preset temperature limit has been exceeded.
In cooling mode, the controller will turn on the cooling system when the room temperature has
exceeded a preset limit. The control system will only turn off the cooling system if the
temperature has fallen below a preset limit. In this connection, variable "1" or "0" will be output,
depending on the switching status, if the temperature exceeds or falls below the hysteresis
limits.
The hysteresis limits of both operating modes can be configured in the ETS.
The following two images each show a 2-point feedback control for the individual operating
modes "Heating" (Figure 20) or "Cooling" (Figure 20). The images take two temperature
setpoints, one-stage heating or cooling and non-inverted command value output.
Figure 20: 2-point feedback control for the single "Heating" operating mode
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Software "KNX CO2 sensor"
Functional description