ABB i-bus KNX Product Manual page 104

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ABB i-bus KNX
Parameters
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Dependent parameter
Hysteresis
Options:
This parameter is used to specify the hysteresis that is to apply to the setpoint to prevent continuous
switching of the controller.
•
Upper switching point = setpoint + hysteresis
•
Lower switching point = setpoint – hysteresis
Heating controller:
•
If the actual temperature is below the lower switching point, the controller switches on.
•
If the actual temperature is above the upper switching point, the controller switches off.
Cooling controller:
•
If the actual temperature is below the lower switching point, the controller switches off.
•
If the actual temperature is above the upper switching point, the controller switches on.
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Dependent parameter
Activate temperature limitation
Options:
A controller temperature limitation can be activated using this parameter. Using the temperature limitation,
the controller's control value for this stage can be set to 0 on reaching a parameterized temperature.
In this way, exceeding (heating) or dropping below (cooling) this temperature can be prevented.
An example of the usage of the temperature limitation is floor heating, where exceeding a specific
temperature must be prevented to protect the material of the floor.
•
no: The temperature limitation is deactivated.
•
yes: The temperature limitation is activated. The following dependent parameters are also displayed.
102 2CDC508220D0211 Rev. A | VC/S 4.x.1
0.3...0.5...25.5 K
No
Yes