ABB i-bus KNX Product Manual page 61

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ABB i-bus KNX
Commissioning
Temperature control depending on internal
measurement or external bus value
Options: Measurement value (internal)
Bus (external)
This parameter is used to select whether the internal temperature sensor is to be used for
temperature control or whether the value is to be received externally via the bus.
•
Measurement value (internal): The internal measurement value is used.
•
Bus (external): The object Receives temperature from bus is enabled. The current
temperature value to be used for temperature control must be sent on this object.
Temperature setpoint in [0.1°C]
Options: - 500 ... 200 ... 1,000
This parameter is used to define the setpoint temperature to be used for temperature control.
Temperature hysteresis [0.1°C]
Options: 1 ... 10 ... 600
The parameter can be used to set a hysteresis on either side of the temperature setpoint.
The hysteresis is added to/subtracted from the setpoint and is used to compensate for possible
fluctuations in the measurement value. This prevents values that briefly exceed the setpoint
temperature and fall below it again from leading to constant changes in the output object states.
The hysteresis causes switchover to take place only when the setpoint is exceeded by the value
(setpoint + hysteresis) set in this parameter. Conversely, switchover when the value falls below
the setpoint occurs only when the value falls below the threshold minus the value set here
(setpoint – hysteresis).
TR/A 1.1 | 2CDC509082D0201 59