Operating Modes - ABB i-bus KNX Product Manual

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ABB i-bus KNX
Parameters
7.7.1

Operating modes

Options:
This parameter is used to select which operating modes are to be used. Depending on the selection,
the operating modes not listed are removed.
One possible application for the restriction of the operating modes used is buildings in which,
e.g. Economy is not used because the change is always between Comfort and Standby.
If the device is requested via a group object to change to one of the operating modes not available,
the device remains in or changes instead to Comfort.
Explanation of the operating modes:
•
Comfort: The room is used actively by a person/persons. The setpoint temperature is set
correspondingly. In the Comfort mode the controller actively attempts to reach the room temperature
specified (by heating or cooling).
•
Standby: On a change to Standby, the temperature is allowed to drop (heating) or increase (cooling)
to a specified value. Only once this temperature is reached is the heating or cooling activated again.
Typically the setpoints are 2-3 °C below/above the Comfort setpoint temperature. The Standby mode
is also used to increase/reduce the room temperature after a nighttime reduction (Economy) and
expected imminent change to the Comfort mode such that it does not take too long to reach the
Comfort temperatures. The change between Comfort and Standby can be made using the Operating
mode group object, or, with presence detection in the room, via the Presence detector (master) group
object. The reception of the presence value always results in a change to Comfort.
•
Economy: This is also called nighttime reduction. Here the temperatures are allowed to drop (heating)
or increase (cooling) to a different, lower/higher setpoint. The purpose is to obtain further energy
savings during extended periods without use (e.g. overnight or during the weekend) because less
energy must be used to maintain this temperature. The setpoints for Economy are typically 2-3 °C
below/above the values for the Standby setpoint temperature. The change between Comfort and
Standby can be made using the Operating mode group object, or, with presence detection in the
room, via the Presence detector (master) group object. The reception of the presence value always
results in a change to Comfort.
128 2CDC508220D0211 Rev. A | VC/S 4.x.1
Comfort, Standby, Economy, Building Protection
Comfort, Standby, Building Protection
Comfort, Building Protection