KNX control elements and application parameters
Application "Internal RTC"
Product manual 2CKA00xx73xxxxx
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248
10.24.100
Control of additional cooling stage — P-component (min)
Options:
Setting option between 0 - 255
The I-component refers to the reset time of a control. The integral component has the effect of
moving the room temperature slowly toward, and to ultimately reaching, the setpoint. Depending
on the type of system used, the reset time has to have different values. In general, the more
inactive the overall system, the greater the reset time.
Note
This parameter is only available when "Control value type" parameter is set
either on "PI continuous, 0 – 100%", "PI PWM, On/Off“ or "Fan coil". In addition,
the "Cooling type" parameter must be set on "Free configuration".
10.24.101
Combined heating and cooling modes
Note
The following parameters are available when parameter "Controller function" is
set on "Heating" or "Cooling" or "Heating and cooling" and parameter "Control
value type" on "2-point 1 bit, On/Off" or "2-point 1 byte, 0/100%".
10.24.102
Combined heating and cooling modes — Switchover of heating/cooling
Options:
Automatic
Only via object
On-site/via extension unit and via object
This function makes it possible to switch between the heating and cooling mode of the device.
–
Automatic
: E.g. for four-conductor systems which allow the switchover between heating and
cooling at all times. The device switches automatically between heating and cooling and to
the associated setpoint. The "Switchover heating/cooling" object is a transmitting 1-bit
communication object. In heating mode a 1 is sent and a 0 in cooling mode.
–
Only via object
: E.g. for two-conductor systems which are operated in heating mode in the
winter and cooling mode in the summer. The switchover between heating and cooling and to
the associated setpoint is carried out via the corresponding 1-bit communication object. This
function is used when a central switchover of the single room controllers is required.
"Switchover heating/cooling" is a receiving object.
–
Local/ via extension unit and via object
: E.g. for four-conductor systems which allow the
switchover between heating and cooling at all times. The switchover between heating and
cooling and to the associated setpoint is carried out manually on the device by the user of
the room or via the "Switchover heating/cooling" object via the bus. The 1-bit "Switchover
heating/cooling" communication object is a transmitting and receiving object. In heating
mode a 1 is sent and a 0 in cooling mode.
