ABB i-bus KNX Yucus YUB/U1.0.1 Series Technical Reference Manual page 107

KNX Technical Reference Manual
ABB i-Bus ® KNX Yucus
Note: Only available when the "Device function" parameter is set on either
"Single device" or "Master device" and the control function parameter is set on either
"Heating", "Heating with additional stage", "Heating and cooling" or "Heating and cooling
with additional stages".
The actuation of the control valve is determined by the selection of the controller type.
– 2-Point 1 Bit, Off/On: The 2-point control is the simplest type of control. The controller
switches on when the room temperature drops below a certain level (setpoint temperature
value minus hysteresis) and switches off when a particular value (setpoint temperature
value plus hysteresis) is exceeded. The switch-on and switch-off commands are
transmitted as 1-bit commands.
– 2-Point 1 Byte, 0/100%: This is another two-point control as described above. In this
case, however, the switch-on and switch-off commands are transmitted as 1-byte values
(0% / 100%).
– PI continuous, 0-100%: The PI controller adjusts its output value between 0% and 100%
to match the difference between the actual value and the setpoint value and enables a
precise regulation of the room temperature to the setpoint value. It sends the control value
to the bus as a 1-byte value (0% - 100%). To reduce the bus load, the control value is
only transmitted if it has changed by a predefined percentage in relation to the previous
sent value. The control value can also be transmitted cyclically.
– PI PWM, On/Off: This also is a PI controller. Here, the output is a 1-bit command. For
this to occur, the calculated control value is converted into a pulse-interval signal.
– Fan coil: The fan coil controller operates like the PI continuous controller. In addition, it
allows the separate activation of the fan in the fan coil unit (e.g. fan speed levels 1 – 3/5).
12.34.16 Control heating – Heating type
Options
PI continuous, 0 – 100% and PI
PWM, On/Off:
Options
Fan coil:
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".
Multiple heating types (panel heating, convector heating or fan coil) with preset
parameters are available to the user. If the required heating type is not available,
individual parameters can be specified in free configuration.
12.34.17 Control heating – P-component (x 0.1 °C)
Options
Area (e.g. floor heating) 4°C 200 min
Convector (e.g. heater) 1.5°C 100 min
Free configuration
Fan coil 4°C 90 min
Free configuration
Input from 10 to 100
106