KNX control elements and application parameters
Application "Internal RTC"
Product manual 2CKA001473B5342
│
245
Notice
This parameter is only available when the "Control value type" parameter is set
either on "2-point 1 Bit, Off/On", "2-point 1 Byte, 0/100%", "PI continuous, 0-
100%" or "Fan coil".
10.24.43 Basic stage cooling — Hysteresis
Options:
Setting option between 0.3 - 25
The hysteresis of the two-point controller specifies the fluctuation range of the controller around
the setpoint value. The lower switching point is located at "Setpoint value minus hysteresis" and
the upper point is at "Setpoint value plus hysteresis".
Notice
This parameter is only available when the "Control value type" parameter is set
either on "2-point 1 Bit, Off/On" or "2-point 1 Byte, 0/100%".
10.24.44 Additional stage cooling — PWM cycle cooling (min)
Options:
00:01:00 - 01:00:00
In PI PWM, On/off the control value percentage values are converted into a pulse-interval
signal. This means that a selected PWM cycle will be divided into an on-phase and an off-phase
based on the control value. Accordingly, a control value output of 33% in a PWM cycle of 15
min. results in an On-phase of five minutes and an Off-phase of 10 min. The time for a PWM
cycle can be specified here.
Notice
This parameter is only available when the "Control value type" parameter is set
on "PI PWM, Off/On“.
10.24.45 Basic stage cooling — Maximum control value (0 - 255)
Options:
Setting option between 0 - 255
The maximum control value of the PI controller defines the maximum value outputted by the
controller. If a maximum value under 255 is chosen, the value will not be exceeded, even if the
controller calculates a higher control value.
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".
10.24.46 Basic stage cooling — Minimum control value for basic load (0 to 255)
Options:
Setting option between 0 - 255
The minimum control value of the PI controller defines the minimum value output by the
controller. If a minimum value greater than zero is chosen, the controller will not output a lower
value, even if it calculates a value that is lower. This parameter can be used to set a basic load,
e.g. for operating surface cooling. Even if the controller calculates the control value zero, a