ABB i-bus KNX Yucus YUB/U1.0.1 Series Technical Reference Manual page 125

KNX Technical Reference Manual
ABB i-Bus ® KNX Yucus
available when "Control value type" parameter is set either on "PI continuous, 0 – 100%",
"PI PWM, On/Off" or "Fan coil".
The current control value used by the device can be cyclically transmit to the bus.
12.34.64 Additional cooling stage – PWM cycle cooling (min)
Options
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
"Cooling with additional stage" or "Heating and cooling with additional stages", only
available when the "Control value type" parameter is set on "PI PWM, On/Off".
In PI PWM, On/off the control value percentage values are convert 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.
12.34.65 Additional cooling stage – Maximum control value
Options
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
"Cooling with additional stage" or "Heating and cooling with additional stages", only
available when "Control value type" parameter is set either on "PI continuous, 0 – 100%",
"PI PWM, On/Off" or "Fan coil".
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.
12.34.66 Additional cooling stage – Minimum control value for basic load
Options
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
"Cooling with additional stage" or "Heating and cooling with additional stages", only
Input from 1 to 60
Input from 0 to 255
Input from 0 to 255
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