ABB i-bus
®
KNX
Parameters
FCC/S 1.X.X.1 | 2CDC 508 200 D0211 Rev A 173
7.5.1.6.1.2.1
—
Dependent Parameter
I-proportion
Options:
0…100…255
The standard value depends on the option selected in the
Basic-stage heating
parameter in the
Application parameters
parameter window.
The I-proportion stands for the integral time in a control. The integral proportion causes the room
temperature to approach the setpoint slowly and also to reach it finally. Depending on the system
type used, the integral time may need to have different values. In principle the following applies:
The more sluggish the overall system, the larger the integral time is.
7.5.1.6.1.2.2
—
Dependent Parameter
P-proportion
Options:
01.0…01.5…10.0
The standard value depends on the option selected in the
Basic-stage heating
parameter in the
Application parameters
parameter window.
The P-proportion stands for the proportional range in a control. It fluctuates around the setpoint
and in a PI control is used to change the speed of the control. The smaller the value set, the faster
the control reacts. However, the value should not be set too small because otherwise there may be
a risk of overshoot.
7.5.1.6.1.2.3
—
Dependent Parameter
Use control value for fan automation
This parameter is only visible if the
Free configuration
option has been selected for the
Basic-stage
heating
parameter in the
Application parameters
parameter window.
Options:
No
Yes
This parameter can be used to specify whether the control value for this stage is also to be used
as the control value for the fan automation.
•
No
: The control value is not used for the fan automation.
•
Yes
: The control value is used for the fan automation. If this stage is active and the fan is in the
automatic mode, the control value is also used as a control value to actuate the fan.
Note
If the related stage has a free configuration, the device does not know whether the stage actu-
ated is a fan coil unit or not. However, because the fan automation only makes sense for the fan
coil unit stages, an assignment must be made here.
If a free configuration is selected for all 4 control stages and none of the stages is also parame-
terized for fan automation, the fan automation remains without function.