ABB i-bus KNX Product Manual page 108

®
ABB i-bus KNX
Commissioning
Automatic adjustment
of the valve drive
Options:
If the control value 0% is only rarely achieved in ongoing operation, this can lead to inaccuracies in
positioning control. This parameter activates automatic adjustment to move the valve drive in a defined
manner to the 0% position. This serves as the basis for position adjustment.
Selection of option Yes:
106 2CDC508134D0202 | FCA/S 1.x.x.1
No
Yes
Dependent parameter:
Number of changes until adjustment
30...500...65,535
Options:
This parameter determines the number of valve controls that are to be triggered after automatic
adjustment.
Note
Automatic adjustment/reference adjustment
The adjustment counter is incremented by 1 at the end of a drive adjustment.
If the parameterized number of valve controls is reached, the reference adjustment is started.
The closed position (independent of the characteristic curve) is then exceeded by 5% of the
parameterized switch on time for the control value, based on the last control value (at least 1
second, no more than 60 seconds). This function cannot be interrupted! Thereafter, the currently
calculated valve position is approached, and the adjustment counter is set to zero.
The following events trigger a reference adjustment.

Bus voltage recovery

ETS reset

Download

Reset of a remedied fault (via button

Long button push (>2s) on one of the buttons B or D triggers a valve reference movement
for the valves
Reaction on control value 0%
With a control value of 0%, the valve drive (independent of the characteristic curve) is fully
closed.
The closed position (independent of the characteristic curve) is then exceeded by 5% of the
parameterized switch on time for the control value, but not for longer than 1 minute.
or via communication object Reset fault)