ABB i-bus FCC/S 1 1 Series Product Manual page 251

®
ABB i-bus KNX
Parameters
—
7.8.1.1.1.2.3.1 Dependent Parameter
Number of changes until adjustment
Options:
This parameter determines the number of valve controls after which automatic adjustment is to be
triggered.
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 is then moved past by 5 % of the parameterized switch on time based on the
last control value for the valve drive (at least 1 second, not more than 60 seconds). This function
cannot be interrupted. Thereafter, the currently calculated control value is approached, and the
adjustment counter is set to zero.
Example:
Switch on time for valve drive from 0 to 100 %: 100 s
Current control value: 50 %
Reference adjustment to 0 %: 50 s + 5 s
50 s = normal movement time from 50 % to 0 % + 5 s = 5 % of 100 s
The following events trigger a reference adjustment:
•
•
•
•
The output is only actuated if the calculated change in the valve position (based on the opening
time for the drive and the change in the control value) is greater than one second. This condition
prevents small position changes and protects the drive against unnecessary movements. The wear
on the drive is reduced.
7.8.1.1.1.3 Open/close signal
—
7.8.1.1.1.3.1 Dependent Parameter
Valve drive operating principle, de-energized
This parameter is visible if, in the Valve output parameter, the Thermoelectric (PWM) or Open/
Close signal option has been selected.
Options:
This parameter determines the function of the valve drive.
• Closed: If no current flows in the valve drive, the valve is closed. If current flows in the valve
drive, the valve opens.
• Open: If no current flows in the valve drive, the valve opens. If current flows in the valve drive,
the valve then closes.
30...500...65,535
Note
Bus voltage recovery
ETS reset
Download
Reset of a remedied fault (via Reset button or via Reset fault on valve output X group object)
Closed
Open
FCC/S 1.X.X.1 | 2CDC 508 200 D0211 Rev A 251