ABB i-bus KNX AA/A 2.1.2, Product Manual

Page: 34 / 68

ABB i-bus
®
KNX
Commissioning
32 2CDC505163D0201 | AA/S 4.1.2, AA/A 2.1.2
Reaction on bus voltage failure
or ETS programming
(only AA/S 4.1.2)
Options: Retain current output value
Adopt user-defined output value
This parameter defines how the output reacts to a bus voltage failure or ETS programming.

Retain current output value : The current output value is retained

Adopt user-defined output value : A user-defined value may be entered.
Selection of the option Adopt user-defined output value :
Dependent parameters:
Output in % [0...100]
Options: 0
…100
This parameter specifies the output value that applies during a bus voltage failure or ETS
programming.
The value for this is entered directly as a percentage of the output type, e.g. 0
…10 V.
Note
After ETS programming (device download) the device starts with the lowest output value. If the function
Characteristic is activated, the system takes into account the parameterized values for this.
Example:

0…10 V output:
The start value after download is 0 V

4…20 mA output:
The start value after download is 4 mA

Characteristic limited to 3…10 V:
The start value after download is 3 V
The value used is always the one assigned to the smallest input value.
Example:

The characteristic assigns an output value of 10 V to the input value 0 % and an output value of 0 V
to the input value 100 %. In this scenario, the device will start at 10 V after the download.