ABB i-bus SA/S 12.10.2.1, Руководство по эксплуатации продукта

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ABB i-bus

KNX
Commissioning
SA/S | 2CDC 505 056 D0208 69
Value object "Switch" on
bus voltage recovery
Options: not write
to write with 0
to write with 1
With this parameter, the output can be influenced after bus voltage recovery. As standard the
communication object
Switch receives the value 0.
•
not write : After bus voltage recovery, communication object Switch retains the value 0. The contact
position is not re-determined.
Please note
Before the very first download (device fresh from the factory), the value before bus voltage failure is not
defined. For this reason, the communication object
Switch is written with 0 and the contact is open.
If opening of the contact at bus voltage recovery before the first download (installation phase) is not
desired, this can be prevented by temporarily removing the KNX voltage.
•
to write with 0 : The communication object Switch is written with a 0 on bus voltage recovery.
The contact position is redefined and set based on the set device parameterization.
•
to write with 1 : The communication object Switch is written with a 1 on bus voltage recovery.
The contact position is redefined and set based on the set device parameterization.
Please note
Provided that no manual switching action has occurred, the communication object Status Switch
indicates the correct status of the contact position independently of the value of communication object
Switch .
The Switch Actuator draws the energy for switching the contact from the bus. Depending on the type of
Switch Actuator, about 10 to 30 seconds is required after bus voltage is applied before sufficient energy
is available to switch all contacts simultaneously, see
Technical data from p. 9.
Depending on the set delay time in the parameter Transmission and switching delay after recovery of
bus voltage in the General parameter window, the individual outputs assume the desired contact
position only after this delay has elapsed. If a shorter delay time is set, the Switch Actuator will only
switch the first contact when sufficient energy is stored in the Switch Actuator to immediately bring all
outputs safely to the required position should another bus voltage failure occur.