Planning And Application; Bus Voltage Recovery; Ets Reset - ABB ES/S 4.1.2.1 User's Product Manual

ABB i-bus KNX
4 Planning and
application
4.1

Bus voltage recovery

4.2

ETS reset

© 2010 ABB STOTZ-KONTAKT GmbH

Planning and application

Application examples and practical tips on the top of temperature control etc.
can be found in the Application manual Heating/Ventilation/Air-Conditioning
at www.abb.de/knx.
General
The behaviour at bus voltage failure can be parameterized. The corre-
sponding object values are set. For exceptions see Table, page 51.
Time-dependent functions are non-functional and must be restarted,
e.g. valve purge.
Status communication objects are sent as long as the option after
a change or after a change or request has been set.
The sending delay is only active at bus voltage recovery!
A bus voltage failure < 5 seconds is a reset and does not lead to defined
behaviour after bus voltage recovery.
Forced operation is re-established and executed as a priority. All other
priorities, e.g. blocking and valve purge are reset.
Control of valve drives
The purge cycle restarts (if activated).
The value parameterized for bus voltage recovery is set with the control
value priority and will be replaced if a new control value is received.
What is an ETS reset?
Generally an ETS reset is defined as a reset of the device via the ETS.
The ETS Reset is initiated in the ETS3 under the menu point Commissioning
with the function Reset device. This stops the user program and it is re-
started. This means that all states set beforehand are lost. The device is re-
set to the original state (control value 0 % and timer are restarted).
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