ABB i-bus KNX Product Manual page 49


ABB i-bus KNX
Start-up
Communication object no. 1 for
wind alarm
Communication object no. 2 for
wind alarm
Communication object no. 3 for
wind alarm
Communication object for rain alarm
Communication object for frost alarm
Options:
These parameters activate the weather alarm functions and the corresponding communication objects.

Activated: The parameters for the monitoring times of the weather alarms appear.
Note
Wind, rain and frost alarms are only activated when a position for the weather alarm was activated in
parameter window A: Safety/Weather:
Example:
Position on wind alarm
Option: Activated - Op
Monitoring period wind alarm in s
Monitoring period rain alarm in s
Monitoring period frost alarm in s
[0...1,000] (0 = monitoring deact.)
Options:
These parameters determine the cyclic monitoring time for wind, rain and frost alarms in seconds.
The weather alarms of the weather sensors are cyclically monitored by the JRA/S.
If the weather sensor sends the telegram value 0, there is no weather alarm. The JRA/S expects this
signal. If the signal is not received within the parameterized monitoring period, it can be assumed that the
sensor is defective or the bus line has been interrupted. The blind/shutter is moved to the parameterized
alarm position. The operation is inhibited.
If the weather sensors send the telegram value 1 (weather alarm), the blind/shutter immediately moves to
the parameterized alarm position. The parameter Monitoring period rain alarm in s or Monitoring period
frost alarm in s is displayed, as soon as the parameters Communication object for rain alarm or
Communication object for frost alarm have been set with the option Activated.

0: Cyclic monitoring is deactivated.
Note
The monitoring period in the JRA/S should be selected to be at least three to four times as large as the
cyclic transmission time of the sensor. In this way, the immediate absence of a signal, e.g. due to a high
bus load, does not immediately result in the blinds/shutters being moved to the alarm position.
Deactivated
Activated
0...1,000
JRA/S | 2CDC 506 051 D0204 47