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Parameter setting
Radio Actuator KNX RF S1R-B2 compact
• Version: 16.09.2020 • from application 1.0 •
Technical changes and errors excepted.
Before the drive mechanism of the master actuator is moved, the slave actuator
receives the command to move its drive mechanism to the safe position. As a
consequence, the slave remains in safe position or it moves back if it is not within the
safe range.
The master actuator knows from the communication object „Slave zero position
status” whether the drive mechanism connected to the slave actuator is already in a
safe position (then the master moves immediately) or not (then the master waits). Only
if the master actuator is informed that the slave drive mechanism is in a safe position,
it moves its drive mechanism beyond its own safe position.
Example:
The ventilation with the window shall take priority over the shading with the awning.
Therefore, the window is parameterised as master, the awning as slave. Both are
provided with a zero position sensor which reports whether the drive mechanism is in
a safe position or not.
The awning is now extended and the window shall be opened. The window knows the
status of the awning (“not safe position”) and therefore submits a master command to
the awning. This is the signal for the awning, to retract a little bit. As soon as the
awning has reached a safe position, there is an according feedback signal of the zero
position sensor of the awning. Only now the window opens.
Master and slave regularly exchange their positions (“safe“ or
“not safe”). By means of the monitoring period, you may adjust
the frequency of information retrieval. The selected period
should be shorter than the period which the monitored drive
mechanism needs to travel from the limit of the safe range (last
reported safe position) to a position where there is risk of collision.
If the drive mechanism does not receive a master/slave or zero position object, it
moves to the safe position. The same holds true for a bus voltage breakdown or for a
malfunction message from the zero position sensor (is valid for the parameterisation
as master and as slave).
Without movement range limitation:
Reference travel direction:
Behaviour after reset and download
• no action
• Up command (or Retract/Close)
• Down command (or Extend/Open)
Direction of reference travel
• in safe position
• in closed position
(move out shading)
• in open position
(window)
• shortest route
