Switch/shutter actuator 8/4gang 16A RMD
75318003
Switch/shutter actuator 16/8gang 16A
RMD
75310002
Technical
Documentation
© Berker GmbH & Co KG 2007
Version: 04.04.2007
Part 5
(Subject to prior change)
75310002.doc
Seite: 69 / 174
Presetting the behaviour in case of bus voltage failure
The parameter "Behaviour in case of bus voltage failure" can be preset separately for each output channel
under "Ax - General" (x = number of output). The parameter defines the behaviour of a shutter output if only
the bus voltage fails. The parameterized behaviour will not be adopted, if a manual control mode is active at
the time of bus failure (state LEDs blinking in case of temporary or permanent manual control).
Depending on the selected mode of operation, the ETS adapts the designations of the parameter settings
("raising"
↔
"opening the louver" / "lowering"
↔
"closing the louver").
Set the parameter to "stop".
In case of bus voltage failure, the actuator switches the relays of the output to the "stop" position. A
downward travel movement, if any, will be interrupted.
Set the parameter to "raising" or "opening the louver".
After bus voltage failure, the actuator raises the curtain or opens the venting louver.
Set the parameter to "lowering" or "closing the louver".
After bus voltage failure, the actuator lowers the curtain or closes the venting louver.
Set the parameter to "position approach".
In case of bus voltage failure, the connected drive can approach a position specified by further
parameters (0…100 %). If blinds are controlled with the device, the slats can be positioned
independently. The shutter actuator performs a reference travel before the position approach, if the
current position at the time of bus failure is unknown (e.g. due to power supply failure or to previous ETS
programming).
Set the parameter to "no reaction".
In the event of bus voltage failure, the relay of the output shows no reaction. Motions still in progress at
the time of failure will still be completed as long as the mains voltage supply is still on.
Safety, forced position or sun protection functions (independent of the selected priority) remain active
even after a bus voltage failure as long as the mains voltage supply is still on. These functions will
therefore be executed again at the end of a temporary or permanent manual control (if enabled in case of
bus failure) even if there is no bus voltage.
When the still ongoing motion or the motion parameterized in case of bus voltage failure has come to an
end, the outputs can no longer be activated except by manual control (if the mains voltage is on and if
manual control is enabled) or by bus/mains voltage return.
A bus voltage failure will in any case result in a stop of all time functions. Thus, all scene recalls in the
delay phase will be aborted and all delay times for sun protection and presence will be ended by ignoring
the object value last received and still in the delay phase. A telegram update received shortly before bus
voltage failure is then lost, if the corresponding delay has not yet elapsed.
In the event of a mains voltage failure, all relays of the actuator will always drop out ("stop) independent
of the bus voltage condition. In this state, the outputs are no longer selectable. Time functions (scene,
sun protection and presence delays) are not interrupted, if only the mains voltage fails.