
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: 116 / 174
'Fabric-stretching' function
In the shutter/awning mode of operation, the Fabric-stretching function can be activated. The Fabric-
stretching function permits stretching the fabric of an awning tight after lowering. The fabric-stretching
function can also be used with shutters to re-open the slits of the shutter curtain after a downward
movement into the lower end position.
If activated in the ETS parameters, fabric stretching is executed during each downward travel after stopping
and after the parameterized changeover delay has elapsed. The curtain is then 'stretched' by moving briefly
into the opposite travel direction (cf. Fig. 40).
downward travel
brickwork
awning-case
fabric
awning linkage
fabric-stretching travel
fabric (stretched)
brickwork
awning-case
awning linkage
Fig. 40: Fabric-stretching in an awning
The downward travel can be triggered by any of the following events: Long-time, short-time or position
telegram, forced position, safety or sun protection function, central telegram or scene recall and also the
manual control.
Sheet- stretching is never effected in upward travel movements.
Fabric stretching affects the determination of positions and the position feedback since a fabric-stretching
movement changes the position of a shutter or an awning. In a positioning move into the lower end
position (100 %), the position value reported back after the fabric-stretching operation will always be a
smaller one.
Fabric-stretching cannot be parameterized in the blind or louver modes of operation.
Activating the fabric-stretching function
The fabric-stretching function can be activated independently for each shutter or awning output on
parameter page "Ax – Enabled functions" (x = number of output).
The mode of operation selected must be the "Shutter/awning" mode.
Set the parameter "Fabric-stretching function" to "enabled".
Parameter page "Ax – Fabric-stretching" is enabled and the fabric-stretching function is activated.
Fabric-stretching cannot be parameterized in the blind or louver modes of operation.