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: 100 / 174
Presetting a forced reference travel in the sun protection mode
If needed, a reference travel can be executed by forced-control in the sun protection mode at the beginning
of a shading cycle, if fixed or variable position values or scene positions are to be approached. The
execution of a reference travel by forced control at the beginning of shading can be used in a sun protection
positioning operation to ensure that the curtains or slats are moved synchronously by different outputs to
identical positions (e.g. in a long row of windows). Without the execution of reference travel by forced
control, there might otherwise be positioning inaccuracies with a negative effect on the overall appearance
of a building facade with the blinds let down.
A reference travel by forced control will always be executed in the sun protection mode, when the beginning
of shading is signalled for the first time via the "Sunshine/shading facade" object. Updates of the object
from 'sun is shining' to 'sun is shining' do not initiate a reference travel, if the output is still in the sun
protection position at this time.
A reference travel by forced control will always be executed for synchronization purposes as described and
also in such cases where the position data of the curtain or the slats are known. No reference travel by
forced control will be executed at the end of shading.
For the sun protection parameters to be visible, the sun protection function must be enabled on parameter
page "Ax – Enabled functions (x = number of output).
The reaction at the beginning of sunshine/shading must be configured for fixed or variable position preset or
for recalling an internal scene.
Set the parameter "Reference travel before every sun protection positioning operation ?" on parameter
page "Ax - Beginning of sun protection" (x = number of output) to "yes".
At the beginning of shading there is always a reference travel by forced control as described. The preset
position will be approached after the end of the reference travel.
Set the parameter "Reference travel before every sun protection positioning operation ?" on parameter
page "Ax - Beginning of sun protection" (x = number of output) to "no".
A reference travel at the beginning of sun protection will only be executed, if the position data are
unknown, for instance, after an ETS programming operation or after switch-on of the power supply. In all
other cases, the preset shading position will be approached immediately.
A reference travel is the time required for a travel movement into the upper end position increased by 20
% and additionally by the parameterized travel time extension. A reference travel is not retriggerable.
Variable position preset: No reference travel will be executed, if new position values are preset via the
bus while the sun protection is active.
"Blind" mode of operation: A terminated reference travel of for the height of the blind synchronizes at the
same time also the slat position.
