Blind actuator 1-gang flush-mounted Order-No. 2165 00 - Gira

Software "Venetian blind, input 20BD11"
Functional description
Since a preset slat position is to remain constant until the next change, the device will not
change the height of the Venetian blind, if the calculated movement time required for a change
of position lies within the configured slat moving time.
Similarly, the device accounts for the ratio of the moving times of slat and Venetian blind and –
in case of slat position changes – always recalculates the resulting Venetian blind position. If
the position feedback objects are used (cf. "Position feedback"), the device transmits the
Venetian blind positions changed by the adaptation also to the bus.
Example (Figure 15)...
The Venetian blind position is preset to 50 %. A change of the slat angle (100 %...0 %) initiates
the calculation of a new Venetian blind position which is also tracked in the position feedback
objects. If the device is to approach a new Venetian blind position of, for example, 47 % in this
case, the device will not perform a movement as the calculated travelling time lies within the
configured slat moving time and therefore coincides with the slat movement. A change of the
Venetian blind position to 55 % in this case triggers a Venetian blind movement as the change
does not lie within the slat movement (0 to 100 %).
In each position operation, the Venetian blind setpoint position refers to a slat position of 100 %.
In the event of a slat repositioning movement (0 to 100 %), the system will therefore report a
Venetian blind position below the desired position.
Exception: The Venetian blind setpoint position of 0 % (upper end position) is assigned to the
slat position of 0 %. The readjustment of the slat position will result also in this case in a change
of the Venetian blind height (brief downward movement). Only in this case will the actuator
report back a Venetian blind position above the Venetian blind setpoint position (Figure 16).
With slat type 1, the slats are generally horizontal when the Venetian blind is in its upper end
position. For this reason, the calculated slat position with a slat type 1 corresponds to the actual
opening angle only after the first slat is completely extended (100%).
Figure 16: Example of slat positioning with the Venetian blind in upper end position
(typical of slat type 1)
Example (Figure 16)...
The Venetian blind position is preset to 0 %. After an extended movement, the Venetian blind is
safely in the upper end position. A change of the slat angle (0 %...100 %) initiates the
calculation of a new Venetian blind position which is also tracked in the position feedback
objects. If the device is to approach a new Venetian blind position of, for example, 5 % in this
case, the device will not perform a movement as the calculated travelling time lies within the
configured slat moving time and therefore coincides with the slat movement. A change of the
Venetian blind position to 15 % in this case triggers a Venetian blind movement as the change
does not lie within the slat movement (0 to 100 %).
i The device executes slat position adjustments only if a new position deviating from the
current slat position is preset.
Order-No. 2165 00
Page 46 of 149