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

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Software "Venetian blind, input 20BD11" Functional description 4.2.4.4.3 Positioning and feedback settings Computing the blind height or the louver position The device has a easy-to-use and accurate positioning function. The device calculates the current position of the connected Venetian blind, roller shutter, awning or louver whenever these elements are adjusted either by manual or bus control. The calculated position value is a measure of the height of the blind or of the opening width of the venting louver (Figure 14). Figure 14: Positions defined as a function of the type of movement The device derives the positions from the configured travelling time since conventional drives do not provide feedback about their positions. Thus, the travelling time configured in the ETS is the reference for all position approaches and of basic importance for the accuracy of the position calculations. For this reason, the travelling time should be determined with great accuracy in order to achieve the best possible positioning results. For positioning purposes, the device calculates the movement time required as a function of the current position. Example 1... The roller shutter connected to the certain output has an overall travelling time of 20 s. The roller shutter is in its upper end position (0 %). It is to be positioned at 25 %. The device calculates the movement time required for approaching the desired position: 20 s × 0.25 (25 %) = 5 s. The output will then lower the roller shutter for 5 s and thus position the blind at height of 25 %. Example 2... The shutter connected to the certain output has an overall travelling time of 20 s. The shutter is in the 75 % position. I It is to be positioned at 75 %. The difference between the positions is 50 %. The device calculates the movement time required for bridging the difference between the positions: 20 s × 0.5 (50 %) = 10 s. The output will then lower the roller shutter for 10 s and thus position the blind at height of 75 %. With all the upward movements, the configured movement time extension is automatically added to the calculated movement time. Example 3... The roller shutter connected to the certain output has an overall movement time of 20 s. The roller shutter is in the 75 % position. It is to be positioned at 25 %. The difference between the positions is 50 %. The device calculates the unextended movement time required for bridging the difference between the positions: Order-No. 2165 00 Page 44 of 149
Software "Venetian blind, input 20BD11" Functional description 20 s × 0.5 (50 %) = 10 s. Taking the movement time extension into account (e.g. 10 %), the actual raising time is: 10 s × ((100 % + 10 % (extension) ) : 100 %) = 10 s × 1.1 = 11 s. The output will then raise the roller shutter for 11 s and thus position it at a blind height of 25 %. When the lower or upper end positions (0 % or 100 %) are approached, the movement time is always 20 % longer than the overall movement time. Example 4... The shutter connected to the certain output has an overall travelling time of 20 s. The shutter is in the 75 % position It is to be positioned at 100 %. The difference between the positions is 50 %. The device calculates the movement time required for bridging the difference between the positions: 20 s × 0.5 (50 %) = 10 s. As the movement is a limit position movement, the device adds 20 % of the total movement time: 10 s + (20 % : 100 %) · 20 s = 14 s. The output will then lower the roller shutter for 14 s and thus positions it safely at a blind height of 100 %. Example 5: The roller shutter connected to the certain output has an overall movement time of 20 s. The roller shutter is in the 50 % position. It is to be positioned at 0 %. The difference between the positions is 50 %. The device calculates the unextended movement time required for bridging the difference between the positions: 20 s × 0.5 (50 %) = 10 s. As the movement is a limit position movement, the device also adds 20 % of the total movement time: 10 s + (20 % : 100 %) - 20 s = 14 s. Taking the movement time extension into account (e.g. 10 %), the actual raising time is: 10 s × ((100 % + 10 % (extension) ) : 100 %) = 10 s × 1.1 = 15.4 s. The output will then raise the roller shutter for 15.4 s and thus position safely at 0 %. i The device executes position approaches only if a new position deviating from the current position is preset. i The device stores the blind or louver positions temporarily. The device can approach newly preset blind or louver positions only if the current positions are known. For this purpose, each output must be given the opportunity to synchronise itself whenever the supply voltage is switched on or after every ETS programming operation (physical address, application program, partial download). Synchronisation is performed with the help of a reference movement (cf. "reference movement"). i Position approaches in progress will be aborted in case of bus voltage failure. In case of bus voltage failure, the configured behaviour will be executed. Calculating the slat position (only with Venetian blinds) In the "Venetian blind" operating mode, the device always calculates the slat position so that the opening angle and thus the amount of 'light admitted into the room' by the Venetian blind can be adjusted. A new position approach by a Venetian blind will always be followed by a positioning movement of the slats. Thus, the slat positions last selected will be tracked or readjusted to a new value if a position change has taken place. In case of single-motor Venetian blind systems without a working position, the slats will be readjusted directly by a change of the Venetian blind height. For this reason, an adjustment of the slat position will always have an influence on the position of the Venetian blind itself (Figure 15). Figure 15: Example of slat positioning affecting the position of the Venetian blind (typical of slat type 1; analogous reaction for type 2) Order-No. 2165 00 Page 45 of 149
Page 1 and 2: KNX/EIB Product documentation Issue
Page 3 and 4: Product definition 1 Product defini
Page 5 and 6: Installation, electrical connection
Page 13 and 14: Technical data 3 Technical data Gen
Page 15 and 16: 4.2 Software "Venetian blind, input
Page 17 and 18: Software "Venetian blind, input 20B
Page 29 and 30: 4.2.4.3 Channel-orientated function
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Software "Venetian blind, input 20B
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4.2.4.5 Priorities for the output S
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Priority of sun protection with res
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Delay scene recall ? Yes No Softwar
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Forced position on, lowering / clos
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Appendix Gira Giersiepen GmbH & Co.
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Blind actuator 1-gang flush-mounted Order-No. 2165 00 - Gira

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