Venetian blind / shutter / awning / roof window

The sensor function "Venetian blind / shutter / awning / skylight" can be configured for the "push-button" sensor type. The ETS indicates up to three communication objects for the "Venetian blind / shutter / awning / roof window" function. The parameters can be used to determine the values the "Venetian blind" objects obtain when the push-button is pressed. A disabling function can also be activated.

The “Type of blind/shutter“ parameter can be used to select whether “Venetian blind“ or “shutter / awning / skylight“ are to be controlled. The selectable values of the “Command sequence“ parameter vary, depending on the setting.

The "Venetian blind / shutter / awning / skylight" function distinguishes between dual-area operation (UP, DOWN) and single-area operation (TOGGLE). The "Command on pressing" parameter defines the single-area or double-area blind function.

Dual-area operation means that e. g. the device transmits a telegram for upward movement if one channel is actuated and a telegram for downward movement if a different channel is actuated.

Single-area operation means the device changes the direction of the long-time telegram after each long actuation. Several short time telegrams in succession have the same direction.

Status

If the actuator can be controlled from several sensors, a faultless single-area operation requires that the long-time objects of the control elements are interlinked. The device would otherwise not be able to detect that the actuator has been addressed from another sensor, in which case it would have to be actuated twice during the next use in order to produce the desired reaction.

Operating concepts

For the control of Venetian blind, shutter, awning or similar drives, the device supports four operating concepts in which the telegrams are transmitted in different time sequences. The device can therefore be used to operate a wide variety of drive configurations.

Operating concept "Step - Up/Down - Step":

The "Step - Up/down – Step" operating concept replaces the "Short - Long - Short" operating concept.

When selecting the operating concept "Step – Up/down – Step", the device behaves as follows:

• Immediately on pressing the button, the device transmits a short time telegram. This stops a running drive and starts the time t1 ("long button actuation"). No other telegram will be sent if the button is released within t1. This short time serves the purpose of stopping a continuous movement.
  The time "long button actuation from" selected in the device should be shorter than the short time operation of the actuator to prevent jerky motion of the Venetian blind.
• If the button is kept depressed for longer than t1, the push-button will send a long-time telegram at the end of t1 to move the drive, and the time t2 ("slat adjustment time window") will be started.
• If the button is released within the time window, the device will send another short-time telegram. This function is used for adjusting the slats of a Venetian blind. The function permits stopping the slats in any position during their rotation.
  The "slat adjustment time window" should be chosen as required by the drive to completely rotate the slats. If the selected "slat adjustment time window" is longer than the complete running time of the drive, a pushbutton function is possible as well. This means that the drive is active only when the button is kept depressed.

Depending on the telegram utilisation of the DALI system, times shorter than 400 ms may lead to incorrect evaluations of button actuations.

• If the button is kept depressed for longer than t2, the device will not send another telegram. The drive remains on until the end position is reached.

Operating concept "Up/Down – Step":

The "Up/down – Step" operating concept replaces the "Long - Short" operating concept.

If the operating concept "Up/down – Step" is selected, the device behaves as follows:

• Immediately on pressing the button, the device transmits a long time telegram. The drive begins to move and the time t1 ("slat adjustment time window") is started.

Venetian blind actuators should generate a break when changing the direction of travel to prevent motor damage.

• If the button is released within the slat adjustment time window, the device will send a short-time telegram. This function is used for adjusting the slats of a Venetian blind. The function permits stopping the slats in any position during their rotation.
  The "slat adjustment time window" should be chosen as required by the drive to completely rotate the slats. If the selected "slat adjustment time window" is longer than the complete running time of the drive, a pushbutton function is possible as well. This means that the drive is active only when the button is kept depressed.
• If the button is kept depressed for longer than t1, the device will not send another telegram. The drive remains on until the end position is reached.

Operating concept "Step - Up/Down":

The "Step - Up/down" operating concept replaces the "Short - Long" operating concept.

If the operating concept "Step – Up/down" is selected, the device will behave as follows:

• Immediately on pressing the button, the device transmits a short time telegram. This stops a running drive and starts the time t1 ("long button actuation"). No other telegram will be sent if the button is released within t1. This short time serves the purpose of stopping a continuous movement.
  The time "long button actuation from" selected in the device should be shorter than the short-time operation of the actuator to prevent jerky motion of the Venetian blind.
• If the button is kept depressed for longer than t1, the push-button will transmit a long-time telegram to start the drive at the end of t1.
• No further telegram is transmitted when the push-button is released. The drive remains on until the end position is reached.

Operating concept "Up/Down - Step or step":

The "Up/down – Step or step" operating concept replaces the "Long - Short or short" operating concept.

If the operating concept "Up/down – Step or step" is selected, the device will behave as follows:

• Immediately after pressing the button, the device starts the time t1 ("long button actuation") and waits. If the button is released again before t1 expires, the device will send a short-time telegram. This telegram can be used to stop a running drive. A stationary drive rotates the slats by one level.
• If the button is kept depressed after t1 expires, the device will send a long-time telegram and start the time t2 ("slat adjustment time window").

Venetian blind actuators should generate a break when changing the direction of travel to prevent motor damage.

• If the button is released within t2, the device will send another short-time telegram. This function is used for adjusting the slats of a Venetian blind. The function permits stopping the slats in any position during their rotation.
  The "slat adjustment time window" should be chosen as required by the drive to completely rotate the slats. If the selected "slat adjustment time window" is longer than the complete running time of the drive, a pushbutton function is possible as well. This means that the drive is active only when the button is kept depressed.

Depending on the telegram utilisation of the DALI system, times shorter than 400 ms may lead to incorrect evaluations of button actuations.

• If the button is kept depressed for longer than t2, the device will not send another telegram. The drive remains on until the end position is reached.