Blind/Slat Settings - ABB i-bus KNX Product Manual

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ABB i-bus KNX
Planning and application
4.2

Blind/slat settings

Control with slat adjustment
Two methods are available for controlling the slats and calculation the turning times.
1. Slat adjustment time using the duration of a slat adjustment
In this method, the number and duration of the slat adjustment(s) to tilt the slats from completely
closed to completely open are specified. The maximum number of slat adjustments is used to
determine the current position of the slats during operation. The maximum number of slat adjustments
must be counted by the commissioner and entered as a parameter.
2. Slat adjustment time using duration to turn slats
In this method, the time is first determined which the slat requires to tilt from completely closed to
completely open. Then the desired number of slat adjustments (steps) is entered, with which the slats
are to be adjusted from fully closed to fully open. The JRA/S then calculates the time for a slat
adjustment.
Limitation of the traveling range
For specific applications, the traveling range can be limited for the user.
Example
The opening and closing of windows, doors or skylights is limited to a range of 0...20% opening for a
specific circle of users, whilst the janitor is able to operate them fully.
In addition to a limitation of the traveling range, it is possible to specify whether the upper and lower
limitation is to be executed for direct telegrams and/or for automatic telegrams.
Dead times
In rare cases, mechanical dead times of the blinds/shutters or slats must be compensated. Parameters are
available for this, which compensate the dead times, allowing accurate positioning.
Important
Usually, the standard settings of these parameters are sufficient for correct operation. If changes are
made to these parameters in the user-defined setting, then the technical data of the appropriate
blind/shutter manufacturer must be observed.
Tensioning of the blinds/shutter/slot positioning
This function is used to tension or tauten textile blinds/shutters or to adjust the so-called slot positioning on
slat curtains. In so doing, the blind/shutter is stopped at the end of a DOWN movement and moved in the
opposite direction for a parameterizable time. In so doing, for example, awning clothes or skylights and
ventilation slots on a slat curtain can be adjusted.
JRA/S | 2CDC 506 051 D0204 113