OSRAM QUICKTRONIC INTELLIGENT DIM CFL - Manual (Page 37)

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3.2.6 Asynchronism/Automation of the system
The increased use of DALI ECGs in button operation shows again and
again that in systems with
• not completely sinusoidal supply voltage (e.g. electronic dimmer on
the same mains supply),
• excessively long line lengths or
• high DALI ECG count (more than 6 ECGs per TouchDIM applica-
tion)
increasing results in asynchronism of the connected DALI ECGs. To
consistently prevent asynchronously running lighting systems in prac-
tice, the permissible number of DALI ECGs is limited to 6 units.
3.2.6.1 Prevention/Remedying of asynchronism
With the aid of the DALI repeater that is described in more detail in the
context of the LMS (Light Management Systems) portfolio (see
www.osram.com/ecg-lms), up to 64 ECGs can easily be operated in
the TouchDIM function without having to be concerned about asyn-
chronism. Without the repeater, the TouchDIM application is however
only restricted to floor-standing luminaires or small offices.
3.2.6.2 Synchronization
For physical reasons a TouchDIM can work asynchronously, i.e. the
switching status and dimming direction of the separate luminaires are
different. The following steps help in the synchronization of a Touch-
DIM system:
1st. step: Longpress (> 0.5 s)
! All luminaires switch on
2nd. step: Shortpress (< 0.5 s)
! All luminaires switch off
3rd. step: Longpress (> 0.5 s)
! All luminaires switch on and dim
4th. step: Double-click
! Save dimmer setting (if required)
After these four steps – long–short–long–double-click – the ECGs
again behave synchronously.
Note:
TouchDIM was developed for manual control and is not suitable for
automation, e.g. for connecting to a PLC.