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OSRAM QUICKTRONIC INTELLIGENT DIM CFL User 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.