Technical data

QUICKTRONIC
®
Intelligent DALI DIM | Overview of dimmable control gears
7
2.2 DALI in comparison to 1…10 V and KNX/LON
Modern lighting technology requires a system that is as
fl exible as it is simple and one which concentrates on the
room-based light management system with few cost-effec-
tive components, simple wiring, and a user-friendly operat-
ing concept. For this purpose, the photometric industry has
developed the new digital communication standard for
lighting systems:
DALI closes the gap between the previous 1…10-V technol-
ogy and complex bus systems. On the one hand, DALI of-
fers a very simple local solution – on the other hand, how-
ever, it can also be integrated into a building management
system as a sub-system.
With the materials and means of traditional electrical instal-
lations and even with the widely used analog 1…10-V inter-
face, these requirements are challenging to achieve and
only at great expense. A multitude of components needs to
be used in order to modify a programmed scene while
simultaneously enabling fl exible group assignment and,
where possible, integrating this into a daylight-dependent
control.
2.2.1 DALI and 1…10-V properties
The defi ned physical properties at the interface as well as
the properties of the interface cable as the transmission
medium form the basis of every control system. Interfer-
ence of the data transmission is largely ruled out for DALI
thanks to a generously designed interference voltage dis-
tance as well as the wide ranges for digital “low” and
“high”. This means that shielded control lines are not re-
quired. As with the 1…10-V interface, the mains and control
inputs are galvanically separated in the ECGs. Safety extra-
low voltage (SELV) was intentionally not used in order to
make a cost-effective installation possible without having to
lay additional special lines and cable bushings. For exam-
ple, a 5-x-1.5-mm
2
NYM can be used for the main cable
and DALI.
Costs
Functions
1…10 V, DALI and KNX/LON overview
KNX/LON DALI 1…10 V
DALI and 1…10-V interface in comparison
DALI 1…10 V
Floating control input,
basic insulation
Floating control input,
basic insulation
Two-wire line (polarity-free) Two-wire line (with polarity +/-)
Addressing possible:
• Individually (max. 64 addresses)
• In groups (max. 16)
• All together
➔ Wiring in groups not
necessary
Cannot be addressed
• Wiring in groups is necessary
Scene memory (max. 16) Not possible
Individual addressing of the
DALI ECG
Not possible
Status messages from the
DALI control gears
• Lamp malfunctions
• Operating duration
• Dimmer setting
Not possible
Individual dimming options
• Saving the last dimming value as
the starting value
Not possible
“Switching” via interface External mains voltage change-
over switch (e.g. relay)
Additional features:
Corridor and Touch DIM Function,
emergency lighting (EL) and
POWER2LAMP possible
Not possible