OSRAM OPTOTRONIC Constant current LED power supplies with 3DIM - Manual (Page 5)

1. Description
DESCRIPTION
The 3DIM feature offers three control and dimming func-
tionalities in a single electronic control gear.
While the DALI ® interface is used for integration into bi-
directional telemanagement systems, the StepDIM func-
tion utilizes an external control line to switch between two
lighting levels. This enables an easy replacement for half-
night switch solutions (Bi-Power) of conventional control
gears. The third option – the autonomous, self-adjusting
AstroDIM function – reduces the lighting level without any
external control signal. The control software executes a
dimming profi le preset by OSRAM or specifi ed by the user
via the 3DIM Tool.
OSRAM has implemented the 3DIM feature in two control
gear families, covering the main fi elds of application:
• POWERTRONIC
® (PTo) for HPD lamps
• OPTOTRONIC ® (OT) for LED modules
3DIM ECGs can be integrated into existing infrastructures
at no added cost (see fi gure 1).
Operating modes
Energy saving through dimming
✓ ✓ ✓
Integration into existing installations (✓) 2) ✓ ✓
Flexibility to control different light points
✓
Bi-directional communication in
telemanagement systems ✓
Autonomous dimming
✓
Use of existing Bi-Power approach
of CCGs (half-night switch) ✓ 1)
Figure 1: Suitable infrastructures for the use of 3DIM ECGs.
Figure 2: Comparison of the 3DIM functionalities.
1) In mixed installations, special measures need to be taken in the setup of the luminaire (see chapter 4.2 StepDIM).
2) DALI must be already available in the existing installation to use the DALI mode of the 3DIM ECG.
5
DALI AstroDIM StepDIM
DALI AstroDIM StepDIM
Required infrastructure
Tele-
manage-
ment
Wiring for
ON/OFF +
control line
Wiring for
ON/OFF
3DIM light management
DALI ®
Digital interface for integration
into telemanagement systems
StepDIM
Dimming via an external control line
AstroDIM
Dimming without an external control
signal, via an internal timer