Lens Types; Dali - ABB Busch E-contact System Manual

4.1.3

Lens types

Fig. 17: Lens types
The devices of ABB are fitted with Fresnel lenses. Compared to normal lenses, Fresnel lenses
offer the advantage of an increase in the amplification of infrared radiation.
[1] Normal lens (hemispherical)
[2] Fresnel lens
4.1.4

DALI

DALI (Digital Addressable Lighting Interface) is comprehensive manufacturer interface standard
for dimmable electronic ballasts. DALI offers increased functionality with easier handling. A
maximum of 45 DALI operating devices can be controlled individually or together.
A single 2-wire control line for up to 45 operating devices offers several advantages.
The planning of the control line and the power supply can take place completely separate
■
from each other.
– Alternatively, the control line can be accommodated in one cable together with the
power supply line. E.g. 5 x 1.5 mm
No relays are necessary for switching of the lamps. Switching and dimming is carried out
■
exclusively via the control line.
The devices from ABB use the DALI broadcast mode. This means that all operating devices
■
connected to the DALI control line are controlled together.
The deactivation of the DALI buses allow the devices to switch totally free of voltage and are
■
therefore free of power consumption.
The DALI extension units do not require a separate mains supply. They can be directly
■
connected to the DALI control line.
System Manual 2CKA001473B9577
Information about planning and application
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