Description
KNX/DALI Gateway plus N
These KNX/DALI Gateways are KNX devices with two independent
DALI interfaces. Up to 64 DALI actuators (e.g.
ECG with DALI interface) and additional DALI sensors
(e.g. DALI key interface, presence detectors, etc.) can be
connected per channel.
DALI (Digital Addressable Lighting Interface) is a bidirectional
communications interface to IEC 62386, whose
specification was chosen by manufacturers for electronic
ballasts. It not only receives, for example, switching and
dimming commands, but also transmits status information
such as failure of an illuminant or reporting of a
detected error in the ballast. The KNX/DALI Gateways enable
communication with up to 64 DALI actuators per
channel. These can be connected and dimmed in groups.
They also make it possible to record and transfer DALI
status and error messages. An individual name, a group,
parameter and scenes are assigned to individual DALI
ECG during commissioning with the ETS (Engineering
Tool Software). DALI sensors are also assigned to groups
in the ETS (for this, go to the application program description).
The integrated power supply unit supplies the gateway
electronics and generates the DALI bus voltage. It facilitates
operation of the gateway and direct switching and
dimming of all DALI ECG's controlled via the DALI interface,
even if the gateway has still not been operated with
the ETS or if communication via KNX is interrupted. For
this, the devices have a key (figure 2, A3) on the front to
disable or enable "Direct Mode". If the key is first held
down, then the display (A5) indicates direct mode by "d".
Then, all lights are switched on/off (tap the key) or
dimmed (hold the key down) together by the key pair
(A7 and A8) and controlled by the DALI bus line via the
respective channel A or B. The LED (A4) indicates the
switched status of the connected lights. If the "Direct
Mode" key is held down for a second time, then the "d" in
the display goes out and the Gateway is again in bus
mode [display b] or in standalone mode, if KNX communication
is unavailable.
The devices have a voltage detector during initialization,
which detects whether a voltage has been applied to the
DALI terminals incorrectly.
The DALI power supply feeds both ECG and sensors; verify
that the maximum permissible current drain by all
connected DALI devices is not exceeded.