APPLICATIONS DALI MCU
4. Installation
The installation used in our example (figure 2) should be
done as follows
The mains supply to the luminaires and to one of the two
DALI MCUs control devices may run through the same or
through different phases (by means of a single conductor or
by a 5-pole NYM cable).
In our circuit, one of the two DALI MCUs control devices
must be supplied with 230V mains power. The second
control device will operate without a separate mains supply
in the same control circuit. With this setup, you can control
up to 25 ECG independent of their power consumption. Each
DALI ECG comes with the interface that has a power
consumption of approx. 2mA. The internal power supply of a
DALI MCU connected to the mains will provide approx.
52mA – enough to supply up to 25 ECG and another DALI
MCU not connected to the mains.The following wiring
diagram (figure 3), for example, shows that the control
device labelled “Door A” has a mains connection. Likewise,
the control device “Door B” could get the mains connection
instead. This wiring diagram is based on the use of a 5-pole
NYM cable and supply for the entire lighting system through
one Phase (L and N).
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