Quality And Stability - Velbus VMB4RYLD Installation Manual

2. A push-button module converts this action into a pulse on the CAN bus.
3. A relay module reads this pulse and responds by closing the contacts, so
that the light turns on.
4. The relay module creates a feedback pulse on the CAN bus
5. The push-button module reads this feedback pulse and responds by
lighting the LED associated with push button 1.

QUALITY AND STABILITY

Velbus is a modular system in which each single module complements your
installation. In turn its failure can never block or damage the operation of the
overall system, contrary to centrally controlled systems. Each module is fully
independent because of its own processor. Each Velbus module monitors the
bus continuously and executes an action as required by the conditions set
within it.
The bus itself is based on the CAN-bus which is commonly used in the
automotive sector. The CAN-bus is very stable and by lowering the baud rate it
can effectively operate without problems over very long distances (up to 1.1
km using EIB cable).
The bus operates on pulses or packets of data. Even during the dimming of
lights or the activation of an "all off" function there is very little traffic on the
bus. This obviously has great advantages over other systems. Dozens of
simultaneous requests can be processed seamlessly (on/off, dimming,
moods ...) while sending of feedback pulses remains very fast. This style of
control also ensures that no unnecessary energy is consumed.
Configuration modules can be mounted anywhere along the bus cable (in
storage spaces, offices, bedrooms, and the like) allowing you to connect your
PC wherever you want to monitor the modules or make changes to their
programming. During these changes your Velbus system will continue to
function normally, without causing any hindrances to users.
The physical cabling of the bus may, if desired, run in a loop in order to make
the system even more resistant to bus cable ruptures. The bus power supply
voltage may vary between 12 V and 18 V.
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