Control devices

Control Devices

One of the most important benefits of DALI-2 is to introduce standardization of control devices for the first time (in Parts 103 and 3xx of IEC 62386).
The two categories of control device are:
► Application controllers
► Input devices


 

Application Controllers

► The “brains” of the system

► Use information from any source, make decisions and can send commands to the control gear

Application controllers can use information from any source, including:

  • Control gear
  • Input devices
  • Other application controllers
  • External devices/buses/systems

Application controllers can make decisions, and can send commands to control gear.

  • No other device can send commands to control gear

Single-master or multi-master allowed:

Single-masters Multi-masters
Only one allowed onthe DALI bus More than one can be used on the same bus
Receiver is optional  
May allow polling of input devices, or checking status of control gear Supports event-driven operation of input devices
  Uses a short-address

 

DALI version-1

Control devices are standardised in DALI-2, but did not exist in the DALI verison-1 standard. For this reason, there are no DALI version-1 control devices – there are just products that are designed to send commands to control gear, but have not passed any official DALI tests. The DALI version-1 logo should not be used on any control device. 


 

Input Devices

► Fairly simple devices that provide information to the system

► Examples include push-buttons, sliders, occupancy sensors, and light sensors

Input devices provide information to application controllers.

Input devices are multi-master.

They can be polled, but are normally used in event-driven mode.