Discrete Switch Panels (RS485)

To support the range of graphic switch
panels for passenger and cabin/galley
applications, we produced a series of
discrete switch panels. Offered in a
matching style, the panels can be
configured to function in a number of
different operational modes.

Each switch element has the ability to offer both alternate and momentary action
through a remote set of contacts. Advanced functions such as timed or delay actions
are also programmable within the switch module. Each switch is designed to provide
remote operation via the RS485 digital bus to relays appropriately located elsewhere
in the aircraft.

This reduces the cost and quantity of cabling required in the aircraft and allows the size
of the Discrete Switch Panel to be minimized. The backlight for each button can be used
to indicate either the state of the switch, or the device it is controlling.

A number of switches may be linked and interlocked such that pressing any one switch will
cause all others in the interlocked group to release. The modular concept of each switches’
internal circuitry permits different configurations of switch element functions to be grouped
for specific applications. In keeping with our system approach to minimize the number of
LRU components per aircraft shipset and simplify the time consuming definition phase, the
pin configuration of each interface connector remains constant.

This approach, welcomed by aviation design engineers, accelerates the process of issuing
important documentation to production departments. Laser etched legends and icons
produce pin sharp information on the function of the button. Status and backlight
illumination, generated from miniature LED indicators, create a pleasing and functional
effect without the build up of heat, offering a ‘cool to touch’ panel.