PROPORTIONAL SYSTEM

It is an innovative transmission system, entirely studied and realised in all its parts from the ELTEC Automazioni firm.

In consequence of the pressure of a key, a proportional signal, produced by a Hall sensor, is sent to the system. As a result it is sent a proportional output signal that goes to excite a PROPORTIONAL MAGNET (MAPR).
With this new transmission system it is possible to graduate the movement of the pallet proportionally to the pressure of the key, with a resolution of 128 positions.

The realisation of this system begins in consequence of the wish, passed on to us by organ builders and organists, to be able to make even more expressive the electric organ; electric organ that is disadvantaged as regards as the mechanical organ just in the control of the opening of the pallet.

The result is surprising!

PROPORTIONAL MAGNETS

If ORGDRIVE-CP25 is the proportional system’s brain, the magnet is its heart.
Its job, after all, is to follow the movement of the key as closely as possible, enabling a gradual opening of the pallet.

WORKING:

The unit in the Console (Master) reads the position of the pressed keys and send the resulting data to the unit in the Organ (Slave).The Slave unit processes these data and, by means of proportional outputs cards , gives to every magnet the position in which it has to go.
The microprocessor of the control card of the magnet reads, thousandths time of a second, both the position of the pull-down of the magnet and the final position to reach (position that is directly proportional to that of the key) and constantly corrects the current values of the coils in order to bring or hold the pull-down in this position.

SPECIFICATIONS:

• Stroke: 8 mm
• Return number: 20 / sec
• Traction/contrast power: 1,5 Kg
• Weight: 790 grammi
• CE certification
• PATENTED
  

  REALIZATIONS

• Andria, Chiesa Sacro Cuore - Year 2003
  Proportional system + 61 proportional magnets MAPR1

• Cuneo, Laboratorio ELTEC - Year 2003
  Proportional system + 61 proportional magnetsMAPR2

• Santa Cruz, Auditorium of Tenerife - Year 2004
  Proportional system

• Roma, Chiesa S. Antonio dei Portoghesi -Year 2008
  Proportional system + 183 proportional magnets MAPR2

• Sollies Tucas, Eglise Saint Christophe - Year 2009
  Proportional system + 61 proportional magnets MAPR2

• Rovereto, Convento di S.Caterina - Year 2009
  Proportional system + 122 proportional magnets MAPR2
  
  
• Barcellona, Sagrada Familia - Year 2010
  Proportional system