The “GEARMOTORS DN 24” are installed exclusively on overhead doors De Nardi. Two leading companies that provide a service to the highest of quality and safety. The innovative automation device De Nardi is the thinking mind of the whole system: it manages the speeds to reduce the mechanical stress of the motors and gates; it segnals the archievement of the working cycles limit to require the maintenance; it also deals with the management of a long series of functions, including: lock and unlock buttons, opening by a photocell, reversal of the motor controlled by the anti-crushing rib, photocells, buffer batteries for emergency operation in the event of a power failure.

1 Motor block
2 Photocell
3 Mechanical rib
4 Automation device
5 Supply from breaker switch
6 Internal pushbutton
7 Radio receiver
8 Flashing light
9 Antenna
10 External key selector
11 Two-channel transmitter or four-channel transmitter

Automation consists of one or two electromechanical locks Faac with motor 230V A.C. and high resolution encoder, connocted to the overhead door by two telescopic arms and equipped with:
- limit switches for opening and closing,
- internal and/or external emergency release (commanded from the lock) for the handling in case of absence of the mains voltage.
The automation is supplied wired for the devices to the side described, with junction box to fix to the wall on the right side (internal view) and complete with power cable “schuco” type.
The electronic control unit has a detection system of the stress profile and self regulation of engine delivered to the stress profile and self regulation of engine delivered to the engine during the cycle of opening and closing in order to limit the impact forces in compliance as provided by law.
It’s also possible the automatic timed closing and the regulation of the engine power.
The mobile door is supplied with a bumper rubber to protection of the three sides.