Abstract: A universal controller for an automatic door system including a door carried on a frame for movement along a predetermined path of movement between open and closed positions. The universal controller includes a housing for mounting the controller in a stationary position relative to the door frame and an assembly including a processor carried by the housing for processing data operatively received from a plurality of sensors and relating to the operation of the movable door. The processor is configured to generate operational values which are transmitted to and control a drive motor used to move the door between the open and closed positions. The assembly further includes an arrangement for adjusting the operational values generated by the processor and transmitted to the drive motor. A modular harness connects the controller to the drive motor and to the sensors.

Abstract: An automatic door assembly including a sliding door and an electric motor drivingly coupled to the sliding door. The electric motor includes a clutch movable between a locked position preventing rotation of the electric motor and an unlocked position permitting rotation of the electric motor.

Abstract: An automatic door control system which uses microcontrollers to control four drive transistors and a drive motor connected in an H-bridge circuit. The microcontrollers use pulse width modulation to control the speed of the drive motor.