Patent ID: 7034486
Filing Date: 2006-04-25
Classification: E05F,E05Y,H02H

Abstract:
1. In an operator for a barrier moveable between open and closed positions, said operator including a motor and a control unit for controlling operation of said motor, said control unit comprising means for sensing a parameter which corresponds to a force exerted by said barrier when moving between open and closed positions, a motor control circuit for controlling operation of said motor, a controller in communication with said motor control circuit and said means for sensing said parameter and a user interface operably connected to said controller including means for setting a first force limit to be exerted by said barrier when moving between said open and closed positions, the method including the steps of: operating said user interface to set a first force limit to be exerted by said barrier when moving between said open and closed positions in one direction of movement; and causing said controller to automatically set a second force limit to be exerted by said barrier when moving in the opposite direction, said second force limit having a value based on the value of said first force limit.