Patent ID: 8633666

Claim:
A method for activating a trapping prevention function in an electrical closing system, with the trapping prevention function being designed to interrupt a movement of a closing part in a movement direction when it is identified that the movement of the closing part ( 2 ) is impeded by a trapped object, the method comprising: supplying successively detected values of a motor variable (I mot ) of a motor ( 6 ) which causes the movement of the closing part, with the motor variable (I mot ) providing information about a drive torque which is supplied by the motor ( 6 ); determining a gradient profile from the successively detected values of the motor variable (I mot ), with the gradient profile being ascertained with the aid of a derivation method which weights the individual successively detected values of the motor variable (I mot ) as a function of the order in which they were detected; and ascertaining a time for activating the trapping prevention function as a function of the determined gradient profile.