Patent ID: 7173389

Claim:
A method for adjusting force sensitivities used by a barrier operator system during closure of a sectional barrier moveable between horizontal and vertical limit positions comprising: monitoring a position and an actual travel force for the barrier as the barrier moves between the limit positions; designating a danger zone position between the limit positions; setting a danger zone from the danger zone position up to about 12 inches from one of the limit positions; comparing a pre-set operator force threshold value to said actual travel force while moving the barrier from one of the limit positions toward said danger zone position; comparing a recorded operator force threshold value to said actual travel force value while moving the barrier from said danger zone position toward the other of the limit positions, wherein said recorded operator force threshold value is less than said pre-set operator force threshold value; saving said actual travel force value plus an offset as said recorded operator force if said recorded operator force is less than said pre-set operator force; implementing corrective action if said actual travel force exceeds one of said threshold values; and adjusting said recorded operator force threshold value used in said danger zone to increase the force sensitivity thereof.