MOVABLE BARRIER OPERATOR

摘要

A movable barrier operator having improved safety and energy efficiency features automatically detects line voltage frequency and uses that information to set a worklight shut-off time. The operator automatically detects the type of do or (single panel or segmented) and uses that information to set a maximum speed of door travel. The operator moves the door with a linearly variable speed from start of travel to stop for smooth and quiet performance. The operator provides for full door closur e by driving the door into the floor when the DOWN limit is reached and no auto- reverse condition has been detected. The operator provides for user selection of a minimum stop speed for easy starting and stopping of sticky or binding doors. The operator provides for enabling and disabling a flasher module light in a predetermine d pattern.