Sectional door operator system

A sectional door operator system for opening and closing an opening, comprising:

• a door arranged to be moved between an open (O) and closed (C) position and comprising a plurality of horizontal and interconnected sections,
• a door frame comprising a first frame section at a first side of the opening and a second frame section at a second side of the opening, wherein the plurality of horizontal and interconnected sections are connected to the door frame,
• a drive unit system mounted on a section of the plurality of horizontal and interconnected sections, wherein the drive unit system is arranged to move the sectional door from the closed position (C) to the open position (O), wherein the drive unit system comprises at least a first drive unit comprising a first motor and at least a second drive unit comprising a second motor, and wherein the first drive unit and the second drive unit are mounted at different vertical sides of the horizontal and interconnected section and move along the respective first frame section and second frame section,
• at least one sensor device mounted on a section of the plurality of horizontal and interconnected sections, and at least one control unit being in operative communication with the drive unit system and configured to control the operation of the drive unit system based on sensor data from the at least one sensor device, wherein the sensor data relates to an angle (φ) of the door in relation to a true horizontal plane of the sectional door operator system and
• at least one first and second sensing element configured to provide operational data of the first and second motor to the at least one control unit, wherein operational data comprises information related to positions of the first or second motors along the respective first or second frame members,
• wherein the at least one control unit is configured to control the operation of the drive unit system by:
• receiving the sensor data,
• evaluating the sensor data,
• receiving operational data relating to the first drive unit or to the second drive unit from the first or second sensing element;
• evaluating the received operational data;
• and
• combining the operational data evaluation with the sensor data evaluation, and based on the combined evaluation, control the operation of the first drive unit and/or the second drive unit.