System and method for controlling activating actuator motors for various mechanisms, such as roller shutters, awnings and movies screens

In a system for detecting a predefined level of resistance in motor activated drive systems for activating devices movie screens, rolling gates, jalousies, awnings and movie screens in a predetermined direction or path;

• means sensing predetermined characteristics of the electric motor when the electric motor is activated to move the drive in the predetermined path;
• means detecting a predefined change in the motor characteristics due to the blockage or resistance;
• means deactivating the electric motor when a predefined level of resistance is detected along the predetermined path;
• means blocking movement of the drive by the electric motor in said predetermined direction for a predetermined time period;
• and
• means connecting the motor to the drive with a predetermined mechanical play which permits the rotation of the drive a limited angular extent wherein the angular rotation serves as a criterion for turning off the electric motor.

In a system for detecting a predefined level of resistance in motor activated drive systems for activating devices movie screens, rolling gates, jalousies, awnings and movie screens in a predetermined direction or path;

• means sensing predetermined characteristics of the electric motor when the electric motor is activated to move the drive in the predetermined path;
• means detecting a predefined change in the motor characteristics due to the blockage or resistance;
• means deactivating the electric motor when a predefined level of resistance is detected along the predetermined path;
• means blocking movement of the drive by the electric motor in said predetermined direction for a predetermined time period;
• means connecting the motor to the drive with a predetermined mechanical play which permits the rotation of the drive a limited angular extent wherein the angular rotation serves as a criterion for turning off the electric motor;
• and
• said drive system including a roller shaft and drive shaft driven directly by drive and means providing a mechanical play between roller shaft and drive shaft whereby drive shaft can continue to rotate by the extent of the play when the roller shaft has stopped rotating as a result of resistance in the predetermined path.

In a method for detecting a predefined level of resistance in motor activated drive systems for activating devices movie screens, rolling gates, jalousies, awnings and movie screens in a predetermined direction or path;

• sensing predetermined characteristics of the electric motor when the electric motor is activated to move the drive in the predetermined path;
• detecting a predefined change in the motor characteristics due to the blockage or resistance;
• deactivating the electric motor when a predefined level of resistance is detected along the predetermined path;
• blocking movement of the drive by the electric motor in said predetermined direction for a predetermined time period;
• and
• the drive is a tubular slide-in drive, wherein the electronical components including the micro controller which is necessary for controlling the stopping is provided within the tubular slide, and wherein the roller shaft comprises a mechanical play within the tubular slide-in drive of approximately 20-40°.