Fenceless industrial robot system

An industrial robot system comprising:

• a platform adapted to be positioned on a floor in a robot cell,
• an industrial robot positioned on the platform and including an articulated robot arm,
• a sensor system comprising two sensors, wherein each of the sensors is configured to detect motions within an angle of at least 90° in a horizontal plane, and
• two arms attached to the platform and arranged to move the sensors in relation to the platform independent of the articulated robot arm between a retracted position and an extended position and the sensors are located a distance of a least 0.5 m from the platform in the extended position,
• wherein the sensors are arranged to detect motions of an object within at least one safety zone defined in relation to the sensors when the sensors are located in the extended position, and the robot system comprises a safety control unit configured to adjust the speed of the robot if a moving object is detected in the at least one safety zone.