Safety system

A safety system for localizing a movable machine, the safety system comprising a safety controller, at least one radio location system, and at least one sensor for position determination,

• wherein the radio location system has radio stations arranged as stationary,
• with at least one radio transponder being arranged at the movable machine;
• or with the radio location system having radio transponders that are arranged as stationary, with at least three radio stations being arranged at the movable machine
• with position data of the movable machine being able to be determined by means of the radio location system;
• with the position data being able to be transmitted from the radio station or from the radio transponder of the radio location system to the safety controller,
• and position data of the movable machine being able to be determined by means of the sensor;
• and with the safety controller being configured to compare the position data of the radio location system and the position data of the sensor as uniquely identified by two mutually independent features, and to detect of an agreement of the compared position data of the radio location system with the position data of the sensor,
• whereby the compared position data provides a position indication determined by a redundant and diverse system,
• and whereby outputs of the safety controller are redundant safety outputs,
• and wherein the compared position data provides an indication of a safe point of interest as an agreement of the two uniquely identified mutually independent features, and if there is agreement of the compared position data sufficient to associate the position data of the radio location system and the position data of the sensor with one another, a change of a safety function of the safety system takes place.