Method for controlling a door arrangement, as well as a door arrangement of this kind and a safety device therefor

A door arrangement comprising:

• a door leaf drive;
• lateral guides;
• a door leaf which is guided in the lateral guides and is, driven by the door leaf drive, and movable between an open position and a closed position, in a door closing plane of a door opening,
• a safety device which monitors a monitored area at least on one side, said monitored area being positioned in front of the door opening and being offset thereto and disposed in parallel to the door closing plane, and which safety device performs a failure routine when an object is detected in the monitored area and hence a collision of the object with the door leaf is immanent, wherein the safety device comprises:
• an object detecting means for detecting a current position of the object, a leading edge detecting means for detecting a current position of a leading edge of the door leaf, a door leaf direction detecting means for detecting the direction of movement of the door leaf, and a control means for initiating the failure routine as a function of the current position of the object and the current position of the leading edge of the door leaf as well as the detected direction of movement of the door leaf.

A safety device for a door arrangement comprising a door leaf which is guided in lateral guides and is, driven by a drive means, and is movable between an open and a closed position in a door closing plane of a door opening, wherein the safety device monitors a monitored area at least on one side, said monitored area being positioned in front of the door opening and being offset in parallel to the door closing plane, and performs a failure routine when an object is detected in the monitored area and hence a collision of the object with the door leaf is immanent, wherein the safety device comprises:

• an object detecting means for detecting a current position of the object;
• a leading edge detecting means for detecting a current position of a leading edge of the door leaf;
• a door leaf direction detecting means for detecting a direction of movement of the door leaf;
• and
• a control means for initiating the failure routine as a function of the current position of the object and the current position of the leading edge of the door leaf as well as the direction of movement of the door leaf.