opening direction 40 of the traction rod or driving rod 34 which is indicated in fig3 the motor driven drive unit 38 comprises a motor arranged within a housing 42 by which motor a drive element 44 can be moved in the opening direction 40 of the traction rod or driving rod 34 and in the opposite direction thereto the drive element 44 has a force transmission surface 46 which in a locked state of the locking device 16 is spaced apart by an idle stroke 48 from a force uptake surface 50 of a force uptake element 52 which is connected in positive and or non positive manner to the traction rod or driving rod 34 the motor driven drive unit 38 can be connected securely to the faceplate 36 by screws 54 in such case it is preferable for the motor driven drive unit 38 to comprise projections 56 which penetrate material apertures 58 in particular designed as elongate hole apertures in the traction rod or driving rod 34 in such case a front side of the projections 56 which faces the rear side of the faceplate 36 protrudes over a front side 60 of the traction rod or driving rod 34 so that the motor driven drive unit 38 on one hand can be connected securely to the faceplate 36 and on the other hand permits free movement of the traction rod or driving rod 34 between the motor driven drive unit 38 and the faceplate 36 the door arrangement 10 further comprises a sensor device 62 for contactless detection of a movement of the traction rod or driving rod 34 the sensor device 62 comprises.