Drive arrangement

A drive arrangement for the motorized movement of a tailgate of a motor vehicle, comprising at least one drive unit and a drive unit controller, the at least one drive unit having two drive connections for channeling out drive unit power, wherein the drive connections in an installed state are coupled in terms of drive to the tailgate,

• wherein a first drive unit is motor and spring-operated and has a drive unit motor as well as a drive unit spring, each acting on the two drive connections associated with the first drive unit in parallel,
• wherein the first drive unit is designed as a spindle unit, which is outfitted with a spindle/screw nut gearing for generating of drive unit movements and acting on the two drive connections associated with the first drive unit,
• wherein the first drive unit comprises a movement sensor for generating a sensor signal, representing movement information regarding a movement between the drive connections of the first drive unit,
• wherein the first drive unit is configured to be non-self-locking with respect to the two drive connections,
• wherein a second drive unit is solely spring-operated and has a drive unit spring, which acts on the two drive connections associated with the second drive unit,
• wherein the drive unit controller detects a predetermined deviation of the sensor signal of the movement sensor from a predetermined normal signal corresponding to the normal condition as an error condition and upon detecting an error condition carries out an error routine.