The steering control system produced by Keltronik is used for the automatic steering of industrial trucks. The line driver LDU generates an alternating current in the contact wire installed under the road surface, which the vehicle can follow.
This wire runs in a closed loop from the line driver over a maximum length of 1200m and back again. If a longer distance is required, an additional line driver with a separate contact wire must be installed. The electricity generates a magnetic field in the contact wire with which the industrial truck is controlled.
The magnetic field is detected by two or more antennas attached to the underside of the vehicle. These are connected to a control unit IFE, which controls the steering. The entire process is continuously monitored by the control unit and the truck is stopped when an error occurs.