Cable length and angle transmitter for Demag AC 615

The cable length and angle transmitter, part number 77820473, monitors the boom position and hoist cable extension on Demag cranes. This component provides continuous data to the Load Moment Indicator (LMI) and crane control systems, allowing the operator to track the current configuration of the boom and the load handling status during operation. By measuring the extension of the cable up to 60 meters, it enables the LMI to calculate the safe working load limits based on the specific boom geometry.

This unit is compatible with the Demag AC 615 all-terrain crane. It integrates a retractable cable reel mechanism with a position sensor to track cable length and an inclinometer to determine the boom angle. These sensors convert physical movement into electrical signals that the crane computer uses to manage safety parameters and prevent overloads during lifting tasks.

Transmitters of this type serve as the primary feedback loop for the crane's safety system. They translate the mechanical state of the boom and winch into digital or analog inputs, ensuring that the control system maintains accurate awareness of the crane's reach and capacity at all times. Proper calibration of these sensors is required to maintain the accuracy of the load monitoring system and ensure the machine operates within its designed safety envelope.