In the drive technology field, single-cable solutions have been the hot topic among engineers for months. Some drive manufacturers have already tested this system so that it is ready for market, others are in the process of implementing this solution in their own systems, while others are only now evaluating if a single servo cable solution is feasible.
Until now, the servo motor and the servo controller have been connected by two cables, one servo cable for the power supply to the motor and one sensor cable for the transmission of location information. In the single-cable solution, the wires for the transmission of the sensor signal are integrated into the power cable, in other words, two cables are joined together to form a hybrid cable.
The prerequisite for using a single-cable solution between the servo motor and the servo controller is the use of a hardware-based encoder designed for this purpose. Since the encoder is permanently connected to the servo motor, this system must be made available to the end customer by the manufacturer of the servo motor. As part of this redesign, HELUKABEL®'s task as a cable manufacturer was to develop a functioning, long-lasting cable and produce it at their
factory in Windsbach/Germany. The issue of EMC, in particular, made this a big challenge, since the data pair integrated into the servo cable must be protected from interference created by the wires.