Product Description:

The M.1302.8438 is a servo feedback cable manufactured by Kollmorgen and supplied within the Kollmorgen Servo Cables series. It is designed to relay encoder position data from a servomotor to its drive so closed-loop motion axes in industrial automation can maintain precise velocity and position control. The cable forms part of the feedback chain that allows the drive electronics to detect the rotor angle in real time and synchronize it with commanded trajectories.

This model is supplied in a length of 3 m, providing enough reach for typical cabinet-to-motor runs while keeping signal attenuation low. The conductors are sized at 28 AWG, balancing signal transmission requirements with the flexibility needed in continuous-motion applications. A Hi-Flex outer jacket resists repeated bending cycles and cable-track abrasion on moving gantries or robots. The drive end uses a 45-degree angled plug that allows the harness to run parallel to cabinet walls, minimizing the required installation depth. The motor end uses a straight mating plug, allowing the cable to exit perpendicular to the encoder housing without placing lateral stress on the receptacle.

The assembly is categorized as a feedback cable, so its twisted pairs and shields carry low-level sensing signals rather than motor power. It carries absolute position information for single-turn and multi-turn encoders, supporting machines that require startup without homing or position tracking over multiple rotations. Differential analog signals in sine encoder format can pass through the cable with minimal distortion, preserving the drive’s ability to perform accurate sub-increment interpolation. For digital absolute interfaces, the conductors carry BiSS or EnDat 2.1 clock and data signals, enabling high-speed serial transmission of position values with embedded error checking.