M.1302.8303 Kollmorgen
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The M.1302.8303 is a CAT5e patch cord manufactured by Kollmorgen as part of their Servo Cables series. This cable is 30 meters long, features 8 conductors with a wire gauge of 28 AWG, and comes equipped with 8-pin RJ-45 plugs on both ends. It is fully shielded and uses a shell drain to shell drain shield connection.
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Product Description:
The M.1302.8303 cable is supplied by Kollmorgen within the Kollmorgen Servo Cables series. It functions as a dedicated network link between drives, controllers, and feedback devices in industrial automation. The assembly is intended for panel-to-panel routing inside gantries, robots, and multi-axis packaging equipment, where compact Ethernet wiring must follow moving cable chains. By carrying differential Ethernet signals through a preassembled harness, the product simplifies machine wiring and supports the deterministic communication required for coordinated servo motion.
Its total cable length of 30 m lets enclosure-mounted drives reach remote I/O panels without intermediate connectors. The CAT5e patch cord uses twisted, impedance-controlled pairs that support the 100 MHz data streams common in motion networks. Inside the jacket are eight insulated conductors that provide a complete Ethernet channel through four differential pairs. Factory-installed 8-pin RJ-45 plugs on both ends reduce field assembly variations and help maintain the required insertion-loss budget. Each copper strand uses a conductor size of 28 AWG, combining the flexibility needed for moving cable chains with the electrical properties required for digital communication.
Overall noise immunity is improved by a continuous foil-and-braid design, and the cable is shielded to limit electromagnetic interference from nearby motors and power conductors. The drain wire is bonded from end to end, providing a direct shell-to-shell drain path that helps keep enclosure ground planes at equal potential. Ethernet data uses the pin mapping 1 TX+/RX+, 2 TX-/RX-, 3 RX+/TX+, and 6 RX-/TX-. Pins 4, 5, 7, and 8 remain idle, which limits crosstalk from unused conductors. This wiring arrangement supports stable physical-layer performance in high-speed positioning systems where network traffic must remain synchronized with servo motion.
