M.1302.8287 Kollmorgen
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The Kollmorgen M.1302.8287 is part of the Kollmorgen Servo Cables series and features a 1.0-meter shielded CAT5e patch cord construction with twisted pairs. This cable has 8 conductors with 28 AWG wire gauge and both ends are terminated with 8-pin RJ-45 plugs.
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Product Description:
The M.1302.8287 belongs to the Kollmorgen Servo Cables series and is supplied by Kollmorgen as a preterminated communication lead for Ethernet-based motion networks. Within an automation cell, it links servo drives, controllers, or I/O modules that rely on deterministic data exchange, allowing device synchronization without additional wiring steps. The cable is manufactured as a complete assembly to simplify installation and maintain the controlled impedance required for high-speed differential signaling.
The assembly is cut to a fixed length of 1.0 m, making it suitable for short jumper runs inside electrical cabinets where excess slack is undesirable. It uses CAT5e patch cord construction, so it supports 100 MHz bandwidth and Gigabit throughput for real-time communication between compatible drive controllers. Inside the jacket, 8 conductors are arranged as four balanced pairs; this arrangement matches standard Ethernet topologies and preserves signal symmetry. Each end is fitted with an 8-pin RJ-45 plug, enabling direct connection to drive or PLC network ports without field crimping. The conductors use a twisted-pair geometry that reduces electromagnetic induction and minimizes crosstalk between transmit and receive channels. A shielded braid and foil layer provides overall coverage and protects low-level differential signals from electromagnetic interference generated by nearby power cables and motor phases.
Individual conductors use fine-strand copper sized at 28 AWG, which keeps the bundle flexible enough to route through densely populated enclosures. Continuity between the metallic connector shells is maintained by a drain-to-drain connection, giving the shield a continuous grounding path when both connectors are secured to chassis-mounted sockets. Signal allocation follows the T568B-compatible map 1: TX+/RX+; 2: TX-/RX-; 3: RX+/TX+; 6: RX-/TX-, while pins 4, 5, 7, and 8 remain idle to avoid introducing reflections or impedance discontinuities when they are unused in servo bus applications.
