ZK1090-3191-1080 by Beckhoff

The ZK1090-3191-1080 cable is manufactured by Beckhoff for the ZK Motor Cables series. It is a preterminated hybrid line that carries motor power and feedback signals between an AX series servo drive and its companion synchronous motor in industrial automation cells. Using a single molded connector set, the assembly reduces panel wiring time, preserves signal integrity, and supports dynamic motion sequences in packaging, printing, and material-handling machinery.

Internally, the cable follows a Cat.5 topology, so the twisted-pair cores meet the impedance and attenuation limits required for 100 Mbps Ethernet-based drive communication. Its physical layout of 4 × 2 × AWG26 consists of four balanced pairs, each composed of 26-gauge conductors that limit bulk while still accommodating encoder currents. Each conductor has a cross-sectional area of 0.14 mm² (AWG26), balancing flexibility with current-carrying capacity for Hall sensors and brake release lines. The overall jacket diameter is 5.9 mm, allowing tight routing through drag-chain channels without exceeding typical bend radii. The cable has a fixed length of 8.00 m, eliminating the need for field trimming.

The polyurethane outer sheath and polyethylene core insulation combine with double foil-braid shielding to provide a wire-to-shield test voltage of 1500 V DC, offering protection against inverter voltage spikes. A braid coverage ratio of 90% keeps common-mode emissions low, which is important when motors operate near sensitive I/O. The loop resistance of 280 ?/km limits voltage drop on sensor supplies, while the rated system voltage of 60 V matches typical low-voltage auxiliaries such as motor temperature sensors. Additional electrical characteristics include mutual capacitance of 51 pF/m, ground capacitance of 1600 pF/km, and a signal propagation time of 5.08 ns/m. These values support fast pulse edges without signal reflection over the fixed cable length.