ZK4000-2711-2250 Beckhoff
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The Beckhoff ZK4000-2711-2250 is part of the ZK Motor Cables series and is compatible with the AX2500 drive. This cable features a conductor format of 4 by 1.0 mm² plus 2 by 1.0 mm² and has a sheath made from PUR material. It supports a maximum bending cycle of 10,000,000 and a maximum operating voltage of 1000 V.
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Product Description:
The ZK4000-2711-2250 cable is produced by Beckhoff within the ZK Motor Cables series and is intended to connect a synchronous motor to its drive in automated machinery and coordinated axis systems. By combining power conductors and twisted signal pairs in one jacket, the cable delivers energy and encoder information between motion axes and the control cabinet, supporting deterministic positioning tasks on production lines and other synchronized equipment. Its PUR outer sheath allows routing through cable chains and machine interiors without additional conduit, and it remains suitable for repeated motion in compact installations.
The conductor grouping of 4 x 1.0 mm² + 2 x 1.0 mm² allocates four cores to phase power and two cores to feedback signals, giving a balanced layout for servo control loops. For use in drive cabinets, the insulation is rated for operating voltages up to 1000 V, while the power pair exhibits capacitive coupling no greater than 120 pF per meter; the corresponding signal pair remains below 150 pF per meter to help maintain clean encoder pulses. Under dynamic routing, the cable tolerates accelerations of up to 4 m/s² and sustained carrier speeds of 120 m/min without impairing dielectric strength. Installation inside energy chains is simplified by a minimum bend radius of 115 mm, and the polyurethane sheath resists coolants and oil mist.
The cable is suitable for the AX2500 servo drive environment. The copper assembly tolerates a dynamic tensile stress of 20 N/mm² and static pulls up to 50 N/mm², preserving conductor geometry during rapid start-stop sequences and repeated travel in moving cable carriers. Across 10,000,000 flex cycles, the braided screen provides at least 85% coverage to restrict radiated EMI and stabilize protective earth continuity, while the signal cores present 20.5 Ω per kilometer to keep voltage drop predictable over longer runs.
