ZK7A26-3031-0017 by Beckhoff

The ZK7A26-3031-0017 is a flexible motor connection cable produced by Beckhoff within the ZK Motor Cables series. Designed for servo drive installations, the assembly transfers power and low-level feedback signals between the controller and a matched motor, allowing quick plug-and-play wiring on production machinery. The standardized cable layout simplifies routing through drag chains and fixed trays while maintaining electrical integrity in automated environments.

At a finished length of 1.7 m, the cable can reach from a cabinet-mounted drive to a servo motor in a compact machine frame without leaving excessive slack. The molded circular connector uses an industrial B23 shell, providing ample contact area for the power and signal conductors. The power-conductor insulation is rated for up to 630 V AC/850 V DC, supporting operation on compatible AC or DC motor circuits. Integrated twisted pairs carry encoder or sensor signals through conductors with a cross-sectional area of 0.34 mm² (AWG22), balancing low voltage drop with the flexibility required for repeated bending. The interface provides 4 dedicated data contacts that are separate from the power conductors, helping limit crosstalk during simultaneous power and data transmission.

The connector has an ingress protection rating of IP65/IP67, so the properly mated interface resists dust, low-pressure water jets, and temporary immersion under the rated conditions. For networked drive topologies, the internal pair supports Ethernet signaling that meets Cat.5 performance, enabling drive diagnostics or distributed synchronization over the same cable run. Mechanical coding number 3 ensures the correct connector orientation and prevents mating with differently coded interfaces when several similar connectors are installed nearby. The electrical keying uses a user-defined voltage scheme, allowing the connector assignment to match the voltage requirements of the application.