Product Description:

The ZK1090-3191-3020 is a preassembled motor cable produced by Beckhoff within the ZK Motor Cables series. This assembly provides the physical layer for power and signal exchange between a servo motor and a control cabinet interface in distributed automation equipment. By integrating field-mountable industrial and network-style connectors on a preassembled length, the cable simplifies installation of EtherCAT or feedback connections and maintains consistent transmission characteristics in dynamic machine environments.

The cable is supplied in a fixed length of 2.00 m, allowing direct point-to-point routing without excess slack inside compact machines. Its core consists of a 1 x 4 x 0.14 mm² (AWG26) conductor set that suits low-power sensor and encoder circuits. The copper strands follow a 7 × 0.167 construction, producing a fine-wire profile that remains flexible while supporting the star-quad layout used for differential signaling. A wall insulation thickness of 0.25 mm separates each core, and the entire bundle has an oil-resistant jacket. At the drive end, an M8, 4-pin, A-coded plug with a 0.4 Nm tightening torque mates to servo connectors, while the controller side terminates in an RJ45, 8-pin connector for direct panel I/O entry. End-to-end propagation delay is limited to 5.3 ns/m, supporting high-speed operation. The M8 interface is rated for 50 V AC or 60 V DC, while the RJ45 side is suitable for 125 V installations.

Mechanical service life is supported by a minimum bend radius of 5 x OD, so the assembly can be routed in energy chains without overstressing the sheath. Direct-current performance is supported by a conductor loop resistance of 280 Ω/km, and crosstalk is reduced by a mutual capacitance of 52 nF/km. For brake circuits, the M8 side can deliver up to 4 A, while the RJ45 pins handle 1 A for logic feeds. The lower current rating on the RJ45 side suits signal and control functions rather than brake power.