Product Description:

The RKL4609 is a flexible motor power cable produced by Bosch Rexroth Indramat for the RKL Motor Power Cables series. It connects an IndraDrive or comparable drive controller to a servomotor used in automated machinery. The cable delivers three-phase power through its main conductors and carries auxiliary signals while tolerating continuous movement inside cable carriers on automated gantries, pick-and-place axes, and tooling centers.

This assembly is built from bulk cable type INK0605, whose copper cores have a conductor resistance of 1.91 Ω/km at 20 °C to limit voltage drop over long machine runs. The controller end terminates in a compact bayonet connector coded RLS0723/K10, allowing quick installation while maintaining shield continuity to the drive cabinet. The three main power conductors have a cross-sectional area of 10.0 mm², which supports the RMS current drawn by mid-frame synchronous motors without excessive heating. The cable has a capacitance of 1.0 nF/m, helping the drive output remain within applicable dV/dt limits. Auxiliary conductors are included for temperature sensors, holding brakes, or encoder power; wires 5 and 6 have a cross-sectional area of 1.0 mm², while wires 7 and 8 have a cross-sectional area of 1.5 mm². The motor-side interface uses WEF coding for keyed mating with compatible Rexroth servo connectors.

The cable withstands up to 5,000,000 flex cycles, supporting extended service in dynamic drag-chain installations. During movement, it requires a minimum bending radius of 7.5 × D, while fixed sections permit a minimum radius of 5 × D; observing these limits helps prevent conductor fatigue and shield damage. The motor end has factory-crimped ferrules that simplify insertion into the WEF plug and help maintain strand integrity under terminal clamp pressure.