Product Description:

The KA511JXX is a brushless rotary actuator manufactured by Sanyo Denki for the K SANMOTION Servo Motors series. It converts DC bus energy into precise shaft rotation, allowing indexing tables, lightweight gantries, or feeder rolls to move in synchronization with controller commands. In industrial automation, it supplies finely regulated torque and speed while keeping the overall package and wiring footprint small. Its compact design is suitable for motion axes where installation space is limited.

This model delivers a continuous mechanical output of 110 W at a rated speed of 3000 rpm, producing a nominal torque of 0.35 N·m. These values are achieved when the drive supplies 75 V and a phase current of 2.0 A. A torque constant of 0.20 N·m/A relates commanded current to developed torque, while an armature resistance of 4.8 Ω affects copper loss under steady load. The 3.0 mH armature inductance limits current ripple during PWM drive switching. A 54 mm square flange simplifies mounting to compact gearheads, while the 1.47 kg mass limits the weight added to the machine assembly. During deceleration, the drive can route regenerative energy through a 1600 Ω brake resistor that is suitable for the motor’s operating characteristics.

For transient demands, the motor can generate a peak stall torque of 3.4 N·m, while its continuous stall torque is 0.42 N·m when forced convection is unavailable. The holding brake provides 0.29 N·m of holding torque without motor power, helping prevent unintended shaft movement while the axis is stopped. Speed commands may extend up to 5000 rpm, accommodating rapid positioning cycles when the connected mechanical load permits. Dynamic response is supported by a rotor inertia of 0.37 × 10⁻⁴ kg·m², balancing responsive acceleration with stable motion. The available peak torque supports short acceleration and deceleration periods without increasing the continuous operating load.