KA850TS0 Sanyo Denki
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The Sanyo Denki KA850TS0 servo motor is part of the K SANMOTION Servo Motors series and has a rated output of 500 W with a rated speed of 2500 min-1. It features a rated armature voltage of 80 V, a rated armature current of 7.4 A, and a continuous stall torque of 2.16 N·m. The motor weighs 4.7 kg and comes with a line driver encoder capable of 2000 pulses per revolution.
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Product Description:
The KA850TS0 is a brushless AC servo motor manufactured by Sanyo Denki for the K SANMOTION Servo Motors series. It converts drive commands into precise shaft rotation for positioning, velocity, and torque control in pick-and-place stages, packaging conveyors, and general motion axes. Closed-loop feedback from its integrated incremental encoder helps the motor remain synchronized with the servo amplifier while responding quickly to dynamic load changes. This arrangement allows the amplifier to correct changes in shaft position and speed as operating loads vary.
Under rated conditions, the motor delivers 500 W of mechanical power at a shaft speed of 2500 rpm. At this operating point, it produces a continuous torque of 1.91 N·m while drawing a phase current of 7.4 A from an 80 V DC bus. The matching SANMOTION drive must provide the required current and voltage throughout continuous operation. The armature resistance is 0.53 Ω, which affects copper loss and winding temperature under load. A torque constant of 0.286 N·m/A relates commanded current to developed torque for precise current-mode control. The voltage constant is 30 × 10⁻³ V per rpm and indicates the back electromotive force that the inverter must overcome. Rotor inertia is 6.0 × 10⁻⁴ kg·m², supporting rapid acceleration without excessive overshoot.
During transient operation, the motor can reach a peak torque of 16.7 N·m and can maintain 2.16 N·m at stall when adequate cooling is available. An armature inductance of 0.86 mH limits the rate of current change and influences the drive’s control bandwidth. Position feedback comes from a line-driver encoder that produces 2000 P/R. Its differential output provides strong noise immunity when signals travel through long, shielded cables. The motor has a mass of 4.70 kg, which should be considered when calculating support loads and axis dynamics. Inductance, rotor inertia, and encoder resolution affect proportional and integral gain settings used to maintain stable motion throughout the intended load range.
