R2AA08020FXHKC Sanyo Denki
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The Sanyo Denki R2AA08020FXHKC is a middle inertia servo motor from the R SANMOTION Servo Motors series. It features a rated output of 200 W, rated torque of 0.637 N·m, and a maximum rotation speed of 6000 min-1. The motor comes with an 80mm flange size, an absolute encoder for incremental systems with 131072 divisions, and operates at 200 Volts.
Internal Product Review
The R2AA08020FXHKC is a Sanyo Denki SANMOTION R Series servo motor with 200 W rated output and 0.637 N·m rated torque. A middle-inertia design and 6000 min⁻1 maximum rotation speed support smooth, responsive axis control in demanding motion applications. An absolute encoder for incremental systems with 131072 div resolution is a standout feature for precise feedback.
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Product Description:
The R2AA08020FXHKC is an AC servo motor manufactured by Sanyo Denki within the R SANMOTION Servo Motors series. This medium-inertia unit is intended for closed-loop position and speed control in automated machinery such as pick-and-place axes, light conveyors, and indexing tables. It carries a single-turn absolute encoder that operates within an incremental feedback system, enabling the drive to report the shaft position immediately after power is restored without requiring a homing cycle.
Its continuous power rating is 200 W, generated while the shaft delivers a rated torque of 0.637 N·m at 200 V with 1.5 Arms of excitation. When demand spikes, the rotor can accelerate to a mechanical speed ceiling of 6000 rpm without exceeding its operating limits. The drive section expects a 200 V DC bus, and the phase resistance is 2.3 Ω, which affects copper losses and current-loop bandwidth. The high-resolution feedback device outputs 131,072 divisions per revolution, providing 17-bit position granularity for precise servo control. A stall torque of 0.686 N·m indicates the static load that the motor can hold while remaining within its thermal limits. The motor does not include an integral holding brake, so external clamping is required whenever power is removed.
Transient operation is supported by a peak torque capability of 2.2 N·m, allowing rapid indexing or tension corrections without exceeding the motor’s short-term thermal capacity. The motor has a torque constant of 0.516 N·m/Arms, allowing the controller to translate the requested torque into a corresponding current setpoint. Mechanical integration uses an IEC square mounting pattern with an 80 mm flange, allowing direct coupling to compatible gearheads or machine frames. The back-electromotive-force slope of 18.0 mV/rpm helps determine drive requirements for regenerative braking and overspeed monitoring. Because the encoder does not provide multi-turn tracking, the control system must track positions that extend beyond one shaft revolution. This single-turn feedback arrangement also reduces the number of signals needed for position monitoring.
