R511-012E
by Sanyo Denki
The Sanyo Denki R511-012E is a high-performance DC servo motor from the renowned Super DC Servo Motors series by Sanyo Denki. This compact unit delivers a rated output of 60 W driven by a rated armature voltage of 75 V, providing precise motion control for industrial automation. With a rated rotating speed of 3000 rpm and a maximum rotating speed of 5000 rpm, the R511-012E offers both steady-state efficiency and rapid response to dynamic load changes. The motor’s rated torque of 0.19 Nm and continuous stall torque of 0.24 Nm establish a reliable baseline for continuous operation under moderate loads. Weighing in with a torque constant of 0.183 Nm/A, the design balances power density with controllability.
The R511-012E excels in demanding performance scenarios through carefully engineered electrical and mechanical characteristics. The armature inductance of 5 mH and armature winding resistance of 11.7 Ω deliver stable current regulation, while the stall armature current of 1.3 A and rated armature current of 1.2 A define safe operating thresholds. For transient conditions, the motor can sustain an instantaneous maximum armature current of 10 A, unlocking an instantaneous maximum torque of 1.8 Nm for rapid acceleration bursts. The rotor’s low rotor inertia of 0.000013 kg·m² and an instantaneous max angular accel of 80,000 rad/s² enable swift changes in velocity, making the R511-012E ideal for high-speed indexing and precision positioning tasks. This synergy of electrical time constants and mechanical responsiveness ensures consistent, repeatable performance in duty cycles with frequent starts and stops.
Reliability and seamless integration define the third cornerstone of the R511-012E’s design. Its robust armature winding and predictable electromechanical behavior simplify tuning and control algorithm development within industrial drive systems. The compact form factor and standardized mounting dimensions permit direct interchange with other units in the Super DC Servo Motors family, facilitating rapid system upgrades or replacements. Built to operate continuously at 0 to 40°C ambient temperatures, this motor withstands typical shop-floor environments with minimal maintenance. Applications span from pick-and-place robots and CNC automation to conveyor indexing and inspection systems, where precision, repeatability, and uptime are paramount.
