RS1A01AA Sanyo Denki
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The Sanyo Denki RS1A01AA is part of the R SANMOTION Servo Drives series and features an amplifier capacity of 15 Amps. It offers speed, torque, and position control with a 2000 pulse per revolution wire-saving incremental encoder. This drive uses an IGBT PWM sinusoidal system and has a built-in dynamic brake and regeneration process.
Internal Product Review
The RS1A01AA is a Sanyo Denki servo drive with AC200V nominal input and 15 A amplifier capacity. The IGBT PWM sinusoidal drive and 1:5000 speed control range support precise, stable motion performance across demanding axis applications. Built-in dynamic braking and built-in regeneration make this model especially efficient for responsive servo control.
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Product Description:
The RS1A01AA servo amplifier belongs to the R SANMOTION Servo Drives series produced by Sanyo Denki. It conditions command signals from motion controllers and supplies regulated current to AC servomotors, allowing precise speed, torque, and position control in assembly stations, packaging lines, and semiconductor handling equipment. By integrating power conversion, feedback processing, and braking hardware into one compact unit, the amplifier simplifies axis design while meeting the response and stability demands of automated machinery.
The power stage can deliver up to 15 A of motor current, and its switching section uses an IGBT PWM sinusoidal drive topology that minimizes current ripple and acoustic noise. Operation is based on a three-phase 200 VAC supply with an input frequency of 50/60 Hz, eliminating the need for a step-down transformer when used with a compatible power source. When configured for speed regulation, the amplifier maintains linearity across a wide 1:5000 control range, allowing the same axis to perform slow homing moves and high-velocity indexing without parameter changes. The loop bandwidth reaches 600 Hz, helping the motor follow commanded trajectories closely during load disturbances. The amplifier also accepts mode changes among speed, torque, and position without requiring external rewiring, allowing one unit to support different motion-control tasks within a machine.
Rapid deceleration energy is absorbed by a built-in dynamic brake, while excess kinetic energy is dissipated through an integrated regeneration circuit. Position feedback is handled by a wire-saving incremental encoder with a resolution of 2000 P/R, supporting fine interpolation for precise positioning. Status and alarm signals leave the drive through a general-purpose output configured as an NPN sink, matching common PLC input cards. The electronics are mounted in a built-in tray-type enclosure, and a total mass of 0.9 kg keeps the panel load low. The compact enclosure also helps conserve installation space while keeping the amplifier’s power, feedback, and braking functions together in the control panel.
