Product Description:

The RS2A03A0KA4W00 is a servo amplifier manufactured by Sanyo Denki for the R SANMOTION Servo Drives series. Serving as the power interface between a motion controller and a three-phase servo motor, the unit modulates current and voltage so that industrial axes reach commanded speeds and torques with minimal settling time. This design allows integration into packaging, electronic assembly, or inspection systems where precise position control and rapid acceleration profiles are required.

The amplifier has a rated capacity of 30 A, which is the maximum phase current the power stage can supply without derating and is suitable for low-impedance windings used in high-torque servo motors. The main power section accepts an AC 200 V input, while the logic circuits draw DC 24 V, keeping the control electronics isolated from line disturbances. Current switching is performed by a sinusoidal IGBT PWM drive, which limits ripple and supports velocity-loop frequency characteristics up to 600 Hz. A built-in dynamic brake and an internal regeneration circuit convert excess kinetic energy to heat, eliminating the need for external resistors. Speed commands arrive as a differential DC ±2.0 V signal, and the closed-loop algorithm maintains accuracy across a 1:5000 control range. Separate 2.0 V monitor outputs provide real-time feedback for both speed and torque.

Position feedback is handled through a 4.0 Mbps half-duplex serial interface that transfers incremental and absolute data from an optical encoder. Each revolution is divided into 131,072 divisions, and an internal counter records a multi-turn span of 65,536 rotations, allowing absolute position recovery after a power loss. The encoder’s optical pickup resists magnetic interference and maintains edge clarity during high-speed moves. Cabinet integration is simplified by a mass of only 1.0 kg, so the drive can be mounted without heavy support hardware. Its compact mass also reduces the mechanical load placed on the cabinet mounting surface.