Product Description:

The RS1A03AL is a servo amplifier produced by Sanyo Denki for the SANMOTION R Servo Drives series. As a drive module, it supplies regulated three-phase power to a matched servo motor so that position, velocity, and torque can be controlled precisely in automated machinery. The unit communicates with motion controllers over a fieldbus and supports high-bandwidth current loops, making it suitable for packaging, semiconductor manufacturing, and general assembly lines that require fast, repeatable axis performance.

It can deliver a continuous output of 30 A, providing sufficient capacity for medium-frame motors that must accelerate loads quickly. Communication and parameter access use the CANopen protocol, which supports multi-axis coordination over a single network. Both the control and main power sections accept 200 VAC, allowing one compatible transformer to supply the logic and power stages. The default bus speed is 500 kbps, balancing the update rate with resistance to electromagnetic interference on industrial wiring. An IGBT-based, pulse-width-modulated sinusoidal drive processes commands with frequency characteristics up to 600 Hz. The amplifier supports a speed control range of 1:5000, enabling stable operation across a broad range of motor speeds.

The amplifier has no internal regenerative resistor, so an external braking element must be added when rapid deceleration produces more regenerative energy than the system can otherwise absorb. At the default bit rate, the CAN trunk can extend up to 25 m, and the output stage uses an NPN interface compatible with common PLC sinking inputs. The housing is 168 mm high and 60 mm wide, providing a compact profile for side-by-side installation in a shallow control cabinet. Its mass is 1.1 kg, which limits the load placed on the mounting panel. Adequate cabinet clearance should be maintained around the amplifier so air can circulate and heat from the power electronics can dissipate during continuous operation.