Product Description:

The PY9A300U0XXXC05 is a servo amplifier built by Sanyo Denki as part of the PY Super BL Servo Amplifiers series. Designed for use with brushless servo motors, the module supplies phase-controlled current and monitors feedback to regulate torque and speed in automated production equipment. When integrated into a motion axis, it provides the power stage that links a high-level controller to the motor windings, enabling rapid positioning, contouring, and speed-holding tasks common to pick-and-place, packaging, or assembly lines.

At the command interface, drive current is limited by a differential input of ±2.0 VDC ±10%, allowing a motion controller to set peak torque through a small-signal analog voltage. Real-time load information is returned on the current monitor pin at 2.0 V ±20%, so the supervisor can detect overloads without extra sensors. Internally, the control loop operates with frequency characteristics up to 400 Hz, giving enough bandwidth for fine position corrections. The amplifier maintains velocity regulation across a span of 1:5000, and the output shaft speed can be observed on the velocity monitor line at 2.0 V ±10%. A built-in dynamic brake engages automatically to absorb kinetic energy during sudden stops, shortening deceleration time and protecting the mechanical drivetrain.

Speed stability is affected by several operating conditions. Under a changing load, the setpoint deviates by only ±0.1% of maximum speed, while ambient temperature shifts produce a maximum drift of ±0.5% of maximum speed. Voltage fluctuations on the DC bus introduce a separate ±0.1% speed change, keeping the total error within tight motion tolerances. Energy returning from decelerating masses is processed by the built-in regeneration circuit, so external resistors are unnecessary for moderate duty cycles. The housing weighs 16 kg, which should be considered when arranging multiple axes within a control cabinet.