PY0A050A1G31P01 Sanyo Denki
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The Sanyo Denki PY0A050A1G31P01 servo amplifier is part of the PY Super BL Servo Amplifiers series and has an amplifier capacity of 50 Amps. It supports position control interface and runs on a 200 VAC single-phase power supply. The unit has a frequency response of 400 Hz and weighs 4.4 kilograms.
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Product Description:
The PY0A050A1G31P01 is a servo amplifier produced by Sanyo Denki within the PY Super BL Servo Amplifiers series. It provides regulated current and velocity drive signals for Super BL servo motors, allowing closed-loop positioning in assembly robots, semiconductor handlers, and precision tooling equipment. By translating analog command voltages into controlled motor phase currents, the unit forms the interface between a motion controller and the electromechanical axis it powers. This arrangement helps maintain consistent speed and torque under rapidly changing loads.
The power stage can deliver up to 50 A of continuous phase current from a 200 VAC supply and accepts power through a single-phase line, simplifying cabinet wiring where three-phase service is limited. A frequency response of 400 Hz lets the internal loops track fast command changes, while a velocity control range of 1:5000 supports slow creep moves and high-speed indexing with the same controller gain setting. Positioning is handled through the position-control interface. Velocity commands of ±2.0 VDC are buffered by an input with 10 kΩ impedance, and the resulting motor speed is represented by a 2.0 V signal at the velocity monitor pin for oscilloscope observation. Current loops are bounded by a ±2.0 VDC limit input, and the actual motor current is available through a 2.0 V monitor output. This output allows the host controller to verify torque production without an external shunt.
A control-circuit inrush current of 40 A applies when the logic section is energized, while the main-circuit inrush current is limited to 18 A during the initial charging of the capacitors. The dynamic brake engages after 24.0 ms to dissipate regenerated energy whenever the enable signal drops. An incremental encoder with a resolution of 2000 P/R provides phase-aligned feedback to the amplifier’s estimator, helping reduce dither even at standstill. With a mass of 4.4 kg, the unit can be mounted on a suitable chassis plate without requiring substantial structural support. Appropriate mounting clearance should be maintained to provide access to the power, control, and feedback connections.
