PY0A050A0R31S01 Sanyo Denki
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The Sanyo Denki PY0A050A0R31S01 servo amplifier is part of the PY Super BL Servo Amplifiers series and has an amplifier capacity of 50 Amps with a 200 VAC power unit and built-in dynamic brake. It supports a main power capacity of 3.1 kVA, a control power capacity of 40 VA, and features a velocity control range of 1 to 5000. The unit has a sensor resolution of 2000 pulses per revolution and weighs 4.4 kilograms.
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Product Description:
The PY0A050A0R31S01 is a servo amplifier produced by Sanyo Denki within the PY Super BL Servo Amplifiers series. This unit is intended to drive brushless servomotors in motion systems that require precise velocity regulation. By converting three-phase 200 VAC input power into controlled output current, it provides the interface between a machine controller and the motor. This conversion enables closed-loop positioning, indexing, and other automated motion tasks.
The amplifier has a continuous output capacity of 50 A, which is the maximum line current it can deliver to the motor windings during steady operation. A main circuit rating of 3.1 kVA indicates the apparent power drawn from the supply and helps with the selection of upstream breakers and wiring. Speed regulation is supported across a 1:5000 velocity control range, allowing fine adjustments from creep speed to full rated speed through the built-in speed-control interface. The control loop tracks command changes up to 400 Hz, allowing it to follow high-frequency reference updates without excessive phase lag. For rapid stops, the internal dynamic brake can absorb 1800 J of kinetic energy, while excess energy is dissipated through a 20 Ω regeneration resistor. The power unit accepts a three-phase 200 VAC supply. Main-side inrush current is limited to 18 A, and power loss remains at 120 W during rated operation.
Regenerative performance is supported by 60 W of built-in resistor capacity, allowing routine deceleration cycles to operate without an external brake pack. The control electronics draw 40 VA from the auxiliary supply, and transient current demand reaches 40 A when the amplifier is first powered. The enclosure weighs 4.4 kg, which keeps cabinet mounting loads moderate. Encoder feedback is accepted at 2000 P/R, matching common servo motor resolutions and providing accurate velocity sampling. The combination of encoder input and responsive control-loop operation allows the amplifier to correct speed deviations as motor load changes.
