PY9A050U0XXXC02 Sanyo Denki
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The Sanyo Denki PY9A050U0XXXC02 is part of the PY Super BL Servo Amplifiers series and has a mass of 4.4 kg. It features built-in dynamic brake and regen processing, and supports a velocity control range of 1:5000. This amplifier has a maximum humidity rating of 90 percent RH and can operate up to 1000 meters altitude.
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Product Description:
The PY9A050U0XXXC02 is a servo amplifier produced by Sanyo Denki for the PY Super BL Servo Amplifiers series. In automation cells, it interfaces between a motion controller and a brushless servo motor, converting low-level analog commands into regulated three-phase power while supervising current, velocity, and regenerative energy. The module occupies a single panel location and supports fast position loops in pick-and-place gantries, indexing tables, and machine-tool axes.
Command processing begins with a ±2.0 VDC torque reference that sets the full motor load, while a velocity command of ±2.0 VDC selects speed within the wide 1:5000 velocity control range. Closed-loop response remains linear up to 400 Hz, so the amplifier can follow rapid trajectory corrections without excessive phase lag. Under step disturbances, the maximum speed drift is limited to ±0.1%, preserving contour accuracy on high-precision machinery. A feedback terminal provides an output of 2.0 V ±20% in proportion to motor phase current, and a separate current-limit input of ±2.0 VDC ±10% allows the host PLC to impose soft torque limits. Built-in dynamic braking absorbs residual energy during emergency stops, while built-in regenerative processing channels excess DC energy back to the supply to reduce cabinet heat. A velocity monitor signal of 2.0 V ±10% is available for oscilloscope measurements and system diagnostics.
Internal gain drift remains within a maximum of ±0.5%, so commanded torque accuracy remains stable as the heat sink warms during extended duty cycles. The cast-aluminum enclosure weighs 4.4 kg, allowing manageable panel mounting while providing vibration damping and thermal mass for the brake resistor. Full performance is maintained at humidity levels up to 90% RH and at elevations up to 1000 m; operation beyond these limits requires derating. The enclosure and integrated thermal design allow the amplifier to operate without auxiliary climate-control equipment when the stated humidity and elevation limits are observed.
