P50B07040DCS81 Sanyo Denki
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The Sanyo Denki P50B07040DCS81 is a brushless servo motor that is part of the P5 Super BL Servo Motors series. It delivers a rated output of 400 W, a rated speed of 3000 min-1, and a rated torque of 1.274 Nm. Equipped with a wiring-saved incremental encoder and holding brake, this motor has a 76 mm flange size and a maximum speed of 4500 min-1.
Internal Product Review
The P50B07040DCS81 is a Sanyo Denki brushless servo motor with 400 W rated output and 3000 min-1 rated speed. A wiring-saved incremental encoder with 2000 P/R resolution supports clean feedback and dependable tuning. Holding-brake integration is a valuable feature, and 3.92 N·m max stall torque gives the motor confident overload performance.
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Product Description:
The P50B07040DCS81 is a brushless AC servo motor developed by Sanyo Denki within the P5 Super BL Servo Motors series. As a compact 400 W class drive element, it supplies closed-loop rotary motion for positioning tables, pick-and-place heads, and other precision axes in industrial automation. The motor integrates a wire-saving incremental encoder, allowing the controller to receive position feedback with fewer connections between the motor and drive.
Its continuous operating point includes a rated output of 400 W, a shaft speed of 3000 rpm, and a steady torque of 1.274 N·m. These values indicate the power, rotational velocity, and torque that the motor can deliver continuously without overheating. The torque constant of 0.481 N·m/A RMS indicates how much torque is produced for each ampere of current. The phase winding resistance is 1.65 Ω, which affects copper losses and the voltage required during regulation. An electrical time constant of 4.0 ms indicates how quickly current rises in the windings, while the rotor inertia of 0.74 × 10⁻⁴ kg·m² balances responsiveness with load matching. The 76 mm square mounting flange allows direct attachment to compatible medium-frame gearheads.
The motor can accelerate beyond its rated region to a maximum speed of 4500 rpm when brief, high-throughput cycles are required. During these operating peaks, the drive can supply a stall torque of 3.92 N·m and draw up to 10.0 A RMS; the amplifier must be configured to remain within these limits. Position feedback has a resolution of 2000 pulses per revolution, providing sufficient granularity for precise motion control without additional feedback cabling. A 24 V electromagnetic brake provides 0.98 N·m of holding torque while consuming 0.3 A, allowing it to keep vertical loads stationary when motor power is removed.
