DSD40-2A-001 Pacific Scientific
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The Pacific Scientific DSD40-2A-001 is part of the PC800 - PCE800 Brushless Servo Drives series and operates on 230 VAC single-phase input. It supports analog command input of ±10 V with 12-bit resolution, features RS-232C communication, and can trace up to 8 alarms. The drive includes a 2500 pulse per revolution incremental encoder and offers digital command modes such as Step/Dir, Up/Down, and Quadrature.
Internal Product Review
The DSD40-2A-001 is a Pacific Scientific brushless servo drive built for single-phase 230 VAC input and dependable 400 W continuous shaft power. Control integration is especially appealing, with RS-232C communication and flexible digital command modes including Step/Dir, Up/Down, and Quadrature. Integrated resistance regeneration makes the DSD40-2A-001 a very capable choice for efficient servo system performance.
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Product Description:
Pacific Scientific manufactures the DSD40-2A-001 as part of the PC800–PCE800 Brushless Servo Drives series. This servo drive regulates brushless motors in positioning, packaging, and material-handling lines. Acting as the power interface between a motion controller and the motor, it modulates phase current, captures feedback, and logs diagnostic information. These functions help automation cells maintain consistent speed, torque, and positioning accuracy during repetitive operating cycles.
The drive accepts a single-phase input of 230 VAC, allowing it to receive power from standard factory panels. Motion commands use an analog channel that accepts ±10 V. The signal is digitized with a 12-bit resolution, providing 4,096 discrete levels for speed or torque references. For pulse-train control, the unit recognizes Step/Direction, Up/Down, and quadrature formats and counts edges at up to 500 kHz, allowing high-speed indexers to operate without missed steps. Continuous mechanical output reaches 400 W, while an eight-alarm history provides a record of recent faults for diagnostic review. Serial configuration is available through an RS-232C connection, and a seven-segment display presents operating and fault codes.
Feedback handling centers on the drive’s incremental encoder interface. It supplies encoder excitation and retransmits position data at a resolution of 2500 P/r, matching the supported incremental encoders used with PC800 servomotors. The differential lines use differential TTL quadrature signaling for reliable transmission in electrically noisy industrial equipment. A dedicated marker channel provides a once-per-revolution reference with a width of one quadrature pulse. Captured counts enter the internal velocity loop, allowing the drive to support position control when operating with pulse or analog commands. During rapid deceleration, excess kinetic energy is dissipated through the onboard regeneration network with integrated braking resistance. This arrangement eliminates the need for an external dump resistor and reduces the amount of cabinet wiring required for the braking circuit.
