SC902-028-01 Pacific Scientific
Wake Industrial LLC is not an authorized distributor of this product.
The Pacific Scientific SC902-028-01 is part of the SC900 Servo Drives series and features an analog or incremental digital command interface. It delivers a continuous output current of 3.75 Amps at 25°C convection and offers a peak output current of 7.5 Amps. The drive achieves a peak output power of 2.2 kW at 240 VAC with a power stage efficiency of 95%.
Internal Product Review
The SC902-028-01 is a Pacific Scientific SC900 servo drive with an analog or incremental digital command interface and 95% power stage efficiency. Continuous output power of 1.1 kW and peak output power of 2.2 kW support precise, dependable motion control in demanding servo applications.
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Product Description:
The SC902-028-01 is a servo drive manufactured by Pacific Scientific for the SC900 Servo Drives series. It converts a fixed 240 V three-phase supply into regulated current for brushless servomotors, allowing closed-loop torque or velocity control in pick-and-place arms, packaging stations, and material-handling axes. The drive combines the power stage, signal conditioning, and protective logic in one chassis, reducing the space and wiring required in densely populated control panels. Its integrated design also keeps the primary control and protection functions within a single enclosure.
The drive delivers a continuous phase current of 3.75 A at 25 °C when cooled by natural convection. This capacity supports steady operation without thermal derating when the installation provides sufficient clearance for airflow around the heat sink. For rapid acceleration, the unit supplies a zero-to-peak current of 7.5 A, providing additional current to overcome motor inertia during short motion cycles. With a 240 V three-phase input, the drive provides 1.1 kW of continuous output power for sustained mechanical work. Transient loads can use up to 2.2 kW before the foldback circuitry limits the output. Power-stage efficiency is rated at 95%, so only a small portion of the incoming energy is converted into heat. The low thermal loss reduces cabinet cooling demand and permits closer spacing between drives in multi-axis installations.
The current loop accommodates motors with line-to-line inductance from 4.0 mH to 40 mH. Operation within this range allows the internal pulse-width modulation frequency to control current ripple without exceeding the drive’s control bandwidth. Command signals enter through a selectable analog or incremental digital interface, allowing the system to use either ±10 V speed references or quadrature step-and-direction signals without separate converters. The drive does not include a fieldbus port, so commands and adjustments are handled locally through the available control channels. Its mounting dimensions and connector pinouts align with companion models in the same product line. The shared physical layout supports consistent panel placement across systems that use different drive power levels.
