Sc903an-044-01 Pacific Scientific
Wake Industrial LLC is not an authorized distributor of this product.
The Pacific Scientific Sc903an-044-01 is part of the SC900 Servo Drives series and delivers a continuous output current of 7.5 Amps with a continuous output power of 2.2 kW at 240V, 3-phase. It supports both analog and incremental digital command interfaces with a peak output current of 15.0 Amps and a power stage efficiency of 96%.
Internal Product Review
The Sc903an-044-01 is a Pacific Scientific SC900 servo drive with an analog or incremental digital command interface and 96% power stage efficiency. Continuous output reaches 7.5 A, while 15.0 A peak output current supports responsive performance under changing servo loads. A strong option for motion applications requiring 4.5 kW peak output power at 240 VAC.
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Product Description:
The Sc903an-044-01 servo drive is manufactured by Pacific Scientific and belongs to the SC900 Servo Drives series. Designed to power and control brushless servo motors in automated machinery, the unit converts three-phase mains power into regulated motor current while receiving motion commands from upstream controllers. It provides the interface between motion control software and the motor, allowing position, velocity, or torque loops to be closed precisely in industrial automation systems.
Drive setup and runtime commands are accepted through an analog or incremental digital interface, allowing the device to work with either voltage command loops or quadrature step-and-direction sources. During convection-cooled operation at 25 °C, the power stage can deliver a continuous output current of 7.5 A. From a 240 V three-phase supply, this current corresponds to a sustained mechanical output of 2.2 kW. For rapid acceleration, the current capability rises to a peak of 15.0 A, allowing short bursts of torque without thermal derating. The drive operates with an efficiency of 96%, reducing electrical losses and the resulting heat inside the control cabinet. Communication hardware is not embedded, so adjustments and commands are handled locally through the available control interface.
The drive accepts line-to-line motor inductance from 2.0 mH to 2 H, allowing stable operation with a range of motor winding designs without additional series reactors. When connected to a 240 VAC supply, the inverter can provide a peak mechanical output of 4.5 kW for high-inertia axes that require more power than the continuous rating during indexing cycles. Control functions operate through the factory-installed Base Servo Software, which includes current-loop regulation, velocity feed-forward, and basic fault handling. These functions allow an external PLC to manage machine sequencing while the drive regulates motor current and motion response.
