SC904-001-01 Pacific Scientific
Wake Industrial LLC is not an authorized distributor of this product.
Wake Industrial LLC is not an authorized distributor of this product.
The Pacific Scientific SC904-001-01 is a servo drive from the SC900 Servo Drives series. It features a continuous output current of 15.0 Amps and peak output current of 30.0 Amps. The drive delivers continuous output power up to 4.5 kW at 240V 3-phase with a power stage efficiency of 97%.
Internal Product Review
The SC904-001-01 is a Pacific Scientific SC900 servo drive with an analog or incremental digital command interface. Continuous output reaches 15.0 A, and peak output rises to 30.0 A for confident acceleration and steady torque delivery. Power stage efficiency of 97% and continuous output power of 4.5 kW make this drive an efficient, capable option for servo applications.
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Product Description:
The SC904-001-01 is a servo drive manufactured by Pacific Scientific and supplied within the SC900 Servo Drives series. In an automation cell, it serves as the power and control stage between a motion controller and a brushless servo motor, delivering regulated current and voltage so the motor can follow commanded torque, velocity, or position profiles. This arrangement supports precise axis control in standalone motion systems that use direct command wiring instead of a networked interface.
The drive accepts motion commands through an analog or incremental digital interface, allowing it to track ±10 V speed loops or step-and-direction pulse trains without additional protocol hardware. Under natural convection at 25 °C, the power section can supply a continuous phase current of 15.0 A; this rating sets the steady-state torque capability available to the load. At the same ambient condition and with a three-phase 240 V source, the unit produces 4.5 kW of continuous mechanical power, indicating how much work it can deliver without thermal derating. Short-duration dynamics are handled by a peak output current of 30.0 A, which permits rapid acceleration bursts or disturbance rejection. Conversion losses are limited because the power stage operates with an efficiency of 97%, reducing cabinet heat.
Additional limits frame the operating envelope. During transient events, the inverter can source up to 9.0 kW of power at a DC bus derived from 240 VAC, providing headroom for inertia-dominated moves. Motor selection must observe the maximum line-to-line inductance of 1 H so the current regulator remains stable, while the minimum inductance of 1.0 mH prevents excessive ripple that could overheat the windings. Because the drive has no onboard fieldbus, tuning and diagnostics are handled locally through the command and setup connections, keeping the installation focused on point-to-point motion tasks.
