SC402-001-T1 Pacific Scientific
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The Pacific Scientific SC402-001-T1 is a servo drive from the SC400 Servo Drives series that operates with a bus voltage of 160 VDC at 115 Vac and 320 VDC at 230 Vac. It offers a peak output current of 7.0 Amps, a current loop bandwidth up to 3 kHz, and provides peak power of 1000 W at 115 Vac and 2000 W at 230 Vac. Continuous power output reaches 700 W at 230 Vac single phase and 1000 W at 230 Vac three phase.
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Product Description:
The SC402-001-T1 is a servo drive manufactured by Pacific Scientific as part of the SC400 Servo Drives series. It provides closed-loop current and velocity control for industrial servomotors, ensuring precise motion in packaging lines, pick-and-place axes, and similar automation cells. By rectifying the incoming single-phase or three-phase AC supply and modulating the output with high-frequency switching, the unit supplies the regulated energy required for dynamic acceleration, deceleration, and holding torque in coordinated machine movements. Its control architecture allows motor current to follow command changes closely during repeated starts, stops, and direction changes.
When powered from a 115 VAC source, the internal DC bus rises to 160 VDC, while operation from 230 VAC establishes a bus of 320 VDC. Continuous output capability is application-selectable: the 115 VAC path delivers 4.2 A of armature current, whereas the 230 VAC path supports 3.5 A. Under single-phase 230 VAC supply, the drive can source a sustained mechanical load of 700 W. Current loop bandwidth reaches 3 kHz, allowing the controller to react quickly to command changes and reject load disturbances. A tachometer input with a gradient of 0.5 V/kRPM is accepted for velocity feedback, and the control electronics switch the output devices at a carrier frequency that minimizes audible noise and torque ripple. This arrangement provides a consistent feedback path for closed-loop speed regulation.
Three-phase 230 VAC wiring raises continuous mechanical output to 1000 W without altering the package size, supporting higher-inertia axes that run for extended periods. For rapid indexing or shock loads, peak electrical delivery climbs to 2000 W and the current channel can momentarily reach 7.0 A. The power devices switch in a trapezoidal pattern at an output ripple frequency of 20 kHz. This keeps motor-borne electromagnetic emissions above the acoustic range and reduces filter size, while also supporting smoother current delivery during rapid motion changes.
