Product Description:

The SC403-013 servo drive is produced by Pacific Scientific and belongs to the SC400 Servo Drives series. It functions as a power stage and control interface between an AC mains supply and a brushless servo motor, converting line voltage to a regulated DC bus and closing the velocity loop in industrial automation cells. By combining power conversion, current regulation, and motion command scaling in one module, it reduces panel wiring and simplifies integration with indexers, PLC motion cards, and distributed I/O.

At a 115 VAC input, the drive establishes a bus potential of 160 VDC; when the supply is raised to 230 VAC, the bus reaches 320 VDC. This dual-range capability allows a single model to serve machinery built for North American or international mains. During steady operation, the current regulator can source 7.5 A to the motor windings, and it tolerates bursts up to 15 A for acceleration or shock loads. A high-gain current loop, selectable up to 3 kHz, keeps torque ripple low and helps maintain tracking accuracy during rapid load changes. The velocity input accepts ±10 V from analog motion controllers, and an overall form factor below 1.01 indicates low waveform distortion on the supply. Line terminals accommodate either 115 VAC or 230 VAC without jumper relocation.

On the mains side, the drive tolerates input frequencies from 47-63 Hz, letting it follow utility variations without tripping protective logic. It can be wired for single-phase or three-phase input, which eases retrofits where only limited panel power is available. Short-duration moves are backed by peak mechanical power ratings of 2250 W at 115 VAC and 4500 W at 230 VAC, giving the machine a predictable power reserve for indexing, tensioning, or extruder feed applications without requiring a larger frame size.