Product Description:

Pacific Scientific manufactures the SC403-001-T4 as part of the SC400 Servo Drives series. It regulates torque, velocity, and position in industrial automation systems that use servo motors. The drive acts as the power conversion and control stage between the AC supply and the connected motor. It converts single-phase or three-phase line power into a controlled DC bus and pulse-width-modulated output. In automated equipment, that supports closed-loop motion on packaging, material handling, and assembly axes. It is suited for machines that require coordinated starts, stops, and speed changes across repeated duty cycles.

The internal bus reaches 160 VDC when fed from 115 VAC and rises to 320 VDC on a 230 VAC line. At rated load, the amplifier delivers 7.5 A continuously, and its current loop tracks reference signals with bandwidth up to 3 kHz. During acceleration or disturbance rejection, it can provide a peak current of 15 A. Continuous power is 800 W from the lower single-phase line, 1575 W from the higher single-phase line, and 2250 W from the higher three-phase source. The input range accepts either nominal supply level with a tolerance of +10% to -15%, line frequency may range from 47 to 63 Hz, and an open-collector fault output rated 30 VDC at 25 mA can send alarms to a PLC without extra relays.

The output stage switches at 15 kHz, which helps reduce motor acoustic noise and smooth torque delivery. The higher switching rate also helps limit ripple in the motor current. A tachsyn feedback channel with a gradient of 4.0 V/Krpm supports speed verification, and the velocity command input accepts a differential signal of ±10 V. These control interfaces allow the drive to work with external motion commands and matching feedback hardware in analog servo systems. Peak mechanical output reaches 2250 W on the lower line and 4500 W on the higher line, giving additional capacity during rapid indexing or short acceleration events.