SC403-002-T3 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 SC403-002-T3 is a servo drive from the SC400 Servo Drives series. It offers a continuous current of 7.5 A and a peak output current of 15 A, with a maximum current loop bandwidth of 3 kHz. The drive provides bus voltages of 160 VDC at 115 Vac and 320 VDC at 230 Vac, and can deliver peak power up to 4500 W at 230 Vac.
Internal Product Review
The SC403-002-T3 is a Pacific Scientific SC400 servo drive with 7.5 A continuous current and 15 A peak output current. A 3 kHz max current loop bandwidth supports crisp servo response, and 15 kHz ripple frequency contributes to smooth drive performance.
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Product Description:
The SC403-002-T3 servo drive is manufactured by Pacific Scientific and belongs to the SC400 Servo Drives series. Designed for closed-loop velocity and torque control, it conditions incoming single-phase or three-phase mains into the regulated DC link and three-phase output required by permanent-magnet servo motors. The drive integrates signal processing, power conversion, and protective functions in a compact module for indexing tables, pick-and-place heads, and light conveying systems. It is suited to compact motion systems where stable motor control and integrated protection are needed in one enclosure.
With a 115 VAC supply, the internal rectifier sets the bus to 160 VDC, while the same topology reaches 320 VDC with 230 VAC mains; this dual rating lets one hardware platform fit low-voltage or high-voltage panels. The continuous phase output is 7.5 A, enabling steady operation without additional heat sinking. A digitally tuned current regulator achieves a 3 kHz bandwidth, so the commanded torque follows feedback with minimal lag. For short acceleration bursts, the power stage delivers 15 A peak while remaining inside thermal limits. A resolver interface supplies a tachsyn gradient of 2.0 V per krpm to provide proportional velocity feedback to the control loop.
During high-speed moves, the inverter can supply 2250 W from a 115 V line and up to 4500 W from a 230 V line, matching the peak kilowatt demand of mid-frame servo motors. Switching devices operate at a carrier that imposes a 15 kHz ripple frequency on the motor leads, balancing acoustic noise and switching loss. The analog interface accepts a ±10 V velocity command, allowing direct connection to PLC or motion card outputs without signal scaling. A 30 VDC fault transistor capable of sinking 25 mA reports overcurrent, overtemperature, or bus undervoltage to the controller, and the 4.5-inch width helps conserve panel space beside contactors and breakers. The fault output also gives the host control a simple way to monitor drive status during operation.
