SC402-012-T4 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 SC402-012-T4 is a servo drive from the SC400 Servo Drives series with a continuous output current of 3.50 Amps and a peak output current of 7.0 Amps. It operates at bus voltages of 160 VDC with 115 Vac input or 320 VDC with 230 Vac input. The drive delivers continuous power of 1000 Watts at 230 Vac and can reach peak power levels of 2000 Watts at 230 Vac.
Internal Product Review
The SC402-012-T4 is a Pacific Scientific SC400 servo drive with 3.50 A continuous output current and 7.0 A peak output current. A 3 kHz current loop bandwidth and 20 kHz output ripple frequency support crisp response and smooth motor control. Excellent choice for motion systems needing stable, efficient servo performance.
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Product Description:
The SC402-012-T4 servo drive is produced by Pacific Scientific as part of the SC400 Servo Drives series. Designed to regulate brushless motors in industrial automation cells, it converts rectified bus power into controlled three-phase outputs so motion controllers can command speed and torque precisely. The unit fits in control cabinets where closed-loop velocity and current regulation are required for indexing tables, conveyors, or packaging axes, acting as the interface between the higher-level controller and the motor windings.
The drive forms its DC link directly from the mains; with 115 V AC input the link is 160 VDC, while 230 V AC raises it to 320 VDC. It supplies 3.50 A continuously and can reach 7.0 A for short moves. A bandwidth of 3 kHz lets the current loop follow high-frequency torque commands. The monitor jack outputs 0.63 V per ampere up to the 4.4 V ceiling, so a technician can view phase current with an oscilloscope. An auxiliary 10 mA source powers small logic loads, and the open-collector fault line sinks 25 mA at 30 V DC to flag overload or drive shutdown.
For energy delivery, the inverter sustains 1000 W of continuous mechanical power on a three-phase 230 V supply and can reach 2000 W in peak events such as rapid indexing or emergency deceleration. The pulse-width-modulated bridge switches at 20 kHz, keeping acoustic noise above the audible range and reducing torque ripple in low-inductance windings. Command interface is differential, accepting a velocity reference of ±10 V, so integration with analog motion cards is straightforward. The tachsyn feedback gradient of 4.0 V per krpm supports stable speed estimation across the intended range, while the 0.63 V/A current-sense gain aligns the electrical loop with the velocity regulator. Together these attributes let the SC402-012-T4 maintain predictable performance over varied duty cycles.
