SC125-410-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 SC125-410-T4 is a brushless servo controller from the SC100 Brushless Servo Controllers series. It operates at a nominal bus voltage of 320 VDC and an input voltage of 230 VAC with a frequency range of 47 to 63 Hz. The controller features a Tachsyn Processor interface and delivers efficiency greater than 95 percent while supporting an operating temperature between 0 and 50 degrees Celsius.
Internal Product Review
The SC125-410-T4 is a Pacific Scientific brushless servo controller from the SC100 series, with a design that feels well suited to demanding motion applications. A 230 VAC input and 320 VDC nominal bus voltage make integration straightforward in common industrial power schemes. Greater than 95% efficiency and a 5 kHz switching frequency support precise, responsive performance.
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Product Description:
The SC125-410-T4 brushless servo controller is produced by Pacific Scientific as part of the SC100 Brushless Servo Controllers series. The device converts fixed-frequency utility power into precisely modulated three-phase outputs that run permanent-magnet motors, allowing automation cells to adjust speed, torque, and direction through software commands. In addition to its power functions, the controller supplies feedback excitation and signal conditioning so motion axes can close velocity and position loops with minimal latency. This combination makes the unit suitable for pick-and-place gantries, indexing tables, and other equipment requiring coordinated, repeatable motion.
At the power input, the controller accepts 230 VAC (+10%, -15%) mains power within a line frequency range of 47–63 Hz, then rectifies and stores energy on a DC link regulated at 320 VDC. Pulse-width modulation is executed at 5 kHz, a rate that limits audible noise while keeping current ripple low. Even at this switching frequency, power-stage efficiency remains > 95%, helping enclosure designs stay within thermal limits by reducing waste heat. The elevated DC-link voltage also provides headroom for motors that generate substantial back electromotive force during rapid acceleration and high-speed operation.
The drive’s feedback section is built around a Tachsyn Processor, enabling direct connection to resolver-type tachometers and scaling velocity signals to the 4.0 V/Krpm factor required by compatible Pacific Scientific servomotors. Full output ratings are available across an operating temperature range of 0 °C to 50 °C, allowing the controller to maintain its rated performance under typical industrial cabinet conditions. Components can withstand nonoperating temperatures from -55 °C to 70 °C, permitting the controller to remain stored in facilities that experience a wide range of seasonal temperatures. Its mechanical dimensions and connector arrangement support integration with compatible motors, feedback devices, and power connections used in coordinated motion systems.
