Product Description:

The SC905NN-001-01 servo drive is produced by Pacific Scientific and belongs to the SC900 Servo Drives series. It regulates brushless servo motors in automated machinery by translating control references into high-bandwidth, pulse-width-modulated power. Acting as the intermediary between a motion controller and the motor windings, the unit supports precise torque and speed control for positioning tables, pick-and-place heads, and other motion axes found in packaging, assembly, and material-handling cells.

Under forced-air conditions at 50 °C, the drive can deliver a continuous output current of 30.0 A, sustaining torque production without thermal derating. When powered from a 240 V three-phase source, it supplies up to 9.0 kW of continuous mechanical power to the connected motor, which is suitable for medium-frame servo applications. For acceleration events, the current reserve rises to 60.0 A peak, with a corresponding peak output power of 18.0 kW. Conversion losses are minimized by a power-stage efficiency of 97%, which helps maintain lower enclosure temperatures and reduces overall energy consumption.

The drive uses an analog or incremental digital command interface that accepts velocity or torque references directly from a PLC or motion card, eliminating the need for a separate fieldbus. The power stage tolerates motors whose line-to-line inductance ranges from 0.5 H down to 0.5 mH, allowing one drive to operate high-inductance torque motors or low-inductance high-response models. Thermal stability is aided by the fanless, convection-cooled design, which removes moving parts and relies on cabinet airflow to dissipate heat during continuous and peak duty points. Standard firmware and base servo software complete the configuration for this unit.