Product Description:

The SC903AN-001-01 is a drive unit produced by Pacific Scientific within the SC900 Servo Drives series. Mounted in control cabinets alongside motion controllers, it modulates three-phase power to regulate brushless servomotors used on pick-and-place modules, packaging axes, and other automated machinery. By converting incoming plant voltage to controlled current, the unit provides the torque, speed, and positioning precision demanded by modern industrial automation. Its cabinet-mounted format also helps keep power conversion close to the control hardware that supervises the axis.

At a 25 °C ambient with natural convection, the drive can deliver a continuous phase current of 7.5 A, enabling sustained motion without thermal derating. Under the same conditions and a 240 V, three-phase supply, it supports a continuous mechanical output of 2.2 kW. For rapid acceleration or short overloads, the current ceiling rises to 15.0 A, and the matched peak output power reaches 4.5 kW. Energy passed through the insulated-gate power stage is converted to shaft work with a measured efficiency of 96%, which helps reduce heat inside the enclosure during steady operation.

The control layer accepts an analog or incremental digital command interface, and no fieldbus is embedded, so control signals are supplied through these reference lines. Thermal management relies on a fanless, convection-cooled enclosure, which removes moving parts from the cooling system. The drive’s current regulators are intended to match servomotor reactance between a maximum line-to-line inductance of 2 H and a minimum of 2.0 mH, allowing stable operation across a broad motor range. Base servo software and the standard unit configuration keep the operating format aligned with the common SC900 platform, while the lack of communications hardware helps preserve a compact footprint.