SC453-055-04 Pacific Scientific
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The Pacific Scientific SC453-055-04 is a servo controller from the SC450 Brushless Servo Controllers series. It is a programmable digital position controller with resolver feedback and offers a peak output power of 4500 W at 230 VAC. The controller provides a continuous current of 7.5 A and has a position control accuracy of 15 arcminutes.
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Product Description:
The SC453-055-04 is a brushless servo controller produced by Pacific Scientific and belongs to the SC450 Brushless Servo Controllers series. Acting as a programmable digital position controller, it generates precise current loops and position commands that drive resolver-equipped servo motors in automated assembly lines, packaging machines, and material-handling stations. By combining power electronics with onboard motion processing, the unit eliminates the need for external indexers, reduces panel space, and provides deterministic positioning for multi-axis systems.
During steady-state operation with either a 115 VAC or 230 VAC supply, the drive provides up to 7.5 A of continuous phase current. Short-term movements, such as acceleration or disturbance rejection, can draw up to 15.0 A. Internally, the output stage switches the DC bus at 15 kHz, which limits audible noise and supports smooth torque production. Position commands are interpolated at a resolution of 4096 steps per revolution, and closed-loop accuracy reaches 15 arcmin at the load when resolver feedback is properly aligned. When powered by a 230 VAC source, the controller can deliver up to 4500 W, supporting medium-frame motors used on conveyors, rotary actuators, and small gantries.
The position command range extends from 0 to +100,000,000 steps, providing enough numerical capacity for long-travel axes without counter rollover. Despite this large addressing capability, the housing weighs only 5.0 kg, allowing it to be secured to an appropriate DIN rail or panel plate without heavy bracing. All control and power components operate at ambient temperatures from 0 to 50 °C. Forced cooling is not required within this temperature range when the controller has adequate clearance and unobstructed airflow. Its relatively low mass also reduces the structural load placed on compact control panels, while the broad command range accommodates machinery that must track extended linear or rotary movement.