SC452-047-05 Pacific Scientific
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The Pacific Scientific SC452-047-05 is a programmable digital position controller in the SC450 Brushless Servo Controllers series. It provides resolver feedback, a peak output power of 2000 W at 230 VAC, and a peak current of 7.0 A. The controller weighs 2.7 kg and supports a position control range from 0 to 100,000,000 steps with a resolution of 4096 steps per revolution.
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Product Description:
The SC452-047-05 is a brushless servo controller produced by Pacific Scientific as part of the SC450 Brushless Servo Controllers series. Designed as a programmable digital position controller, it interfaces with resolver-equipped servo motors and drives axis motion in automated machinery and material-handling cells. It is suitable for applications that need coordinated starts, stops, and direction changes without a separate motion module. By combining power conversion and closed-loop control in one module, the device translates high-level motion commands into precise phase currents that control motor torque and position. This integrated approach helps keep cabinet layouts compact and reduces interconnection complexity between control and drive functions.
Under 115 VAC mains, the controller can source a continuous phase current of 4.2 A, while that rating falls to 3.5 A when supplied from 230 VAC. This dual-current arrangement allows the same hardware to support both North American and international installations. During rapid acceleration, the drive supplies a peak current of 7.0 A and delivers up to 2000 W of mechanical output at 230 VAC. Motor current is pulse-width modulated at 20 kHz, a switching frequency high enough to keep audible noise and torque ripple low. The enclosure weighs only 2.7 kg, allowing direct panel or machine-frame mounting without heavy support brackets. Rated operating temperature spans 0 to 50 °C, and internal components tolerate storage down to -55 °C. This mix of current capacity, switching speed, and low mass supports smooth motion in indexing axes, feeders, and compact automation equipment.
Positioning control is handled by a resolver feedback loop and numerical parameters managed with PacSci ServoBASIC. Resolver feedback supplies continuous rotor position information across the speed range, which supports stable closed-loop correction during commanded moves. The closed-loop system attains a positioning accuracy of 15 arcmin, fitting medium-precision indexing tasks such as conveyor gating or parts feeding. Programmable targets cover a full range of 0 to +100,000,000 steps, and each motor revolution is subdivided into 4096 steps per rev, giving fine incremental command resolution when used with gear reductions. These motion limits are stored in non-volatile memory, so repeatability is preserved after power cycling.
Frequently Asked Questions about SC452-047-05:
Q: What is the position control accuracy of the SC452-047-05 controller?
A: The SC452-047-05 controller achieves position control accuracy of 15 arcmin.
Q: What is the peak output power of the SC452-047-05 at 230 VAC?
A: This controller offers a peak output power of 2000 W when operating at 230 VAC.
Q: What type of feedback does the SC452-047-05 utilize for position detection?
A: Resolver feedback is used for position sensing in the SC452-047-05.
Q: What is the position control resolution of the SC452-047-05?
A: The controller supports a position control resolution of 4096 steps per revolution.
Q: What is the continuous current rating of the SC452-047-05 at 115 VAC?
A: This unit operates continuously at 4.2 A when supplied with 115 VAC.
