In the world of industrial automation, precision motion control is paramount. The Schneider Electric BRS39BWC61ACA represents a significant leap in stepper motor technology, combining the reliability of a stepper with the performance characteristics of a servo system.
Technical Parameters and Data
The Schneider BRS39BWC61ACA is engineered for robust performance in demanding environments. As part of the BRS3 series, it is designed for seamless compatibility with the Lexium SD3 stepper motor drive system, creating a compact and high-performance solution for complex machinery.
This motor boasts a maximum mechanical speed of 3000 rpm, allowing for high-speed operations. It delivers a substantial holding torque of 6.78 N.m, ensuring strong positioning power and the ability to maintain its position under load. The motor operates with a supply voltage of 230 V AC (325 V DC), which is a higher voltage than many standard steppers, contributing to its improved high-speed torque.
When it comes to precision, this motor offers a standard step angle of 1.8°. However, thanks to advanced drive technology, it supports extensive microstepping, allowing for resolutions up to 10,000 steps per revolution (with a step angle of 0.036°) for exceptionally smooth and precise movement. The motor's accuracy error is a minimal ±6 arc minutes, guaranteeing that every step is taken with high precision.
Physically, the motor features a flange size of 85mm and is built to last, conforming to international standards like IEC 60072-1 and EN 50347. It is designed to operate reliably in a temperature range of -25°C to 40°C and is protected to IP41 at the shaft bushing and IP56 for the total except the shaft bushing, making it resistant to dust and water ingress in most industrial settings.
Key Features and Advantages
Servo-like Performance: One of the most notable features is the application of AC servo control principles to a stepper motor. This technology, combined with the three-phase 325V high-voltage drive, significantly enhances the motor's high-speed torque, a common weakness in traditional steppers.
Exceptional Smoothness and Precision: The combination of a high number of motor poles and advanced microstepping technology results in operation that is almost free of resonance zones, crawling, and noise. This makes it ideal for applications requiring extremely smooth motion and fine positioning.
Robust Construction: The motor is built with special materials and manufacturing processes. Its critical design includes a very small air gap of just 50μm between the stator and rotor and a rotor-to-stator diameter ratio of 59%, both of which contribute to its high output torque and overall durability.
High Flexibility: This 3-phase stepper motor is versatile enough to operate at the step counts typically associated with two-phase and five-phase motors, making it a potential replacement for both in upgrade scenarios. The integrated single-turn encoder provides essential feedback for precise position control, bridging the gap between open-loop steppers and closed-loop servos.
High Reliability: Components such as the magnets are designed to withstand temperatures up to 180°C, higher than many standard magnets, contributing to the motor's long service life and reliability under thermal stress.
Typical Applications
The high torque, precision, and speed of the Schneider BRS39BWC61ACA make it perfectly suited for a wide range of automated applications. It is an excellent choice for:
Packaging Machinery: Where high-speed and precise start-stop motion is required for filling, capping, and labeling.
Textile Equipment: For controlling the precise movement of looms and other fabric-making machinery.
Printing and Paper Handling Machines: Ensuring accurate paper feed and print head positioning.
Material Handling Systems: Including conveyor belts, pick-and-place robots, and automated sorting systems that demand reliable positioning.
Advanced Industrial Automation: As part of a system controlled by a master PLC or a motion controller like the Lexium LMC, this motor is ideal for complex machines that require a compact yet powerful drive solution.
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The Schneider Electric BRS39BWC61ACA 3-phase hybrid stepper motor stands out as a superior solution for engineers and designers looking to push the boundaries of motion control. By delivering servo-like performance in a stepper motor package, it offers a compelling blend of power, precision, and smoothness. Whether you are building new machinery or upgrading existing equipment for higher performance and efficiency, this motor provides the technological edge needed to excel in today's competitive industrial landscape.
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