B&R 8LSA75.DB030S100-3 Synchronous Motor  30Nm, 3000rpm, 400V, IP64 rated for industrial automation

Introduction to Synchronous Servo Motor Technology

The B&R 8LSA75.DB030S100-3 Synchronous Motor represents a high-performance servo motor from B&R Industrial Automation, engineered to deliver the precise torque, speed, and positioning accuracy that modern automation systems demand. With a rated torque of 30 Nm, maximum speed of 3000 rpm, and 400V AC three-phase operation, this motor sits at the upper end of B&R's 8LS series  a product family renowned for its exceptional dynamic response, compact power density, and seamless integration with the ACOPOS servo drive platform.

Synchronous servo motors differ fundamentally from standard induction motors in their rotor construction and operating principles. While induction motors rely on slip  the difference between the rotating magnetic field speed and actual rotor speed  to induce rotor currents and generate torque, synchronous motors use permanent magnets embedded in the rotor to lock the rotor position precisely to the stator field rotation. This synchronous operation eliminates slip entirely, resulting in superior speed holding accuracy (typically ±0.01%), faster dynamic response to load changes, and significantly higher torque density for a given motor frame size.

B&R Industrial Automation, headquartered in Austria with global manufacturing and support infrastructure, has established itself as a leading provider of automation solutions for machine building, factory automation, and process industries. The company's ACOPOS (AC Open Power Operating System) drive family, when paired with 8LS series motors like the 8LSA75, forms a complete motion control ecosystem that handles everything from simple point-to-point positioning to complex multi-axis coordinated motion with electronic camming, gearing, and flying shear applications.

This comprehensive technical guide explores the B&R 8LSA75.DB030S100-3 in detail  from its mechanical construction and electrical specifications to its integration within ACOPOS drive systems, application in precision machinery, and the advantages it delivers over conventional motor technologies. Whether you are designing a new machine, upgrading existing motion control capabilities, or sourcing a replacement servo motor for maintenance purposes, this article provides the technical depth you need.

Product Overview

The B&R 8LSA75.DB030S100-3 is a three-phase permanent magnet synchronous servo motor from B&R's 8LSA series, specifically the 75 frame size variant with the DB030S100-3 configuration code. The "8LS" prefix identifies the high-performance servo motor family, while "A75" specifies the frame size and length designation. The "DB030S100-3" suffix encodes critical configuration parameters including the winding specification (optimized for 400V operation), feedback device type (typically encoder or resolver), shaft configuration, brake option, and protection rating.

This particular motor carries Revision C8, indicating the current hardware and manufacturing revision level. Revision C8 incorporates all engineering improvements, material updates, and manufacturing process refinements accumulated through the product's production history. The E360421 reference code provides additional traceability to specific manufacturing batches and quality control records.

With a rated torque output of 30 Nm, this motor delivers substantial mechanical power for its frame size. At the rated 3000 rpm speed, the mechanical output power calculates to approximately 9.4 kW  a power density that would require a significantly larger induction motor to achieve equivalent performance. The 30 Nm torque rating makes this motor suitable for demanding applications including direct-drive extruder screws, large conveyor systems, rotary tables for machining centers, high-force linear axis drives through ball screws, and winding/unwinding applications in converting machinery.

The motor's IP64 protection rating provides complete protection against dust ingress (the "6" rating  dust-tight) and protection against water splashing from any direction (the "4" rating). This protection level is standard for industrial servo motors installed in factory environments where coolant mist, metal chips, dust, and occasional water exposure are common. For applications requiring washdown capability or submersion resistance, additional protective measures or higher IP-rated motors would be necessary.

The substantial 27.8 Kg weight reflects the motor's robust construction  high-grade permanent magnets, precision-machined rotor assembly, high-fill-factor copper windings, and substantial bearing system designed for long service life under continuous industrial duty cycles. This is not a lightweight consumer-grade motor; it is an industrial power component engineered for years of reliable service in demanding manufacturing environments.

Technical Specifications

Key Features & Benefits

• 30 Nm Continuous Torque: Delivers substantial torque output for demanding industrial applications including large conveyor drives, extruder systems, rotary tables, and high-force positioning axes. The 30 Nm rating provides ample torque margin for acceleration, deceleration, and overload conditions.
• 3000 RPM Maximum Speed: The 3000 rpm speed capability enables high-throughput applications while maintaining precise speed regulation. The wide speed range supports both low-speed high-torque positioning and high-speed rapid traverse operations.
• 400V Three-Phase Operation: Designed for standard European/international 400V industrial power systems. The high voltage rating reduces current requirements for a given power level, minimizing cable sizes and voltage drop considerations in large machines.
• ACOPOS Drive Compatibility: Engineered for seamless integration with B&R's ACOPOS servo drive family. The motor's electrical parameters, feedback configuration, and mechanical dimensions are fully supported by ACOPOS drive firmware and commissioning tools.
• IP64 Environmental Protection: Dust-tight construction with water splash protection enables reliable operation in typical industrial environments. The IP64 rating protects against dust ingress, coolant mist, metal chips, and incidental water exposure.
• Permanent Magnet Synchronous Design: Delivers superior efficiency, torque density, and dynamic response compared to induction motors. Synchronous operation eliminates slip, providing precise speed holding and rapid response to velocity command changes.
• High-Resolution Feedback System: The DB030S100-3 configuration includes a high-resolution feedback device (encoder or resolver) that provides the precise rotor position information required for accurate vector control, smooth low-speed operation, and precise positioning.
• Rugged 27.8 Kg Construction: Heavy-duty mechanical design with premium bearings, precision-balanced rotor, and high-grade permanent magnets ensures years of reliable service in continuous-duty industrial applications.

Industrial Applications

CNC Machine Tools and Machining Centers

The B&R 8LSA75 is an excellent choice for CNC machine tool axis drives, particularly for large machining centers where high torque is required to accelerate heavy tables and workpieces. The 30 Nm torque rating supports direct coupling to ball screw drives for X, Y, and Z axes in medium to large vertical machining centers, horizontal boring mills, and gantry-style machines. The motor's dynamic response enables fast positioning moves between cutting operations while maintaining the smooth, precise motion required during actual machining to achieve tight surface finish and dimensional tolerances.

Plastic Extrusion Machinery

Single-screw and twin-screw extruders require high torque at low to moderate speeds to drive the screw through viscous molten polymer. The 8LSA75's 30 Nm torque rating and ability to maintain rated torque down to very low speeds make it well-suited for direct-drive extruder applications. The ACOPOS drive's torque control mode enables precise control of melt pressure, while the motor's robust construction tolerates the continuous-duty operation typical of extrusion production environments.

Converting and Winding Equipment

In the converting industry  which transforms raw materials like paper, film, foil, and nonwovens into finished products  precise tension control is essential. The 8LSA75 serves as a winding/unwinding motor or main drive motor in slitting machines, laminators, coating lines, and printing presses. The ACOPOS drive's integrated winder function block, combined with the motor's precise torque control, enables constant tension maintenance across varying roll diameters without requiring external tension controllers.

Packaging and Palletizing Systems

Large-scale packaging machinery and robotic palletizing systems demand motors capable of rapid acceleration, precise positioning, and continuous high-duty-cycle operation. The 8LSA75's 30 Nm torque enables fast acceleration of heavy packaging machinery components and full pallet loads, while its IP64 protection ensures reliability in environments where dust, debris, and occasional washdown are routine.

Metal Forming and Press Applications

Press feeds, coil handling equipment, and roll forming machines require motors with high torque and the ability to withstand repeated acceleration and deceleration cycles. The 8LSA75's synchronous design provides the fast response and precise stopping accuracy needed for roll feed mechanisms that advance sheet metal into stamping presses with micron-level positioning accuracy.

ACOPOS Drive Integration

The B&R 8LSA75 derives its full performance potential when paired with a compatible B&R ACOPOS servo drive. ACOPOS drives implement field-oriented vector control algorithms that precisely regulate motor torque, speed, and position by independently controlling the direct (flux-producing) and quadrature (torque-producing) current components. This mathematical separation of flux and torque control enables the motor to respond to dynamic load changes within milliseconds  far faster than achievable with traditional V/Hz control methods.

ACOPOS drives support multiple operating modes that can be switched dynamically during operation:

• Torque Mode: The drive maintains a programmed torque output regardless of speed changes. Essential for winding, tension control, and force-controlled applications.
• Speed Mode: The drive maintains programmed speed by automatically adjusting torque to compensate for load variations. Used in conveyor drives, pump applications, and continuous processes.
• Position Mode: The drive moves to and maintains a programmed position with high accuracy. Supports absolute and relative positioning, homing sequences, and cam profiles.
• Electronic Gearing: The motor's motion is electronically coupled to a master encoder or another axis with programmable gear ratio. Enables synchronized multi-axis motion without mechanical linkages.
• Electronic Camming: The motor follows a programmable cam profile, enabling complex synchronized motion for packaging, printing, and assembly applications.

Related Products from Auto2mation

Complete your motion control and automation systems with these related products from Auto2mation:

• B&R Servo Motors (8LSP93 Series) — Additional B&R servo motor options for ACOPOS systems with various torque and speed ratings.
• Mitsubishi FR-A740-45K Frequency Inverter — 45kW vector control drive with built-in PLC for general-purpose motor control applications.
• GE IS215VCMIH2CC VME Controller — Mark VI Speedtronic communication board for turbine control and power generation systems.
• NOV 10057078-001 Digital Field Supply — K05H1000 Rev C field supply for top drive drilling systems with AD202JY isolation amplifier.
• Azbil HD-MBU200 Redundancy System — Safety instrumented system with redundant FX-bus for critical process control.
• Schneider ATS48 Soft Starter — Altistart 48 series for controlled starting of three-phase motors at 230-415V AC.
• Siemens SCR Thyristor Module — High-power thyristor for phase control in DC drives and industrial power conversion.

Frequently Asked Questions (FAQ)

External Technical Resources

• B&R Industrial Automation Official Website — Explore B&R's complete automation portfolio including ACOPOS drives, 8LS servo motors, X20 I/O systems, and Automation Studio software.
• AC Motor — Wikipedia — Comprehensive technical overview of AC motor types including synchronous and induction motors, operating principles, and industrial applications.

Why Choose Auto2mation

Auto2mation brings decades of combined experience in industrial motion control and servo system applications to every customer engagement. We understand that servo motors are precision components where quality, compatibility, and reliability cannot be compromised. Every B&R 8LSA75 in our inventory undergoes rigorous testing and inspection to ensure it meets the performance standards your automation systems demand.

Our global network enables us to source hard-to-find servo motors and drives from leading manufacturers including B&R, Siemens, Mitsubishi, Allen-Bradley, and many others. Whether you need a single replacement motor for an urgent repair or are planning a complete machine build with multiple axis requirements, Auto2mation provides competitive pricing, technical support, and reliable delivery.

We recognize that downtime in automated manufacturing costs money — not just in lost production, but in missed delivery commitments and idle labor. That's why we maintain substantial inventory levels and offer rapid worldwide shipping. When you need a 30 Nm servo motor for your ACOPOS system, Auto2mation delivers.