Solving the Challenge of High-Dynamics Positioning
In modern manufacturing, engineers often face a difficult trade-off: they need high positioning accuracy and fast dynamic response, but the available space is limited and weight budgets are tight. The B&R 8LSA57.ee022ffgg-4 three-phase synchronous servo motor directly addresses this engineering challenge. Its slim, elongated design and permanent-magnet construction deliver high dynamics without sacrificing compactness, making it a practical solution for applications where every millimeter counts.
This motor is part of the 8LSA series, known for its reduced cogging and optimized torque ripple. These features translate into smoother motion and better controllability, which are essential for precise positioning tasks. The integrated parameter chip simplifies drive setup by enabling automatic drive identification, reducing commissioning time and potential for error.
Technical Specifications and Performance
The 8LSA57.ee022ffgg-4 is engineered for demanding motion control tasks. With a nominal speed of 2200 rpm and a maximum speed of 5000 rpm, it offers a wide operating range. The motor delivers a nominal torque of 23.0 Nm and a stall torque of 29.0 Nm, providing strong continuous performance. For short bursts, it can produce a maximum torque of 90.0 Nm, which is valuable for overcoming peak loads during acceleration or cutting cycles.
The electrical characteristics are equally robust. The motor has a nominal current of 10.4 A and a stall current of 13.1 A, with a maximum current of 55.6 A. The torque constant of 2.22 Nm/A indicates efficient torque generation per ampere. The stator resistance is 0.560 Ohm, and the stator inductance is 8.1 mH. These parameters ensure predictable behavior under varying load conditions.
Mechanically, the motor is built to last. It has a moment of inertia of 20.9 kg·cm² and a mass of 16.00 kg without the brake. The optional brake provides a holding torque of 27 Nm and adds 3.50 kg to the mass. The motor is self-cooled with free-circulation surface cooling (IC4A0A0) and meets IP64 protection per EN 60034-5, with IP65 available when an optional oil seal is fitted.
Real-World Application Example
Consider a high-speed packaging line where a servo motor must index a cutting head precisely between products. The 8LSA57.ee022ffgg-4 excels in this scenario. Its high overload capacity (maximum torque of 90.0 Nm) allows rapid acceleration and deceleration, while the reduced cogging ensures smooth motion at low speeds. The compact design fits into tight machine frames, and the self-cooled construction eliminates the need for external fans, simplifying installation and maintenance.
In another typical application, a material handling system requires precise vertical positioning. The motor's holding brake (27 Nm) safely secures the load when the drive is de-energized. The encoder feedback options, including EnDat and resolver, provide accurate position data for closed-loop control. The motor's IP64 rating protects against dust and water splashes, making it suitable for washdown environments.
Compatibility and Integration
The 8LSA57.ee022ffgg-4 is designed to work seamlessly with B&R's ACOPOS servo drives. The recommended drive is the ACOPOS 017X series. The motor features a built-in parameter chip that automatically identifies the motor to the drive, simplifying setup and ensuring optimal performance. Feedback options include resolver (R0/R2) or EnDat encoders (inductive or optical), with single-turn or multi-turn variants available. For safety-related applications, encoders supporting functional safety are available.
The motor uses built-in plug-in connectors, including swivel and SpeedTec types. A single-cable hybrid solution is also available, which combines power and feedback in one cable, reducing wiring complexity. The -4 generation includes a center hole per DIN 332 Form D and uses speedtec (923) or itec/ytec/htec (723) connection systems. Note that the elevation limit is 2000 m with speedtec connectors and 4000 m with ytec connectors.
Business Value and ROI
Investing in the 8LSA57.ee022ffgg-4 can reduce total cost of ownership. Its high efficiency and dynamic performance can increase machine throughput, while the robust construction minimizes downtime. The self-cooled design eliminates the need for external cooling fans, saving energy and reducing maintenance. The integrated parameter chip reduces commissioning time, and the availability of functional safety encoders can simplify safety system design.
From a supply chain perspective, AutoDCSTech provides reliable sourcing for this motor. We understand that unplanned downtime is costly, so we maintain a ready inventory of critical spare parts. Our team can help you verify the correct model and configuration for your application, ensuring you get the right part the first time.
Frequently Asked Questions
What is the maximum speed of the 8LSA57.ee022ffgg-4?
The maximum speed is 5000 rpm, while the nominal speed is 2200 rpm. This wide speed range allows the motor to be used in applications requiring both high-speed operation and precise low-speed positioning.
What cooling method does this motor use?
The motor is self-cooled with free-circulation surface cooling (IC4A0A0). This means it does not require an external fan or water cooling, simplifying installation and reducing maintenance. The thermal time constant is 45 minutes, and the insulation class is F per IEC 60085.
What feedback options are available?
Feedback options include resolver (R0/R2) or EnDat encoders, which can be inductive or optical. Single-turn and multi-turn versions are available. For safety-related applications, encoders supporting functional safety are available. The motor also has an embedded parameter chip for automatic drive identification.
Is the motor suitable for vertical applications?
Yes, the motor can be mounted in any orientation per EN 60034-7 (IM 3001, IM 3011, IM 3031). An optional holding brake with a torque of 27 Nm is available to secure the load when the drive is off. The brake adds 3.50 kg to the motor mass and has a moment of inertia of 9.5 kg·cm².
Conclusion
The B&R 8LSA57.ee022ffgg-4 is a versatile servo motor that solves the challenge of high-dynamics positioning in compact spaces. Its combination of high torque, wide speed range, and robust construction makes it suitable for a variety of industrial applications. With multiple feedback options and compatibility with ACOPOS drives, it integrates easily into existing systems.
For engineers seeking a reliable, high-performance motion control solution, the 8LSA57.ee022ffgg-4 is a strong candidate. Contact AutoDCSTech today to check availability and get a quote. Our team is ready to support your automation needs with expert advice and fast delivery.
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