Reliable Motion Control for Demanding Automation
When a production line stops, every minute of downtime hits the bottom line. For maintenance engineers, choosing a servo motor that delivers consistent performance under continuous operation is critical. The B&R 8LSA57.ee030ff00-4 is engineered to meet those demands with robust construction and precise control.
This three-phase synchronous servo motor is part of the 8LSA series, known for its slim and elongated design. It is self-cooled, which simplifies installation and reduces maintenance points. The permanent-magnet, electronically commutated design ensures high dynamics and positioning precision, making it a reliable choice for modern manufacturing environments.
Key Technical Specifications of the 8LSA57.ee030ff00-4
Understanding the core parameters helps in assessing if this motor fits your application. The 8LSA57.ee030ff00-4 delivers a nominal speed of 3000 rpm and a nominal torque of 20.0 Nm. Its nominal power is 6283 W, with a nominal current of 12.3 A. These values indicate a motor capable of handling substantial loads while maintaining efficiency.
For short-duration peak demands, the motor provides a maximum torque of 90.0 Nm and a maximum current of 75.6 A. The stall torque is 29.0 Nm with a stall current of 17.8 A. The torque constant is 1.63 Nm/A, and the voltage constant is 98.44 V/1000rpm. The stator resistance is 0.356 Ohm, and the stator inductance is 5.1 mH.
The motor's electrical time constant is 14.2 ms, and the thermal time constant is 45 minutes. The moment of inertia is 20.9 kg·cm², and the mass without brake is 16.00 kg. If a brake is required, the holding torque is 27 Nm, with a brake mass of 3.50 kg and a brake inertia of 9.5 kg·cm². The cable cross-section is 4 mm², and the connector size is type 1.
Built for Reliability and Easy Maintenance
From a maintenance perspective, the 8LSA57.ee030ff00-4 offers several advantages. The self-cooled design (IC4A0A0) eliminates the need for external cooling fans, reducing potential failure points. The motor is rated for continuous operation (S1) per EN 60034-1, ensuring it can handle sustained workloads without derating under normal conditions.
Thermal protection is provided via a KTY83-110 sensor (up to rev C7) or AM-PTC1000 (rev C8/C9), with a maximum winding temperature of 155 °C. The motor is protected to IP64 per EN 60034-5, and IP65 is achievable with an optional oil seal. This level of protection helps resist dust and water ingress, which is crucial in harsh industrial environments.
The motor includes an embedded parameter chip for automatic drive identification. This simplifies setup and reduces the risk of configuration errors. The encoder options support functional safety, which is essential for applications requiring safe motion monitoring.
Application Scenarios in Modern Manufacturing
The 8LSA57.ee030ff00-4 is versatile enough for a wide range of applications. In packaging machinery, its high dynamics and positioning precision enable accurate indexing and cutting. The motor's compact size and reduced weight allow for space-saving machine designs, which is a key consideration in modern production lines.
In material handling systems, the motor's large overload capacity (maximum torque of 90.0 Nm) ensures it can handle sudden load spikes without stalling. The reduced cogging and optimized torque ripple contribute to smooth motion, which is beneficial for applications requiring precise speed control, such as printing or converting equipment.
For machine tool spindles or feed axes, the 8LSA57.ee030ff00-4 provides the necessary stiffness and responsiveness. The optional reinforced A-side bearing increases permissible radial and axial forces, making it suitable for applications with higher mechanical loads. Always consult the speed-dependent force diagrams in the technical documentation to ensure proper bearing selection.
Integration with ACOPOS Drives and Feedback Systems
The 8LSA57.ee030ff00-4 is designed to work seamlessly with B&R ACOPOS servo drives, specifically the recommended 024X model. This pairing ensures optimal performance and simplifies commissioning. The motor supports both resolver and EnDat encoder feedback options, including inductive and optical types, with single-turn or multi-turn configurations.
For functional safety, the motor encoders support safety-related position measurement. However, the Safe Torque Off (STO) function is implemented by the connected ACOPOS drive, not within the motor itself. This is an important distinction for system designers planning safety circuits.
The motor features built-in plug-in connectors, including swivel and SpeedTec types, which facilitate quick and secure wiring. A single-cable hybrid solution is also available, reducing cabling complexity and installation time. This is particularly beneficial in applications with limited space or where frequent machine changeovers occur.
Environmental and Mounting Considerations
The 8LSA57.ee030ff00-4 operates within an ambient temperature range of -15 to +40 °C, with a maximum of +55 °C. Above 40 °C, derating is required at 10% per 10 K increase. Additionally, derating of 5% per 1000 m applies above 1000 m elevation, with a maximum elevation of 2000 m (or 4000 m with ytec connectors). The maximum flange temperature is 65 °C.
Mounting configurations follow EN 60034-7, including horizontal (IM 3001), vertical attached (IM 3011), and vertical standing (IM 3031). The flange conforms to DIN 42948 Form A, and the shaft end to DIN 748 Form E. These standards ensure compatibility with a wide range of mechanical interfaces.
Frequently Asked Questions
What is the nominal torque of the 8LSA57.ee030ff00-4?
The nominal torque is 20.0 Nm, with a stall torque of 29.0 Nm. This provides a good balance for continuous and peak load requirements.
Can the 8LSA57.ee030ff00-4 be used in safety-related applications?
Yes, the motor encoders support functional safety for position measurement. However, the STO function is implemented by the connected ACOPOS drive, not the motor itself. Ensure your drive selection meets the required safety integrity level.
What is the maximum speed of this motor?
The maximum speed is 5000 rpm, while the nominal speed is 3000 rpm. This allows for operation above nominal speed when the application requires it, subject to available torque.
Does the motor require external cooling?
No, the 8LSA57.ee030ff00-4 is self-cooled with free-circulation surface cooling (IC4A0A0). This simplifies installation and reduces maintenance compared to fan-cooled variants.
Why Choose AutoDCSTech for Your B&R Components
AutoDCSTech specializes in supplying industrial automation spare parts, including the B&R 8LSA57.ee030ff00-4. We understand the importance of genuine components for system reliability. Our team can assist with product selection and availability.
We offer competitive pricing and aim to minimize lead times to keep your operations running. Contact AutoDCSTech today to inquire about the 8LSA57.ee030ff00-4 or other B&R servo motors. Our technical support can help you verify compatibility with your existing ACOPOS drives and feedback systems.
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