8LSA54.DB020S900-3
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The 8LSA54.DB020S900-3 is a synchronous servo motor manufactured by B & R Automation. As part of the 8LS Synchronous Motors series, it features a rated power of 2.0 kW and a flange size of 130 mm. The motor operates with natural convection cooling and delivers a peak torque of 19.2 Nm.
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Product Description:
The B & R Automation manufactured 8LSA54.DB020S900-3 Synchronous Motor, with a moment of inertia of 6.04 kgcm² provides sharp responsiveness in systems that experience frequent speed changes. This motor follows the EN 60034-1 standard and operates in S1 mode, which defines its application for continuous, unbroken operation at rated conditions to maintain continuous output without requiring periodic shutdowns.
The 9000 rpm top operating speed expands this motor’s application scope to high-speed rotating systems like spindle drives or servo axes. The 8LSA54.DB020S900-3 motor employs 4 pole pairs, which maximizes the electromagnetic balance and efficiency, leading to more even torque output and lower cogging at operation. This motor's 37-minute thermal time constant enables the housing and internal components to warm up over a prolonged period to reduce thermal stress over time. The thermal management of the 8LSA54.DB020S900-3 is backed by a maximum flange temperature of 65°C and a +55°C ambient operating limit, which provides for stable operation in hot industrial environments. The 2000-meter maximum installation height of this motor allows for use at high-level facilities without special derating or cooling under normal conditions.
The built-in inductive EnDat encoder system of this motor offers digital feedback with high accuracy and ruggedness. This contact-free encoder increases the positioning reliability of this motor and obliterates signal degradation due to mechanical wear. At a rated speed of 2000 rpm, this synchronous motor provides smooth, stable rotation at nominal load conditions. The 9 Nm stall torque of this synchronous motor offers holding force when the shaft is at rest to hold mechanical load in locked-up conditions. For dynamic load situations, this motor provides a maximum torque of 27.6 Nm to accommodate high-inertia starting, quick acceleration, and abrupt direction reversals without sacrificing performance.
Frequently Asked Questions about 8LSA54.DB020S900-3:
Q: Why is an inductive EnDat encoder used in the 8LSA54.DB020S900-3?
A: It ensures precise digital feedback with minimal signal noise in motion systems. This improves synchronization in closed-loop control environments.
Q: How does the motor's thermal time constant of 37 minutes benefit operations?
A: It allows the motor to absorb and release heat gradually, protecting components. This helps in maintaining safe operation during prolonged thermal cycles.
Q: Why is a stall torque of 9 Nm important in this motor?
A: It allows the motor to hold loads when stationary without losing position. This is critical for vertical axes or tension-loaded systems.
Q: What role do the 4 pole pairs play in the 8LSA54.DB020S900-3?
A: They contribute to balanced torque generation and improved motor smoothness. It reduces torque ripple, enhancing precision in low-speed applications.
Q: How does the moment of inertia value affect servo responsiveness?
A: The 6.04 kgcm² inertia supports controlled acceleration and deceleration. It prevents overshooting in position-critical applications.
