8MSA3L.R0-42
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The 8MSA3L.R0-42 from B & R Automation is part of the 8MS Three Phase Synchronous Motors series, featuring a pitch diameter of 126 mm and a steel construction. It weighs 5.8 kg and has an outside diameter of 130 mm and a bore diameter of 40 mm. The motor utilizes a standard involute tooth profile.
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Product Description:
The 8MSA3L.R0-42 Synchronous Motor is produced by B&R Automation for robust performance in compact spaces and it includes self-cooling operation, high torque density supported by an extended rotor-stator design and consistent current delivery even at standstill which makes it ideal for demanding, maintenance-friendly motion control applications.
The 8MSA3L.R0-42 synchronous motor reaches a rotational velocity of 3000 min-1 which is an optimal operational speed during continuous duty and it produces nearly one Nm of torque for every ampere of input current which indicates its strong electromechanical coupling. Its response to changes in voltage is represented by 1.17 ms which means its magnetic circuit reacts quickly which allows for swift current adjustment and high dynamic control. It has a resistance of 0.39 kilogram–centimeter squared to changes in angular velocity which suggests a lightweight rotor that can accelerate and decelerate very fast and its nominal mechanical output power is 190 watts which it can deliver without exceeding thermal or structural limits. It is highly efficient in producing torque with minimal energy consumption of only 0.64 amperes and it can momentarily exert the highest amount of torque of 2.6 nm which helps overcome sudden spikes in load.
This 8MS series motor utilizes a resolver as its position feedback mechanism which provides precise angular position and speed data without being affected by noise and its total mass is 1.75 kg's which suggest it is compact and relatively easy to integrate into systems where weight limitations are a factor. Its back EMF constant is 60 V/1000 min⁻¹ which indicates high sensitivity in generating voltage from rotational motion and it has a thermal constant value of 25 minutes which means it can run under load for an extended period before reaching thermal equilibrium.
Frequently Asked Questions about 8MSA3L.R0-42:
Q: How does the resolver in 8MSA3L.R0-42 improve positioning accuracy in motion systems?
A: The resolver offers analog feedback, ensuring stable and noise-resistant position signals. This enhances motor accuracy in demanding industrial automation environments.
Q: Why is high max rotational acceleration (66,667 rad/s²) beneficial in the 8MSA3L.R0-42 motor?
A: It allows the motor to quickly adapt to speed changes, ideal for fast-cycle applications. This results in improved responsiveness and productivity.
Q: What advantage does the 75 Ω stator resistance offer in this synchronous motor?
A: The higher resistance limits current draw, helping maintain stable temperature and protecting drive electronics. It ensures long-term reliability during prolonged operation.
Q: How does the 88 mH stator inductance affect performance in the 8MSA3L.R0-42 motor?
A: It smooths current waveforms during inverter switching, reducing noise and harmonic distortion. This results in better control stability and efficiency.
Q: Why is a thermal time constant of 25 minutes important in motor applications?
A: It allows the motor to operate under load longer before overheating. This supports thermal endurance in temperature-sensitive applications.
