8JSA33.R0045D000-0
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The 8JSA33.R0045D000-0 is a screw-mounted synchronous motor module with an operating temperature range of -40°C to +125°C. Manufactured by B & R Automation as part of their 8JS Synchronous Motors series, it features a current rating of 45A and an isolation voltage of 2500V. Additionally, it offers a surge current capacity of 470A.
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Product Description:
The 8JSA33.R0045D000-0 Synchronous Motor by B & R Automation comes with a nominal speed of 3000 rpm to provide medium to high-speed support without compromising torque stability. The stall current of this synchronous motor is 2.58 A, which represents its current consumption in locked rotor situations.
For electrical response properties, there is 9.01 Ω stator resistance that supports this motor's effective thermal performance and voltage regulation. This is complemented by an electrical time constant of 2.1 ms, which has an impact on this motor's dynamic response during voltage changes. The rotor design of this synchronous motor comes with a moment of inertia of 0.85 kgcm², which provides an optimal compromise between dynamic acceleration and load stability. This motor provides efficient operation in an ambient temperature range of 5°C to 40°C under controlled industrial conditions to ensure high performance. For storage, the 8JSA33.R0045D000-0 motor can handle a maximum relative humidity of 90%, subject to non-condensation conditions, to avoid moisture-induced damage. On the outside, this synchronous motor is covered with a polyester powder coating that improves corrosion and surface wear resistance and maximizes the operational life.
This synchronous motor comes with a resolver encoder providing precise position sensing throughout its range. This resolver feedback guarantees stable signals even in the presence of electrical noise, thus making this motor well-suited for closed-loop control applications. This synchronous motor delivers a nominal torque output of 2.29 Nm and maintains a consistent torque level under steady load. The torque constant of this motor is 1.1 Nm/A, which enables it to provide predictable torque output per unit of current. For high-demand applications, the 8JSA33.R0045D000-0 motor has a maximum of 12.9 A of current capacity, which permits short-duration bursts of increased torque output when necessary.
Frequently Asked Questions about 8JSA33.R0045D000-0:
Q: Why is the resolver encoder preferred in the 8JSA33.R0045D000-0 motor over optical encoders?
A: Resolver encoders are more robust in high-vibration and high-temperature environments. They also deliver stable position feedback even in electrically noisy industrial settings.
Q: How does the electrical time constant of 2.1 ms benefit dynamic applications?
A: A low electrical time constant enables quicker current rise time, improving responsiveness to rapid load or speed changes.
Q: What role does the 9.01 Ω stator resistance play in thermal management?
A: It limits excessive current flow, thereby reducing heat generation and enhancing the motor's thermal efficiency during continuous operation.
Q: Why is the torque constant of 1.1 Nm/A important for the 8JSA33.R0045D000-0?
A: It allows engineers to calculate exact torque output based on current input, which is crucial for consistent closed-loop performance.
Q: How does the rotor inertia of 0.85 kg·cm² impact motion control?
A: It strikes a balance between fast acceleration and maintaining stability during sudden directional changes or deceleration.
