Mitsubishi Electric Servo Motor HG-JR1534B Core Design Philosophy of Low Inertia for High-Speed and High-Accuracy Motion Control

Mitsubishi Electric HG-JR1534B: A High-Performance Servomotor for Demanding Automation Applications

In the realm of industrial automation, precision, reliability, and dynamic performance are not merely desirable traits—they are fundamental requirements for achieving superior machine productivity and operational efficiency. Mitsubishi Electric, a globally recognized leader in automation technology, addresses these needs with the HG-JR1534B, a low-inertia, medium-capacity servomotor engineered to excel in high-frequency and high-acceleration applications. This model represents a sophisticated fusion of robust power, advanced control, and exceptional environmental durability, making it an ideal drive solution for a wide spectrum of industrial machinery.

The HG-JR1534B is an integral component of the high-performance MELSERVO-J4 series ecosystem, designed to deliver the speed and torque responsiveness that modern manufacturing processes demand. It is particularly suited for applications where rapid cycling, precise positioning, and consistent performance under strenuous conditions are critical. From the high-speed repetitive motions of packaging and assembly robots to the precise feed control in printing and food processing machinery, this servomotor provides the mechanical power and control fidelity necessary to shorten cycle times and enhance overall equipment effectiveness.

Core Design Philosophy: Low Inertia for High Dynamic Response

The "low inertia" characteristic of the HG-JR1534B's rotor is central to its performance profile. A low-inertia rotor possesses minimal resistance to changes in rotational speed, allowing it to accelerate and decelerate with remarkable agility

. This design principle yields significant operational advantages:

• Reduced Settling Time: The motor can reach its target position more quickly and with minimal overshoot or vibration, leading to faster completion of move-and-stop cycles.

• Shorter Cycle Times: The ability to perform rapid acceleration and deceleration directly translates into a higher number of operational cycles per minute, boosting machine throughput.

• Reduced Load on the Servo Amplifier: The lower torque requirement for acceleration allows for optimal synergy with its matched servo amplifier, such as the MR-J4-□B models, ensuring a stable and efficient system.

Exceptional Performance and Robust Construction

The HG-JR1534B is built to deliver consistent, powerful performance. With a rated output of 1.5 kW and a rated speed of 3000 rpm, it offers a robust foundation for various drive tasks

. Its torque capabilities are particularly impressive, with a rated torque of 4.8 Nm and a peak torque reaching 14.3 Nm

. This high peak torque, approximately 300% of the rated value, provides a substantial reserve for overcoming instantaneous load shocks or driving through momentary resistance without losing positional accuracy.

Durability in harsh industrial environments is a key consideration. The motor boasts an IP67 protection rating, signifying that it is completely dust-tight and can withstand immersion in water up to 1 meter for 30 minutes

. This makes it exceptionally suitable for applications that require frequent washdowns, such as in food and beverage or pharmaceutical manufacturing. Furthermore, the motor is equipped with a built-in electromagnetic brake, a critical safety and holding feature for vertical axes or applications requiring secure stopping

.

Precision Control through High-Resolution Feedback

At the heart of the servomotor's precision is its high-resolution encoder. The HG-JR1534B incorporates a multi-turn absolute encoder with a resolution of 131,072 pulses per revolution (17-bit)

. This exceptionally fine feedback allows the accompanying MR-J4 servo amplifier to exercise precise control over the motor's position, velocity, and torque. The result is exceptionally smooth rotation even at very low speeds and unparalleled positioning accuracy, which is vital for applications like precision machining or electronic component assembly.

Seamless System Integration and Advanced Intelligence

A standout feature of the HG-JR1534B is its role within the broader MELSERVO-J4 system. When paired with an MR-J4 series servo amplifier, it forms an intelligent motion control network that is greater than the sum of its parts. This system supports a wide array of field networks, including CC-Link IE Field, PROFINET, EtherCAT, and EtherNet/IP, ensuring easy integration into virtually any factory automation environment.

The system also incorporates advanced, intelligent functions that simplify setup and optimize performance:

• Advanced Vibration Suppression Control II: This feature automatically identifies and suppresses mechanical vibration frequencies, drastically reducing settling time and minimizing wear on mechanical components, which is especially beneficial for systems with long arms or flexible structures

• .

• One-Touch Tuning: This function greatly simplifies commissioning by allowing the servo amplifier to automatically configure the optimal gain parameters for the connected mechanical system, significantly reducing setup time and requiring less expert knowledge

• .

• Real-Time Autotuning: The system continuously monitors the load condition and dynamically adjusts the gains to maintain optimal performance, ensuring consistent operation even as machine characteristics change over time

• .

Energy Efficiency and Operational Reliability

In an era focused on sustainable manufacturing, the HG-JR1534B addresses energy efficiency through its high-performance design, which minimizes electrical losses and converts more input power into useful mechanical work. This not only reduces operational costs but also lowers thermal stress, contributing to the motor's long-term reliability. The use of an absolute encoder eliminates the need for backup batteries to maintain positional data, simplifying maintenance and removing a potential point of failure.

Technical Specifications of the HG-JR1534B

The following table provides a consolidated overview of the key technical parameters for the Mitsubishi Electric HG-JR1534B servomotor:

Conclusion: The Strategic Drive for Advanced Automation

The Mitsubishi Electric HG-JR1534B is more than just a source of rotary motion; it is a comprehensive, high-performance drive solution engineered for the challenges of modern industrial automation. Its low-inertia design enables blistering dynamic response, its high-torque output ensures reliable operation under load, and its rugged IP67 construction guarantees longevity in demanding environments. When integrated into the intelligent MELSERVO-J4 platform, it delivers unparalleled performance, simplified tuning, and seamless connectivity. For machine builders and system integrators aiming to achieve new heights in speed, precision, and reliability, the HG-JR1534B represents a strategic investment that drives productivity and competitive advantage.