MITSUBISHI HC-KFS23K-S49

Description

Product Overview

The MITSUBISHI HC-KFS23K-S49 is a high-performance, low-inertia servo motor from Mitsubishi Electric’s extensive MELSERVO-JN series. This motor is engineered to deliver exceptional precision, responsiveness, and reliability in demanding motion control applications. Designed to be paired with a compatible Mitsubishi servo amplifier (e.g., MR-JN series), the core function of the MITSUBISHI HC-KFS23K-S49 is to convert electrical control signals from the amplifier into highly accurate rotational motion, providing precise control over position, speed, and torque. It is a key component in modern automated machinery requiring fast acceleration, precise stopping, and smooth operation. For complete specifications, connection diagrams, and support documentation, please visit the official product resource: MITSUBISHI HC-KFS23K-S49. The selection of a motor like the HC-KFS23K-S49 is critical for achieving the desired dynamic performance and mechanical compatibility in automated systems.

Product Parameters and Specifications

• Motor Type: Low-Inertia, Rotary AC Servo Motor.
• Rated Output Power: Typically 200W (0.2kW), suitable for small to medium-duty applications.
• Rated Speed: Standard rating, often 3000 rpm.
• Rated Torque: A key parameter, typically in the range of 0.64 Nm, defining the continuous rotational force it can exert.
• Max. Torque: Significantly higher than rated torque (e.g., 1.9 Nm) for short-term overload conditions during acceleration or deceleration.
• Encoder: Equipped with a high-resolution absolute encoder (e.g., 22-bit), providing precise feedback on motor position to the amplifier for closed-loop control.
• Shaft: Standard keyed shaft design.
• Brake: The -S49 suffix indicates the motor is equipped with an integral electromagnetic holding brake, which engages when power is removed to prevent movement and hold a load.
• Frame Size: Compact and standardized (e.g., 40mm frame).

Advantages and Key Features

The MITSUBISHI HC-KFS23K-S49 offers distinct advantages for precision motion. Its low rotor inertia design enables extremely high responsiveness, allowing for very fast acceleration and deceleration rates, which reduces cycle times in repetitive machines. The inclusion of a high-resolution absolute encoder eliminates the need for a homing routine on power-up, improves positioning accuracy, and enhances system reliability. The integrated electromagnetic holding brake (option S49) is a critical safety and functionality feature for vertical axis control or for holding loads securely when power is off. The motor is designed for high efficiency and low heat generation, contributing to energy savings and longer service life. Furthermore, the MITSUBISHI HC-KFS23K-S49 is built with robust construction for high durability in industrial environments, featuring high-quality bearings and advanced insulation materials.

Application Cases in Industry

This servo motor is ideal for applications requiring quick, precise movement. In Semiconductor and Electronics Manufacturing, it is used in chip mounting machines, wire bonders, and PCB handling robots for precise positioning. Within Packaging Machinery, the HC-KFS23K-S49 drives functions like high-speed pick-and-place units, filling heads, and label applicators where speed and accuracy are paramount. For Automated Assembly Lines, it powers small robotic arms, screwdriving units, and precision slides. In Printing and Textile Machinery, it controls registration, tension, and feed rolls. The brake-equipped MITSUBISHI HC-KFS23K-S49 is particularly suited for vertical Z-axis drives in CNC tool changers or 3D Printers, where it securely holds the position against gravity when de-energized.

Comparison with Competing Products

Compared to standard AC induction motors with variable frequency drives (VFDs), the HC-KFS23K-S49 provides far superior positioning accuracy, torque control, and dynamic response. Within the servo motor market, compared to similar models from Yaskawa (Sigma-5 series) or Siemens (SIMOTICS S-1FL6), the MITSUBISHI HC-KFS23K-S49 competes directly on core performance metrics like power, torque, and inertia. Key differentiators often lie in the ecosystem integration with Mitsubishi’s own PLCs (MELSEC) and amplifiers (MR-JN), offering simplified tuning and setup through dedicated software like MR Configurator2. The specific encoder technology, connector types, and mechanical mounting dimensions are also primary factors for comparison and direct replacement.

Selection Suggestions and Precautions

• Selection Advice:
  1. Load Analysis: Carefully calculate the required torque (continuous and peak) and inertia of the driven load. The MITSUBISHI HC-KFS23K-S49 must meet or exceed these values with an appropriate safety margin.
  2. Amplifier Matching: The motor must be correctly matched with a Mitsubishi servo amplifier (e.g., MR-JN-20A or similar) with compatible voltage and current ratings. The amplifier model must support the motor’s encoder type.
  3. Brake Necessity: Select the brake version (-S49) only if the application requires holding a load against gravity (vertical axis) or preventing movement during power loss. For horizontal axes, a non-brake version may be sufficient and more cost-effective.
  4. Mechanical Compatibility: Verify the shaft size, keyway, flange mounting, and connector orientation match your mechanical design.
• Important Precautions:
  1. Cabling: Always use the specified Mitsubishi recommended or compatible servo motor cables for power, encoder, and brake connections. Incorrect cabling can cause noise, malfunction, or damage.
  2. Regenerative Energy: For high-cycle applications with rapid deceleration, ensure the paired servo amplifier has an appropriately sized regenerative resistor or unit to handle the energy dissipated by the HC-KFS23K-S49.
  3. Environmental Conditions: Protect the motor from excessive dust, oil, and moisture unless a specific sealed version is selected. Ensure ambient temperature is within the specified operating range.
  4. Handling: Do not strike or apply undue force to the shaft or encoder. Always support the motor body during installation, never lift it by the cables.

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