Mitsubishi Electric HF-KP23B MELSERVO-J3 Series AC Servo Motor

Description

Engineered specifically for high-performance motion control, the Mitsubishi Electric HF-KP23B is a low-inertia AC rotary servo motor designed to interface seamlessly within the MELSERVO-J3 series platform. Operating on a 200V AC class power supply, this compact unit delivers a continuous rated output of 0.2 kW and integrates an internal electromagnetic holding brake to secure vertical or mechanical loads during power outages or system disablements. The high-resolution 18-bit encoder ensures ultra-precise feedback for demanding positioning architectures.

Key Features

• Electromagnetic Holding Brake: Factory-installed brake for secure position retention in vertical axis applications.
• High-Resolution Feedback: Employs an 18-bit absolute/incremental shared encoder providing 262,144 pulses per revolution for refined path accuracy.
• Low-Inertia Design: Highly responsive rotor construction allows for rapid acceleration and deceleration cycles.
• Environmental Protection: IP65 totally enclosed self-cooling housing prevents ingress of non-corrosive liquids and particulate matter.
• Flexible Connectivity: Out-of-the-box support for multiple command interfaces including SSCNET III, CC-Link, and general-purpose pulse/analog control depending on the paired amplifier.

Applications

• Vertical motion axes and gravity-loaded Z-axis gantries requiring active mechanical locks.
• Pick-and-place electronic assembly systems with rapid positioning requirements.
• Packaging, labeling, and continuous-feed material handling equipment.
• High-density laboratory automation and semiconductor sorting machinery.

Technical Specifications

Empirical Engineering Insights

Alternative Models & Compatibility

The HF-KP23B features an integrated holding brake, which is mechanically and electrically distinct from the standard, non-brake HF-KP23 model. When migrating or interchanging hardware, verify that the existing cabinet wiring has the brake control circuit routed. This model connects directly to standard MR-J3-20A or MR-J3-20B servo drives.

Application Pitfalls & Engineering Notes

The integrated electromagnetic brake is strictly designed as a holding brake to prevent vertical axes from dropping when power is removed. Under no circumstances should it be used as a dynamic stopping brake to decelerate rotating machinery, as this causes rapid mechanical wear on the brake lining, rendering the unit inoperable. Ensure your configuration commands deceleration through the MR-J3 amplifier prior to de-energizing the brake coils.

Commissioning & Wiring Tips

To prevent electromagnetic interference (EMI) from disrupting the sensitive 18-bit encoder signals, run the motor power/brake leads and the encoder cables in separate shielded conduits. Ensure that the 24V DC brake excitation power supply is isolated and regulated, as voltage fluctuations below 21.6V DC can cause partial brake drag, leading to rapid motor thermal overload and subsequent overcurrent faults on the amplifier.

Installation Guidelines