Mitsubishi Electric HG-MR43B HG-MR Series AC Servo Motor

Description

Providing high-dynamic positioning in compact industrial automation architectures, the Mitsubishi Electric HG-MR43B is an ultra-low inertia AC servo motor engineered specifically for high-duty cycle applications. Integrating an advanced electromagnetic holding brake, this motor ensures immediate load-locking and position preservation during power-down states or emergency stops. By pairing an ultra-low rotor inertia core with a high-resolution absolute feedback system, this unit delivers exceptional acceleration profiles, minimal thermal dissipation, and micro-precision motion synchronization when driven by compatible MELSERVO MR-J4 servo amplifiers.

Features

• Ultra-Low Inertia Rotor: Optimized for rapid start-stop duty cycles, permitting high-frequency positioning sequences without thermal overload.
• Integrated Safety Brake: Electromagnetic holding brake provides secure physical axis locking when control power is deactivated.
• High-Resolution Feedback: Outfitted with a high-density encoder to achieve outstanding path tracking, velocity control, and positioning repeatability.
• Rugged Environmental Execution: IP65-compliant casing protects critical internal windings and active electronics against industrial moisture and particulate contamination.

Applications

• High-speed pick-and-place robotic systems and multi-axis Cartesian gantries.
• Precision electronic assembly machinery and semiconductor wafer handling equipment.
• In-line rotary packaging, labeling, and continuous form-fill-seal machines.
• Dynamic material handling diverters and indexing rotary tables.

Technical Specifications Table

Connections and Interfaces

Empirical Engineering Insights

Alternative Models & Compatibility

This model serves as the physical and electrical successor to the older HF-KP43B series. While physical mounting dimensions (flange size and pilot diameter) remain identical to ease mechanical retrofits, the encoder feedback architecture is fundamentally upgraded to 22-bit serial communication. Because of this, it must be paired with MR-J4 series amplifiers. Attempting to run this motor on older MR-J3 amplifiers will cause initialization and encoder serial communication handshake faults.

Application Pitfalls & Engineering Notes

The integrated electromagnetic brake is strictly a holding brake and must never be utilized for dynamic braking or load deceleration during operation. Forcing the electromagnetic brake to absorb rotational kinetic energy will rapidly glaze the internal friction plates, causing permanent loss of holding torque. Standard configuration must reserve brake activation for zero-speed scenarios or power outages.

Commissioning & Wiring Tips

To eliminate high-frequency electromagnetic interference (EMI) from inducing feedback tracking errors (such as AL 37 or AL 50 on the drive), ensure the encoder cable shield is clamped to the servo amplifier ground plate. Do not route the encoder feedback line immediately parallel to high-power AC lines; a minimum separation of 100 mm is recommended unless adequate metallic conduit segregation is established.

Installation Guidelines