Mitsubishi Electric HF-SP202B HF-SP Series Medium Inertia AC Servo Motor

Description

Optimized for heavy-duty industrial positioning, the Mitsubishi Electric HF-SP202B operates as a high-performance, medium-inertia AC servo motor equipped with an integrated electromagnetic holding brake. Engineered specifically for integration with the MELSERVO-J3 drive platform, this brushless motor delivers stable speed control and exceptional torque-to-inertia performance in demanding dynamic applications. The robust physical construction, featuring high-grade winding insulation and dust/water protection, ensures long-term operational reliability on the factory floor.

Key Features

• Medium Inertia Design: Perfectly balanced rotor inertia minimizes mechanical resonance and load mismatching in belt-driven or high-mass systems.
• Electromagnetic Holding Brake: Factory-installed 24VDC electromagnetic brake prevents axis drop or drift during power-loss or control-disable states.
• High-Resolution Feedback: Designed for seamless interface with absolute/incremental encoder systems to ensure sub-micron position repeatability.
• Industrial Enclosure: Sealed connection architecture protects internal windings from standard industrial particulate and moisture ingress.

Applications

• CNC Machine Tools: Precise feed axis control for milling, turning, and grinding equipment.
• Material Handling Systems: Driving vertical transfer lifts, gantry robots, and automated storage/retrieval systems (ASRS).
• Packaging Machinery: Rotary indexers, cartoners, and high-speed packaging feed lines requiring rapid stop-start cycles.
• Automotive Assembly: Multi-axis welding positioners and robotic articulation joints.

Technical Specifications

Connections and Interfaces

Empirical Engineering Insights

Alternative Models & Compatibility

The HF-SP202B is natively matched with the 200V class MR-J3-200A and MR-J3-200B servo amplifiers. When transitioning legacy plants from older MR-J2S setups (such as HC-SFS202B motors), users must account for differences in encoder communication protocols and connector pinouts. Upgrading to the MR-J4 series requires a conversion cable or opting for the HG-SR202B motor equivalent, which features updated encoder architecture.

Application Pitfalls & Engineering Notes

A common failure point in vertical-axis installations is using the electromagnetic brake to decelerate or stop a moving load. The brake on the HF-SP202B is designed strictly as a static holding brake; engaging it while the shaft is spinning at 2000 r/min will cause rapid friction wear and catastrophic mechanical brake failure. Ensure your PLC or drive logic decelerates the motor to 0 r/min before dropping the brake control relay.

Commissioning & Wiring Tips

Always install a dedicated surge absorber (diode or varistor) in parallel with the 24VDC brake control relay coil to prevent high-voltage inductive spikes from damaging the amplifier output cards or PLC DO modules. Route encoder cables in separate grounded steel conduits away from high-current motor power cables to minimize electromagnetic interference (EMI) which can cause encoder feedback faults.

Installation Guidelines