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
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Medium Inertia Design: Perfectly balanced rotor inertia minimizes mechanical resonance and load mismatching in belt-driven or high-mass systems.
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Electromagnetic Holding Brake: Factory-installed 24VDC electromagnetic brake prevents axis drop or drift during power-loss or control-disable states.
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High-Resolution Feedback: Designed for seamless interface with absolute/incremental encoder systems to ensure sub-micron position repeatability.
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Industrial Enclosure: Sealed connection architecture protects internal windings from standard industrial particulate and moisture ingress.
Applications
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CNC Machine Tools: Precise feed axis control for milling, turning, and grinding equipment.
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Material Handling Systems: Driving vertical transfer lifts, gantry robots, and automated storage/retrieval systems (ASRS).
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Packaging Machinery: Rotary indexers, cartoners, and high-speed packaging feed lines requiring rapid stop-start cycles.
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Automotive Assembly: Multi-axis welding positioners and robotic articulation joints.
Technical Specifications
| Parameter |
Value / Specification |
| Manufacturer |
Mitsubishi Electric |
| Model Number |
HF-SP202B |
| Motor Series |
HF-SP (Medium Inertia / Medium Capacity) |
| Rated Output |
2.0 kW |
| Rated Speed |
2000 r/min |
| Maximum Speed |
3000 r/min |
| Rated Torque |
9.5 N-m |
| Electromagnetic Brake |
Installed (24VDC Holding Type) |
| Ambient Operating Temperature |
0 to 40 degC (non-freezing) |
| Ambient Storage Temperature |
-15 to 70 degC (non-freezing) |
| Maximum Ambient Humidity |
80% RH maximum (non-condensing) |
| Operating Elevation |
1000m or less above sea level |
| Vibration Resistance |
X: 24.5 m/s2, Y: 49 m/s2 |
| Motor Weight |
18.0 kg |
| Shipping Weight (Calculated) |
19.0 kg |
Connections and Interfaces
| Terminal / Wire Identification |
Function / Assignment |
| U |
Motor Phase U (Power Feed) |
| V |
Motor Phase V (Power Feed) |
| W |
Motor Phase W (Power Feed) |
| PE (Green/Yellow) |
Protective Earth / Frame Ground |
| B1 / B2 |
Electromagnetic Holding Brake (24VDC, non-polarized) |
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
CRITICAL WARNING: Prior to commencing installation or maintenance, ensure all primary 3-phase AC power sources to the servo amplifier are completely de-energized. Wait at least 15 minutes to allow internal DC bus capacitors to fully discharge. Verify zero-voltage state on the amplifier terminals with a certified multimeter before handling motor connection cables.
1
Mechanical Alignment: Securely mount the motor to a rigid machine frame. Ensure parallel and angular shaft alignment to the driven load is within 0.03mm to prevent radial load stress on the bearings.
2
Power & Brake Cabling: Connect the U, V, W, and PE terminals to the servo amplifier motor outputs. Route the B1/B2 brake lines directly to the external 24VDC holding circuit.
3
Encoder Feedback Connection: Insert the high-resolution feedback cable plug into the motor encoder connector, ensuring the retaining collar is locked to maintain environmental sealing.