Main Technical Specifications

• Series: α1 (Alpha 1/3000) compact AC servo motor

• Model Variants: A06B-0371-B075 (no brake), A06B-0371-B175 (with brake), etc.

• Rated Continuous Output Power: 0.3 kW

• Rated Continuous Torque: 1.0 Nm; Maximum Torque: 3.0 Nm

• Rated Speed: 3000 rpm; Maximum Speed: 3000 rpm

• Rated Voltage: Three-phase 90 V AC (200 Hz)

• Rated Current: 2.5 A; Peak Current: 5.5 A

• Feedback Encoder: Built-in incremental encoder (2500 ppr, αi64)

• Shaft: Tapered shaft (TPR) with keyway

• Brake Option: With/without 24 V DC holding brake

• Cooling: Natural convection (self-cooled)

• Protection Class: IP65 (standard); IP67 (sealed variants)

• Insulation Class: F (155 °C)

• Rotor Inertia: 0.00021 kg·m²

• Approximate Weight: 3.5 kg

Product Features

• Compact & Lightweight: 3.5 kg mass and small frame reduce installation space and mechanical load, ideal for tight layouts.

• High Torque Density: Delivers 1.0 Nm continuous torque at 3000 rpm, optimized for high-speed, light-to-medium load tasks.

• Tapered Shaft Design: Tapered shaft with keyway ensures secure, zero-backlash coupling for precise motion transmission.

• Optional Holding Brake: 24 V DC brake models maintain load position during power-off, preventing drift in vertical axes.

• High-Resolution Encoder: 2500 ppr incremental encoder provides accurate position/speed feedback for consistent ±1 pulse positioning.

• IP65/IP67 Protection: Sealed housing resists dust, coolant, and oil mist, ensuring reliability in harsh workshop environments.

• Low Inertia Rotor: Enables fast acceleration/deceleration (0–3000 rpm in <10 ms) and smooth low-speed operation.

• Wide Compatibility: Matches FANUC αiSV series 90V servo amplifiers and 0i‑C/D series CNC systems for plug-and-play integration.

Application Scope

• CNC Machine Tools: Small CNC lathes, milling machines, and vertical machining centers for feed axes (X/Y/Z).

• Industrial Robotics: Light-duty robot arms, SCARA robots, and gantry robots with compact joint requirements.

• Automation Equipment: Packaging machinery, material handling systems, and assembly lines needing precise positioning.

• Special Machinery: Laser markers, precision positioning stages, and automated testing equipment with limited space.

Installation Instructions

• Mount the motor on a rigid, flat base to avoid resonance and shaft misalignment.

• Keep the mounting flange clean, flat, and free of debris to ensure full contact.

• Align the tapered shaft with the load; use a dedicated tapered coupling to prevent slippage.

• Tighten flange bolts evenly to 2.8 Nm torque to avoid housing distortion.

• Reserve 50 mm clearance around the motor for ventilation, encoder/brake wiring, and maintenance.

• For brake models, ensure the brake is electrically connected and functional before applying load.

Wiring Requirements

• Perform all wiring with power disconnected to avoid electric shock.

• Use FANUC-approved power, encoder, brake, and ground cables (AWG18–20).

• Connect three-phase power (U, V, W), protective earth (PE), and 24 V DC brake terminals (if equipped) securely.

• Route encoder cables separately from power/brake cables (≥10 cm) to minimize EMI.

• Follow FANUC’s official wiring diagram for correct encoder polarity and brake operation.

• Torque all terminal screws to 1.2 Nm to prevent loose connections.

Working Environment

• Operating Temperature: 0 °C to +40 °C

• Storage Temperature: −20 °C to +60 °C (non-condensing)

• Humidity: ≤80% RH (non-condensing)

• Altitude: ≤1000 m (derate output 1% per 100 m above 1000 m)

• Atmosphere: Free of corrosive gases, explosive dust, or excessive oil mist

Maintenance Instructions

• Every 3 months: Disconnect power, clean dust/oil from housing and brake assembly with a dry cloth.

• Every 6 months: Check mounting bolts, coupling tightness, encoder connectors, and brake wiring for security.

• Every 12 months: Inspect bearings for abnormal noise/vibration; replace bearings if noise occurs.

• Monthly (brake models): Test brake holding torque and release function under no-load conditions.

• Quarterly: Use CNC diagnostic tools to verify encoder signal quality and position stability.

• Do not disassemble the motor, encoder, or brake privately; unauthorized disassembly voids the warranty.

Safety Precautions

• Only qualified personnel may install, wire, or maintain the motor and brake system.

• Disconnect all power (main and brake) before maintenance; wait 5 minutes for capacitors to discharge.

• Never touch the rotating shaft, live electrical components, or brake parts during operation.

• Ensure reliable grounding (≤4 Ω) to prevent electric shock and reduce EMI.

• Do not modify the motor’s internal structure, encoder configuration, or brake wiring arbitrarily.

• The holding brake is for static holding only; do not use it for dynamic braking or emergency stops.