General Information

Model Identification

• Part Number: A06B-6122-H045 (common variants: #H550, #H553, #H570)

• Model: SPM‑45HVi (αi SP‑45HV)

• Series: Alpha i (αi)

• Type: High‑voltage spindle amplifier (400V AC)

• Manufacturer: FANUC

• Application: CNC spindle motor drive for medium‑to‑heavy‑duty machining.

Electrical Specifications

DC Bus Input (from PSM)

• Voltage: 565–679V DC

• Rated Input Power: 50kW

• Control Power: External 24V DC ±10% (for logic, FSSB communication, and fan).

AC Output (to Spindle Motor)

• Rated Output Voltage: 480V AC (3‑phase)

• Rated Output Current: 100A

• Output Frequency: Up to 400Hz (motor‑dependent)

• Control Method: Full‑digital vector control (speed, position, torque modes).

Regenerative Capability

• Supports regenerative braking (energy fed back to DC bus); works with αi PSM’s regenerative circuit.

Mechanical and Environmental Parameters

• Construction: Metal housing with yellow front panel; vertical cabinet mounting.

• Dimensions (W×H×D): Approximately 150mm × 350mm × 250mm

• Weight: Approximately 12kg (26.5lbs)

• Cooling: Built‑in replaceable axial fan + high‑efficiency heat sink.

• Operating Temperature: 0°C to +55°C

• Storage Temperature: ‑20°C to +70°C

• Humidity: 5%–95% RH (non‑condensing)

• Vibration: 0.5g (10–500Hz)

• Protection Class: IP20 (for cabinet installation).

Compatibility

• Spindle Motors: FANUC αi series high‑voltage spindle motors (e.g., αi45).

• Power Supply: αi PSM series (400V‑class, e.g., A06B‑6120‑H075).

• CNC Systems: FANUC 30i/31i/32i‑B, 0i‑MF/TF (400V option).

• Communication: FSSB fiber optic bus (100Mbps, daisy‑chain capable).

• Interface: Type B (complex) interface for spindle orientation, rigid tapping, and multi‑stage speed control.

Protection and Alarm Functions

• Overcurrent (AL‑01): Main circuit overload or short circuit.

• DC Bus Undervoltage (AL‑04) / Overvoltage (AL‑07).

• Heatsink Overheat (AL‑03)

• Fan Abnormal (AL‑02)

• Input Phase Loss

• Regenerative Overload

• Front‑panel 7‑segment LED display shows power status, FSSB link, and alarm codes in real time.

Installation Guidelines

• De‑energize the entire system and perform lockout/tagout before installation.

• Mount vertically on a cabinet plate; ensure adequate ventilation space above and below.

• Connect DC bus terminals to αi PSM power supply; ensure reliable protective grounding.

• Wire 24V control power and FSSB fiber cables per FANUC standard pinouts.

• Verify all connections for tightness and correctness before restoring power; clear existing alarms before operation.

Safety Notice

• High voltage present inside; wait ≥10 minutes after power‑off before opening the cover.

• Installation, wiring, and maintenance must be performed by qualified professional electricians.

• Use only genuine FANUC cables and connectors to avoid equipment damage and safety hazards.

• Maintain unobstructed airflow to prevent overheating; clean fan and heat sink dust regularly, replace faulty cooling components promptly.

Key Features

• 50kW high power output for medium‑to‑heavy‑duty spindle applications.

• Full‑digital vector control ensures precise speed, position, and torque regulation.

• Compact vertical design saves cabinet installation space.

• FSSB fiber optic communication provides high‑speed, noise‑immune data transmission.

• Comprehensive protection functions reduce unplanned downtime and enhance system reliability.