1. General Information

2. Model & Identification

• Part Number：A06B-6120-H018

• Type：αi PSM-18HVi (Power Supply Module, αiPS 18HV)

• Series：Alpha i (αi)

• Manufacturer：FANUC Corporation

• Application：400–480V AC input, for high-power servo/spindle drives in CNC & automation.

3. Electrical Specifications

Input

• Voltage：3‑phase 400–480V AC, 50/60Hz.

• Rated Current：37A @ 400V.

• Input Power：18kW (max).

Output (DC Bus)

• Voltage：565–679V DC.

• Rated Power：21kW (continuous).

• Regeneration：Built‑in regenerative circuit; returns braking energy to AC line, no external resistor needed for most cases.

Control Power

• External 24V DC ±10% for control logic, FSSB communication, and fan.

4. Mechanical & Environmental

• Construction：Heavy‑duty metal casing, yellow front panel, vertical panel‑mount design.

• Dimensions：Approx. 90mm (W) × 380mm (H) × 272mm (D).

• Weight：Approx. 6.8kg.

• Cooling：Integrated axial fan (field‑replaceable) + 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).

5. Compatibility

• Servo Amplifiers：αi SVM series (400V class, e.g., A06B-6117‑H211).

• Spindle Amplifiers：αi SPM series (400V class).

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

• Communication：FSSB (FANUC Serial Servo Bus) fiber‑optic interface; supports daisy‑chain connection.

6. Protection & Diagnostics

• Overcurrent：Main circuit overcurrent/short‑circuit protection (AL‑01).

• Overvoltage/Undervoltage：DC bus monitoring (AL‑04 undervoltage, AL‑07 overvoltage).

• Overheat：Heat sink temperature monitoring (AL‑03).

• Fan Fault：Fan stop/speed anomaly detection (AL‑02).

• Phase Loss：Input phase loss protection (AL‑E).

• Regeneration Error：Regenerative overload (AL‑438).

• Status Indicators：Power, FSSB link, alarm LEDs on front panel.

7. Installation & Wiring

1. Power off the entire system and perform lockout/tagout to prevent electric shock.

2. Mount vertically on cabinet panel with four M5 screws; maintain 100mm clearance above and below for ventilation.

3. Connect 3‑phase AC input (L1/L2/L3) and ground PE terminal.

4. Connect DC bus output (DC+, DC‑) to servo/spindle amplifiers.

5. Connect 24V DC control power to CN1 connector.

6. Connect FSSB fiber cable to FSSB IN/OUT for CNC communication.

7. Verify all connections are secure before restoring power; check LED status and clear alarms.

8. Safety & Warnings

• Warning：High voltage present inside; wait at least 10 minutes after power‑off before opening the cover.

• Warning：Only qualified electrical personnel may perform installation, wiring, or maintenance.

• Caution：Use only FANUC‑specified cables and connectors to avoid damage or fire.

• Caution：Ensure proper ventilation to prevent overheating and premature failure.

• Maintenance：Clean fan and heat sink every 3–6 months; replace faulty fans promptly.

9. Features & Benefits

• High 21kW continuous DC power for demanding multi‑axis systems.

• Full regeneration reduces energy consumption and heat generation.

• Compact vertical design saves cabinet space.

• HRV‑compatible FSSB communication ensures stable high‑speed data transfer.

• Robust protection suite minimizes downtime in industrial environments.