1. General Information

• Model: A06B-6117-H304 (αiSV-20/20/40)

• Type: 3‑axis integrated servo amplifier (Alpha i series)

• Brand: FANUC

• Description: Compact, high‑performance 3‑axis drive for CNC machine tools, robots, and automation systems.

• Manual No.: B‑65282

• 2. Electrical Specifications

• • Input voltage: 3‑phase AC 200–240 V ±10% (DC link 283–339 V)

  • Input power: 9.5 kW (rated)

  • Output voltage: 0–240 V AC (3‑phase)

  • Continuous output current:

    • L/M axes: 6.5 A (RMS) each

    • N axis: 13 A (RMS)

  • Peak output current: 2× continuous (≤0.5 s)

  • Control method: Full digital vector control (HRV3)

  • Feedback: Incremental encoder / serial absolute encoder

  • Communication: FSSB (FANUC Serial Servo Bus)

  • Cooling: Forced air cooling (internal fan)

• 3. Environmental & Mechanical

• • Operating temperature: −10 °C ~ +55 °C

  • Storage temperature: −20 °C ~ +60 °C

  • Humidity: 5–95% RH, non‑condensing

  • Protection: IP20 (front face)

  • Dimensions (W×H×D): 90 × 243 × 228 mm

  • Weight: ≈ 3.5–3.8 kg

  • Mounting: Vertical installation in control cabinet

• 4. Features

• • 3‑axis integration: Saves cabinet space and wiring

  • High‑speed response: HRV3 control, 1 μs cycle time

  • High precision: Supports 1 μm positioning accuracy

  • Multiple protection: Overcurrent, overvoltage, undervoltage, overtemperature, overload, encoder failure

  • Easy maintenance: LED status indicators, fan replacement accessible

  • CE compliant: Meets EMC and safety standards

• 5. Installation

• • Disconnect power before installation.

  • Mount vertically on a rigid cabinet rail; allow ≥50 mm clearance top/bottom for airflow.

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

  • Connect motor power cables to U/V/W terminals for each axis.

  • Connect encoder cables to respective feedback connectors.

  • Connect FSSB communication cable to CNC.

  • Torque terminals to 1.2–1.5 N·m.

  • Verify fan operation after power‑on.

• 6. Maintenance & Troubleshooting

• • Routine maintenance:

    • Clean air filter every 1–3 months.

    • Check fan operation and replace if noisy or failed.

    • Inspect terminals and cables for tightness/damage.

  • Common alarms:

    • ALM 300: Overcurrent → Check motor short, wiring, or overload.

    • ALM 430: Overtemperature → Check cooling, ambient temp, or fan.

    • ALM 510: FSSB error → Check communication cable and CNC link.

• 7. Safety Precautions

• • Installation and servicing only by qualified electricians.

  • High voltage present even after power‑off; wait ≥10 minutes before touching terminals.

  • Do not block ventilation openings—risk of overheating.

  • Use only FANUC‑specified cables and connectors.