1. General Information

• Model: ZA81L-0001-0083#3C (standard: A81L-0001-0083#3C)

• Type: 3-phase AC line reactor

• Brand: FANUC

• Function: Suppress harmonics, voltage spikes & surges; protect servo/spindle amplifiers; improve power factor

• Applicable Systems: FANUC αi/βi servo amplifiers, PSMR/PSMRi power supplies, Bi SVM units

• Status: OEM discontinued; available as new surplus or refurbished

2. Electrical Ratings

• Rated Voltage: AC 253/264 V (200V class systems)

• Rated Current: 24 A (continuous)

• Rated Inductance: 0.15 mH

• Phase: 3-phase

• Frequency: 50/60 Hz

• Insulation Class: H (180 °C)

• Temperature Rise: ≤80 K (at full load)

• Inductance Tolerance: ±5%; variation ±20%

3. Mechanical & Environmental

• Dimensions (L×W×H): Approx. 220 × 110 × 80 mm

• Weight: Approx. 4.5 kg

• Mounting: Panel mount (4 × M5 holes)

• Ambient Temp: -10 °C ~ +40 °C (operation)

• Storage Temp: -20 °C ~ +60 °C

• Protection: IP20 (enclosed)

• Certifications: CE, RoHS compliant

4. Features

• High Noise Immunity: Reduces harmonic distortion & EMI/RFI

• Compact & Rugged: Industrial-grade construction for machine tool environments

• Thermal Stability: H-class insulation ensures long life under heavy load

• Easy Installation: Pre-wired terminals; direct connection to FANUC power terminals

• Long Service Life: Designed for 24/7 operation in CNC & automation

5. Compatibility

• Controllers: FANUC 0i, 16i, 18i, 21i, 30i/31i/32i series

• Amplifiers: αi-B, αi-C, βi series servo amplifiers

• Power Supplies: PSMR-15i, PSMR-30i, PSMR-55i

• Applications: CNC machine tools, machining centers, robots, high-speed automation

6. Installation Instructions

1. Mounting: Install vertically on a clean, flat metal panel; allow ≥50 mm clearance around all sides for cooling.

2. Wiring:

   • Connect 3-phase input (L1/L2/L3) to reactor terminals.

   • Connect reactor output to amplifier power terminals.

   • Torque terminals to 1.2–1.5 N·m.

3. Grounding: Connect reactor chassis to system ground (≤0.1 Ω).

4. Routing: Separate from high-frequency cables; avoid sharp bends and vibration.

5. Testing:

   • Verify no short circuits with multimeter before power-on.

   • Check for abnormal noise or overheating during operation.

7. Maintenance & Troubleshooting

• Maintenance:

  • Inspect terminals & wiring every 6 months; retorque if needed.

  • Clean dust from surface with dry cloth; do not use solvents.

• Common Issues:

  • Overheating: Check for loose connections, overloading, or blocked ventilation.

  • Audible Hum: Normal under load; excessive hum = loose core or winding fault.

  • Noisy Power: Confirm reactor is correctly sized and installed; check for parallel resonance.

8. Safety Precautions

• Disconnect all power before installation or service.

• Do not touch live terminals; high voltage present during operation.

• Keep away from flammable materials; surface may reach >100 °C.

• Only qualified personnel should install or service this component.