FANUC A06B-6058 Series Digital AC Servo Amplifier

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2. Product Features

• Type: Digital AC servo amplifier (single-axis/dual-axis)

• Housing: Heavy-duty yellow metal enclosure, IP20 protection, durable for industrial environments

• Core Boards: Equipped with A20B series control boards (e.g., A20B-1003-0090) and power boards (e.g., A20B-1003-0081)

• Power Supply: Three-phase AC 200–230V, 50/60Hz

• Control Modes: Closed-loop control of position, velocity, and current; PWM-based current control

• Feedback: Compatible with FANUC pulse encoders for position and speed feedback

• Protection Functions: Overcurrent, overvoltage, undervoltage, overheating, overload, and regenerative discharge protection

• Cooling: Forced air cooling to ensure stable operation under heavy loads

• Weight: Approx. 4.0 kg (single-axis); approx. 8.0 kg (dual-axis)

• Status: Discontinued by FANUC; available as new old stock or refurbished units

• Temperature Range: Operating 0°C to +55°C; storage -20°C to +60°C

3. Application Scope

• Compatible Motors: FANUC 0S, 5S, 10S, 20S, 30S, 5T/2000, and 10T/2000 series AC servo motors

• Compatible CNC Systems: FANUC Series 0-B, 0-C, 6, 10, 11, 15, and other legacy systems

• Applicable Machines: CNC lathes, milling machines, machining centers, grinding machines, boring machines, and automation production lines

• Main Functions: Precise servo axis motion control, spindle drive (for specific models), and old machine tool retrofitting

4. Common Models

• A06B-6058-H004: Single-axis amplifier, with control board A20B-1003-0090 and power board A20B-1003-0140

• A06B-6058-H005: Single-axis amplifier, with control board A20B-1003-0090 and power board A20B-1003-0081

• A06B-6058-H006: Single-axis amplifier, designed for 20S/30S series motors

• A06B-6058-H229: Dual-axis amplifier (L/M axes), for 0S/5S series low-power motors

• A06B-6058-H230: Dual-axis amplifier, supports 5S/3000 series motors

5. Installation Instructions

1. Power Off: Perform all installation and wiring with all power disconnected to avoid electric shock or component damage.

2. Mounting: Install vertically on a rigid, vibration-free surface in the electrical cabinet; maintain 100mm clearance around the unit for ventilation.

3. Wiring: Connect three-phase AC power (L1/L2/L3) to the power terminal block; connect motor power cables (U/V/W) and encoder cables to the corresponding connectors.

4. Grounding: Ensure reliable grounding of the amplifier chassis and cable shields to reduce electromagnetic interference.

5. Communication: Connect fiber-optic cables between the amplifier and CNC system for high-speed digital communication.

6. Inspection: Verify all connections are secure and correct before powering on.

6. Wiring Requirements

• Power Cables: Use FANUC-certified power cables with sufficient current rating.

• Signal Cables: Use shielded encoder and control signal cables; route signal cables separately from high-power cables with a minimum 15mm spacing to reduce crosstalk.

• Grounding: Ground cable shields at both ends and connect the amplifier chassis to the system ground.

• Pin Assignment: Strictly follow FANUC’s official wiring diagram and pin assignment; do not alter wiring order.

• Cable Protection: Keep cables away from heat sources and avoid sharp bends to prevent damage.

7. Working Environment

• Operating Temperature: 0°C to +55°C

• Storage Temperature: -20°C to +60°C

• Relative Humidity: ≤80% (non-condensing)

• Vibration Resistance: Maximum 5G

• Altitude: Up to 1000 meters above sea level

• Environment: Avoid corrosive gases, oil mist, conductive dust, and excessive vibration.

8. Maintenance Instructions

• Periodic Inspection: Quarterly power-off inspection of connections, grounding, and ventilation; check for dust accumulation, loose terminals, or cable damage.

• Cleaning: Clean dust and oil from the amplifier surface and ventilation holes with a dry soft cloth; keep the unit clean and dry.

• Component Check: Regularly check capacitors, resistors, and circuit boards for aging, swelling, or discoloration; replace faulty components promptly.

• Fan Maintenance: Inspect cooling fan operation regularly; clean fan blades and replace worn fans.

• Prohibition of Unauthorized Disassembly: Do not disassemble the amplifier internal structure without professional guidance; internal damage will void performance and safety.

9. Safety Precautions

• Qualified Personnel: Installation, wiring, maintenance, and repair must be performed by qualified electrical and servo technicians.

• No Hot Plugging: Never plug or unplug cables (power, encoder, communication) with power on; signal transients may damage the amplifier, motor, or CNC system.

• Reliable Grounding: Ensure the entire system (amplifier, motor, CNC) is reliably grounded to minimize EMI and prevent electric shock.

• Overload Prevention: Do not exceed the amplifier’s rated load to avoid permanent damage.

• Environmental Safety: Keep the amplifier away from flammable materials and humid, high-temperature environments to ensure long-term safe operation.