FANUC AC Servo Motor

Model: A06B-0128-B675#7008

αi A6/3000 Series, Medium‑Inertia, 1.4kW, IP65, With Brake

2. Technical Specifications

2.1 Electrical & Performance

• Rated Output Power: 1.4 kW

• Rated Speed: 3000 rpm

• Rated Voltage: 114 VAC (3‑phase)

• Rated Current: 7.5 A

• Rated Frequency: 200 Hz

• Continuous Torque: 4.5 Nm

• Stall Torque: 6 Nm

• Stall Current: 10 A

• Rotor Inertia: Medium

• Encoder: αA64 absolute encoder (65,536 ppr, high‑resolution)

• Shaft: Straight keyed shaft, 19 mm diameter

• Brake: With 2 Nm power‑off holding brake (24 VDC)

• Insulation Class: F (155°C)

• Cooling: Natural air cooling

• Protection Grade: IP65

• Ambient Temperature (Operating): 0°C to +55°C

• Ambient Temperature (Storage): -20°C to +70°C

• Relative Humidity: 10%–90%, non‑condensing

• Vibration Resistance: Up to 5G

• Weight: Approx. 13.6 kg (30.0 lbs)

3. Mechanical Dimensions & Mounting

3.1 Shaft & Flange

• Flange: Standard A6 flange (110 mm × 110 mm)

• Shaft Diameter: 19 mm

• Keyway: 6 mm × 6 mm × 25 mm (standard)

• Mounting: Flange‑mounted (4 × M8 bolts, 90 mm pitch circle)

3.2 Cable Connections

• Power Connector: 4‑pin (U, V, W, PE)

• Encoder Connector: 20‑pin (αA64 encoder interface)

• Brake Connector: 2‑pin (24 VDC brake power)

• Cable Entry: Sealed glands for IP65 integrity

4. Product Features

1. Integrated Holding Brake

   2 Nm power‑off brake secures vertical axes and suspended loads during power loss or idle states, preventing dangerous freefall.
2. IP65 Protection

   Dust‑tight and protected against low‑pressure water jets; ideal for machine tools, washdown areas, and industrial floors.
3. Medium‑Inertia Rotor

   Balances dynamic response and load stability; suitable for applications with varying inertia or frequent speed changes.
4. High‑Resolution αA64 Encoder

   65,536 pulses per revolution (ppr) provides ultra‑precise position and speed feedback for closed‑loop control.
5. Low Cogging Torque

   Smooth, vibration‑free operation at low speeds; eliminates “crawling” or “jitter” in precision positioning.
6. Rigid & Durable Construction

   Cast aluminum housing, reinforced bearings, and sealed design ensure long service life under heavy loads and high vibration.
7. Standard Compatibility

   Directly compatible with FANUC αi‑B series servo amplifiers; plug‑and‑play replacement for existing A6/3000 motors.

5. Installation Instructions

5.1 Safety Precautions

• Disconnect all power before installation, wiring, or maintenance.

• Ensure the motor and amplifier are properly grounded to prevent electric shock.

• Do not operate the motor beyond its rated specifications.

• Brake safety: The holding brake is for static holding only. Do not use for dynamic stopping or overload protection.

5.2 Mechanical Installation

1. Inspection: Check motor housing, flange, shaft, and keyway for damage, deformation, or corrosion.

2. Mounting: Align the motor flange with the machine mounting surface. Tighten the four M8 mounting bolts evenly to 18–20 Nm to ensure flatness and concentricity.

3. Shaft Connection: Install a suitable coupling (e.g., bellows, rigid, or jaw coupling) onto the shaft. Maintain strict coaxiality (≤0.1 mm runout) to avoid vibration, noise, or premature bearing failure.

4. Shaft Protection: Do not apply heavy impact, radial loads, or axial pressure to the shaft.

5.3 Electrical Wiring

1. Cable Selection: Use FANUC‑specified power, encoder, and brake cables (or equivalent) with sufficient current rating and shielding.

2. Power Wiring: Connect U, V, W, and PE wires to the motor power connector. Torque terminals to 1.2–1.5 Nm.

3. Encoder Wiring: Connect the encoder cable to the 20‑pin encoder connector. Ensure proper pin assignment (refer to FANUC wiring diagram).

4. Brake Wiring: Connect the 24 VDC brake power wires to the brake connector. The brake engages when power is removed and releases when 24 VDC is applied.

5. Cable Routing: Avoid sharp bends (minimum bend radius = 8 × cable diameter), heavy compression, or crossing with high‑voltage cables. Secure cables with cable ties to prevent strain.

6. Grounding: Connect the motor frame PE terminal to the system ground bus.

5.4 Pre‑Operation Check

• Verify all mounting bolts and cable connections are tight.

• Check for correct encoder, power, and brake wiring.

• Perform servo amplifier initialization, homing, and a no‑load test run at low speed to confirm smooth operation and no abnormal noise or vibration.

• Test brake operation: Cut power to confirm the brake engages and holds the load.

6. Operation Precautions

1. Do Not Exceed Ratings

   Avoid operation above rated voltage, speed, or torque. Continuous overload will cause overheating, demagnetization, or motor burnout.
2. Brake Usage Rules

   The holding brake is designed for static holding only. Do not use it to stop moving loads or as a safety brake for dynamic applications. Release the brake before operating the motor.
3. Avoid Frequent Reversals

   Minimize prolonged rapid forward/reverse jogging, which increases overcurrent and thermal stress.
4. Environmental Limits

   Do not use in explosive, corrosive, or conductive dust environments. Maintain ambient temperature between 0°C and +55°C.
5. No Unauthorized Disassembly

   Do not open the motor housing or tamper with the encoder/rotor. This voids the warranty and may damage internal components.
6. Abnormal Conditions

   Stop operation and cut power immediately if abnormal noise, vibration, overheating (case temperature >80°C), or servo alarms occur.
7. IP65 Maintenance

   Periodically inspect cable glands, seals, and connectors for damage or wear to maintain IP65 integrity. Replace damaged seals immediately.

7. Maintenance & Storage

7.1 Regular Maintenance

• Cleaning: Wipe dust, oil, and debris from the motor surface. Keep cooling fins and ventilation areas unobstructed.

• Inspection (Monthly): Check mounting bolts, couplings, and cable terminals for looseness. Tighten as needed.

• Bearing Lubrication: Factory‑lubricated for life under normal operating conditions. Replace bearings if noise or vibration increases.

• Encoder & Brake Check: Verify encoder cable connections, seal integrity, and brake operation.

7.2 Storage

• Store in a dry, cool, clean indoor space with temperature 5°C–35°C and relative humidity ≤85% (non‑condensing).

• Keep in original packaging if possible. Avoid direct sunlight, moisture, and dust.

• Do not stack heavy objects on the motor.

• Shelf Life: 12 months in original sealed packaging under recommended storage conditions.

8. Quality & Warranty

• Compliance: Manufactured to FANUC’s strict industrial quality and safety standards.

• Testing: 100% factory‑tested for dynamic balance, electrical performance, brake function, and insulation resistance before shipment.

• Warranty: 12 months from date of delivery under normal use and proper installation. Warranty void if motor is disassembled, modified, or damaged by misuse.

9. Ordering Information

• Model Number: A06B-0128-B675#7008

• Description: AC Servo Motor, αi A6/3000, 1.4kW, 3000rpm, Medium Inertia, Straight Shaft, αA64 Encoder, With 2Nm Brake, IP65