1. General Information

• Part Number: A16B-1100-0300

• Manufacturer: FANUC

• Type: AC Servo Drive Control PCB (for 6058 series)

• Application: FANUC CNC systems (0, 10/11/12/15, 16 series), 6058 servo drive units, machine tool servo control

• Function: Servo drive control, current/position loop processing, CNC-servo signal interface, power module driving

• Board ID: A320-1100-T300

2. Key Specifications

• Power Supply: +5 V DC (±5%, 2.0 A typical), ±15 V DC (±10%)

• Signal Interfaces:

  • Analog: ±10 V (speed command)

  • Digital: TTL I/O, servo enable/alarm/reset

  • Encoder: Serial α/β encoder input

• Control Loop: Dual-loop (current + position) control

• PCB Layer: 4-layer high-density FR-4

• Power Consumption: ~18–22 W

• Weight: Approx 0.79 kg (1.74 lbs)

3. Mechanical & Environmental

• Dimensions (H×W×D): 220 × 160 × 35 mm

• Mounting: Vertical rack-mount inside 6058 servo unit

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

• Storage Temperature: −20 °C to +60 °C

• Humidity: 10%–95% RH, non-condensing

• Cooling: Forced air cooling (internal fan required)

4. Main Functions

1. AC Servo Drive Control: Core control for 6058 series AC servo amplifiers

2. Dual-Loop Processing: Executes current loop (fast response) and position loop (precision control)

3. CNC Interface: Converts CNC commands to drive signals; isolates noise via opto-couplers

4. Encoder Feedback Handling: Processes serial encoder data for position/speed monitoring

5. Power Module Drive: Outputs PWM signals to IGBT power modules

6. Onboard Diagnostics: LED indicators for power, alarm, and status

5. Compatibility

• Servo Drives: FANUC 6058 series AC servo amplifiers

• CNC Systems: 0, 10/11/12/15, 16 series

• Motors: α-series AC servo motors (0S/1S/2S/3S)

• Replacement: Interchangeable with A16B-1100-0300 (no revision suffix)

6. Common Alarms

• SV-01: Overcurrent (motor short, wiring fault, IGBT damage)

• SV-02: Overvoltage (regeneration failure, input surge)

• SV-03: Undervoltage (power supply fault, fuse blown)

• SV-04: Overheat (cooling fan failure, heatsink blockage)

• SV-05: Speed deviation (encoder fault, motor overload)

• SV-06: Encoder error (cable break, encoder damage)

7. Handling & Maintenance

• ESD Protection: Use anti-static wristband when handling PCB

• Visual Inspection: Check for burnt components, swollen capacitors, loose connectors

• Cleaning: Remove dust from PCB and connectors every 3–6 months

• Power Check: Verify +5 V and ±15 V stability before power-up

• Connector Care: Ensure pins are clean and oxidation-free

8. Safety Notes

• High Voltage: Power off drive and discharge DC bus capacitors (≥10 minutes) before service

• Qualified Personnel: Only trained technicians may perform installation/maintenance

• Genuine Parts: Use FANUC OEM replacements for reliability and safety