1. General Information

• Part Number: A16B-2200-015

• Board ID: A320-2200-T156/03

• Manufacturer: FANUC

• Type: Conversation CPU PCB (Main Board, Base 0 Shared Resource)

• Application: FANUC 15/150F/15A CNC systems (15TF/15TTF controllers)

• Function: CNC main CPU control, conversational programming, PMC-N RAM integration, system logic & motion control management

• Status: Discontinued OEM part (remanufactured/used only)

2. Key Specifications

• Power Supply: +5 V DC (±5%, ~3.0 A), ±15 V DC (±10%)

• Processor: 16-bit CNC main CPU

• Memory: Onboard RAM + PMC-N RAM expansion support

• Interfaces:

  • CNC bus: Proprietary FANUC system bus

  • I/O: Opto-isolated digital I/O, serial communication

  • Panel: Connection for CRT/MDI conversational panel

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

• Power Consumption: ~25–30 W

• Weight: Approx 0.85 kg

3. Mechanical & Environmental

• Dimensions (H×W×D): 245 × 170 × 40 mm

• Mounting: Vertical slot-mount inside 15A CNC control unit

• Operating Temperature: 0 °C to +55 °C

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

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

• Cooling: Forced air cooling (CNC internal fan required)

4. Main Functions

1. CNC Main Control: Executes core CNC logic, motion planning, and axis coordination for 15A systems

2. Conversational Programming: Drives interactive, menu-based programming (no G-code expertise needed)

3. PMC Integration: Manages PMC-N (Programmable Machine Control) logic and RAM expansion

4. System Supervision: Monitors power, temperature, and system health; triggers alarms

5. Panel Interface: Connects to FANUC 15-series CRT/MDI panels for user input/display

5. Compatibility

• CNC Systems: FANUC 15, 150F, 15A (15TF/15TTF)

• Panels: 15-series CRT/MDI conversational panels

• Replacement: Interchangeable with A16B-2200-015 (no revision suffix; later revisions may be compatible)

6. Common Alarms

• ALM 01: CPU error (board fault, RAM failure)

• ALM 02: System RAM error (onboard/PMC-N RAM fault)

• ALM 03: Power supply fault (+5 V/±15 V out of range)

• ALM 04: Overheat (fan failure, blocked airflow)

• ALM 05: Panel communication error (cable/connector fault)

7. Handling & Maintenance

• ESD Protection: Mandatory anti-static wristband when handling

• Visual Inspection: Check for burnt components, swollen capacitors, cracked solder joints

• 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, straight, and oxidation-free

8. Safety Notes

• High Voltage: Power off CNC and discharge internal capacitors (≥10 minutes) before service

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

• Genuine/Refurbished Parts: Use FANUC OEM or certified remanufactured boards for reliability