The FANUC A20B-2002-0642 is a BETA SVU control board used in compatible FANUC servo amplifier units.

It is commonly identified as an FSSB interface command board, BETA servo control PCB, or servo amplifier command card. The board supports command processing and FSSB communication within the associated servo amplifier assembly.

Market references associate the A20B-2002-0642 with selected FANUC A06B-6093-H11x BETA Servo Amplifier Units. One specific reference lists it as an internal control board used in the A06B-6093-H114 SVU-80 amplifier, together with the A16B-3200-0291 wiring board.

The A20B-2002-0642 is suitable for replacement when a confirmed control-board fault causes servo amplifier startup problems, FSSB communication errors, abnormal servo response, or unstable drive operation.

Because A06B-6093 amplifiers are available in different output ratings and configurations, compatibility should be confirmed using the complete amplifier model and PCB revision before ordering.

• Servo-control and communication functions tested before shipment
  
• In stock and available for prompt dispatch
  
• Worldwide DHL, UPS, and FedEx shipping

Product Details

• Brand: FANUC
• Part Number: A20B-2002-0642
• Alternative Format: A20B20020642
• Type: BETA SVU Control Board / Servo Command PCB
• Interface: FSSB
• Product Series: A20B-2002
• Referenced Amplifier Family: FANUC A06B-6093-H11x
• Referenced Amplifier Type: BETA Servo Amplifier Unit
• Application: FANUC CNC Servo Drive Systems
• Function: Servo command processing and FSSB interface communication
• Category: FANUC Servo Amplifier PCB / Drive Control Board

Compatibility Note

The A20B-2002-0642 is associated with selected A06B-6093-H11x BETA servo amplifier units, but it should not be selected solely by appearance or product-series number.

Before ordering, please verify:

• Complete servo amplifier model number
• Full PCB number and revision
• Original connector and component layout
• FSSB fiber-optic interface requirement
• Amplifier output rating and hardware configuration
• Whether the PCB or complete servo amplifier is required

Board revisions such as A20B-2002-0642/04C may appear on individual units, so the complete identification label should be compared whenever possible.

Common Use Cases

• FANUC BETA SVU control-board replacement
• A06B-6093 servo amplifier maintenance
• FSSB communication fault troubleshooting
• Repair of servo amplifier startup or control faults
• Replacement of a damaged command PCB
• Restoration of legacy FANUC BETA drive equipment
• Preparation of a tested spare board for CNC maintenance

Sales & Support

Each A20B-2002-0642 servo control board is carefully inspected and tested under applicable conditions before delivery.

Worldwide delivery is available through DHL, UPS, FedEx, and other express carriers. REACO CNC provides PCB repair service, warranty coverage, testing-video support, and technical assistance for FANUC servo amplifier boards and CNC drive components.