A20B-8002-0632 Fanuc PCB Board A20B80020632 A2OB-8OO2-O632

A20B-8002-0632 | FANUC A20B-8002 Series PCB Board — CNC and Drive Systems / Industrial Automation / Japan Manufactured

A20B-8002 — Control PCB Series in Context

The A20B-8002 series sits within FANUC's A20B-800x board family — a group spanning multiple generations of CNC main control boards and drive interface PCBs:

A20B-8001 series: Preceding generation CNC control boards A20B-8002 series: Drive and control interface PCBs for the corresponding CNC generation A20B-8100 series: i-series era main boards (16i/18i/21i/30i and their power supplies) A20B-8101 series: FS30i power supplies and 30i main boards (including A20B-8101-0010 described in this batch)

A20B-8200 series: 0i-D era main boards

The A20B-8002 series occupies a distinct functional role — PCBs for drive system hardware and CNC interface functions from a specific FANUC hardware generation period. The 063x position within the series places A20B-8002-0632 in the upper range of this series, consistent with drive-related control or interface board applications.

Key Product Information

A20B-8002 PCBs in the Drive and CNC Interface Layer

The A20B-8002 series covers boards that operate at the interface between FANUC CNC controllers and the drive hardware they command. These boards provide:

Servo and spindle interface functions: Managing the communication between the CNC's motion controller and the servo/spindle amplifier hardware — translating CNC axis commands into the signals the drives consume.

Control logic hardware: Processing functions specific to the drive-CNC interface — alarm monitoring, feedback signal conditioning, and communication protocol handling.

Power conditioning: Some A20B-8002 boards provide power conversion or distribution for specific hardware assemblies.

The A20B-8002-0632 serves its defined function in this domain — confirmed from its installation within the specific FANUC hardware it supports.

Application Scenarios

Drive or CNC interface board fault: A FANUC CNC or drive system develops a fault traceable to the A20B-8002-0632 board. The board is identified from its label. Replacement restores normal operation.

System maintenance: A facility maintains an A20B-8002-0632 spare for the specific FANUC system it operates — ensuring fast response to any board-level failure.

FAQ

Q1: How do I confirm A20B-8002-0632 is the correct board for my FANUC system?

Read the part number from the installed board label. If it reads A20B-8002-0632, this is the confirmed replacement. 

Q2: Does A20B-8002-0632 contain stored CNC data?

Most interface and drive-related PCBs in the A20B-8002 series hold no stored CNC parameters — these reside in SRAM modules on the main board. Confirm from the specific board's functional documentation whether any configuration data is stored on A20B-8002-0632 itself.

Q3: What ESD precautions are needed when handling A20B-8002-0632?

Handle with a grounded anti-static wrist strap on an ESD-safe surface. Store in anti-static packaging. Power down the CNC or drive system completely and observe the applicable discharge procedure (including DC bus discharge for drive systems) before handling boards.

Q4: Is A20B-8002-0632 repairable?

Most A20B-8002 series boards are serviceable by specialist FANUC repair providers. Whether A20B-8002-0632 specifically is on a specialist's repair programme depends on failure mode analysis and component availability for this board.