Fanuc ai Servo Amplifier Control Card 200VAC-input A20B-2101-0355

A20B-2101-0355 is a Fanuc Corporation PCB (printed circuit board) used inside Fanuc CNC systems.

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🔧 A20B-2101-0355 – Description

• Type: Printed Circuit Board (PCB)
• Category: Control / interface board
• System: Fanuc CNC controller hardware
• Role: Internal electronic board for signal processing and system control

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⚙️ What it does

This board typically:

• Handles control signals and communication within the CNC system
• Interfaces between different modules (CPU, I/O, drives, etc.)
• Processes inputs/outputs from machine components
• Supports stable operation of the CNC controller

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🧩 Model breakdown

• A20B → Fanuc PCB/board product family
• 2101 → Board series/type
• 0355 → Specific version or configuration of the board

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🏭 Where it is used

• Fanuc CNC controllers (0 series, 16/18/21 series, etc.)
• Machine control cabinets
• Industrial automation systems

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🔁 Common board types in A20B series

Boards like this can be:

• CPU boards
• I/O interface boards
• Axis control boards
• Communication boards

👉 Exact function depends on machine configuration and placement.