Fanuc ai Servo Amplifier Power PCB 400VAC-input A16B-2203-0810

🔧 A16B-2203-0810 – Description

The part A16B-2203-0810 is a PCB (Printed Circuit Board) used in FANUC servo amplifier systems, manufactured by FANUC.

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📌 Official Description:

• Type: PC Board / Drive Board
• Category: PLC / Machine Control PCB
• Application: Servo amplifier (αi series)
• Specific Use: Installed in αi servo module SVM2-20/20HVi
• Status: Discontinued by manufacturer

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⚙️ Function:

This board acts as a drive/control PCB inside the servo amplifier, responsible for:

• Managing servo drive circuitry
• Supporting motor control signals
• Handling internal power and signal distribution
• Assisting communication between CNC and servo unit

👉 In simple terms:

It is a critical internal board that helps control servo motor movement in a FANUC CNC system.

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🧩 Where It Is Used:

• FANUC αi series servo amplifiers
• CNC machines like:
  • Turning centers
  • Machining centers
• Specifically tied to SVM2 amplifier modules

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🔍 Key Notes:

• Not a standalone unit — works inside servo amplifier
• Part of A16B-2203 series (various boards like power supply, controller PCB, etc.)
• Different suffixes (0810, 0815, etc.) = revision or variant

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🛠️ When It Fails:

Common symptoms include:

• Servo alarm / drive fault
• Axis not moving
• Amplifier not powering correctly