Fanuc ai Servo Amplifier 400VAC-input A06B-6127-H206

🔧 A06B-6127-H206 – Description

The part A06B-6127-H206 is a high-capacity servo amplifier module from FANUC, designed for advanced CNC machines and industrial automation systems.

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📌 Official Description

• Type: Servo Amplifier Module
• Series: A06B-6127 (αi series)
• Model: AiSV 20/40 HV
• Axes: Dual-axis (controls 2 servo motors)
• Voltage: High voltage (~400V AC)
• System: FANUC αi servo system

👉 Official naming:

ALPHA i SERVO MODULE AiSV 20/40HV

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⚙️ Main Function

This amplifier is a high-power servo drive that:

• ⚡ Converts AC input into controlled output for motors
• 🎯 Controls position, speed, and torque
• 🔄 Drives two axes simultaneously
• 🔗 Communicates with CNC via FSSB (FANUC Serial Servo Bus)

👉 Simple explanation:

It is the powerful motion controller for CNC axes, handling heavier loads than H202 / H205 models.

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🔍 Key Difference (Important)

👉 H206 = higher capacity than H205, especially for machines where:

• One axis needs more power (e.g., Z-axis, heavy table, large spindle load)

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🧩 Internal Structure

Inside this amplifier:

• Power PCB (A16B-2203-0810 to 0815 series)
• Control board
• IGBT power modules

👉 So all the boards you asked earlier (0810–0815) are internal parts of this amplifier.

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🏭 Applications

Used in:

• CNC machining centers
• Heavy-duty CNC lathes
• Industrial automation systems

Compatible with:

• FANUC αi servo motors
• FANUC controls (0i, 16i, 18i, 21i, etc.)

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🛠️ Common Fault Symptoms

If this unit has issues, you may see:

• SV alarms (servo errors)
• Axis overload or imbalance
• One axis weaker than the other
• Amplifier trip / overcurrent

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✅ Simple Summary

A06B-6127-H206 = FANUC αi dual-axis servo amplifier (AiSV 20/40 HV)
👉 Designed for unequal axis loads (20/40) and heavier machining applications