Fanuc ai Servo Amplifier 400VAC-input A06B-6127-H205

🔧 A06B-6127-H205 – Description

The part A06B-6127-H205 is a high-power servo amplifier module from FANUC, designed for CNC machines and industrial automation systems.

📌 Official Specification

• Type: Servo Amplifier Module
• Series: A06B-6127 (αi series)
• Model Name: AiSV 20/20 HV
• Axes: Dual-axis (controls 2 servo motors)
• Voltage Class: High voltage (~400V AC)
• Rated Power: ~3.4 kW

👉 Official description:

ALPHA i SERVO MODULE AiSV 20/20HV

⚙️ Main Function

This unit is a servo drive (amplifier) that:

• ⚡ Converts incoming AC power into controlled output for motors
• 🎯 Controls position, speed, and torque of CNC axes
• 🔄 Drives two axes simultaneously (e.g., X & Y or X & Z)
• 🔗 Communicates with CNC via FANUC FSSB (serial servo bus)

👉 Simple explanation:

It is the “brain + power unit” that runs CNC machine axes.

🧩 Key Technical Details

• Output current: ~5.6A per axis
• Max output voltage: ~480V
• Cooling: Forced air
• Mounting: Electrical cabinet (panel mount)
• Compatible with: FANUC αi servo motors

🏭 Where It Is Used

• CNC machining centers
• CNC lathes
• Robotics & automation systems

Works with FANUC controls like:

• 0i / 16i / 18i / 21i series

🔍 Internal Boards (Important for You)

Inside this amplifier, you will find:

• A16B-2203-0810 ~ 0815 series boards (power PCB you asked earlier)
• Control PCB
• IGBT power modules

👉 So your earlier parts (0810–0815) are internal boards of this amplifier.

🔁 H202 vs H205 (Important Difference)

👉 H205 = double capacity of H202, used for larger motors or heavier loads.

🛠️ Common Fault Symptoms

If faulty, you may see:

• SV alarms (servo errors)
• Axis not moving
• Amplifier trip / overload
• Overcurrent or overheating

✅ Simple Summary

A06B-6127-H205 = FANUC αi dual-axis high-power servo amplifier (AiSV 20/20 HV)
👉 Controls two CNC axes with higher load capacity than H202