🔧 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
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Type: Servo Amplifier Module
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Series: A06B-6127 (αi series)
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Model Name: AiSV 20/20 HV
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Axes: Dual-axis (controls 2 servo motors)
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Voltage Class: High voltage (~400V AC)
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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:
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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)
| Model |
Capacity |
Description |
| H202 |
10/10 |
Lower power dual-axis |
| H205 |
20/20 |
Higher power dual-axis |
👉 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
