Description
🔧 A06B-6127-H202 – Description
The part A06B-6127-H202 is a servo amplifier module manufactured by FANUC, used in CNC machines for controlling servo motors.
📌 Official Description
- Type: Servo Amplifier Module
- Series: A06B-6127 (αi series)
- Model: AiSV 10/10 HV
- Configuration: Dual-axis (2 servo motors)
- Voltage: High voltage (~400V AC)
- System: FANUC αi servo system
👉 Official naming:
ALPHA i SERVO MODULE AiSV 10/10 HV
⚙️ Main Function
This unit is the core drive system for CNC axes. It:
- ⚡ Converts incoming power into controlled output for servo motors
- 🎯 Controls position, speed, and torque of machine axes
- 🔄 Drives two axes simultaneously (dual channel)
- 🔗 Communicates with CNC via FANUC high-speed system (FSSB)
👉 Simple explanation:
It is the “motor controller” of your CNC machine, responsible for precise axis movement.
🧩 Internal Components
Inside this amplifier, you’ll find:
- Power board (e.g., A16B-2203-0815)
- Control PCB
- IGBT power modules
👉 Important:
- Internal boards like A16B-2203-0810–0815 series are not separate units—they are part of this amplifier
🏭 Where It Is Used
- CNC machining centers
- CNC lathes
- Automation systems
Compatible with:
- FANUC αi servo motors (ai2, ai4 series)
- Controls like:
- 0i series
- 16i / 18i / 21i
🔍 Key Technical Features
- Dual-axis servo control (10/10 capacity)
- High Voltage (HV) design
- HRV (High Response Vector) control → better accuracy
- Designed for high precision machining
🛠️ Common Issues
If faulty, you may see:
- SV (servo) alarms
- Axis not moving
- Amplifier trip / power fault
- Overcurrent / overvoltage errors
✅ Simple Summary
A06B-6127-H202 = FANUC αi dual-axis servo amplifier (AiSV 10/10 HV)
👉 Controls and powers two CNC machine axes with high precision.

