Description
🔧 FANUC A06B-6114-H303 – 3-Axis Alpha i Servo Amplifier
🧠 Model Description
A06B-6114-H303 is a FANUC Alpha i (αi) servo amplifier module designed for 3-axis (triple-axis) control. It is commonly identified as:
👉 SVM3-20/20/20i (3-axis servo module)
⚙️ Key Technical Details
- Type: AC Servo Amplifier
- Series: Alpha i (αi)
- Axes: 3 axes (X, Y, Z or equivalent)
- Model: SVM3-20/20/20i
- Input Voltage: 283–339 V DC
- Output Voltage: up to ~240 V AC
- Output Current: ~6.5 A per axis (L/M/N)
- Interface: FSSB (fiber optic communication)
⚙️ What It Does
This amplifier:
- Drives three servo motors simultaneously
- Controls:
- Position
- Speed
- Torque
- Synchronizes multi-axis motion
- Communicates with CNC via fiber optic (FSSB)
👉 Simple explanation:
One amplifier controls 3 CNC axes with medium power capacity.
🏭 Applications
- CNC machining centers
- CNC milling machines
- Compact multi-axis machines
- Robotics and automation systems
Commonly used with:
- FANUC 0i / 16i / 18i / 21i controllers
- αi servo motors (4i / 8i class typical)
🔍 Key Features
- ✔ Triple-axis integrated amplifier (space-saving)
- ✔ Medium power class (20/20/20 rating)
- ✔ High precision positioning
- ✔ Built-in protection & diagnostics
- ✔ Internal boards like:
- A16B-2203 series (logic PCB)
- A20B-2101 series (control PCB)
⚠️ Important Notes
- H303 = 3-axis (SVM3 type)
- “20/20/20” = equal current rating per axis (medium load)
- Requires:
- Matching servo motors
- Compatible power supply module (PSM)
- Typically repaired/refurbished instead of replaced
🧠 Simple Explanation
👉 A06B-6114-H303 is a 3-axis FANUC servo amplifier that controls three CNC machine axes with medium power, providing synchronized and precise motion control.