Description
🔧 FANUC A06B-6141-C015 – Full Description
The A06B-6141-C015 is a very high-power servo amplifier module from FANUC’s Alpha i (αiSV) series, designed for heavy-duty servo motors in CNC machines and industrial automation. It’s part of the mid-to-high range of the 6141 C-series, above C011 and below the largest models like C022.
📌 Basic Identification
- Part Number: A06B-6141-C015
- Type: Servo Amplifier / Servo Drive
- Series: A06B-6141 (αiSV series)
- Model Class: ~15 kW (approximate)
- Application: CNC axis control (X, Y, Z, or auxiliary axes)
⚙️ Function
This module provides:
- 🌀 Precise position, speed, and torque control
- ⚡ High-torque output for heavy axis loads
- 🔄 Smooth acceleration & deceleration
- 🎯 Closed-loop feedback via encoders
Essentially, it converts electrical power into high-power, precise axis motion for CNC systems.
⚡ Technical Overview
- Power Class: ~15 kW
- Input Supply: DC bus (~283–339V DC typical in FANUC αi systems)
- Output Voltage: Up to 200–240 VAC to motor
- Cooling: Forced air cooling (high-power fan)
- Communication: FANUC serial servo interface (FSSB)
⚡ Energy-efficient with regenerative braking for energy recovery.
🧩 Key Features
- ⚙️ High-power, compact design suitable for cabinet mounting
- 🔗 Fully compatible with FANUC CNC controllers
- 🎯 Stable under heavy axis loads
- 🔧 Supports repair, refurbishment, and exchange programs
🧩 Applications
Used in:
- Large CNC machining centers
- Gantry/portal-type machines
- Heavy-duty milling, boring, or turning axes
- Auxiliary high-load axes (rotary tables, heavy tooling)
Ideal for heavy-load axes requiring ~15 kW servo drive power.
🔧 Internal Construction
Components include:
- Power PCB (A16B-2203 series)
- Control PCB (A20B series)
- High-current IGBT modules
- Forced-air cooling with heat sinks
⚠️ Typically repaired as a complete module, not at PCB level.
🚨 Common Fault Symptoms
- Axis not moving
- SERVO / SV / ALM alarms
- Overcurrent or overload trips
- Axis stops under load
- Drive fault LED ON
📊 Position in FANUC Range (6141 C-Series)
| Model | Power |
|---|---|
| C002 | ~2.2 kW |
| C006 | ~5.5 kW |
| C011 | ~11 kW |
| C015 | ~15 kW |
| C022 | Higher power |
C015 = Very high-power module for heavy axes, mid-to-top range in 6141 C-series
🔄 Related Modules
- C011: High-power (~11 kW)
- C022: Ultra-high power (~22 kW)
Same αiSV platform; differences are in current capacity, cooling, and application range.
✅ Summary
A06B-6141-C015
➡️ FANUC Alpha i AiSV servo amplifier
➡️ Designed for ~15 kW servo motors
➡️ Used in heavy-load CNC axis applications
➡️ Compact, high-power, fully compatible with FANUC CNC systems

