Description
🔧 FANUC A06B-6141-H026 – Full Description
The A06B-6141-H026 is a very high-power spindle amplifier module from FANUC’s Alpha i (αiSP) series, designed to control large CNC spindle motors in heavy-duty machining applications.
📌 Basic Identification
- Part Number: A06B-6141-H026
- Type: Spindle Amplifier / Spindle Module
- Series: A06B-6141 (αiSP modular spindle drives)
- Model: AiSP-26 (SPM-26i)
- Interface: Type-1 spindle interface
⚙️ Function
This module works as the main drive unit for the spindle motor, providing:
- 🌀 Spindle speed (RPM) control
- ⚡ High torque output for heavy cutting loads
- 🔄 Smooth acceleration & deceleration
- 🎯 Closed-loop feedback control using encoder signals
👉 In simple terms:
It converts electrical input into high-power, controlled spindle rotation.
⚡ Technical Specifications
- Power Class: ~26 kW
- Input Voltage: Typically 200–240 VAC
- Output Current: Very high current capacity
- Cooling: Forced air cooling system
- Communication: FANUC serial spindle interface (FSSB)
🧩 Key Features
- ⚙️ Compact modular design (smaller than A06B-6111 series drives)
- 🔗 Fully compatible with FANUC CNC systems
- 🎯 Stable and precise spindle performance
- 🔧 Supports repair, refurbishment, and exchange programs
🧩 Applications
Used in:
- CNC machining centers
- Heavy-duty milling and boring machines
- Large CNC lathes
- Industrial applications requiring continuous high torque and power (~26 kW)
🔧 Internal Construction
Inside the module:
- Power PCB (A16B-2203 series)
- Control PCB (A20B-2100 / A20B-2101 series)
- IGBT modules for high-power switching
- Cooling system (fan + heat sink)
⚠️ Typically repaired as a complete unit, not individual boards in field service.
🚨 Common Fault Symptoms
If faulty, you may observe:
- Spindle not rotating
- SP / ALM spindle alarms
- Overcurrent or overload trips
- Sudden spindle stop under load
- Drive fault LED indication
📊 Position in FANUC Range (6141 Series)
| Model | Power |
|---|---|
| H002 | ~2.2 kW |
| H006 | ~5.5 kW |
| H011 | ~11 kW |
| H015 | ~15 kW |
| H022 | ~22 kW |
| H026 | ~26 kW |
👉 H026 = one of the highest power modules in 6141 compact series
🔄 Variants
Common suffix:
- A06B-6141-H026#H580
➡️ Indicates firmware/interface variations only.
✅ Summary
A06B-6141-H026
➡️ FANUC Alpha i AiSP-26 spindle amplifier module
➡️ Designed for ~26 kW spindle motors
➡️ Compact, high-power module for heavy-duty CNC applications