Description
🔧 Fanuc A06B-6127-H255 Servo Amplifier – Description
The A06B‑6127‑H255 is a dual‑axis high‑voltage servo amplifier module from FANUC’s Alpha iSV (αi) series, used in CNC machines and automation for precision motion control.
📌 Official / Practical Description
- Type: Servo Amplifier / Servo Drive Module
- Series: A06B‑6127 (FANUC αiSV family)
- Model: AiSV‑20/20HVL
- Axes: 2 axes (dual channel)
- Voltage Class: High‑Voltage Logic (industrial AC servo drive)
- Application: Drives and controls two CNC servo motor axes with precision motion control.
👉 On industry suppliers and fan listings, this part is described as:
2 AXIS ALPHA i SERVO MODULE MDL AiSV‑20/20HVL, designed for reliable servo performance in a range of industrial applications.
⚙️ Main Function
This module acts as the power and motion control drive for two servo motors:
- ⚡ Converts incoming high‑voltage AC power into controlled servo output
- 🎯 Controls position, speed, and torque of two driven axes
- 🔁 Maintains synchronized motion between axes according to CNC instructions
- 🔌 Interfaces with the CNC controller (FANUC’s proprietary FSSB bus) for coordinated motion execution
In simple terms:
It’s a high‑power amplifier that governs how motors move on a CNC machine — usually the X and Y or X and Z axes.
🧩 Typical Use Cases
This module is used in:
- CNC machining centers
- CNC lathes and turning centers
- Industrial automation requiring precise two‑axis motion
- Robot and assembly systems where dual axis control is needed
It fits into the servo drive rack of the CNC electrical cabinet alongside other drives, power supplies, and control boards.
🔍 Notes on Power Suffix (HVL)
The “HVL” in the description refers to its high‑voltage logic class, meaning it’s designed for higher voltage industrial CNC systems (typically ~400 V AC) and robust drive capabilities.
🛠️ Practical Considerations
- Core Exchange Required: Many suppliers require you to return your old module for credit when buying a replacement.
- Repair Options: Not always offered — often sold as new or refurbished units.
- Compatibility: Must match your existing motor ratings, controller type, and cabinet wiring.
✅ Summary
A06B‑6127‑H255 is a 2‑axis high‑voltage FANUC servo amplifier (AiSV‑20/20HVL) used in CNC and automation systems to control precision motion across two axes — converting large AC power into fine motion output under CNC direction.