Description
📦 FANUC A06B-6127-C154 — Description
Part Number: A06B-6127-C154
Description: ALPHA i SERVO MODULE MDL AiSV-40HVL — a single-axis high-voltage servo amplifier (servo drive) used in CNC machines and industrial automation systems.
🔧 What It Is
The A06B-6127-C154 is part of FANUC’s A06B-6127 Alpha i (αiSV) series of servo amplifier modules.
It is the unit/configuration variant of A06B-6127-H154, which is officially specified as:
👉 “ALPHA i SERVO MODULE MDL AiSV-40HVL”
From FANUC documentation:
- H154 = Order model
- C154 = Unit (configuration) version of the same module
✔ So functionally:
👉 C154 = same base drive as H154 (AiSV-40HVL)
👉 Difference is typically internal configuration / PCB / wiring version, not performance.
⚙️ Function & Operation
- Receives motion commands from a FANUC CNC controller
- Converts them into controlled electrical output
- Drives a single servo motor axis with high precision for:
- Position
- Speed
- Torque
This enables accurate and synchronized motion control in industrial machinery.
📊 Technical Context (AiSV-40HVL Class)
- Model Class: AiSV-40HVL (high-voltage compact class)
- Voltage: ~400 V AC (industrial three-phase typical)
- Axis Control: Single-axis
- Communication: FANUC FSSB (fiber optic servo bus)
- Design: Compact, efficient servo amplifier with high reliability
🏭 Applications
Commonly used in:
- CNC machining centers (milling, turning)
- Industrial robots
- Automated production lines
- Precision motion control systems
Installed inside the machine electrical cabinet as part of the servo drive system.
📌 Simple Summary
👉 A06B-6127-C154 = FANUC Alpha i servo amplifier (AiSV-40HVL, single-axis)
👉 Medium-power, high-voltage servo drive for precise motion control
👉 Equivalent to A06B-6127-H154, with a different suffix (configuration/revision)

