Description
A06B-6120-C045 is a part number from FANUC. While the exact “C045” suffix variant is less commonly listed online, it belongs to the same A06B-6120 series, whose function and description are well defined.
🔧 Description (A06B-6120-C045)
Type: Alpha i Series Power Supply / Servo Drive Module
Function:
A high-voltage power supply module used in CNC systems to provide regulated DC power to servo amplifiers and spindle drives.
⚙️ What it does
- Converts industrial AC input (typically 400–480V) into stable DC power
- Supplies power to:
- Servo amplifiers (axis drives)
- Spindle amplifiers
- Ensures stable machine operation, motion control, and protection
These modules are essential in CNC machines like:
- VMCs (Vertical Machining Centers)
- CNC lathes
- Automated production systems
🧩 Series details (A06B-6120 family)
- Part of FANUC Alpha i (αi) drive system
- Designed for integration with FANUC CNC controls (0i, 16i, 18i, 30i, etc.)
- Known as PSM (Power Supply Module) in FANUC terminology
- Provides high-voltage DC bus for servo/spindle system
⚡ Key characteristics
- High-voltage industrial power conversion
- Built for continuous heavy-duty operation
- Includes protection circuits and thermal management
- Interfaces with other FANUC drive modules via system bus
📌 Important note about “C045”
- The suffix (C045) indicates a specific configuration/version (region, interface, or revision)
- Functionally, it is equivalent in role to other variants like H045 (commonly documented)
✔️ Simple explanation
👉 It’s basically the main power unit inside a FANUC CNC drive system—without it, the servo and spindle amplifiers won’t run.

