Description
A06B-6120-C018 – Detailed Description
The part number A06B-6120-C018 is a Power Supply Module (PSM) from the αi (Alpha i) drive system by FANUC, used in CNC machines.
🔧 What it is
- Type: αi Series Power Supply Module
- Class: aiPS-18 (18-class power unit)
- Role: Main DC power source for the drive system
⚙️ Core Function
This module:
- Takes 3-phase AC input (400–480V)
- Converts it into a high-voltage DC bus (~600V DC)
- Supplies power to:
- Servo amplifiers (axis drives)
- Spindle amplifiers
It is essentially the heart of the drive system—all motion depends on it.
📊 Typical Technical Characteristics
(based on 018 class modules)
- Power rating: ~18–21 kW
- Input current: ~35–40 A
- Built-in:
- Regenerative braking control
- Protection circuits (overvoltage, overcurrent, thermal)
🏭 Where it’s used
- CNC machining centers
- CNC lathes
- Multi-axis automated machines
- Industrial robotics systems
🔍 About “C018”
- 018 → Indicates power capacity (18-class module)
- C → Variant/revision code (often interchangeable with H018 in many setups, but always verify before replacement)
⚠️ Common Maintenance Notes
- Frequently associated with alarms like:
- DC bus overvoltage
- Input power faults
- Regeneration issues
- Should be checked along with:
- Incoming 3-phase supply
- External braking resistor (if used)
- Connected servo/spindle loads
🧠 In Simple Terms
The A06B-6120-C018 is the main power unit that energizes the entire CNC drive system. If this module fails, the machine will not power up or run.