FANUC A06B-6120-H018 Power Supply Module (αi Series – PSM-18HVi)
The A06B-6120-H018 from FANUC is an αi series high-voltage power supply module (PSM-18HVi) used in CNC machines to generate and regulate the DC bus power required for servo and spindle drive systems.
Detailed Product Description (Website Ready)
The FANUC A06B-6120-H018 is a high-voltage CNC power supply module designed for the αi drive system, responsible for converting 3-phase AC input (400–480V) into a stable DC bus voltage (~565–679V DC). This DC power is then distributed to servo amplifiers and spindle drives for precise machine motion control.
As part of the PSM-18HVi series, this module is commonly used in small to medium CNC machines and industrial automation systems, where reliable and efficient power conversion is required for continuous production.
It ensures stable energy delivery across all connected axes, helping maintain machining accuracy, smooth spindle operation, and overall system reliability.
Key Features & Benefits
PSM-18HVi High-Voltage Power Module
Designed for efficient conversion of industrial AC power into regulated DC supply for CNC drives.
Stable DC Output for Servo Systems
Provides approximately 565–679V DC output, ensuring consistent performance for servo and spindle amplifiers.
Power Rating ~21 kW Class
Suitable for small to mid-range CNC machines and multi-axis systems.
3-Phase Industrial Input
Operates on 400–480V AC, 50/60 Hz supply, compatible with standard industrial power systems.
Compact & Efficient Design
Built for integration inside CNC control cabinets with forced-air cooling for thermal stability.
FANUC αi System Compatibility
Works seamlessly with FANUC servo and spindle amplifiers through shared DC bus architecture.
Technical Specifications (Typical)
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Model: A06B-6120-H018
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Series: FANUC αi (PSM-18HVi)
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Type: Power Supply Module
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Input Voltage: 400–480V AC (3-phase)
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Input Current: ~37A @ 400V
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Output Voltage: ~565–679V DC
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Power Rating: ~21 kW
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Frequency: 50/60 Hz
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Cooling: Forced air cooling
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Application: CNC servo & spindle power supply system
Applications
- CNC machining centers
- Milling and turning machines
- Industrial automation systems
- Servo and spindle drive systems
- Small to medium production lines
Important Notes
- This is a central power supply module, not a servo amplifier or controller.
- It works as part of a DC bus system feeding multiple drives.
- Commonly replaced via repair/exchange/refurbished units due to high-voltage operation and industrial wear.
