Description
FANUC A16B-2203-0631 PCB / Converter Board (αi Series)
The A16B-2203-0631 from FANUC is an internal converter PCB / power driver board used in CNC drive systems, particularly within αi (Alpha i) servo converters and power supply modules. It is a critical component responsible for power conversion and control signal processing inside the drive system.
Detailed Product Description
The FANUC A16B-2203-0631 is a converter board PCB designed for integration within FANUC CNC power and servo systems. It plays a key role in converting incoming electrical power and managing communication between control electronics and power circuits.
This board is typically installed in servo converter modules (such as 6110 series systems) and ensures smooth energy transfer, stable voltage regulation, and accurate signal control for servo motor operation.
As an internal component, it supports overall CNC machine performance by maintaining consistent power delivery and enabling precise motion control across machine axes.
Key Features & Functions
Converter / Power Driver PCB
Acts as a converter board that manages electrical power flow and control signals within CNC drive systems.
Used in FANUC αi Servo Converters
Commonly integrated into 6110 series servo converter modules and CNC systems.
Stable Power Conversion
Ensures proper voltage regulation and power distribution to servo and spindle drives.
Supports Precision Motion Control
Enables accurate communication between CNC controller and servo systems.
Industrial-Grade Reliability
Designed for continuous-duty operation in demanding manufacturing environments.
Technical Overview (General)
- Model: A16B-2203-0631
- Type: Converter PCB / Power Driver Board
- Series: FANUC A16B-2203 PCB Series
- Function: Power conversion and signal control
- Installation: Inside servo converter / power supply module
- Compatibility: FANUC αi (Alpha i) CNC drive systems
- Configuration: Internal (non-standalone component)
Applications
- FANUC αi servo converter modules
- CNC machining centers
- Industrial automation systems
- Servo and spindle drive systems
- Repair and refurbishment of FANUC drive units
Important Notes
- The A16B-2203-0631 is not a standalone product—it is used inside larger drive modules.
- It is often supplied as refurbished or replacement PCB for repair purposes.
- Part of a family including A16B-2203-0630 / 0631 / 0632, which are similar converter boards used across CNC systems.

