Description
A16B-2203-0661 is a FANUC servo amplifier printed circuit board (PCB) used inside FANUC CNC servo drive modules.
Basic Description
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Manufacturer: FANUC
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Part Number: A16B-2203-0661
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Type: Servo amplifier control / wiring PCB
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Component Type: Printed circuit board (PCB) for servo drive
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Application: CNC machine servo systems
Where it is Used
This board is installed inside αi series single-axis servo amplifier modules, such as:
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SV80 servo amplifier
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A06B-6114-H105 / C105 units
Main Function
The A16B-2203-0661 PCB performs several important control tasks inside the servo amplifier:
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Interfaces between the CNC controller and servo power module
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Processes motor feedback signals (encoder/resolver)
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Sends control commands to the power stage (IGBT / drive circuits)
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Helps regulate current, speed, and position control loops
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Provides communication and alarm signals to the CNC system
Typical Installation
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Mounted inside the servo amplifier housing
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Not used as a standalone board
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Connected with ribbon cables and connectors to the amplifier power section and CNC control signals.
Typical Machines Using It
You usually see this board in:
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CNC machining centers
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CNC lathes
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Industrial machines using FANUC αi servo drives.
✅ In simple terms:
A16B-2203-0661 = internal control PCB for FANUC αi SV80 servo amplifier that manages servo motor control and communication with the CNC controller.