Description
Basic Description
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Manufacturer: FANUC
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Part Number: A06B-6117-H104
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Series: βi (Beta-i) Servo Amplifier
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Type: Single-axis servo amplifier module
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Power Supply: 200–230 V AC (typical CNC power input)
Main Function
The A06B-6117-H104 amplifier is used to control one servo motor axis in a CNC machine. It performs:
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Current control for the servo motor
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Speed control
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Position control from CNC commands
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Processing encoder feedback signals
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Communication with the CNC controller
Typical Machines
This amplifier is commonly installed in:
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CNC machining centers
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CNC lathes
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Industrial machines using FANUC βi servo systems
Internal Sections
Inside the module there are usually:
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IGBT power inverter module
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Control PCB boards
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Cooling heat sink
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Motor and encoder connectors
✅ Simple explanation:
A06B-6117-H104 = FANUC βi single-axis servo amplifier used to drive one servo motor in a CNC machine.


