Description
A16B-2203-0875 is a servo amplifier wiring PCB manufactured by FANUC and used inside αi series CNC servo amplifier modules.
Basic Description
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Manufacturer: FANUC
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Part Number: A16B-2203-0875
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Type: Servo amplifier wiring / interface PCB
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Application: Installed inside αi SV360 servo amplifier units used in CNC machines.
Where It Is Used
This board is used in high-power servo amplifiers such as:
| Servo Amplifier Model | Amplifier Order No. | Wiring Board |
|---|---|---|
| αi SV360 | A06B-6114-H109 | A16B-2203-0875 |
These amplifiers drive large servo motors in CNC machines.
Main Functions
The A16B-2203-0875 PCB performs internal amplifier signal functions:
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Connects CNC controller signals to the servo amplifier
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Distributes control and feedback signals
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Interfaces encoder feedback from the servo motor
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Sends commands to the power stage (IGBT drive section)
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Supports current, speed, and position control loops
Typical Machines
This board is typically found in:
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CNC machining centers
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CNC heavy-duty milling machines
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Industrial systems using FANUC αi servo drives
✅ Simple explanation:
A16B-2203-0875 = wiring/control PCB used in FANUC αi SV360 servo amplifier to manage signals between the CNC controller and the servo drive power section.
If you want, I can also show you a quick table of all related boards (0625, 0661, 0662, 0875) and which FANUC servo amplifier each one belongs to. That helps a lot when repairing drives. 🔧

