Description
📌 FANUC A20B-8101-0180 — Part Description
A20B‑8101‑0420/02B usefully shows how FANUC parts are listed — similarly, FANUC A20B-8101-0180 is a power supply module/PCB used in FANUC CNC control systems.
🧠 What It Is
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Part Number: A20B-8101-0180
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Manufacturer: FANUC
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Category: Power Supply Board (Power PCB)
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Function: This component is a power supply/board module (often referred to as a DC-DC converter / PSU board) that provides regulated power to the CNC controller’s electronics.
⚡ Purpose & Use
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Power Supply Function: Supplies the necessary DC voltages to the CNC controller mainboard and associated electronics. It’s typically a small power module that may bolt onto the main PCB or fit into a dedicated slot, ensuring stable power for logic circuits.
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Applicable Controllers: Commonly found in FANUC i-Series controls such as 16iB, 18iB, 21iB and older generations that use modular PSU designs. It’s also known to fit boards that support 0i-C / 0i-Mate / similar FANUC systems with modular PSU sections.
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Role in System: Ensures stable power delivery to the controller’s logic circuitry, aiding reliable operation and protecting delicate electronics from voltage fluctuations.
🔌 Key Characteristics
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Type: Power Supply PCB / DC-DC converter
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Use Case: CNC controller power regulation and distribution
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Typical Fit: Mounted on or near the main control PCB in rack/cabinet assembly
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Availability: Often supplied new, refurbished, or as a replacement with core exchange options from industrial parts suppliers.
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Repairability: Some suppliers offer testing and repair services, but many units are replaced entirely due to PSU board failures.