Description
🧩 FANUC A20B‑8101‑0430 – Power Supply PCB / Backpanel Power Card
Description:
The FANUC A20B‑8101‑0430 is a power supply printed circuit board (PCB) used in certain FANUC CNC controller systems. It provides the main power supply function to the control electronics and often serves as a backpanel power/riser card in the control rack.
🔌 Key Features
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Part Number: A20B‑8101‑0430
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Name: Power Supply PCB (sometimes referred to as a “power supply card” or “backpanel PSU board”)
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Function: Supplies regulated power to the main controller boards and auxiliary electronics inside the CNC control cabinet. It may also act as a riser/backpanel card in the CNC rack structure.
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System Use: Commonly used in FANUC Series 0i‑C / Zero i‑C controllers and related FANUC CNC systems where this power card is required for board‑level power distribution.
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Core Exchange: Many vendors require a core exchange when ordering this board (return the old unit for credit).
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Availability: Often sold new, refurbished, or as surplus parts through industrial automation suppliers.
🛠️ Typical Application
This board is installed inside the controller electronics cabinet of CNC machine tools and provides the necessary power distribution for other controller PCBs (main CPU boards, servo modules, I/O boards). It’s essential for proper startup and stable operation of the control system.