Description
🔌 A20B‑2003‑0150/05A Fanuc — FANUC Backplane PCB (2-Slot)
Description:
The FANUC A20B-2003-0150 is a backplane printed circuit board (PCB) used in certain FANUC CNC control systems. It acts as a backplane connector board that provides slots for other control modules and enables electrical and data connections between them. It’s a critical part of the internal structure of the CNC controller that links key components such as the CPU, I/O, and other interface boards.
🧱 Key Details
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Part Number: A20B-2003-0150 (sometimes referenced with suffix /05A)
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Function: 2-slot backplane PCB — provides physical and electrical connections for multiple boards in a FANUC controller system.
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System Use: Commonly used in FANUC i-series CNC controls, particularly older or standalone models where boards plug into this backplane.
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Role: Serves as a backbone board that other modules plug into, ensuring that signals, power, and data are routed correctly within the controller housing.
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Structure: Typically configured with two slots for expansion modules or interface boards.
🛠️ Typical Context & Application
This part is generally found inside the CNC controller cabinet of industrial machine tools such as milling machines, lathes, and machining centers that use FANUC control electronics. It doesn’t perform motion control itself but provides the necessary connectivity framework for control boards and modules that do.