Description
📌 FANUC A20B‑2902‑0644 — SRAM Module with Analog Spindle Support
Description:
The FANUC A20B‑2902‑0644 is a memory module (SRAM module) used in FANUC CNC control systems as part of the internal electronic control rack. It combines Static RAM (SRAM) for system data handling with support for an analog spindle interface, making it suitable for systems that use analog signals for spindle speed/feedback control.
Key Details:
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💾 Module Type: SRAM memory board — provides working memory for the CNC controller’s internal processes.
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🔄 Analog Spindle Support: Built‑in analog spindle interface — used for spindle control or feedback that operates with analog signals.
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🛠️ Product Family: Part of the A20B‑2902 series of FANUC control PCBs, which includes various memory, interface, servo, and control boards.
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📌 Use Case: Installed on a CNC system’s controller backplane to provide SRAM for parameters, program buffering, and run‑time data along with analog spindle handling capabilities.
Typical Notes:
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After installation, parameters and CNC programs must be reloaded to the module for the system to operate correctly (standard practice when replacing memory boards).
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Availability can vary, and many suppliers require contacting them for pricing and stock status.