Description
📌 FANUC A20B‑2902‑0642 — 256K SRAM Module with Analog Spindle
Description:
The A20B‑2902‑0642 is a memory module (SRAM) used in FANUC CNC control systems. It features 256 KB of static RAM (SRAM) and includes support for an analog spindle interface. This module is part of the A20B‑2902 series of control PCBs for CNC system electronics.
Key Function & Features:
-
📦 Module Type: SRAM memory board — provides fast, static RAM for system operation and data buffering in the CNC controller.
-
🧠 Memory Size: 256 KB SRAM capacity — used for temporary storage of data needed by the CNC system during operation.
-
🔄 Analog Spindle Support: The board includes an analog spindle interface, indicating it works with spindle control or feedback circuits requiring analog signals.
-
⚙️ Series: Part of the A20B‑2902 family of FANUC control PCBs, which includes various modules such as SRAM, CRTC/display control, servo interface, and more.
Typical Use:
This SRAM module plugs into the controller electronics rack/backplane of compatible FANUC CNC systems to provide working memory for processes requiring fast access and to support spindle control functions. After installation, CNC parameters and programs usually need to be reloaded to the module so the controller can operate correctly.