Fanuc A20B-2901-0981/05B Spindle Control Module Board

Serial spindle control and RS‑232 communication module (Spindle Serial LSI) used in Fanuc Series 16 and 18 Model B/C CNC controls for precise spindle speed and direction control. Technical Specifications: Part Number: A20B‑2901‑0981/05B Function: Serial spindle control (Spindle Serial LSI) with RS‑232 interface Compatible Systems: Fanuc Series 16B/C, 18B/C (Model B systems) Interface: Serial communication to spindle amplifier modules (e.g. Fanuc ALPHA series) + RS‑232 for diagnostics/control Module Type: Surface-mount PCB daughterboard installed in F16B slot on control rack Weight: Approximately 0.11 lbs (50 g) Condition: New, surplus or refurbished units available with typical 1–2 year vendor warranty Manufactured by: Fanuc, made in Japan Please review pictures carefully and let us know if you have any questions!