FANUC A20B-2901-0763 Memory and Serial Spindle Module, 256 KB SRAM, 128 KB FROM
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FANUC A20B-2901-0763 Memory and Serial Spindle PCB, 256 KB SRAM, 128 KB FROM
| Brand | FANUC |
|---|---|
| Model | A20B-2901-0763 |
| Handling Time | Within 1–2 working days |
| Shipping Method | DHL / UPS / FedEx |
| Estimated Delivery Time (via DHL) | Asia: 1–3 business days Europe: 2–4 business days North America: 2–4 business days South America: 3–6 business days Middle East & Africa: 3–6 business days Oceania: 2–5 business days |
| Warranty | New / Refurbished: 1 year Used (90% new): 3 months |
| Category | Memory and Serial Spindle PCB |
| Parameter Description | 256 KB SRAM; 128 KB FROM; serial spindle control |
| Service | Test video will be sent before delivery |
| Packing | Cartons |
Manufacturer-Confirmed Configuration
FANUC maintenance manual B-62705EN/03 identifies A20B-2901-0763 as a memory and spindle module with 256 KB SRAM, 128 KB FROM and serial spindle control. It is a combined CNC memory and spindle-control module, not a complete spindle amplifier or a general-purpose memory board.
The manual documents this specification within the Series 21/210 Model B hardware configuration. The exact drawing number is essential because related A20B-2901-076x modules use different memory capacities and spindle-control types.
Replacement and Data Protection
Back up all recoverable CNC and PMC data before removal. FANUC states that replacing the memory and spindle module can erase the ladder program and NC data; these must be restored afterward. Installation should be completed by qualified CNC personnel with power isolated and electrostatic-discharge precautions in place.
Compatibility Check Before Ordering
- Match A20B-2901-0763 and every revision shown on the original label.
- Compare the host main board, connectors and original Series 21/210-B configuration.
- Confirm 256 KB SRAM, 128 KB FROM and serial spindle control.
- Prepare backups of NC data and the PMC ladder before replacement.
Related FANUC CNC Components
Browse related FANUC printed circuit boards and control modules or FANUC CNC control parts. Related models are not interchangeable unless the complete FANUC specification matches.
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