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FANUC A20B-2001-0781 is a spindle control PCB for Alpha SPMC spindle amplifier modules. FANUC documents it for compatible A06B-6082-H206 SPMC-5.5 and A06B-6082-H211 SPMC-11 assemblies.
The board carries spindle-control circuitry and version-dependent ROM software. Confirm the host amplifier, power board, printed edition and software suffix before replacement.
A20B-2001-0781 Product Information
| Brand | FANUC |
| Model / MPN | A20B-2001-0781 |
| Series | FANUC Alpha SPMC spindle amplifier series |
| Product Type | Spindle control PCB / plug-in control board |
| SPMC-5.5 Host | A06B-6082-H206 |
| SPMC-5.5 Power Board | A16B-2202-0681 |
| SPMC-11 Host | A06B-6082-H211 |
| SPMC-11 Power Board | A16B-2202-0682 |
| Documented Software | 9D10, 9D11 or 9D12 ROM series, depending on configuration |
| Common Drive Suffixes | #H510, #H511 and #H512; verify the exact installed version |
| Board Edition | Edition requirements vary by amplifier hardware revision |
| Status | Discontinued by manufacturer; stock subject to availability |
| Condition | New, refurbished, or used 90% new; subject to stock |
| Testing | 100% tested before shipping; test video available |
| Handling | Normally 1–2 business days |
| Shipping / ETA | DHL, UPS, or FedEx worldwide; typically 3–7 business days |
| Warranty | 1 year for new/refurbished; 3 months for used 90% new |
| Service / Packing | Free technical support; anti-static reinforced packing |
Alpha SPMC Spindle-Control Functions
A20B-2001-0781 provides the control platform for compatible compact Alpha spindle modules. It works with the amplifier power board to manage spindle commands, feedback, protection and diagnostic functions.
SPMC-5.5 and SPMC-11 Compatibility
In A06B-6082-H206 SPMC-5.5 assemblies, the control board operates with the A16B-2202-0681 power board. In A06B-6082-H211 SPMC-11 assemblies, it operates with A16B-2202-0682. A20B-2001-0780 is associated with other SPMC configurations and should not be assumed interchangeable.
ROM, Edition and Testing Notes
Check the complete #H510, #H511 or #H512 amplifier suffix, ROM labels and PCB edition. REACO CNC inspects the board number, connectors, ROM, components, alarm functions and spindle operation in a compatible SPMC setup as applicable. Back up relevant spindle parameters before replacement.
Related resources: FANUC circuit boards, FANUC spindle amplifiers and FANUC spindle drive repair services.
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