FANUC A20B-2100-0762 is an Alpha i power supply module control board used inside selected FANUC αi PSM units. It manages power-supply command, monitoring, alarm and protection functions; it is not a complete standalone power supply module.

Documented applications include selected A06B-6110 200V αiPS modules and A06B-6120 high-voltage αiPS modules. The complete PCB number and printed revision code must be checked before replacement.

A20B-2100-0762 Product Information

Alpha i Power Supply Control Function

Installed in the PSM, A20B-2100-0762 processes operating commands and supervises conditions associated with the input power, pre-charge circuit, DC link, regenerative operation, cooling and alarms. Actual voltage and capacity depend on the A06B power-supply assembly in which the board is installed.

PCB Revision and Compatibility

Do not select the board only from the Alpha i appearance. Compare A20B-2100-0762, the slash revision, software or programmable devices, connectors and the complete A06B host-module number. A20B-2100-0760, A20B-2100-0761 and A20B-2101-0392 should not be treated as automatic substitutes without technical confirmation.

Testing and Installation Notes

REACO CNC checks the label, PCB revision, connectors, capacitors, relays, power-supply circuits, alarm control and communication with a compatible PSM test setup as applicable. The supplied revision and component layout should match the quotation or product photos.

Qualified personnel must isolate power and wait until the PSM charge indicator is off before removing the board. Related resources: FANUC CNC circuit boards and FANUC PCB and drive repair service.