FANUC A16B-2202-0542 is the internal wiring board for the Alpha PSMR-3 power supply module. FANUC documents it for the A06B-6081-H103 power supply, where it forms the base power and wiring assembly used with the appropriate plug-in control PCB.

This part is not a CNC memory board. Its printed revision determines which PSMR-3 hardware revision and control board it supports, so confirm the full board marking before replacement.

A16B-2202-0542 Product Information

Alpha PSMR-3 Power-Supply Platform

A16B-2202-0542 provides the internal wiring platform for the compact Alpha PSMR-3. Unlike a line-regenerative PSM, the PSMR uses resistance discharge to handle regenerated energy while supplying the DC link for compatible Alpha servo or spindle amplifier modules.

Board Revision and Control PCB Matching

The A16B-2202-0542 number alone is not enough to confirm interchangeability. Revision 06B-or-later boards are documented with revision-C-or-later A06B-6081-H103 modules and A16B-2001-0890 control boards. Revision 05A-or-earlier boards are documented with earlier PSMR-3 modules and A16B-2300-0100 control boards.

Testing and Installation Notes

REACO CNC checks the board number, revision, connectors, terminals, solder joints, insulation condition and operation in a compatible PSMR-3 setup as applicable. Qualified personnel must isolate input power and confirm that the DC-link charge indicator is off before removing the board.

Related resources: FANUC circuit boards, FANUC power supply modules and FANUC PCB and drive repair services.