The FANUC A16B-2203-0660 is an internal power/wiring PCB for compatible single-axis FANUC αiSV40 servo amplifier modules. FANUC documentation lists this board in both standard αiSV40 and level-up αiSV40L 200V-class configurations.

This is a replacement board, not a complete servo amplifier. Compatibility must be checked using the A16B drawing number and revision together with the full A06B amplifier nameplate, current class, connectors and power-device layout.

A16B-2203-0660 Product Information

αiSV40 Power-Stage Function

Within the complete amplifier, the A16B-2203-0660 forms part of the high-current power and motor-output section. It works with the separate control PCB, DC-link supply, cooling assembly and FSSB servo-control system. The associated αiSV40 amplifier provides 13 Arms rated output with a nominal 40 Apeak current limit.

Standard and Level-Up Compatibility

The same base power-board number is documented for standard αiSV40 units and the A06B-6117-H154 αiSV40L version, but this does not remove the need to match the PCB revision and complete amplifier configuration. A16B-2203-0691 is used for αiSV20, while A16B-2203-0661 is used for αiSV80; neither is a direct substitute.

Testing and Installation

REACO CNC checks the label, PCB condition, terminals, capacitors, power semiconductors, insulation, DC-link section and amplifier operation on a compatible test platform where available. Isolate power and allow the DC link to discharge completely before service. Installation should be completed by qualified CNC personnel.

Related resources: FANUC servo PCBs, FANUC CNC controls and FANUC servo repair services.