The FANUC A16B-2203-0662 is an internal power/wiring PCB for compatible single-axis FANUC αiSV160 servo amplifier modules. FANUC documentation assigns it to the 200V-class A06B-6114-H106 and A06B-6117-H106 amplifier configurations.

This is a replacement circuit board rather than a complete servo drive. Confirm the full A16B number, suffix revision and A06B amplifier nameplate because standard αiSV160 and αiSV160L amplifiers use different power-board numbers.

A16B-2203-0662 Product Information

αiSV160 Power-Stage Function

Within the complete amplifier, the A16B-2203-0662 supports 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 to operate one servo axis. The associated αiSV160 amplifier provides 45 Arms rated output with a nominal 160 Apeak current limit.

Compatibility and Model Differences

Match the PCB revision, amplifier order number, unit specification, connectors, heat sink and power-device layout. The level-up αiSV160L model A06B-6117-H156 uses A16B-2203-0663, not A16B-2203-0662. A16B-2203-0661 is associated with αiSV80, while αiSV360 uses A16B-2203-0625 or A16B-2203-0875 depending on configuration.

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.