The FANUC A17B-2000-0203 is a power-stage circuit board used inside compatible FANUC αiSP-B spindle amplifier modules. It supports the amplifier’s high-power switching, DC-bus and motor-output connections and works with a separate spindle control PCB.

A documented application is the A06B-6220-H015#H600 αiSP 15-B spindle amplifier, where A17B-2000-0203 is paired with an A20B-2102-067x control board. This listing is for the internal power board, not the complete spindle amplifier.

A17B-2000-0203 Product Information

Spindle Amplifier Power-Stage Function

The A17B-2000-0203 forms the high-power section of the compatible spindle amplifier. It routes DC-bus energy through the installed power devices to create controlled three-phase output for the spindle motor, while the separate control PCB handles commands, feedback, communication and protection logic.

Replacement and Compatibility Checks

Confirm A17B-2000-0203 on the original board together with its printed revision, connector positions, power-device arrangement, metal base and complete A06B amplifier label. Do not select it solely because another drive is from the A06B-6220 or αiSP family. Early and later assemblies can use different internal boards.

Testing and Installation Notes

REACO CNC checks the label, PCB, capacitors, terminals, connectors, power devices, solder joints and insulation, followed by spindle-amplifier testing when applicable. Qualified personnel should isolate incoming power, discharge the DC bus and diagnose the control board, power board, motor and cables before replacement.

Related resources: FANUC circuit boards, FANUC spindle amplifiers and FANUC drive repair services.