FANUC A06B-6117-H303 3-Axis Alpha i Servo Module

Overview

The A06B-6117-H303 is a three-axis Alpha i servo amplifier module built for CNC systems that need compact multi-axis drive integration without moving away from the original FANUC amplifier architecture.

Public replacement listings consistently identify this model as AiSV-20/20/20, with a 3-axis structure, a 7.5 kW input class, 240 V maximum output, and 6.5 A rated output on the L, M, and N axes.

In practical machine service, a module like this is usually selected when the original cabinet already depends on a three-axis integrated drive layout and the goal is to restore the machine without redesigning the motion hardware.

That makes exact family matching more important than broad feature comparison. Buyers normally search by the exact AiSV model because the value of the module is tied to its place inside the original CNC drive structure.

Because all three axes share the same current class, this model is easier to position than mixed-capacity three-axis amplifiers.

For a product page, the strongest description is direct and technical: A06B-6117-H303 is a FANUC Alpha i 3-axis servo module, model AiSV-20/20/20, intended for CNC replacement, repair, and installed-machine support.

Key Specifications

FAQ

Q1: What kind of product is A06B-6117-H303?
It is a FANUC Alpha i three-axis servo amplifier module. In practical CNC use, it is designed to drive three servo axes from one amplifier assembly, which makes it especially useful in machines where cabinet space, axis coordination, and original drive architecture are all important to preserve during repair or replacement.

Q2: Why is the AiSV-20/20/20 designation important?
That designation confirms the exact family position of the module inside the Alpha i multi-axis servo range.

For technical buyers, this matters because it shows that all three axes belong to the same 20/20/20 class. In real replacement work, that helps avoid confusing the part with higher-capacity or mixed-capacity three-axis modules that may look similar but serve a different application range.

Q3: Are the 6.5 A / 6.5 A / 6.5 A ratings useful in real application matching?
Yes. Those values are one of the easiest ways to place the module correctly in the Alpha i family.

In service work, current class is not just a catalog detail; it helps confirm whether the amplifier belongs to the same output range as the installed unit and whether it is likely to match the intended motor grouping and machine load profile.

Q4: Is this module more suitable for new design or replacement support?
It is much more naturally suited to replacement and machine support. Public sources present it through CNC parts and repair channels rather than as a mainstream new-design platform, which is typical for established FANUC amplifier modules used to keep installed production machinery operating with minimal architectural change.

Q5: What should buyers verify before ordering?
Buyers should verify the exact part number, the AiSV-20/20/20 designation, the 3-axis layout, the B-65282 manual family, and the original machine’s drive configuration.

For FANUC amplifiers, correct family and axis matching are usually more important than broad product-category similarity, especially when one amplifier is responsible for multiple axes in the same cabinet section.