FANUC A06B-6127-H202 Alpha i Servo Amplifier Module — Dual-Axis AiSV-10/10HV for 400V CNC Systems

There's a detail on this amplifier's specification that matters before anything else: the "HV" in its designation isn't a minor variant label. It defines the entire electrical world this drive belongs to — 400V AC, three-phase input, the high-voltage class of FANUC's Alpha i servo platform, designed from the ground up for larger CNC machine tools operating on European-standard and industrial-grade power infrastructure.

If your machine runs on a 400V supply and your CNC control is a FANUC 30i, 31i, 32i, or 35i series, the A06B-6127-H202 is the unit you need. A 200V-input servo module cannot be substituted here. The power architecture is different, and the distinction is fundamental.

We stock the A06B-6127-H202 in new and used (inspected) condition, ready to dispatch worldwide within 0–3 working days.

The 6127 Series: First-Generation Alpha i High Voltage Platform

The A06B-6127 series represents FANUC's original Alpha i HV servo amplifier module family — the first generation of drives purpose-built for 400V CNC environments. Where the 200V Alpha i modules (such as the 6096 and 6117 series) serve standard-voltage machining centers, the 6127 series was designed for a different class of machine: larger machining centers, heavy-duty turning cells, and precision systems often found in European, Japanese, and high-specification industrial facilities where 400V three-phase is the grid standard.

The H202 sits at the entry of the dual-axis range within this family. Its "SVM2" designation confirms it drives two independent servo axes simultaneously — L and M — from within a single module housing. Both channels are rated at 10A, making it suited to the smaller alpha servo motors used on secondary or precision axes within 30i/31i-controlled systems.

Successor models in the same role — such as the A06B-6290 series — began replacing the 6127 from around 2011 onward. That generational shift means a significant installed base of machines still running 6127 HV modules, and replacement demand for the H202 remains steady.

Technical Specifications

Why HRV Matters on This Drive

One aspect of the 6127 series worth understanding for any maintenance or procurement engineer: HRV — High Response Vector control — is the servo algorithm that governs how the FANUC CNC communicates with these amplifier modules to achieve tight position and velocity loop closure.

The A06B-6127-H202 supports both HRV2 and HRV3. HRV3 in particular enables the CNC to run servo loops at higher sampling frequencies, producing noticeably smoother motion at low feed rates and tighter positional accuracy during complex contouring. For machines where surface finish quality matters — precision mold machining, aerospace components, high-tolerance die work — the HRV capability of the drive is as important as its current rating.

This is not a capability that's interchangeable across drive generations. When replacing the H202, the incoming unit must support the same HRV level that the machine's CNC has been configured to use. A drive with lower HRV support installed in a machine using HRV3 parameters will require parameter adjustment — or will alarm on startup.

H202 in Context: The Dual-Axis HV Family

Within the 6127 series, the part number suffix encodes both axis count and output current. The "2" in H2xx means dual-axis (two channels in one module). The number following identifies the current range: H202 at 10/10A is the smallest dual-axis HV variant, with the series scaling up through H203 (20/20), H205 (20/40), H206 (40/40), H207 (40/80), and H209 (80/80). Single-axis HV modules carry H1xx designations; three-axis modules are H3xx.

This matters practically: if your machine uses an H203 or H205, the H202 cannot substitute — not because of interface differences, but because the output current rating won't match the motors on your machine. Always confirm the full part number before ordering.

Condition Options Explained

New units are sourced as original FANUC stock, unused, and carry a 12-month warranty from our warehouse. For facilities with low downtime tolerance or machines running in high-utilization environments, a new unit eliminates any uncertainty about prior service history.

Used (inspected) units have been examined and carry a 3-month warranty. They represent a practical option for facilities managing MRO budgets, or where the H202 is needed as a secondary spare rather than a primary replacement. Both options ship in original packaging.

Ordering, Payment & Shipping

Worldwide dispatch via DHL and FedEx. Most orders leave our facility within 0 to 3 working days following payment confirmation. Combined shipping is available for multi-item orders.

Payment options:

• Bank Transfer (T/T) — accepted for all order values
• PayPal — for orders up to $500
• Western Union — accepted for all order values

Import duties and local taxes at the destination are the buyer's responsibility. If you need a shipping cost estimate for your country before ordering, contact us and we'll confirm promptly.

Warranty & Returns

Returns accepted when units arrive damaged, incomplete, or not as described — or prove non-functional within 4 days of receipt. Return freight is the buyer's responsibility. Items must be returned in original condition with the warranty label intact.

Failures caused by installation errors, incorrect parameterization, or mismatched HV power supply connections fall outside warranty coverage. If there's uncertainty about compatibility with your specific machine configuration, reach out before purchasing.

Frequently Asked Questions

Q1: My machine uses a 200V servo system — can the A06B-6127-H202 be used as a replacement if I upgrade the power supply?

No. The 6127 HV series is not simply a voltage-selectable version of a 200V drive. It is a distinct hardware platform with different power stage components, different power supply module requirements (the HV-series aiPS-HV power unit), and different wiring configurations. The two systems are not interchangeable, and attempting to retrofit one in place of the other requires far more than a power supply swap — it typically involves changes to the entire servo section of the machine cabinet. If your current system runs on 200V, the correct replacement belongs to a 200V Alpha i series, not the 6127 HV.

Q2: What is the difference between the A06B-6127-H202 and the A06B-6290-H202?

The 6290-H202 is the second-generation replacement for the 6127-H202, introduced from around 2011. Both are dual-axis AiSV-10/10HV drives, but the 6290 series incorporates updated control electronics and is compatible with newer FANUC CNC generations including the 0i-MD and 0i-TD as well as the 31i-B and related platforms. The 6127-H202 is the first-generation unit, primarily matched to 30i/31i Model A controls. If your machine was originally built with a 6127-H202, replacing it with a 6290-H202 is generally possible but requires parameter review and CNC compatibility confirmation — it is not guaranteed to be plug-and-play.

Q3: The H202 has two axes — does this mean both axes must be on the same module, and what happens if only one axis is faulty?

Yes, the H202 is a single module that drives both the L and M axes. The two channels are physically housed and powered together. If diagnostics confirm only one axis channel has failed, the entire H202 module must still be replaced — the channels are not serviceable or replaceable independently. When installing the replacement, both axes will be operational from the new module, so the previously functioning axis effectively gets a "fresh" drive as well. This is standard practice with modular servo amplifiers of this design.

Q4: What battery does the A06B-6127-H202 use, and does it need to be replaced periodically?

The H202 uses a Panasonic BR-2-3 AGCT4A lithium battery, which maintains memory-backed data (typically encoder absolute position data) when the main power is off. Battery life varies with usage and storage conditions, but periodic replacement is recommended as part of routine maintenance on machines running this drive. When replacing the battery, it's important not to touch bare metal parts in the panel — in particular, avoid contact with the HV power circuit sections, as residual high voltage may remain on capacitors after power-down. Follow a safe discharge waiting period as specified in the machine's maintenance manual before working inside the drive cabinet.

Q5: This module was originally installed in a European-built machining center. Can it operate on other regional power standards?

The A06B-6127-H202 is designed for 400V AC three-phase input, which aligns with the standard European industrial supply (typically 380–415V depending on country). It is also compatible with 400V systems in Japan (when using industrial-grade 400V supply), parts of Asia, and other regions running equivalent voltage. It is not suitable for 200V or 240V three-phase systems without a step-up transformer and the appropriate matching HV power supply module. If you're unsure whether your facility's supply voltage matches the requirements of this drive, confirm with an electrical engineer before ordering — operating a 400V drive on an incompatible supply will result in immediate fault conditions or hardware damage.

Confirm availability or request a quote: Contact Ms. Amy — sales01@sande-elec.com | Skype: sandesales01 | Tel: +86 18620505228