Fanuc Servo Module New And Original A06B-6080-H304 A06B6080H304 A06B-6080-H304

FANUC A06B-6080-H304 | S Series 3-Axis Servo Amplifier Module — FANUC 0 / 0-C / 0-D / 15

Part Number: A06B-6080-H304

Manufacturer: FANUC Corporation (Japan)

Product Type: AC Servo Amplifier Module — 3-Axis

Series: S Series

Axis Configuration: 3-axis 

Three Axes, One Module

The A06B-6080-H304 is the three-axis servo amplifier module in FANUC's S Series drive platform — the hardware that powered machining centres, CNC lathes, and turning cells through the late 1980s and 1990s. The H304 suffix identifies this as the three-axis variant of the A06B-6080 series. One module handles three independent servo axes simultaneously, which reduced cabinet component count and simplified the overall drive architecture on multi-axis machines of this era.

Many machines built on FANUC 0-C, 0-D, and Series 15 controls remain in production. When the servo module fails, a like-for-like H304 replacement restores operation without any controller-side parameter changes — provided the replacement is the correct suffix and was tested under actual load conditions.

The suffix matters. Within the A06B-6080 family, H302 is a two-axis variant, H304 is three-axis. These are not interchangeable — the CNC axis configuration, connected motor ratings, and parameter assignments are all matched to the specific module variant. Always confirm the exact suffix from the installed unit's label before ordering.

New or Used — Which to Choose

New / original units come factory-sealed and carry a 12-month warranty. Stock is finite — the S Series is no longer in production. For machines central to production where service life matters, a new unit is the lower-risk choice.

Tested used units are sourced from upgraded or decommissioned machines. They carry a 3-month warranty and are suitable as long-term production spares when stored correctly (anti-static packaging, cool and dry environment). For a machine approaching end of production life, or when a working spare is needed immediately at lower cost, tested used is the practical option.

The critical question for any used unit: was it tested under three-axis load on a live FANUC system? A unit that powers up without fault codes at bench is not the same as one proven to run three production axes under cutting conditions.

Key Specifications

FAQ

Q1: Is the A06B-6080-H304 compatible with a FANUC 0-C controlled machine?

Yes. The A06B-6080-H304 is designed for FANUC Series 0, 0-C, 0-D, 6, 10, 11, 12, and 15 CNC systems. If the machine currently uses an A06B-6080-H304, a like-for-like replacement requires no controller parameter changes. If uncertain about compatibility, provide the machine model and the full part number of the existing drive module before ordering.

Q2: What is the difference between H304, H302, and H306?

The numeric portion of the suffix indicates axis count and output configuration. H304 is a three-axis module; H302 is a two-axis variant. These are not interchangeable — axis count, motor ratings, and CNC parameters must all align with the specific suffix. Always order the exact suffix matching the installed module.

Q3: How can I confirm whether the servo module has failed, rather than the motor or encoder?

Servo alarms on FANUC systems can originate from the amplifier module, servo motor, encoder, feedback cable, or the CNC axis control board. Signs pointing specifically to the amplifier module include overcurrent, overvoltage, or regenerative fault alarm codes, combined with fault LEDs on the module itself at power-up. A module that runs hot before faulting, or fails consistently on the same axis regardless of motor substitution, is a strong candidate for replacement. Where the module supports axis-swapping, testing the same motor and encoder on a different axis helps isolate the fault.

Q4: Can a tested used A06B-6080-H304 serve as a long-term production spare?

Yes, provided it is stored correctly — anti-static packaging, cool and dry environment, away from humidity and vibration. S Series modules are robust; units from well-maintained decommissioned machines commonly have significant remaining service life. The 3-month warranty covers the initial operational period; units that clear this window reliably tend to continue performing well. For critical production machines, pairing a tested used unit as immediate standby alongside a new unit on order is a practical approach.

Q5: How quickly does the unit ship?

In-stock units dispatch within 0–3 business days of confirmed payment. International shipping is via DHL or FedEx with full tracking. For time-critical breakdown situations, confirm stock availability and express shipping options before placing the order.