FANUC A06B-6290-H109 – Servo Amplifier Module for precise FANUC αi motion control

The FANUC A06B-6290-H109 is a servo amplifier module used across many FANUC CNC platforms to drive 200‑V class αi servo motors with stable torque, quick response, and the kind of alarm diagnostics maintenance teams actually rely on. It slots into the standard FANUC modular power system, communicates via FSSB fiber, and—when matched with the correct power supply—delivers the smooth axis performance you expect on machining centers, turning lines, and robotics axes. From my experience, it’s a practical, drop‑in replacement in many cases when you’re getting servo faults or need an extra axis channel with known-good compatibility.

Our Order Process & Guarantees

• Warranty: 365 days from delivery.
• Lead time: typically 1 week if in stock; no more than 1 month at the latest.
• Payment terms: 50% advance payment; full payment prior to delivery.
• Express options: FedEx, UPS, DHL—your account or ours.
• Every unit function-tested before shipment; ESD-safe, protective packaging.

Key Features

• FANUC FSSB fiber interface – Direct connection to FANUC CNCs (e.g., 0i‑D/0i‑F/30i/31i/32i series); quick axis tuning and diagnostics over the bus.
• Designed for αi 200‑V class servos – Compatible with FANUC αiS/αiL motors; stable velocity/position loop performance for most machining tasks.
• Module-to-module DC link – Powered from the matching FANUC αi power supply; no direct mains on the amplifier, which simplifies field service.
• Integrated protections – Overcurrent, overvoltage, overheat, and ground fault detection with clear alarm codes to shorten troubleshooting time.
• Book-size footprint – Compact cabinet use; typically mounted vertically with top/bottom airflow for reliable thermal behavior.
• Serviceable connectors – Motor U/V/W, brake control, and encoder (serial feedback) connections laid out for quick swap-out.
• Swap-friendly parameters – Parameters are managed by the CNC; replacements usually restore quickly with existing machine data.

Technical Specifications

Application Fields

This module is widely used in CNC machining centers, turning cells, gantry systems, pick‑and‑place lines, electronics assembly, and high‑speed packaging axes where precise position/velocity control is needed. You might notice that integrating it on existing FANUC 0i‑F or 31i platforms is usually straightforward, especially when motor and axis parameters are already validated on the machine.

Advantages & Value

• Reliability that reduces downtime – Stable operation in most factory environments; alarm codes are familiar to maintenance teams.
• Compatibility – Works within the standard FANUC αi ecosystem (motors, PSUs, CNCs), simplifying spare parts strategy.
• Cost control – Replace only the failed amplifier instead of an entire axis package; typically short commissioning time.
• Technical support – Parameter backup/restore and fiber loop checks are well-documented; we assist with pre-ship test reports when needed.

A Tier‑1 automotive plant told us their team swapped an A06B‑6290‑H1xx unit during a planned stop, did a fiber loop check, and were cutting parts again in under 40 minutes—seems to be common when the motor and PSU are known-good.

Installation & Maintenance

• Cabinet & mounting – Mount vertically on a grounded metal backplate; allow unobstructed top/bottom airflow. Keep ambient oil mist and dust low.
• Power & grounding – Feed DC from the matching FANUC αi power supply; maintain solid PE grounding and shielded motor/encoder cabling.
• Wiring – Torque terminal screws evenly; route motor power away from signal/fiber. Verify brake polarity and encoder connectors before power-up.
• Commissioning – After replacement, confirm CNC parameters, motor model, and servo tuning values. Run a low‑speed jog and alarm log check first.
• Routine care – Clean filters, check fan operation and connector seating quarterly. Review alarm history. Firmware/ladder is CNC‑side; back up before changes.
• Safety – Lock‑out/tag‑out. Discharge DC link before handling. Verify DC bus is safe—capacitors can hold charge briefly after power‑off.

Quality & Certifications

• Meets typical OEM markings for industrial control equipment: CE and UL (component level), RoHS compliant in most cases.
• Each unit is function-tested; serialized report available upon request.
• Warranty: 12 months (365 days) from delivery.

Related & Supporting Components

• FANUC αi Power Supply Modules – e.g., A06B‑6210‑Hxxx series that provide the DC link for A06B‑6290‑H109.
• FANUC αi Servo Motors – αiS/αiL series (200‑V class) matched to axis load and current rating.
• FSSB Fiber Optic Cables – FANUC-grade fibers for CNC‑to‑amplifier connectivity and loop integrity.
• Regenerative Resistor Units – If your machine’s duty cycle requires external regen, match to the PSU specification.

Note: Specifications can vary by machine build and amplifier rating. If you share your CNC type, motor model, and existing amplifier label, we can verify axis current and the exact A06B‑6290‑H109 compatibility before shipping.