FANUC A06B-6117-H208 Servo Amplifier Module – 2-Axis αi Drive for CNC Motion Control

The FANUC A06B-6117-H208 is a 2-axis αi series servo amplifier module designed for high-performance CNC machine axes. From my experience, it’s a reliable drop-in for many machining centers and lathes that use the FANUC αi ecosystem. It ties into the shared DC bus from the αi Power Supply Module and communicates with the CNC over the FSSB fiber interface, which keeps wiring straightforward and service time low.

Order Placement Process and Guarantees

• Warranty: 365 days
• Lead time: 1 week if in stock; no more than one month at the latest
• Payment terms: 50% advance payment; full payment prior to delivery
• Express options: FedEx, UPS, DHL

Key Features

• 2-axis αi servo amplifier: Manages two servo axes in one compact module, which typically saves cabinet space and simplifies service.
• FANUC FSSB fiber interface: Fast optical link to the CNC; you might notice reduced noise sensitivity versus copper links.
• Shared DC bus with αi Power Supply Module: Enables energy sharing and efficient regeneration across axes in many cases.
• Integrated protections: Overcurrent, overheat, and DC bus monitoring help protect motors and the drive electronics.
• Encoder feedback compatibility: Works with FANUC αi servo motor feedback for precise positioning and smooth motion.
• Service-friendly design: Clear status LEDs and standardized connectors; technicians typically complete replacements quickly.

Technical Specifications

Application Fields

This module is commonly used in CNC machining centers, turning centers, grinders, and gantry systems that need smooth multi-axis motion. We also see it driving external axes on robotics fixtures and precision pick-and-place lines where synchronized motion and rapid acceleration are important. One thing I appreciate is how seamlessly it integrates with existing FANUC αi motors and CNCs, which reduces commissioning time after a replacement.

Advantages & Value

• Genuine ecosystem fit: Designed for the αi platform, so parameter migration and wiring typically remain unchanged.
• Lower downtime risk: Widely field-proven; spare availability and straightforward setup usually keep machines running.
• Energy efficiency: Shared DC bus helps reuse braking energy across axes in many cases, saving power and heat load.
• Service support: Clear alarm codes and standard FANUC diagnostics shorten troubleshooting time.
• Procurement confidence: Stable part number with long market presence—easier lifecycle planning and budgeting.

Installation & Maintenance

• Cabinet & mounting: Install vertically in an enclosed cabinet with adequate ventilation. Keep top/bottom clearance for airflow and mount on a rigid backplate.
• Power & grounding: Feed from the correct αi Power Supply Module DC bus; bond the PE ground with a short, low-impedance connection.
• Fiber optics: Route FSSB fibers with gentle bend radius; observe TX/RX orientation. Avoid tight bends and electrical cables with high noise.
• Wiring checks: Verify motor phases, encoder connectors, and brake leads. Tighten terminals to the manufacturer’s torque values to prevent heat buildup.
• Commissioning: Restore CNC parameters/servo settings from backup, run servo tuning/zero return, and verify alarm history is clear.
• Routine care: Clean dust filters, inspect the cooling fan operation, and re-seat connectors during scheduled maintenance. From my experience, a quick visual every quarter prevents most nuisance faults.
• Safety: Wait for DC bus discharge before touching terminals; confirm the charge LED is off and measure with a meter if needed.

Quality & Certifications

• Certifications: CE marking; UL recognition and RoHS compliance are typical for FANUC αi servo modules.
• Warranty: 12 months (365 days) coverage.
• Condition: New or professionally refurbished units available depending on request; each unit is function-tested prior to shipment.

Related/Supporting Components

To complete a build or replacement, customers often pair the A06B-6117-H208 with:

• FANUC αi Power Supply Module (e.g., A06B-6114-xxxx) to provide the DC bus.
• FANUC αi servo motors (αiS / αiF series) matched to the axis capacity.
• FSSB fiber optic cables and motor/encoder harnesses suitable for the cabinet length and routing.