FANUC A06B-6290-H155 Servo Amplifier Module – Dual‑Axis αiSV for Precise, Reliable Motion Control

The FANUC A06B-6290-H155 is commonly recognized as a dual‑axis αiSV servo amplifier module (often the 15/15 class). It’s built for CNC machinery that needs tight, repeatable motion with FANUC αi servo motors and FSSB fiber‑optic communication. From my experience, it’s a straightforward drop‑in when you’re maintaining 0i/30i/31i/32i platforms, and it typically keeps commissioning time low because parameters and diagnostics flow cleanly through FSSB.

You might notice that these modules tend to run quietly and stay stable under heavy duty cycles. For plants where downtime can cost thousands per hour, this particular model seems to be a safe bet—especially when you want a reliable dual‑axis footprint without reworking cabinet layouts.

Order Placement Process and Guarantees

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

One thing I appreciate is how predictable the lead times are on this model; it typically shortens maintenance planning and helps you align with scheduled shutdowns.

Key Features

• Dual‑axis αiSV architecture – Drives two servo axes in a compact footprint, typically the 15/15 current class for balanced machine axes.
• FSSB fiber‑optic communication – Native FANUC FSSB link to 0i/30i/31i/32i controllers for fast diagnostics and stable motion loops.
• Matched to αi servo motors – Designed for FANUC αiS/αiF series motors, keeping tuning and maintenance consistent across the machine.
• DC bus from αi Power Supply Module – Typically powered from a dedicated FANUC PSM, simplifying line power distribution and regeneration handling.
• Integrated protections – Overcurrent, overload, and overvoltage protections to reduce unplanned failures in most cases.
• Service‑friendly layout – Clear terminal access and status indicators; techs usually swap these in under an hour with proper prep.

Technical Specifications

Brand / Model	FANUC A06B-6290-H155 (dual‑axis αiSV)
HS Code	850440 (Static converters – servo drive)
Power Requirements	DC bus supplied by FANUC αi Power Supply Module (typically ~283–325 VDC); control supply per FANUC cabinet standard (commonly 24 VDC)
Axes / Capacity	2 axes; commonly the 15/15 current class for αiS/αiF servo motors
Communication Interfaces	FANUC FSSB fiber‑optic interface to CNC (0i/30i/31i/32i series)
Signal I/O Types	Motor power outputs (U/V/W) x2; motor brake supply; feedback handled via FSSB (αi encoder data)
Operating Temperature	0–45°C inside a properly ventilated cabinet; non‑condensing environment recommended
Installation Method	Panel/cabinet mounting, vertical orientation; forced‑air cooling path maintained per FANUC guidelines
Dimensions & Weight	Dual‑axis αiSV frame (varies by revision); typically around 380 × 90 × 300 mm; approx. 7–9 kg

Application Fields

This module is usually specified in:

• CNC machining centers and turning lines (X/Z, feed axes, indexing)
• Grinding and EDM equipment where smooth low‑speed control matters
• Pick‑and‑place, transfer stations, and gantry axes
• Electronics assembly fixtures and light robotics auxiliaries

A customer in automotive machining told us they replaced an older dual‑axis amp with the A06B-6290-H155 and were back in production the same shift—no parameter hunting, just a quick fiber loop check and motor phasing verify.

Advantages & Value

• Reliability in production – Proven hardware that typically runs for years with routine cabinet upkeep.
• Compatibility – Works cleanly with FANUC αi motors and FSSB‑based CNCs, reducing integration risk.
• Cost control – Dual‑axis format can lower per‑axis cost and save cabinet space.
• Service & spares strategy – Easy swap reduces downtime; stocked units keep maintenance windows short.

Installation & Maintenance

• Cabinet standards – Mount vertically in an enclosure that meets industrial cabinet standards (proper bonding/grounding and ingress protection).
• Ventilation – Keep top/bottom clearance and airflow unobstructed; avoid recirculating hot air from nearby drives.
• Wiring – DC bus bars from the αi Power Supply Module; FSSB fiber from CNC; motor U/V/W leads and brake wiring; shield grounds terminated per FANUC practice.
• Commissioning – Verify FSSB loop integrity, axis channel assignment, motor encoder compatibility, and proper parameter mapping in the CNC.
• Routine maintenance – Quarterly dust removal, fan check, terminal torque verification; keep cabinet temperature within spec. Firmware/parameter alignment should match the CNC revision in most cases.
• Safety – Lockout/tagout before servicing; discharge DC bus; confirm brake hold before working on mechanical axes.

Quality & Certifications

• CE conformity for industrial control equipment
• cUL/UL recognition (typical for FANUC drive modules)
• RoHS compliance (region dependent)
• Manufacturer’s warranty: 12 months

Recommended Complementary Components

To complete or service the axis drive chain efficiently, teams typically pair this module with:

• FANUC αi Power Supply Module (PSM), e.g., A06B-6110-xxx or A06B-6210-xxx depending on system generation
• FANUC αiS / αiF servo motors sized to the 15‑class current rating
• FSSB fiber‑optic cables and cabinet cooling accessories (filters/fans) to maintain clean airflow