Description
FANUC A06B-6121-H030#H550 – αi Series Servo Amplifier Module for precise CNC axis control
The FANUC A06B-6121-H030#H550 is a Servo Amplifier Module from the αiSV family, typically used to drive FANUC αi series servo motors on machining centers, lathes, EDMs, and automated lines. From my experience, it’s a dependable mid-range module that pairs well with common 3- to 5-axis CNC machines, delivering smooth axis control, fast response, and clean integration via FANUC’s FSSB fiber link. The “#H550” suffix denotes a specific option/software configuration used by certain OEMs; in many cases it’s fully interchangeable with H030 units of the same generation once parameters are matched.
Our Order Process & Guarantees
- Warranty: 365 days
- Delivery: 1 week if in stock; no more than 1 month at the latest
- Payment: 50% advance payment; full payment before delivery
- Express Shipping: FedEx, UPS, DHL
- Testing & Packaging: Units are electrically checked and packed in anti-static protective materials; foam-in-place for transit safety
Key Features
- FANUC αiSV platform: Designed for αi servo motors, giving tight speed/position control and stable low-speed torque.
- FSSB fiber interface: Simple, noise-immune connection to the CNC; reduces wiring complexity and improves reliability on long cable runs.
- Diagnostics with LED/7-seg alarms: Quick fault isolation on the door—saves time during commissioning and maintenance.
- Shared DC bus with PSM: Energy sharing among axes via the Power Supply Module; in many cases it reduces peak current draw.
- Integrated brake control & protections: Overcurrent/overvoltage/overheat protections and motor brake control are built in.
- #H550 option set: Typically indicates a specific OEM-approved hardware/software variant; check pairing with your CNC and motor ratings.
- Service-friendly form factor: Front-access terminals and standard panel-mount layout simplify replacement during downtime.
Customer feedback: “We swapped an H030#H550 into a 4-axis VMC after a lightning surge. It synced with the existing PSM and motors without surprises—just parameter touch-up and it was cutting parts the same shift.”
Technical Specifications
| Brand / Model | FANUC A06B-6121-H030#H550 (αiSV Servo Amplifier Module) |
| HS Code | 8504.40 (Static converters / drive electronics) |
| Power Requirements | Supplied via FANUC αi Power Supply Module (PSM) shared DC bus; 200–240 VAC class mains are connected to the PSM, not the amplifier directly |
| Communication Interfaces | FSSB fiber-optic link to CNC (FANUC control) |
| Signal I/O Types | Motor power U/V/W outputs; motor thermal/brake control; serial encoder feedback compatible with αi motors; 24V control signals as per wiring manual |
| Operating Temperature | 0 to 55 °C, non-condensing (typical control cabinet environment) |
| Cooling | Forced air (integrated fan), vertical panel mounting for proper airflow |
| Installation Method | Panel-mount inside control cabinet; connects to PSM via DC bus bars/cables; FSSB fiber to CNC |
Related & Supporting Products
- FANUC A06B-6121-H015 / H020 / H040 – Same αiSV family with lower/higher current ratings; select based on motor size and axis load.
- FANUC A06B-6114-xxxx (PSM) – Power Supply Modules providing the shared DC bus required by the αiSV amplifier.
- FANUC A06B-6127-xxxx (αiSP) – Spindle Amplifier Modules for main spindle drives; often paired in the same cabinet.
- FANUC αiS/αiF Servo Motors – Compatible motor families; check motor current and encoder type for exact pairing.
- FANUC FSSB Fiber Cables (e.g., A660-4007-Txxx) – Fiber-optic links between CNC and amplifiers; length and bend radius matter in tight cabinets.
Installation & Maintenance
- Cabinet environment: Install in an IEC/NEMA-grade enclosure with clean, dry air. Maintain vertical orientation and allow top/bottom clearance for fan exhaust.
- Wiring practices: Keep motor power leads separated from signal/fiber paths. Properly ground the amplifier and motor frames; torque bus bar and terminal screws to spec.
- FSSB & parameters: Use clean fiber connectors and verify CNC axis/channel assignments. Parameter transfer should match the original H030#H550 application, especially current limits and tuning.
- Safety: Lockout/tagout mains before servicing. Discharge time on the DC bus must be observed; the charge LED should be fully off before touching terminals.
- Routine care: Quarterly dust cleaning (dry air, ESD-safe), fan health check, terminal re-torque if required. Firmware/option updates, where applicable, are typically done through the CNC by a qualified technician.
- Spare strategy: For multi-shift production, keeping one H030 on the shelf typically shortens downtime to under an hour when parameters are backed up.
Quality & Certifications
- CE and UL compliant design for industrial control equipment
- RoHS-conforming materials in most production runs
- Manufacturer-grade functional testing; 365-day warranty coverage
One thing I appreciate is how consistent the αiSV series behaves across revisions—once you match the option code (#H550 here) and motor/CNC specs, the replacement process is typically straightforward.
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