A06B-6079-H103 Fanuc Servo Amplifier Unit Alpha SVM 1-40S

Buy online your A06B-6079-H103 Fanuc Servo Amplifier Unit Alpha SVM 1-40S reference A06B-6079-H103 from our US e-store Cnc-shopping USA, specialist in CNC machine-tools spare parts.

This FANUC Alpha SVM 1-40S module is a single-axis servo amplifier used across FANUC alpha servo systems to drive one feed axis. It handles motor current control and closed-loop torque output under CNC command and communicates via the PWM A/B interface. Commonly installed in FANUC-based lathes, machining centers and handling equipment, it serves as a direct replacement unit for the same reference in production machines and retrofit projects.

The unit operates on the alpha system DC link and supplies a rated 230 VAC phase output to the servo motor. With a practical rating of 1.25 kW and a nominal output current of 5.9 A, it suits small to mid-size feed axes where consistent torque delivery and responsive current control are required. In typical cabinets it mounts alongside FANUC alpha power supply modules and other servo channels to form a compact multi-axis rack layout.

Interface labeling on the front plate indicates PWM A/B, which is essential for pairing with matching FANUC controls and alpha motor feedback arrangements. For maintenance teams this means a straightforward drop-in replacement when the original board set or power stage fails, since the mechanical layout and connectors follow the standard alpha footprint for quick cabinet swap-out.

Electrical characteristics provided by the manufacturer specify a DC link operating window of 283-325 VDC and a rated motor output of 230 VAC at 5.9 A. The module incorporates an internal cooling fan and power switching devices designed for continuous machine tool duty. When used within the proper alpha power supply capacity and motor sizing, the amplifier delivers stable axis operation with clean commutation under CNC control.

Reference: A06B-6079-H103

Manufacturer: FANUC

Product type: FANUC Servo Drive 6079 6080 alpha

Main function: Single-axis alpha servo amplification with PWM A/B command

Applications: Feed axis control on FANUC-based lathes, mills, machining centers, gantry positioning and retrofit projects using alpha servo motors

Key technical data: Alpha SVM 1-40S module, PWM A/B interface, DC link input 283-325 VDC, rated motor output 230 VAC at 5.9 A, power rating 1.25 kW, single-axis construction, manufactured in Japan

In the field this module is commonly sourced as a spare part to restore machines showing servo overcurrent alarms, axis trips or unstable current feedback attributable to a failing amplifier. Matching the exact A06B-6079-H103 reference provides a clean replacement path without cabinet rework or parameter changes. Many maintenance teams keep at least one tested unit on the shelf to limit machine downtime and to support weekend or night-shift interventions.

For planned maintenance and rebuilds, a refurbished unit helps extend the lifecycle of legacy FANUC installations. Keeping a dedicated amplifier in industrial spare inventory also supports faster repair turnaround when multiple machines share the same alpha platform. This approach minimizes production interruptions and stabilizes long-term support for older assets.

Each A06B-6079-H103 is functionally checked on dedicated FANUC CNC simulators with alpha servo motors under dynamic load. Preventive parts with known wear profiles such as capacitors, power transistors, cooling fans and relays are addressed during refurbishment. Units are packed for industrial transport and supplied with a warranty. Depending on availability, products are commonly dispatched from our Florida warehouse.

When an obsolete part fails unexpectedly, this module can serve as an emergency replacement unit to cut unplanned downtime. Cnc-shopping USA supports repair service and may provide exchange service options on request so older FANUC alpha installations remain fully operational.

Frequently asked questions about A06B-6079-H103:

Is this a direct drop-in for an existing alpha cabinet using PWM A/B?
Yes, it is designed as a drop-in replacement when the existing amplifier is the same A06B-6079-H103 reference with the PWM A/B interface. Verify connector positions and interface markings before installation.

What supply does the amplifier require?
It runs from the alpha DC link provided by the companion FANUC power supply module within the cabinet. The specified DC link operating range is 283-325 VDC.

What motor sizes are typically paired with this amplifier?
It is suited for small to mid-size axes around the stated 1.25 kW capability and 5.9 A rated output. Final selection must match motor current ratings and the machine axis load.

Can this unit be used to replace other SVM 1-xxS references?
Use the exact A06B-6079-H103 part number for a straightforward swap. Different SVM references may vary in current rating or interface details and should not be interchanged without verification.

Do parameters need to be changed after replacement?
When exchanging like-for-like with the same reference, axis parameters in the CNC are generally retained. Back up machine parameters prior to any service operation as a standard maintenance practice.