A06B-6079-H301 FANUC Alpha 3-Axis Servo Amplifier

Detailed Description A06B-6079-H301 is FANUC Alpha series three-axis servo amplifier, model SVM3-12/12/12, specially designed for FANUC CNC machine tool control systems. It adopts 283~325VDC DC bus input and outputs 230V AC power to drive three independent servo axes (L, M, N), each axis rated 3.0A continuous current. This servo unit communicates with CNC controller via FSSB high-speed servo serial bus, widely applied in CNC milling, lathe, machining center and EDM equipment requiring precise multi-axis interpolation and positioning.

The amplifier uses IGBT power module and digital PWM control technology, delivering fast response and stable torque output for high-precision machining. It is equipped with multiple encoder feedback ports for connection with FANUC Alpha series servo motors. The front panel has status LED indicators and alarm code display, helping maintenance staff quickly judge faults such as overcurrent, overheat, fan failure, low voltage and encoder error. Built-in cooling fan ensures heat dissipation under continuous heavy-duty operation. It supports closed-loop position control, speed control and torque control modes to meet high-speed cutting and contour machining demands.

It integrates comprehensive hardware protection functions, including overcurrent protection, overvoltage protection, undervoltage protection, overheat protection, motor overload protection, encoder signal loss protection and short-circuit protection. When abnormal conditions are detected, the drive immediately cuts off power output and triggers CNC alarm to protect the amplifier, servo motor and mechanical structure. IP20 protection grade, cabinet vertical installation, working temperature range 0~55℃. Compact 3-in-1 modular design saves cabinet space and simplifies wiring compared with single-axis drives.

A06B-6079-H301 is discontinued legacy FANUC CNC spare part. Many old CNC machine tools still rely on this 3-axis servo amplifier. When the original module fails, replacing it with identical A06B-6079-H301 can reuse existing servo motors, power cables, encoder wiring and CNC parameter settings. No major modification of machine mechanical structure or CNC program is needed. Technicians install the amplifier, restore servo parameters and run axis reference setup, so the CNC machine resumes operation rapidly and cuts downtime.

Before shipment, every A06B-6079-H301 undergoes comprehensive bench test, including power-on startup test, FSSB communication test, encoder signal verification, motor JOG running test and alarm protection simulation. All products come with 12-month warranty. Our automation technical team provides remote support for installation, servo parameter backup, axis tuning and fault diagnosis. Fast global shipping is available for urgent maintenance orders.

For automation maintenance engineers and system integrators, A06B-6079-H301 is reliable three-axis servo replacement amplifier for legacy FANUC Alpha CNC systems. It restores original machining precision and axis synchronization performance, extends service life of CNC machine tools and avoids high-cost full reconstruction of the machine control system.