A06B-6134-H302 FANUC AC Servo Amplifier Unit A06B6134H302 AO6B-6I34-H3O2

FANUC A06B-6134-H302 | Beta i SVSP 3-Servo + Spindle Packaged Amplifier — 200–240V / 49A / 11kW Spindle / FSSB

Three Servo Axes and Spindle in One Module

The A06B-6134 series is FANUC's Beta i SVSP — Servo Spindle Packaged — family. "Packaged" is the key word: this module integrates three independent servo axis amplifiers (L, M, N) and a complete spindle amplifier into a single housing. On a compact CNC lathe or small machining centre, this replaces what would otherwise be four separate drive modules with a single unit, simplifying the drive cabinet, reducing the DC bus connection count, and cutting the number of FSSB fibre cable runs to the CNC.

The BiSVSP 20/20/40-11 designation encodes the current and power ratings across all four drive channels, with the 11 kW spindle amplifier handling the machine's spindle motor. With its built-in power supply and regeneration capability, the unit returns motor deceleration energy to the supply — an energy efficiency benefit on machines with frequent spindle and axis stop cycles.

The A06B-6134-H302 is designed for small to medium CNC machine tools: compact lathes, drill-tap centres, and simple machining centres where the machine's complete drive system fits into a single packaged unit. For larger machines with higher-current axis requirements, the Alpha i SVM/SPM separate module architecture is the appropriate platform.

Key Specifications

#A and #C Suffix — Confirm Before Ordering

The A06B-6134-H302 is produced in two software variants: #A (Type A) and #C (Type C). These differ in internal software configuration and are not interchangeable. The installed module's label shows the full part number including the suffix — confirm whether the machine has the #A or #C variant and specify accordingly. Fitting the wrong suffix produces incorrect drive behaviour or failure to initialise at startup.

Gravity-Axis Drop Prevention and Cs Contouring

Two operational features of the A06B-6134 series are worth noting for machine tool users:

Gravity-axis drop prevention: The module includes a built-in power failure detection circuit that activates motor braking rapidly when supply loss is detected, protecting tooling and workpieces on gravity-loaded axes without relying on external brake logic.

Cs contouring control: For spindle axis contour control functions (used on multi-function turning centres), the module supports the αi BZ sensor in addition to the αi Position Coder for Cs axis operation.

FAQ

Q1: What does SVSP mean and how is this different from a standard SVM module?

SVSP stands for Servo Spindle Packaged — a single module integrating both servo axis control (L, M, N axes) and spindle control. A standard SVM (Servo Motor Module) handles servo axes only and requires a separate SPM (Spindle Motor Module) for the spindle drive. The SVSP format is designed for compact CNC machines where combining all drives into one unit reduces cabinet space, cabling, and component count.

Q2: What happens if #A is installed where #C is required?

The software variants differ in servo and spindle control parameter sets, communication protocols, and initialisation sequences. Installing the wrong variant causes the drive to fail its startup check or behave incorrectly. Always confirm the full part number including the suffix from the installed unit's label before ordering.

Q3: The module shows an alarm at startup. How is the fault identified?

The A06B-6134 series carries two LED status indicators on the front face. LED codes at startup identify whether the fault is in the servo section, spindle section, or communication interface. Refer to the FANUC βi Series Servo/Spindle Amplifier Maintenance Manual for the LED code definitions. All four drive channels (L, M, N servo + spindle) alarming simultaneously at startup typically indicates an FSSB communication issue or a power supply fault rather than an individual axis component failure.

Q4: Can a different A06B-6134 variant (e.g., H301 or H303) substitute for the H302?

Different H-suffix variants in the A06B-6134 series carry different current ratings and power configurations. The H302 (BiSVSP 20/20/40-11) cannot be substituted by H301 or H303 without verifying that the replacement's servo axis current ratings and spindle power match the original motor specifications. Check the original module's ratings and the motor name plates before accepting a substitute suffix.

Q5: Does the A06B-6134-H302 require a separate PSM power supply module?

No. The Beta i SVSP series includes its own built-in AC-to-DC conversion with regenerative capability — it connects directly to the 200–240V AC three-phase supply without requiring a separate PSM (Power Supply Module). This self-contained architecture is one of the key advantages of the SVSP format for compact machine installations.