Product Core Brief

• Model: A06B-6079-H208
• Brand: Fanuc
• Series: βi SVSP (Servo Spindle) Series
• Core Function: Highly integrated amplifier module that simultaneously drives one spindle motor and up to two servo axes, saving cabinet space and simplifying wiring.
• Product Type: Servo/Spindle Integrated Amplifier
• Key Specs: Spindle Output ~15-18.5 kW | Input 200-240V/380-480V AC | Dual Servo + Spindle
• Condition: New Surplus / OEM Original

Key Technical Specifications

• Module Type: βi SVSP Servo/Spindle Integrated Amplifier
• Part Number:
• Spindle Channel Power: Typically 15 kW or 18.5 kW (Verify via physical nameplate)
• Servo Channels: 2 Independent Servo Axes
• Input Voltage: 200V ~ 240V AC, 3-Phase (380V-480V variants exist, check label)
• Input Frequency: 50/60 Hz
• System Compatibility: Fanuc Series 0i-F, 30i, 31i, 32i CNC Systems
• Control Features: Rigid Tapping, Spindle Orientation, High-Precision Position Control
• Operating Temperature: 0°C to 40°C (Cabinet ambient)
• Physical Dimensions: Approx. 200mm × 200mm × 200mm (Form factor varies by exact revision)

 

Product Introduction

nuc is a cornerstone of modern compact CNC architecture, belonging to the βi SVSP family. Its defining feature is the integration of spindle and servo drives into a single unit. Instead of requiring separate amplifiers for the spindle and two feed axes, this module handles all three, significantly reducing control cabinet footprint, wiring complexity, and overall system cost.

Engineered for high-precision machining, it supports advanced functions like rigid tapping and precise spindle orientation, making it ideal for CNC lathes, machining centers, and automated production lines. The amplifier communicates seamlessly with Fanuc CNC systems, utilizing advanced control algorithms to ensure stable torque output, rapid acceleration, and micron-level positioning accuracy even under heavy cutting loads.

 

QA & Testing SOP

Integrated amplifiers contain both high-power spindle stages and precision servo logic. We verify both domains before release.

1. Anti-Counterfeit & Visual Audit: We inspect the Fanuc labe part number, and check all power terminals, motor connectors, and fiber optic ports for physical damage or corrosion.
2. DC Bus & Power Stage Test: We apply input power and verify the internal DC bus charges to the correct voltage, testing the IGBT modules for short circuits or leakage.
3. Spindle & Servo Logic Validation: Using a Fanuc test controller, we verify the amplifier correctly enumerates, accepts spindle speed commands, and responds to servo position loops.
4. Cooling Fan Check: We verify the internal cooling fan operates at the correct RPM and triggers the “Fan Stop” alarm logic when obstructed.
5. ESD Safe Packaging: The sensitive servo control ASICs are highly ESD sensitive. We pack in anti-static shielding with desiccant to prevent latent semiconductor damage.

Installation Pitfalls & Guide

❗ Parameter Initialization: This is an integrated module. After installation or replacement, you must initialize both the spindle parameters (e.g., #4133 Spindle Motor Code, #4056-4059 Gear Ratio) and the servo parameters (e.g., #1020 Axis Name, Motor Code) in the CNC. Failure to do so will cause “Parameter Error” (Alarm 417) or uncontrolled motion.

❗ Heat Dissipation: The SVSP module generates significant heat from both the spindle and servo sections. Ensure the control cabinet has adequate airflow. Never block the intake/exhaust vents. Ambient temperature must not exceed 40°C; otherwise, thermal derating or shutdown will occur.

❗ Wiring Separation: Keep the high-current spindle motor cables physically separated from the low-voltage servo feedback and encoder cables. Inductive noise from the spindle can corrupt servo position signals, causing “Pulse Encoder Error” (Alarm 361/381) or “Feedback Mismatch” (Alarm 448).

❗ Grounding: The amplifier chassis must be grounded to the CNC system ground with a thick, short copper strap. Poor grounding causes erratic alarms, communication errors, and potential damage to the IPM module.

Replacement SOP:

1. Pre-Install: Record all spindle and servo parameters from the old amplifier or CNC backup; power down and lock out the main input.
2. Removal: Disconnect spindle motor, servo motors, encoder cables, and control bus; remove mounting screws and extract the module.
3. Install: ; reconnect all power and feedback cables; verify fiber optic bus connection is secure.
4. Power-On Test: Apply control power first; verify no immediate alarms; apply main power; initialize parameters if prompted; run a low-speed spindle test and servo jog test before removing bypass.

 

Technical FAQ

What does “SVSP” stand for?
SVSP stands for Servo Spindle. It indicates that the amplifier is a hybrid unit capable of driving both a spindle motor (for rotation/torque) and standard servo motors (for linear axis positioning) within the same physical housing.

Can I use this amplifier for just a spindle without servos?
Yes. The servo channels can be disabled or left unconnected if your machine configuration only requires spindle drive. However, the internal power supply is still sized for the integrated load, so ensure your input breaker is rated correctly for the full module capacity.

What are the most common alarms for this model?

• Alarm 430/436: Servo/Spindle Overheat (Check cooling fan, load, or ambient temp).
• Alarm 449: IPM Alarm (Internal power module fault, often due to shorted motor cable or IGBT failure).
• Alarm 361/381: Pulse Encoder Phase Error (Check encoder cable, shielding, or motor feedback).
• Alarm 417: Parameter Error (Incorrect motor code or gear ratio settings).

Is this compatible with older Fanuc 0i-C or 0i-D systems?
Generally, no. The βi SVSP series is designed for newer platforms like 0i-F, 30i, 31i, and 32i. Older systems typically use the αi or β series amplifiers with different bus architectures. Always verify your CNC system generation before purchasing.

Why is this sold as new surplus?
This unit was pulled from sealed OEM overstock or an unfulfilled machine build project before installation. We test it on our Fanuc test benches to verify power stage and logic functionality, but we aren’t replacing internal components. You are getting unused factory hardware with original manufacturing tolerances at a fraction of the active OEM list price.