Fanuc A06B-6117-H302 | Alpha i 3-Axis Servo Amplifier Module SVM3-10/10/10i HRV
Product Identification
Part Number: A06B-6117-H302
Series: Alpha i (αi) Servo Amplifier Module
Model: SVM3-10/10/10i HRV
Configuration: Three-Axis -- L, M & N Axes
Condition: New / Refurbished / Exchange Available
Overview
The Fanuc A06B-6117-H302 is the smallest triple-axis servo amplifier in Fanuc's Alpha i (αi) servo drive range. This SVM3-10/10/10i HRV model drives three independent servo axes from a single compact module, rated at 283-339V input and 240V output at up to 3A per axis (L, M and N).
Occupying only 60mm cabinet width, it utilizes an internal heatsink with cooling fans instead of requiring rear-mounting heatsinks like larger modules. The HRV designation indicates Fanuc's High Response Vector control algorithm, delivering faster torque response and tighter velocity control compared to earlier Alpha series drives.
Since its introduction around 2005, the A06B-6117-H302 has established a substantial installed base across small-to-medium machining centers, turning centers, and multi-axis production machines requiring three-axis drive capability from a single amplifier slot.
Technical Specifications
| Parameter |
Value |
| Part Number |
A06B-6117-H302 |
| Model |
SVM3-10/10/10i HRV |
| Axis Count |
3 (L, M & N Axes) |
| Input Voltage |
283-339V |
| Output Voltage |
240V |
| Continuous Output Current |
3A per axis |
| Total Power |
1.5 kW |
| Cabinet Width |
60 mm |
| Cooling |
Internal Heatsink + Fans |
| Control Algorithm |
HRV (High Response Vector) |
| Transistor Modules |
3 × 600V / 20A |
| Power PCB |
A16B-2203-0696 |
| Control PCB |
A20B-2101-004x (HRV capable) |
| Compatible Motors |
αi2/5000 through αi4/3000i AC Servo |
| Compatible Controls |
Fanuc Series 0i-C/D and related |
| Series |
Alpha i (αi) -- A06B-6117 |
Compact Three-Axis Design Benefits
The SVM3-10/10/10i represents the entry-level triple-axis module in the αi servo amplifier family. Its 60mm cabinet width consolidates what would otherwise be three separate single-axis amplifiers into a single unit with shared power supply input, shared bus capacitance, and simplified maintenance.
This compact form factor provides significant advantages in machines with limited cabinet space, particularly when handling X, Y, and Z feed drives that perform most positioning work. The 10/10/10 rating indicates 10-unit current class on each axis, suitable for smaller Alpha i servo motors in the αi2 and αi4 families with moderate cutting loads and inertia requirements.
HRV Control Performance Advantages
HRV (High Response Vector) control architecture represents a significant advancement over earlier Alpha series drives. This technology utilizes higher-frequency current sampling and sophisticated vector algorithms to deliver:
- Faster torque response for improved dynamic performance
- Reduced velocity ripple at low speeds for smoother operation
- Enhanced disturbance rejection during cutting operations
For machine operators, these improvements translate to smoother axis motion during finish passes, better circular interpolation accuracy at low speeds, and quicker recovery from cutting force disturbances. The A20B-2101-004x control PCB specifically enables this HRV capability.
System Integration Architecture
The A06B-6117-H302 operates as part of a complete Fanuc αi drive system, powered by a separate PSM (Power Supply Module) that provides rectified DC bus voltage. One or two PSM units supply the shared DC bus feeding all servo and spindle amplifier modules in the drive stack.
The input voltage specification (283-339V) refers to the DC bus voltage from the PSM, not direct AC mains connection. SSCNET III fibre-optic connections from the CNC control carry servo command and feedback data for all axes, with modules daisy-chained via short fibre links to form a high-speed serial network.
Service Life and Maintenance Considerations
Fanuc Alpha i drives are engineered for extended service life, with many A06B-6117-H302 units remaining in daily production since 2005. Common failure modes include:
- Cooling fan failure leading to overtemperature conditions
- Transistor module degradation from sustained overcurrent events
- Control PCB faults from power transients or extended service hours
Preventive maintenance focusing on fan inspection and replacement can significantly extend service life. For production-critical machines, maintaining an exchange unit or establishing relationships with repair specialists provides the fastest path to restoration following module failure.
Frequently Asked Questions
Q1: Can the A06B-6117-H302 operate independently, or does it need other modules?
The module requires a Fanuc PSM (Power Supply Module) to provide DC bus voltage and SSCNET III fibre-optic connection to the Fanuc CNC control. It cannot operate as a standalone drive and functions as a component within a complete Fanuc αi servo system.
Q2: What happens to all three axes if the A06B-6117-H302 faults?
A module-level fault disables all three axes (L, M, and N) simultaneously, typically resulting in complete machine shutdown. This consolidated design provides space savings but requires maintaining tested spares or exchange arrangements for critical production machines.
Q3: What servo motors is this module designed to drive?
The SVM3-10/10/10i is rated for smaller Alpha i servo motors, typically αi2/5000 through αi4/3000i class. The 10-unit current rating per axis sets the upper bound on motor size compatibility.
Q4: What does HRV mean, and does it matter when sourcing a replacement module?
HRV (High Response Vector) refers to the advanced current control algorithm that provides superior performance. When sourcing replacements, verify the module carries the HRV-capable control PCB (A20B-2101-004x) to maintain consistent servo performance and avoid potential tuning issues.
Q5: How can I tell if the A06B-6117-H302 is the faulty component or if the problem is elsewhere in the drive system?
Before concluding the servo module is faulty, verify PSM DC bus voltage output and inspect SSCNET fibre connections. Specific alarm codes displayed on the Fanuc CNC operator panel provide the most useful diagnostic starting point, mapping to specific drive and motor fault categories.
![A06B-6117-H302 Fanuc Servo Amplifier A06B6117H302 Servo Dri
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