FANUC α i-B/β i-B series servo system

FANUC α i-B/β i-B series servo system

Overview of Product System

The FANUC α i-B/β i-B series servo system covers all scenario requirements with a dual line product of "high performance+high cost-effectiveness". The core includes four categories of products, all of which support 200V/400V dual voltage input and are compatible with different regional power supply standards:

Product category series division, core positioning, key differences

AC servo motor @ * S-B/@ * F-B (high-performance) high-end precision equipment, such as large machine tools and press machines, with a resolution of 32 million/4 million rev and a torque of 18000Nm, supporting multi motor drive

AC servo motor # * S-B/# * F-B (cost-effective) universal industrial equipment, basic precision requirement resolution of 1 million rev, compact design, cost optimization

AC spindle motor @ * I-B/@ * S-B and other (high-performance) high-speed heavy cutting machine tools, such as machining centers with a power of 200kW and a torque of 2000Nm, supported by hollow shaft coolant

AC spindle motor # * I-B/# * IT-B and other (cost-effective) universal cutting machine tools, such as ordinary lathes, are compact and energy-saving, meeting the short-term rated output requirements of S6

Servo amplifier @ * SV-B/@ * SP-B and other (multifunctional) complex multi axis drives, with multiple capacity options for large equipment, supporting multi amplifier/multi motor drives

Servo amplifier # * SVSP-B (integrated) small and medium-sized equipment, simplifies design, integrates servo+spindle functions, reduces wiring

Detailed features of core products

(1) AC servo motor (feed axis drive)

Performance parameters:

Resolution: The high-performance series offers 3200000/rev or 4000000/rev, while the cost-effective series offers 1000000/rev;

Power and torque: The high-performance series has a maximum power of 500kW and a torque of 18000Nm, supporting "multi amplifier drive" and "multi motor drive" technology for extended output;

Control accuracy: The special magnetic pole shape reduces torque fluctuations, coupled with SERVO HRV+control, achieves smooth rotation and high-precision machining.

Reliability design:

Protection level: optional IP67 waterproof, unique sealing structure to resist cutting fluid erosion;

Encoder: Supports Battery less Pulsecoder, eliminating the need for battery backup and reducing maintenance costs.

Usability design:

Connection: One click power connector, quick plugging and easy replacement;

Optional function: Backlash reduction braking, adapted to high-precision positioning requirements.

(2) AC spindle motor (spindle drive)

Performance parameters:

Power and torque: The high-performance series has a maximum power of 200kW and a torque of 2000Nm. The short-term rated output (S6) is equivalent to the continuous rated output (S3);

Speed characteristics: optimized winding design+efficient cooling, achieving high-speed rotation and rapid acceleration and deceleration, synchronous spindle motor adapted to high-frequency start stop scenarios;

Special models: Hollow shaft models (α iIT-B air-cooled/α iIL-B liquid cooled) support central coolant, while lathe specific models enhance radial load tolerance.

Reliability design:

Protection: Oil sealed structure, waterproof and resistant to cutting fluid erosion;

Mechanical accuracy: Low vibration design, supports direct connection with machine tool spindle.

Usability design:

Installation: After coupling the motor with the spindle, the spindle balance connection can be made at the rear of the motor to simplify debugging.

(3) Servo amplifier

Core functions:

Control capability: high-precision current control, supporting short-term heavy cutting and nanoscale machining;

Safety function: Integrated Safe Torque Off (STO) function, which eliminates the need for external electromagnetic contactors;

Scalability: The multifunctional series supports multiple motor/amplifier drivers and is suitable for large equipment.

Reliability design:

Fault detection: Built in leak detection function to monitor motor insulation degradation;

Energy saving: adopting the latest low loss power devices to reduce energy consumption;

Maintenance: The front side of the fan motor can be easily replaced without disassembling the amplifier.

Integrated advantages:

#*The SVSP-B series integrates servo and spindle drive functions, greatly simplifying wiring and reducing installation costs.

(4) Supporting module: Power off backup module (MODEL B)

Core function: To protect equipment and workpieces from damage in unstable power supply scenarios;

Key functions: ① Gravity axis drop prevention (standard α iPS-B quickly activates motor braking through power-off detection); ② Deceleration stop (high-speed machine tool feed axis deceleration stop to prevent collision); ③ Tool retraction (synchronous retraction of tools and workpieces in gear machining machines);

Model options: PFB-24, PFB-R, PFB-C+capacitor module.

Core technology and intelligent functions

(1) High precision control technology

SERVO HRV+: a servo control technology that combines hardware and software to achieve nanometer level positioning accuracy. The HRV filter that automatically tracks frequency changes suppresses mechanical resonance and achieves a cutting feed smoothness of 0.2 μ m;

SPINDLE HRV: Fast sampling of current control loop, achieving high gain control and low heat generation during high-speed rotation, supporting spindle nano interpolation, and cooperating with feed axis to achieve nano CNC control;

Servo Learning Control: Used in conjunction with linear motors, turning non cylindrical parts (such as pistons and non spherical lenses) instead of milling shortens the cycle with an error of ≤ 2 μ m.

(2) Intelligent optimization function

Function Name Core Function Application Effect

Intelligent thermal control monitors temperature changes in real-time, dynamically optimizes control to avoid overheating, and stabilizes machining accuracy

Intelligent adaptive control adjusts parameters based on load, temperature, and other working conditions to adapt to complex machining scenarios, improving consistency

Intelligent backlight compensation improves positioning accuracy and reduces errors by compensating for transmission clearance

AI Feedforward machine learning optimizes parameters, suppresses low-frequency vibration, ensures smooth acceleration and deceleration processes, and improves workpiece surface quality

Intelligent spindle acceleration and deceleration adjusts the deceleration level based on the inertia of the workpiece/tool to optimize the positioning time. The positioning of large inertial workpieces is only 540ms

(3) Tuning tool: FANUC SERVO GUIDE

Core functions: Integrated testing program generation, parameter setting, data measurement, supporting 3D view of 5-axis machining path deviation;

Advantage features: ① Deviation amplification+color coded display, intuitive positioning problem; ② Tune navigation to automatically optimize gain and filter; ③ Quadrant protrusion automatic tuning, single axis tuning time is only 10 minutes, greatly improving debugging efficiency.

Reliability and Maintenance Design

(1) Fault prevention and prediction

Fault prediction function: Monitor abnormal symptoms of motors, amplifiers, and fan motors to achieve preventive maintenance;

Special testing function: ① Leakage detection (motor insulation resistance monitoring); ② Capacitor inspection (monitoring of the capacitance of the amplifier main circuit); ③ Fan speed detection (amplifier fan speed monitoring); ④ Braking inspection (motor braking status monitoring).

(2) Easy to maintain design

Component replacement: The front side of the amplifier fan can be directly replaced without disassembling the amplifier;

Convenient connection: The servo motor power supply and signal adopt a one click connector, which can be quickly plugged in and out during maintenance, improving the reliability of replacement;

Fault diagnosis: Equipped with 30i MODEL B/0i MODEL F CNC, it provides a fault diagnosis guide, monitoring screen, waveform display, and quickly locates the cause of the alarm;

Encoder communication inspection circuit: Quickly distinguish the source of faults in encoders, feedback cables, and amplifiers to shorten downtime.

(3) Protection and Durability

Protection level: The servo motor can choose IP67 waterproof, and the spindle motor adopts an oil sealed design, both of which can withstand cutting fluid erosion;

Fan design: Molded fan motor (circuit board and winding resin packaging) to enhance cutting fluid resistance and avoid circuit board failures.