FANUC α i-B/β i-B series servo system

FANUC α i-B/β i-B series servo system

The FANUC α i-B and β i-B series servo systems are high-performance, high-precision, and high-efficiency intelligent servo systems launched by Fanuc Corporation, aimed at achieving high performance, compactness, and energy efficiency in machine tools. The system consists of an AC servo motor, an AC spindle motor, and a servo amplifier. Through advanced nano control technology and HRV control algorithm, it provides excellent dynamic response and machining accuracy for various CNC machine tools.

The α i-B series is positioned as a high-performance servo system, suitable for high-power and high torque applications such as large machine tools, presses, injection molding machines, etc; The β i-B series provides sufficient performance and cost-effectiveness to meet the machining needs of general machine tools. Both series offer 200V and 400V input voltage options to adapt to power supply standards in different regions.

Communication servo motor: the power core of the feed axis

2.1 α i-B series high-performance servo motor

The α i-B series servo motor is designed to meet the requirements of high-precision and high-efficiency machining:

Excellent processing performance:

Adopting an ultra-high resolution pulse encoder of 32000000/rev, combined with a special magnetic pole shape to minimize torque ripple, and the latest HRV+servo control, extremely smooth motor rotation is achieved, achieving high-precision and high-quality surface processing.

Through the "multi amplifier drive technology", a single axis can achieve a high torque of up to 18000Nm and a high power output of 500kW.

By utilizing 'multi motor drive technology', the single axis output capability is further enhanced, making it suitable for heavy-duty applications such as large machine tools, presses, and injection molding machines.

Minimize downtime: Adopting Fanuc's unique sealing structure, it provides excellent waterproof performance, with an optional IP67 waterproof rating to adapt to harsh cutting fluid environments.

Usability:

Optional battery free pulse encoder, no need to backup battery.

Adopting a one click connector for easy insertion and removal of power connectors.

Optional back clearance reducing brake.

2.2 β i-B series cost-effective servo motor

The β i-B series servo motor provides higher cost-effectiveness while ensuring sufficient performance:

Equipped with a 1000000/rev pulse encoder, combined with special magnetic pole shapes and HRV+control, to achieve smooth motor rotation.

The unique sealing structure of Fanuc is also adopted, with an optional IP67 waterproof rating.

We offer multiple models of 200V and 400V, with optional battery free pulse encoders and support for one click connectors.

Communication Spindle Motor: Efficient Solution for Main Drive

3.1 α i-B series high-performance spindle motor

The α i-B series spindle motor achieves high speed and fast acceleration and deceleration through optimized winding design and effective cooling structure:

Short time rated output: By increasing the short-term rated output and torque, the short-term heavy cutting capability is improved and the acceleration and deceleration time is shortened. Fanuc's unique spindle control ensures that S6's short-term rated output is equivalent to S3.

Diversified models: Provide hollow shaft models with center water cooling (suitable for center coolant), including air-cooled i-B series and liquid cooled i-B series.

High power output: Through "multi amplifier drive technology", the maximum output power can reach 200kW and the maximum torque can reach 2000Nm. The output can be further improved through "multi motor drive technology".

Special model: Provides synchronous spindle motors suitable for frequent and rapid acceleration and deceleration, as well as spindle motors suitable for lathes that can withstand larger radial loads.

3.2 β i-B series cost-effective spindle motor

The β i-B series spindle motor provides high power and torque in a compact size, suitable for general machine tools:

Optimized winding design and cooling structure to achieve high power density.

By increasing the short-term rated output and torque, the short-term heavy cutting capability is improved and the acceleration and deceleration time is shortened.

Provide a hollow shaft model with central water cooling, which has sufficient mechanical accuracy and low vibration, and can be directly connected to the machine tool spindle.

Servo amplifier: the core of intelligent driving

4.1 α i-B series high-performance servo amplifier

The α i-B series servo amplifier offers a wide range of options from small to large capacity:

Processing performance: Adopting high-power, high-precision current control to achieve short-term processing and high-precision, high-quality processing.

Minimize downtime:

Built in leakage detection function can detect insulation degradation of motors in harsh coolant environments.

The fan motor can be easily replaced from the front.

The troubleshooting function helps quickly identify the cause of the alarm.

Usability:

By using the safety torque shutdown function, the electromagnetic contactor used for cutting off external power can be eliminated.

Adopting the latest low loss power devices to further achieve energy conservation.

Provide 200V and 400V input models.

4.2 α iSP-B series integrated servo amplifier

The α iSP-B series is an economical and efficient integrated servo amplifier that combines servo function with spindle function for simple wiring. It also has the characteristics of high power, high-precision current control, easy replacement of fans, safe torque shutdown function, and low loss power devices.

Core technology: Achieving nanoscale control

5.1 SERVO HRV Control

By combining the latest hardware and software technologies such as HRV+servo control, high-speed and high-precision control at the nanoscale can be achieved. Even if the mechanical resonance frequency changes, the HRV filter can automatically follow and suppress the mechanical resonance.

5.2 SPINDLE HRV Control

By quickly sampling the current control loop, high gain control and low heat generation during high-speed rotation can be achieved. Based on the inertia of the workpiece or tool, use the optimal deceleration level for optimal orientation. Support nano interpolation in position control, enabling the spindle to achieve nano CNC system like a feed axis.

5.3 Servo Learning Control

Servo learning control can achieve high-speed and high-precision machining, especially when used in conjunction with linear motors. By combining high-precision linear motors with servo learning control, it is possible to achieve shorter machining cycles for non spherical workpieces through turning rather than milling.

5.4 AI servo adjustment

AI feedforward is a high-dimensional feedforward control that can accurately describe the characteristics of machine tools. Applying machine learning to parameter decision-making processes can easily achieve advanced feedforward control. This function can suppress low-frequency vibrations during acceleration and deceleration, which helps achieve fine surface processing.

Intelligent maintenance and fault diagnosis

6.1 Fault prediction function

Leakage detection function: measure the insulation resistance of the motor and detect insulation degradation.

Capacitor inspection function: Measure the capacitance of the main circuit of the servo amplifier and detect the decrease in capacitance.

Fan motor speed detection function: measure the servo amplifier fan motor speed and detect the decrease in speed.

Brake inspection function: measure the status of the brake and detect brake faults.

6.2 Easy to maintain design

Fan quick replacement: The fan can be easily replaced from the front without removing the amplifier from the electrical control cabinet, shortening maintenance time.

One click connector: The power and signal connectors of the servo motor can be installed and removed with one click, reducing motor maintenance time and improving the reliability of replacement work.

6.3 Fault diagnosis function

Cooperate with 30i-B series CNC and 0i-F series CNC to provide fault diagnosis function:

Fault diagnosis guide screen: According to the fault diagnosis process, help identify the cause of the alarm.

Fault diagnosis monitoring screen: monitors the servo circuit and spindle status during normal operation, and can latch data when an alarm occurs.

Fault diagnosis graphic screen: displays the waveform observed when a servo or spindle alarm occurs.

6.4 Encoder Communication Inspection Circuit

When a communication alarm occurs in the encoder, the fault source may involve three parts: the encoder, feedback cable, and servo amplifier. The encoder communication inspection circuit can output signals compatible with the encoder, helping to quickly identify faulty components and shorten downtime.