YASKAWA CACR-SR07BE12M

Description

Product Description

The YASKAWA CACR-SR07BE12M is a high-performance Single-Axis Servo Drive from Yaskawa’s extensive Sigma series. This specific drive, the YASKAWA CACR-SR07BE12M, is designed to control and power a single AC servo motor, providing precise torque, speed, and position control for demanding motion applications. Its primary function is to convert incoming three-phase AC power into the controlled, high-frequency AC power required by the servo motor, while simultaneously processing feedback from the motor’s encoder to form a closed-loop control system. The robust and compact design of the YASKAWA CACR-SR07BE12M makes it suitable for integration into machinery and automated systems requiring high dynamic response and accuracy.

Product Parameters

The technical specifications for the YASKAWA CACR-SR07BE12M servo drive are defined by its power and control capabilities:

• Drive Type: Single-Axis, Digital AC Servo Drive (Sigma Series).

• Rated Output: “SR07” indicates a specific power rating, often 0.75 kW (1.0 HP). The exact current rating (e.g., 5.0 A) is specified in the datasheet.

• Input Power: Three-phase AC input, typically 200-230V AC, 50/60 Hz. Some models support single-phase input.

• Control Modes: Supports multiple control modes including Torque Control, Speed Control, and Position Control (via pulse train input).

• Feedback System: Compatible with high-resolution incremental encoders (standard on Sigma motors) for precise position and speed feedback.

• Communication Interfaces: Features built-in interfaces such as:

  • Pulse train input for position command.

  • Analog voltage input (±10V) for speed/torque command.

  • Digital I/O for control signals (Servo ON, Alarm Reset, etc.).

  • Optional fieldbus communication cards (e.g., PROFIBUS, DeviceNet) can be added.

• Protection Functions: Comprehensive protection including overcurrent, overload, overvoltage, undervoltage, and overheating protection.

• Regenerative Braking: Includes a built-in regenerative resistor or a connection for an external resistor to dissipate energy during deceleration.

Advantages and Features

The YASKAWA CACR-SR07BE12M offers significant advantages for precision motion control:

• High Performance and Fast Response: The YASKAWA CACR-SR07BE12M delivers high-speed processing and advanced control algorithms, resulting in excellent dynamic response, high stiffness, and precise positioning, which is critical for high-speed pick-and-place or contouring applications.

• Ease of Use and Tuning: Features auto-tuning functions that automatically set gain parameters based on the connected motor and load inertia, significantly reducing commissioning time and simplifying setup for engineers.

• High Reliability and Robustness: Yaskawa drives are renowned for their industrial durability, with robust construction and protection features that ensure reliable operation in demanding manufacturing environments with electrical noise and vibration.

• Flexible Integration: The drive supports multiple command sources (pulse, analog, fieldbus), making it adaptable to various control architectures, from simple standalone setups to complex networked systems with PLCs.

• Efficient Regeneration Handling: Effective management of regenerative energy protects the drive and bus system, allowing for high-cycle applications with frequent starts and stops.

Application Cases in Industry

This servo drive is widely used in a variety of automated machinery:

• Semiconductor & Electronics Manufacturing: Controls high-speed gantry robots for wafer handling, die bonding, and PCB assembly where precision and speed are paramount.

• Packaging Machinery: Drives servo motors on form-fill-seal machines, cartoners, and labeling equipment for accurate product positioning and synchronized motion.

• Machine Tools: Provides precise axis control for CNC milling machines, lathes, or EDM machines for contouring and high-speed machining.

• Robotics: Acts as the axis drive for articulated robot arms in material handling, welding, and assembly robots.

• Printing and Converting: Controls registration and tension in web-fed printing presses and converting equipment.

Comparisons with Competing Products

When compared to variable frequency drives (VFDs) or servo drives from other manufacturers, the YASKAWA CACR-SR07BE12M demonstrates specific strengths:

• Precision Motion vs. General Speed Control: Unlike a VFD designed for simple speed control of induction motors, the YASKAWA CACR-SR07BE12M is optimized for precise torque, speed, and position control of permanent magnet servo motors, offering superior bandwidth and accuracy.

• Ease of Tuning vs. Manual Optimization: Yaskawa’s auto-tuning capability is often more robust and user-friendly than the manual parameter tuning required by some competitive servo drives, leading to faster and more reliable commissioning.

• System Integration with Yaskawa Motors: When paired with a compatible Sigma servo motor, the CACR-SR07BE12M offers plug-and-play compatibility and optimized performance, as the drive’s parameters are pre-configured for the motor’s characteristics.

• Global Support and Availability: As part of Yaskawa’s globally established Sigma series, it benefits from extensive documentation, training, and local technical support, which may be more accessible than for some niche or newer brands.

Selection Suggestions and Precautions

Correct selection and setup are crucial for optimal performance and safety:

1. Match Drive to Motor Power and Model: The YASKAWA CACR-SR07BE12M must be correctly sized for the continuous and peak current of the specific Sigma series servo motor (e.g., SGM7J-??). Undersizing will lead to faults; oversizing is inefficient.

2. Properly Size the Regenerative Resistor: Based on the load inertia and duty cycle, calculate the required regenerative energy dissipation. Use the built-in resistor if sufficient, or correctly select and wire an external regenerative resistor as per the manual to prevent overvoltage faults.

3. Configure Control Mode and Inputs Correctly: Set the drive parameters (via keypad or software) to match the desired control mode (Position, Speed, Torque) and correctly wire the command source (pulse generator, analog source, or fieldbus master).

4. Ensure Adequate Wiring and Grounding: Use shielded cables for power, motor, and encoder connections. Ground the shield properly at the drive end to minimize electrical noise. Follow torque specifications for power terminals.

5. Perform Auto-Tuning and Fine-Tuning: After installation, run the drive’s auto-tuning function with the actual mechanical load connected. For highly dynamic applications, fine-tune the gain parameters manually based on the system’s response to achieve optimal performance.

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