Description:
The YASKAWA CACR-SR07BE12M is a high-performance, 7.0 kW servo drive (Servopack) from the acclaimed Sigma-7 series. Designed for three-phase 200-230V AC input, it provides precise, powerful, and efficient control of associated Yaskawa servo motors, forming the core of advanced motion control systems in demanding industrial automation.
Application Scenarios:
In a high-speed packaging line, a robotic gantry is tasked with accurately picking and placing fragile items onto a moving conveyor. The synchronization, acceleration, and positional accuracy required are extreme. The YASKAWA CACR-SR07BE12M servo drive is the unit that translates the controller’s high-level commands into the exact current and voltage needed by the servo motor. Utilizing its advanced auto-tuning and vibration suppression algorithms, the CACR-SR07BE12M dynamically adjusts to the changing load as the robot arm extends, ensuring smooth, swift, and shock-free movements. This prevents product damage and maintains a blistering cycle time, showcasing how the drive’s responsiveness and stability are critical for productivity in precision automation.
Technical Principles and Innovative Values:
The YASKAWA CACR-SR07BE12M is engineered around delivering exceptional motion quality, responsiveness, and energy efficiency through its sophisticated digital control architecture.
Innovation Point 1: Advanced Vibration Suppression Control II. This proprietary algorithm is a core differentiator. It actively identifies and compensates for mechanical vibration frequencies within the system (e.g., from long arms, belts, or compliant couplings). This results in dramatically reduced settling time after moves, enabling higher throughput and improved positioning accuracy, which is critical for applications like chip mounting or precision machining.
Innovation Point 2: High-Performance Auto-Tuning. The drive features multiple auto-tuning modes. The “Advanced Auto-Tuning” mode automatically identifies the mechanical load inertia and optimally sets the servo gains (position loop, speed loop, filter) for robust and stable operation. This eliminates the need for complex manual tuning, significantly reducing commissioning time and ensuring optimal performance even for less experienced engineers.
Innovation Point 3: Energy Efficiency and Dynamic Brake. The CACR-SR07BE12M incorporates a high-efficiency power design that minimizes heat loss. Its integrated dynamic brake function enhances safety by quickly stopping the motor in the event of a fault or emergency stop condition. The management of regenerative energy is crucial; the drive efficiently handles this energy, dissipating it through an external regenerative resistor to protect the unit during frequent deceleration.
Application Cases and Industry Value:
Case Study: Precision Gear Hobbing Machine Retrofit
A manufacturer of precision automotive gears was facing limitations with an older hydraulic-driven hobbing machine. The challenges included inconsistent surface finish, limited flexibility for different gear profiles, and high energy consumption. A retrofit was planned, replacing the hydraulic axis with a direct-drive servo system.
The solution centered on a YASKAWA CACR-SR07BE12M drive controlling a high-torque Sigma-7 servo motor for the rotary table (C-axis). The drive’s precise position control and stiffness were critical. The Advanced Vibration Suppression feature was key to dampening vibrations induced by the cutting tool, resulting in a mirror-like surface finish on the gear teeth. The auto-tuning quickly optimized the system for the massive inertia of the rotary table and workpiece. Post-retrofit, the machine achieved a 40% reduction in cycle time due to faster, more accurate indexing, a 60% reduction in energy use, and a significant improvement in part quality that reduced downstream grinding. The project lead stated, “The CACR-SR07BE12M delivered the stiffness and smoothness we needed. The setup was surprisingly straightforward with auto-tuning, and the finish quality has eliminated a secondary operation for many parts.”
Related Product Combination Solutions:
YASKAWA Σ-7 Servo Motors (e.g., SGM7G series): The perfectly matched motors for the CACR-SR07BE12M, with compatible feedback and optimized performance.
YASKAWA Regenerative Resistor (e.g., SGR-050/100): An external resistor required to dissipate regenerative energy generated during motor deceleration, protecting the drive.
YASKAWA JUSP-RA05 Cable: Pre-engineered, shielded motor power cable for connecting the drive to the servo motor.
YASKAWA Communication Option Cards (e.g., CACR-MR23BE): Adds specific network connectivity like MECHATROLINK-III to the CACR-SR07BE12M.
YASKAWA SigmaWin+ Configuration Software: PC-based tool for parameter setup, tuning, diagnosis, and oscilloscope functionality for the drive.
YASKAWA Motion Controller (e.g., MP3000 series): A high-level multi-axis motion controller that can command the CACR-SR07BE12M via a fieldbus network for complex coordinated motion.
Dynamic Brake Unit: Additional safety unit that works in conjunction with the drive’s internal brake circuitry for emergency stopping.
Installation, Maintenance, and Full-Cycle Support:
Proper installation is critical. The YASKAWA CACR-SR07BE12M must be mounted vertically on a clear, grounded metal panel to ensure adequate cooling via convection. Input power (3-phase 200-230V AC), motor connections (U, V, W, Ground), and encoder feedback must be wired precisely according to the manual using recommended cable types. The connection of an appropriately sized external regenerative resistor is mandatory for most applications to prevent drive fault from overvoltage. Initial setup involves configuring basic parameters (control mode, feedback type) via the front keypad or software, followed by running the auto-tuning function.
Routine maintenance involves keeping the drive’s heat sinks clean and free of dust, checking terminal tightness during planned outages, and ensuring cooling fan operation (if equipped). The drive provides extensive diagnostic capabilities through fault codes and status parameters accessible on the display or via software. Common troubleshooting involves checking error codes, verifying input voltage, and inspecting motor/encoder cables for damage. For module-level failures, board swap or unit replacement by qualified personnel is typical.
We provide comprehensive support for the YASKAWA CACR-SR07BE12M, from initial sizing and selection to commissioning assistance and spare parts. We supply genuine Yaskawa products and can assist with system integration, tuning optimization, and troubleshooting to ensure your motion application achieves its peak performance and reliability.
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