•• Core Function: Serves as the central processing unit for the Advant Controller AC 410F, executing process control logic and managing system communications.
CM772F: Product OverviewThe CM772F is the central processor module for ABB’s Advant Controller AC 410F, a key component of the Advant OCS (Open Control System) platform. This module functions as the computational core of the distributed control system, executing regulatory control algorithms, sequence logic, and advanced process control strategies. Installed in the AC 410F baseplate, the CM772F manages all controller operations, including scanning I/O modules, executing application programs, handling communication with operator stations, and interfacing with other controllers via the MasterBus 300 network.The module operates as part of a modular system architecture where it coordinates with other modules in the controller chassis, including I/O communication modules, power supply units, and communication interfaces. It runs the control application program developed with ABB’s Advant Station engineering tools, processing real-time data from field devices and executing control commands to maintain process variables within specified setpoints. The controller’s design focuses on reliability and deterministic performance for continuous process operations in demanding industrial environments.
ABB CM772F
CM772F: Technical Specifications
•• Model Number: CM772F
•• Manufacturer: ABB
•• Product Type: Controller Module (CPU)
•• Controller Family: Advant Controller AC 410F
•• Processor: 32-bit RISC processor
•• Memory: 4MB RAM for application program and data
•• Battery Backup: For memory retention during power loss
•• Communication Ports: MasterBus 300 interface
•• I/O Capacity: Supports extensive I/O configurations via S800 I/O system
•• Scan Time: Typically 100ms for complete program scan (application dependent)
•• Power Supply: 5VDC from controller baseplate
•• Operating Temperature: 0°C to 60°C
•• Relative Humidity: 5% to 95% non-condensing
•• MTBF: > 200,000 hours
•• Certifications: UL, CSA, CE
ABB CM772F
Core Features & Customer ValueThe module’s 32-bit processor architecture provides sufficient computational power for complex control strategies including PID control loops, sequential operations, and custom calculations. For process engineers, this enables implementation of sophisticated control schemes that improve process stability and product quality. The deterministic scan time ensures consistent control loop execution, which is critical for maintaining process variables within tight tolerances.Integrated MasterBus 300 communication allows the controller to function as a node in a distributed control architecture. This enables data exchange with other AC 410F controllers, operator stations, and higher-level systems, facilitating plant-wide control coordination. For system integrators, this distributed approach provides scalability and reduces wiring costs compared to centralized control architectures.The module’s robust design with battery-backed memory ensures application program retention during power interruptions, preventing the need for program reloads after power restoration. This feature significantly reduces system recovery time following power disturbances, which is particularly valuable in continuous process industries where quick restart capability minimizes production losses.Typical ApplicationsIn pulp and paper manufacturing, the CM772F controls critical processes such as stock preparation, paper machine sections, and coating applications. The controller manages complex multi-variable control loops for consistency regulation, moisture control, and basis weight control, ensuring product quality while optimizing raw material usage.In chemical processing plants, the controller handles batch reactor control, distillation column optimization, and safety interlocking systems. The module’s reliable operation and communication capabilities enable integration with plant-wide distributed control systems while maintaining local control autonomy for critical process units.
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