Description

The CM902WL is a high-performance communication and memory module manufactured by Foxboro, a flagship brand of Schneider Electric’s Process Automation business. This module is a critical component within the renowned Foxboro I/A Series (Intelligent Automation Series) distributed control system (DCS), specifically designed for use in the system’s CP60 and CP70 series control processors. The CM902WL functions as a dedicated dual-port Ethernet communication and memory expansion module, serving two primary roles: it provides additional Ethernet connectivity for enhanced network integration and data exchange, while simultaneously offering expanded non-volatile memory capacity for storing extensive application logic, historical data, and system configuration files. Its core value lies in enhancing the processing power, connectivity, and data retention capabilities of the control processors, which are the central brains of the I/A Series system.

Designed for mission-critical process automation applications, the CM902WL module enables robust communication with various network nodes, including other control processors, operator workstations, engineering stations, and enterprise-level systems. By expanding the processor’s memory footprint, it allows for the execution of more complex control strategies and the local storage of larger volumes of process history, which is crucial for advanced process optimization, troubleshooting, and regulatory compliance. The integration of the CM902WL into a Foxboro I/A Series system directly contributes to increased system availability, enhanced operational intelligence, and greater flexibility for system expansion and modernization in continuous process industries such as oil and gas, refining, chemical, and power generation.

CM902WL FOXBORO

Technical Specifications

Main Features and Advantages

Enhanced connectivity and data accessibility: The CM902WL module significantly boosts the network capabilities of the control processor by adding two independent 10/100 Mbps Ethernet ports. This facilitates high-speed communication for peer-to-peer data exchange with other controllers, file transfers to and from workstations, and integration with higher-level plant networks. The dual-port design allows for network segmentation or redundancy strategies, enhancing overall system reliability and data flow efficiency. This expanded connectivity is crucial for modern distributed control architectures where large volumes of data need to be shared seamlessly across the system.

Expanded memory for complex applications: A primary advantage of the CM902WL is its substantial expansion of the control processor’s non-volatile memory capacity. This allows engineers to develop and deploy more sophisticated and extensive control applications, including complex regulatory control loops, elaborate sequence-of-operations logic, and advanced process optimization algorithms. The additional memory also provides ample space for storing significant historical data and event logs directly within the controller, enabling faster access for trend analysis, forensic investigation, and compliance reporting without always relying on external historians. This capability is invaluable for maintaining a comprehensive record of process events and conditions.

Application Field

The CM902WL is deployed exclusively within Foxboro I/A Series DCS environments across a wide range of continuous process industries where reliability, data integrity, and complex control are paramount. In oil and gas refineries, the module is used to enhance the capabilities of controllers managing critical units such as crude distillation, catalytic cracking, and hydrotreating, enabling more advanced control strategies and secure data logging. In chemical processing plants, it supports complex batch and continuous reactions by providing the necessary memory for elaborate recipes and sequence logic, while its communication ports ensure seamless integration with laboratory information management systems (LIMS).

Within the power generation sector, the CM902WL is found in controllers managing boiler control, turbine governor systems, and balance-of-plant operations, where its expanded memory supports sophisticated control algorithms and its Ethernet ports facilitate data exchange with performance calculation systems. In pulp and paper mills, the module enables precise control of digesters, bleach plants, and paper machines. Essentially, the CM902WL is the ideal upgrade solution for any Foxboro I/A Series application requiring enhanced controller connectivity for network integration or additional memory capacity for more complex control strategies and data historization.

CM902WL FOXBORO

Related Products

CP60 / CP70: The Foxboro I/A Series control processors that host the CM902WL module.

FBM Series (Fieldbus Modules): Various analog and digital I/O modules that interface with field devices and are controlled by the processor.

P0926GH: A power supply module for the Foxboro I/A Series system.

Foxboro I/A Series Workstations: Operator and engineering stations that communicate with the control processors.

Cable Kits: Specific cabling used for installing the CM902WL into the processor baseplate.

Foxboro Control Core Software: The engineering and operational software used to configure and manage the I/A Series system.