General Electric CL25A300TN, 110804 Programmable controller

GE PACSystems RX3i CPU Module Overview

GE (General Electric, now part of Emerson Automation but the brand remains widely recognized) PACSystems RX3i CPU modules are core components of GE's (or now Emerson's GE Automation) PACSystems series of Programmable Automation Controllers (PACs). These CPU modules are designed for industrial automation applications, providing robust processing power, high-speed communication, and high reliability to control and monitor complex industrial processes.

Product Detailed Description

• Function:

• Executes user-written control logic programs (e.g., ladder diagrams, function block diagrams).

• Manages data exchange with I/O modules and communication modules.

• Processes data, performs calculations, and diagnostics.

• Provides communication interfaces to operator interfaces (HMI), SCADA systems, and enterprise-level networks.

• Offers system diagnostics and fault detection capabilities.

• Features:

• High-Performance Processor: Utilizes advanced processors (e.g., Intel Celeron M or newer) to deliver fast scan times and efficient data processing.

• Large Memory Capacity: Typically equipped with ample RAM and non-volatile flash memory for storing user programs, data, and configurations.

• Integrated Communications: Built-in multiple communication ports (e.g., Ethernet, serial ports) supporting various industrial protocols (e.g., Modbus TCP/RTU, SRTP, PROFINET, OPC UA, etc.).

• Modular Design: As part of a modular PLC system, it works with various I/O modules, communication modules, and specialized function modules.

• Rugged and Durable: Designed for harsh industrial environments, offering high reliability and resistance to vibration and shock.

• Diagnostic Functions: Provides detailed diagnostic information for easy troubleshooting and maintenance.

Product Parameters (Example for IC695CPU320, parameters vary by model)

• CPU Performance: Refer to the CPU Reference Manual for specific performance data.

• Memory:

• Battery-backed RAM: Up to 64 MB (for program storage).

• Non-volatile flash user memory: 64 MB.

• %I and %Q (Discrete): 32 Kbits.

• %AI and %AQ (Analog): Configurable up to 32 Kwords.

• %R (Register Memory): Configurable.

• Power Requirements:

• +3.3 Vdc: 1.0 Amps nominal.

• +5 Vdc: 1.2 Amps nominal.

• Operating Temperature: 0 to 60°C (32°F to 140°F).

• Time of Day Clock Accuracy: Maximum drift of 2 seconds per day.

• Embedded Communications:

• Serial Protocols Supported: Modbus RTU Slave, SNP, Serial I/O.

• Backplane: PCI 2.2 standard compliant.

• Processor Type: E.g., older models might use 80386EX, newer models use Intel Celeron M.

• Typical Scan Rate: E.g., 0.22 milliseconds per 1K of logic (Boolean contacts).

• Supported Communication Modules: Supports various Ethernet, fieldbus (e.g., Profibus, FIP) and other option modules.

Product Advantages

• High Reliability: Designed for 24/7 industrial operation with strong interference immunity and self-diagnostic capabilities.

• Excellent Performance: Fast scan times and data processing capabilities, suitable for demanding, high-speed control applications.

• Open Architecture: Supports multiple communication protocols and programming languages, easy to integrate with other systems.

• High Scalability: Modular design allows flexible configuration of I/O and functions to adapt to evolving system requirements.

• Easy Maintenance: Diagnostic features and modular design simplify troubleshooting and component replacement.

• Long Lifecycle: GE (now Emerson) provides long-term product support and compatibility.

Precautions

• Correct Installation: Strictly follow the installation guidelines in the product manual, ensuring the CPU module is installed correctly, securely mounted, and has adequate heat dissipation.

• Power Requirements: Ensure the supply voltage and current comply with the CPU module's specifications and provide a stable power source.

• Grounding: Ensure the system and CPU module have proper grounding to reduce electromagnetic interference and provide safety protection.

• Environmental Conditions: Ensure the CPU module operates within the specified operating temperature and humidity ranges, avoiding dust, moisture, corrosive gases, and strong electromagnetic interference.

• Electrostatic Discharge (ESD) Protection: Always take ESD precautions when handling the CPU module to prevent static electricity from damaging sensitive electronic components.

• Firmware Updates: Regularly check for and apply firmware updates to gain the latest features and security patches.

• Battery Maintenance: Some CPU modules may contain a battery for memory retention, which needs to be checked and replaced periodically.

• Program Backup: Regularly back up PLC programs and configuration data.

Product Applications

GE PACSystems RX3i CPU modules are widely used in various industrial and infrastructure sectors, including but not limited to:

• Power Industry: Power plant control (coal, gas, nuclear), power transmission and distribution automation.

• Oil and Gas: Drilling rigs, pipeline transportation, refineries, and petrochemical plant control.

• Water/Wastewater Treatment: Water treatment plants, pump stations, wastewater treatment plant automation.

• Manufacturing: Production line automation in automotive manufacturing, food and beverage, packaging, pharmaceuticals, metal processing, etc.

• Transportation: Rail transport, airport baggage handling systems, tunnel control.

• Mining and Mineral Processing: Mine equipment control, mineral processing plant automation.

• Building Automation: Central control systems for large commercial and industrial buildings.

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