Description

GE IC693CPU372-AE Programmable Logic Controller (CPU)

Product Description

The GE IC693CPU372-AE is a high-performance, rack-mountable Central Processing Unit (CPU) module for the GE Fanuc Series 90-30 PLC family. This module serves as the computational brain of the control system, responsible for executing the user program, managing system memory, handling internal diagnostics, and coordinating communication with I/O modules and network devices. As part of the versatile Series 90-30 platform, the GE IC693CPU372-AE provides a balance of processing power, memory capacity, and connectivity suitable for a wide range of industrial automation applications, from complex machine control to mid-sized process automation. Its design emphasizes reliability and ease of use in demanding environments. For detailed technical specifications, programming manuals, and configuration guides, please visit the official product resource: GE IC693CPU372-AE. The IC693CPU372-AE CPU forms the foundation upon which a complete 90-30 control system is built, enabling the implementation of sophisticated control strategies. The performance and features of this specific CPU model make it a popular choice for upgrades or new installations within the extensive installed base of Series 90-30 systems, ensuring continued reliable operation and support for legacy applications.

Product Parameters

• Product Model: GE IC693CPU372-AE
• Series: GE Fanuc Series 90-30 PLC.
• Module Type: Central Processing Unit (CPU).
• Processor: High-speed microprocessor optimized for logic execution.
• Memory:
  • User Logic Memory: Typically 48K bytes.
  • Data Register Memory (RAM): Typically 16K words, with battery backup for retention.
  • Floating Point Math: Supported.
• I/O Capacity: Supports up to a defined maximum number of local and remote I/O points (e.g., 512 digital / 128 analog mix).
• Built-in Communication Ports:
  • Serial Port 1 (SNP/SNP Slave): For programming, HMIs, or peer-to-peer communication.
  • Serial Port 2 (RS-485 Modbus RTU Master/Slave): For connecting to drives, instruments, or SCADA systems.
• Execution Speed: Fast scan time for efficient program execution (e.g., 0.39 ms/K Boolean logic).
• Real-Time Clock (RTC): Battery-backed real-time clock for time-stamping and scheduling.
• Status Indicators: Comprehensive LEDs for power, run, battery OK, and communication status.
• Battery: Lithium battery (typically part number IC693ACC302) for RAM and RTC backup.

Advantages and Features

• Proven Reliability and Longevity: As part of the mature and widely adopted Series 90-30 family, the IC693CPU372-AE offers a track record of dependable operation, with extensive field experience and long-term component support.
• Dual Built-in Communication Ports: The inclusion of two configurable serial ports provides flexible connectivity for programming, operator interfaces (HMIs), and device networks (Modbus) without requiring additional communication modules.
• Adequate Memory and Performance: Provides sufficient logic and data memory for complex automation tasks, along with fast execution speed suitable for demanding sequential control and PID loop regulation.
• Easy Integration and Migration: Simplifies upgrades from older 90-30 CPUs (like the CPU341) due to hardware and software compatibility, protecting investments in existing I/O, racks, and program logic.
• Comprehensive Instruction Set: Supports a full suite of instructions including Boolean logic, math, data handling, PID, and program control, enabling the implementation of sophisticated control algorithms.

Application Cases in Various Fields

• Automated Assembly Lines: Controls the coordinated sequence of robots, pneumatic actuators, and conveyors in an automotive component manufacturing cell.
• Water Treatment Plant: Manages the filtration, backwash, and chemical dosing processes, utilizing PID loops for flow control and its serial port for SCADA system communication via Modbus.
• Packaging Machinery: Executes high-speed logic for a form-fill-seal machine, coordinating product feeding, filling, sealing, and rejection functions.
• Material Handling System: Serves as the master controller for a warehouse conveyor and sortation system, communicating with remote I/O drops and motor drives.

Comparison with Competing Products

The GE IC693CPU372-AE competes with mid-range CPUs from contemporary platforms like the Siemens SIMATIC S7-300 (e.g., CPU 315-2 DP) and the Allen-Bradley SLC 500 (e.g., 5/05). Its key advantages are its cost-effectiveness within the 90-30 ecosystem, its dual integrated serial ports, and its straightforward upgrade path for existing 90-30 users. Compared to newer, more compact micro-PLCs, it offers greater I/O capacity and more robust construction for larger, distributed applications. It represents a reliable, legacy-style workhorse CPU, though it may lack the high-speed networking and advanced software integration features of modern controllers.

Selection Suggestions and Precautions

1. Rack and Power Supply Compatibility: Ensure the GE IC693CPU372-AE is used with a compatible Series 90-30 baseplate (rack) and a properly sized power supply module (e.g., IC693PWR321). The power supply must provide adequate current for the CPU and all installed I/O modules.
2. Memory and I/O Requirements: Review your application’s program size and I/O count to confirm they fall within the CPU’s memory limits and maximum I/O capacity. Exceeding these limits will prevent the system from operating correctly.
3. Battery Maintenance: The backup battery is critical for retaining the user program and data during power loss. Check the battery status LED regularly and replace the battery (IC693ACC302) proactively according to the manufacturer’s schedule to avoid program loss.
4. Firmware and Software: Programming requires compatible software (GE Proficy Machine Edition Logic Developer PLC or older VersaPro). Ensure you have the correct software version and that the CPU’s firmware is compatible.

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